Academic literature on the topic 'Goslings'
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Journal articles on the topic "Goslings"
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Thomas, V. G., and H. C. Peach Brown. "Relationships among egg size, energy reserves, growth rate, and fasting resistance of Canada Goose goslings from southern Ontario." Canadian Journal of Zoology 66, no. 4 (1988): 957–64. http://dx.doi.org/10.1139/z88-142.
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Eggs of wild giant Canada Geese (Branta canadensis maxima) breeding in southern Ontario were collected and incubated artificially. Components of the total nutrient reserve of goslings were measured at hatch to test whether relationships existed between egg size, gosling weight, and weight of reserves in goslings. The growth rate of fed goslings of different weights at hatch was measured for 25 days. The nutrient reserves remaining in goslings of different hatch weights were measured after 2, 4, and 6 days of starvation. Egg size and gosling weight were not highly correlated in this population (r = 0.63). Larger goslings generally contained more reserves than small goslings (P < 0.05), but much variability occurred in this relationship. Gain in weight over 25 days was not related to the weight at hatch. Starved goslings with higher body fat levels had significantly higher dry carcass weights than goslings with low body fat levels (P < 0.01), suggesting a sparing action of fat on body tissues. The apparent survival of small goslings and goslings with small reserves, combined with the great variability in egg size, gosling weight, and extent of metabolic reserves, suggests relaxed selection in the southern Ontario environment where this population breeds.
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Marshall, Ann P., and Jeffrey M. Black. "The effect of rearing experience on subsequent behavioural traits in Hawaiian GeeseBranta sandvicensis: implications for the recovery programme." Bird Conservation International 2, no. 2 (1992): 131–47. http://dx.doi.org/10.1017/s0959270900002367.
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SummaryThe risk of the NeneBranta sandvicensisbecoming extinct has been minimized by the release of over 2,000 captive-reared geese, but the population (now at 500) is yet to achieve a self-sustaining status. The majority of birds released have been reared in gosling-only groups, thus missing out on the opportunity to learn social and feeding skills from adults. In this paper we test the hypothesis that rearing experience affects the subsequent behavioural traits of Nene goslings. We raised 42 goslings under four conditions: a gosling group not exposed to adults, a gosling group exposed to adults from 16 days onward, three groups in view of “foster” adults for 14 days, and four groups reared continuously by parents. All birds were eventually released into an 8 ha pen where a flock of adult Nene roamed. The method by which Nene goslings were raised had a significant effect on dominance, flock integration, and vigilance. Parent-reared birds were dominant to and more vigilant than goslings raised without parents or goslings reared in sight of adults. Parent-reared birds also integrated into the adult flock sooner than other goslings. Growth rate and final body size were not affected by rearing regime (with or without parents or foster parents). In future, managers should provide goslings with as much “parental” experience as possible in order to equip them with appropriate skills to cope once released in the wild.
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Komdeur, Jan, Ellen Kalmbach, and Pascal van der Aa. "Adoption as a gosling strategy to obtain better parental care? Experimental evidence for gosling choice and age-dependency of adoption in greylag geese." Behaviour 142, no. 11-12 (2005): 1515–33. http://dx.doi.org/10.1163/156853905774831909.
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AbstractAdoptions of unrelated young by successful breeders are a form of alloparental care which has been observed in many species of geese. Depending on costs and benefits to the parents, adoptions might represent an inter-generational conflict or a mutually beneficial strategy. Although most studies of wild populations suggest benefits of large brood sizes, incidental observations mostly report aggressive behaviour of parents towards lone goslings. No studies have investigated mechanisms and behaviour during adoptions in order to test whether adoptions are driven by parents or goslings. To test whether goslings might use adoption as a strategy to obtain better parental care, we carried out an experiment where lone greylag goose (Anser anser) goslings could choose between a dominant and a subordinate foster family. In a second experiment we also tested whether adoption was age-dependent. Except for one case, all lone goslings (N = 16) chose the dominant family. Parents showed very little aggression towards lone goslings at three days after hatch, but aggression increased until 9 days and remained high thereafter. At the same time as aggression increased, the chance of successful adoption decreased. In the first five weeks of life, goslings which had been adopted were no further away from parents than original goslings during grazing. These results show that goslings might choose foster families according to dominance. The fact that with increasing gosling age parents are less willing to adopt could be due to improved individual recognition and reflect decreasing benefits of gaining an additional family member. More detailed studies on state-dependent costs and benefits of adoptions are required to determine whether adoptions in geese represent conflict or mutualism, and why this changes with gosling age.
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Herzog, Mark P., and James S. Sedinger. "Dynamics of Foraging Behavior Associated With Variation in Habitat and Forage Availability in Captive Black Brant (Branta Bernicla Nigricans) Goslings in Alaska." Auk 121, no. 1 (2004): 210–23. http://dx.doi.org/10.1093/auk/121.1.210.
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Abstract We conducted an experiment to study the effect of gosling density on food abundance and feeding behavior of Black Brant (Branta bernicla) goslings in two habitat types important to Black Brant on the Yukon-Kuskokwim Delta, Alaska: (1) Carex subspathacea grazing lawns and (2) slough levees that contain Triglochin palustris. Within each habitat, we manipulated grazing pressure by allowing goslings to graze specific plots every 6, 9, or 12 days. We randomly assigned six goslings to one of six treatment groups (three grazing frequencies × two habitats). Biomass of C. subspathacea was higher in lightly grazed plots (grazed every 12 days) than in the heavily grazed plots (grazed every 6 days). Offtake in C. subspathacea was also greater in the lightly grazed plots. Within C. subspathacea stands, proportion of time spent feeding varied among grazing intensities. Goslings within heavily grazed plots spent more time feeding than goslings in lightly grazed plots. Within slough levee habitat, there were no differences between heavily and lightly grazed plots in either biomass or offtake of T. palustris. Whereas overall percentage of time feeding did not vary between the two habitats, percentage of time feeding declined as gosling mass increased in all treatments and habitats. Although the trend in peck rate over time varied among treatments and between habitats, during trials very early in the season we observed a reduced peck rate in the heavily grazed treatment, but only within the C. subspathacea grazing lawns. There was no variation in peck rate among treatments within slough levee habitat; however, peck rates for goslings fed on C. subspathacea was double the rate of goslings in slough levee. Thus, the varied growth responses of plants between habitats to variation in grazing pressure that we observed during this experiment suggest the importance of density-dependent effects on brood-rearing habitat and the resulting variation in gosling growth.
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Audet, Benoît, Gilles Gauthier, and Esther LÉVESQUE. "Feeding Ecology of Greater Snow Goose Goslings in Mesic Tundra on Bylot Island, Nunavut, Canada." Condor 109, no. 2 (2007): 361–76. http://dx.doi.org/10.1093/condor/109.2.361.
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AbstractAlthough mesic tundra is a habitat commonly used by arctic-nesting geese, their feeding ecology in this habitat is little known compared to wetlands. Our objectives were to determine the diet and food selection of Greater Snow Goose (Chen caerulescens atlantica) goslings in relation to the nutritional quality of plants growing in mesic tundra habitats on Bylot Island, Nunavut, Canada. We used two different but complementary approaches: examination of esophageal contents of sacrificed wild goslings, and direct observation of the feeding activity of captive, human-imprinted goslings. The latter method was innovative and provided a reliable description of the diet, with results comparable to those obtained from wild goslings. Although mesic habitats have a more diverse floristic composition than wetlands and sparse graminoid cover, Gramineae were preferentially selected and dominated the diet (~50%). The rest of the diet consisted mainly of members of the Juncaceae, Polygonaceae, and Leguminosae families. The diet of very young goslings was diverse, but as they aged and gained efficiency, they concentrated on a few taxa. Goslings ate mostly leaves (~80%), but flowers (~20%) were also important. Food selection was influenced by nitrogen and total phenolic compounds content of plants, but the ratio of phenolic compounds to nitrogen in plant organs was most determinative of food choice. Neutral detergent fiber content of plants did not influence plant selection. Both plant nutritional quality and availability determined gosling diet across different mesic habitats and growing goslings appeared to maximize their intake of metabolizable proteins.
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Mainguy, Julien, Gilles Gauthier, Jean-François Giroux, and Joël Bêty. "Gosling Growth and Survival in Relation to Brood Movements in Greater Snow Geese (Chen Caerulescens Atlantica)." Auk 123, no. 4 (2006): 1077–89. http://dx.doi.org/10.1093/auk/123.4.1077.
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Abstract Post-hatch brood movements to high-quality foraging sites are common in precocial birds but may entail costs for young. We assessed effects of overland movements of broods between the nesting and rearing areas in Greater Snow Geese (Chen caerulescens atlantica) breeding on Bylot Island, Nunavut, Canada, to determine whether these movements affected gosling survival and growth. We monitored 51 radiomarked females over five years to quantify movement distance, movement duration, and gosling survival. Gosling growth was compared over four years using a sample of web-tagged broods recaptured shortly before fledging among adults that (1) nested and reared their young in a dense colony, (2) left the colony and moved ≈30 km to reach the main brood-rearing area, or (3) nested and reared their young in the main brood-rearing area. Brood movements by radio-marked birds were highly variable (2.6-52.5 km, depending on rearing areas used) and fairly rapid (≤6 days after hatch for 72% of the females). Gosling survival was not related to distance moved between nesting and brood-rearing areas. However, gosling growth was influenced by areas used and whether or not they had to move to reach their brood-rearing area. Geese nesting at the main brood-rearing area generally reared heavier and larger goslings than those that moved ≈30 km from the main nesting colony to rear their brood at the main brood-rearing area. On the other hand, goslings leaving the nesting colony after hatch were heavier and larger than those that stayed there throughout brood rearing in one of two years. Although brood movements allow goslings access to high-quality habitats, they entail some costs. Thus, minimizing such movements through nest-site selection should provide a selective advantage by allowing goslings to maximize their growth. Croissance et Survie des Oisons en Relation avec les Déplacements des Familles chez Chen caerulescens atlantica
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Yang, Haiming, Jingru Liang, Hang Dai, Xiaoli Wan, and Zhiyue Wang. "Effects of vitamin A supplementation in the diet of breeding geese on offspring intestinal tissue morphology and immune performance." Asian-Australasian Journal of Animal Sciences 33, no. 9 (2020): 1463–69. http://dx.doi.org/10.5713/ajas.19.0890.
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Objective: The effects of maternal and offspring dietary vitamin A (VA) supplementation on early body weight, digestive tract function and immune function in goslings were studied.Methods: Yangzhou geese (180 d old) were randomly divided into 5 experimental groups of 15 females and 3 males (the males were kept until slaughter). Eggs were collected for hatching during the peak laying period. A total of 96 goslings were selected from each treatment group (each fed a basic diet supplemented with 0, 4,000, 8,000, 12,000 or 16,000 IU/kg VA) and randomly divided into 2 groups, with 6 replicates in each group and 8 goslings in each replicate. The gosling diet was supplemented with 0 or 9,000 IU/kg VA.Results: i) Villus length, villus width and the muscle thickness of the duodenum, jejunum and ileum were increased and the crypt depth was reduced after adding 12,000 IU/kg VA to the goslings’ diet (p<0.05). Adding 9,000 IU/kg VA to the offspring diet increased the length of the duodenal villi and width of the ileum and decreased the crypt depth of the ileum (p<0.05). ii) Supplementing the maternal diet with 12,000 IU/kg VA increased immune organ weight, the immune organ index and immunoglobulin content in goslings (p<0.05). The bursa weight and immunoglobulin G content of offspring were higher in the 9,000 IU/kg VA supplementation group than in the group with no supplementation (p<0.05).Conclusion: Offspring growth and development were affected by the amount of VA added into maternal diet. The negative effect of maternal VA deficiency on offspring can be compensated by adding VA to the offspring diet. Continued VA supplementation in the offspring diet after excessive VA supplementation in the maternal diet is unfavorable for gosling growth and development.
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Xi, Yumeng, Yuanpi Huang, Ying Li, Junshu Yan, and Zhendan Shi. "Fermented Feed Supplement Relieves Caecal Microbiota Dysbiosis and Kidney Injury Caused by High-Protein Diet in the Development of Gosling Gout." Animals 10, no. 11 (2020): 2139. http://dx.doi.org/10.3390/ani10112139.
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Firstly, forty-eight 1-day-old goslings were randomly allocated to four groups and were fed diets containing crude protein (CP) at different concentrations: 160, 180, 200, and 220 g/kg in Experiment One. We found a dose-dependent relationship between the dietary protein levels and morbidity of gosling gout. The concentration of serum uric acid (UA), creatinine (Cr), and urea nitrogen (UN), and the activity of xanthine oxidase in the 220CP groups were significantly higher than those in the low-protein diet groups. Beneficial microbes, including Akkermansia, Lactococcus, and Butyricicoccus were enriched in the ceca of healthy goslings, while the microbes Enterococcus, Enterobacteriaceae, and Bacteroides were enriched in those with gout. Then, we explored the effects of fermented feed on gosling gout caused by high-protein diets in Experiment Two. A total of 720 1-day-old goslings were randomly allotted to four experimental groups: CN (162.9 g/kg CP), CNF (167.5 g/kg CP, replacing 50 g/kg of the basal diet with fermented feed), HP (229.7 g/kg CP, a high-protein diet), and HPF (230.7 g/kg CP, replacing 50 g/kg of the high-protein diet with fermented feed). We found that the cumulative incidence of gout increased in the HP group compared with that in the control, but decreased in the HPF group compared to that in the HP group. Similarly, the concentration of serum UA in the HP group was higher than that in the CN group, but decreased in the HPF group. Meanwhile, compared with the HP group, using fermented feed in diets decreased the abundance of Enterococcus in the ceca of goslings, while increasing the abundance of Lactobacillus. These results suggest that appropriate dietary protein levels and the fermented feed supplement might relieve the kidney injury and gut microbiota dysbiosis caused by high-protein diets in the development of gosling gout.
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Brook, Rodney W., James O. Leafloor, Kenneth F. Abraham, C. Davison Ankney, and Keith A. Patton. "Canada Goose Gosling Mortality During Prefledging and Early Migration on Akimiski Island, Nunavut." Journal of Fish and Wildlife Management 10, no. 2 (2019): 314–22. http://dx.doi.org/10.3996/102018-jfwm-098.
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Abstract Mortality rates for precocial avian species are highest during their first year of life. For harvested species, including waterfowl, it is particularly difficult to determine causes of mortality using standard mark–recapture techniques. The timing and cause of nonhunting mortality is difficult for researchers to distinguish, and therefore, difficult to incorporate into management decisions. We marked flightless Canada goose Branta canadensis interior goslings with radio transmitters to determine the timing of mortality prior to harvest during the fall migration. We tracked survival of 206 goslings for 2 mo from an average of 50 d of age to just prior to the fall migration departure from the breeding grounds in 1999 and 2000. The most parsimonious model from a set of candidate models describing probability of survival showed clear differences between years and suggested that survival was affected by gosling size (largest survived better) and hatch timing disparity. We indexed hatch timing disparity by measuring the difference between gosling hatch date and the date of the estimated peak in forage quality as determined by the normalized difference vegetation index. The latest hatched goslings presumably had the lowest quality forage available to them. Both size and hatch timing disparity concur with a mortality cause that is most likely from complications due to malnutrition. The estimated survival probability of goslings to 51 d post marking was 0.31 (95% confidence limit = 0.22 to 0.44) in 1999 and 0.69 (95% confidence limit = 0.57 to 0.83) in 2000. Managers can make better informed decisions concerning the utility of harvest regulation in the conservation of juvenile Canada geese by better understanding the timing, causes, and annual variation of their mortality.
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Lamprecht, Jürg. "Distance Regulation of Hand-Reared Goslings (Anser Indicus) To an Unresponsive Parent: a Study of the Short-Term Dynamics of Attachment." Behaviour 108, no. 3-4 (1989): 209–40. http://dx.doi.org/10.1163/156853989x00312.
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AbstractThis study investigated the ways in which young goslings contribute to the proximity between parent and offspring in geese. It sought to detect the rules governing excursions of hand-reared goslings (Anser indicus) from a stationary and non-responding human 'parent' on a large lawn. Distance to the parent and behaviours (distress calling, feeding and others) were monitored during 149 30-min-sessions of 28 goslings (7-19 days old), most of which were accompanied in some sessions by a sibling. Of two additional experiments, one demonstrated the positive effect of sibling group size on maximum distance from the parent, the other showed that distress calling induced by forced separation from the (human) parent was reduced by the presence of siblings. Excursion analysis revealed that the probability of returning to the parent was independent of time and distance. This allowed rejection of some earlier models of excursion control. Only sudden disturbances in the environment (occurring at random with respect to the start of an excursion), forced separation from the parent, and-similarly-the parent's walking away were found to elicit approach to the parent. The speed of leaving the parent was also independent of time and distance. Thus distance was not limited by an increasing locomotor tendency to return. But rate of distress calling increased with distance. Two causes for the goslings' departures were identified: 1) parental non-signalling (by the "mute" parent), which aroused a tendency "to go home", and 2) hunger combined with the tendency to forage in a fixed direction. Return probability, speed of leaving and distress call rate at any given distance were lower when a gosling was accompanied by a sibling, apparently because the social feedback received from the sibling compensated for the parent's non-signalling. In spite of behavioural tendencies which lead a gosling to potentially unlimited distances from its parents, it will not normally get lost, as it returns whenever alarmed or when the parents walk away, and because goose parents tend to join a gosling distress calling at a distance.
Dissertations / Theses on the topic "Goslings"
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Hill, Michael Robert John. "Factors influencing pre- and post-fledging growth and survival of Canada goose goslings on Akimiski Island, Nunavut." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape7/PQDD_0005/NQ42527.pdf.
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Sertle, Michael R. "Nesting success, gosling growth, and adult body condition of giant Canada geese (Branta canadensis maxima) in southern Illinois /." Available to subscribers only, 2006. http://proquest.umi.com/pqdweb?did=1136077871&sid=7&Fmt=2&clientId=1509&RQT=309&VName=PQD.
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Rybczynski, Daniel J. "Correlation, Paleogeography, and Provenance of the Neoproterozoic Eastern Uinta Mountain Group, Goslin Mountain Area, Northeastern Utah." DigitalCommons@USU, 2009. https://digitalcommons.usu.edu/etd/364.
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Geologic mapping, facies analysis, sedimentary petrography, and detrital zircon analyses of undivided eastern Uinta Mountain Group stratigraphy are presented to better understand the depositional environments and tectonic setting of the Uinta Mountain Group basin. Subdivided units have been modified and correlated from previous work and include the Red Pine Shale, Hades Pass, Crouse Canyon, Outlaw Trail, and Diamond Breaks formations. Three lower-order maximum flooding surfaces associated with the lower Outlaw Trail formation, lower Hades Pass formation, and Red Pine Shale are interpreted. The relative magnitude of each lower-order transgression increases up section along with increasing diversity of palynomorph assemblages found in organic shale intervals.
Six facies associations exist within the section and are interpreted as braided fluvial conglomerate, braided fluvial sandstone and conglomerate, braided fluvial sandstone, low-energy braided fluvial sandstone, mudflat, and offshore depositional environments. Both marine and non-marine interpretations are plausible for mudflat and offshore environments; however, previous interpretations of correlative Red Pine Shale exposures suggest a marine environment. The coarsest fluvial environments are restricted to the northern half of the study area and likely coincide with proximity to a tectonically-active northern basin margin. Paleocurrent analysis and the restriction of some subaqueous deposits to the north show northward-dipping depositional slopes, which suggest a tectonic control.
Provenance work suggests three general sediment sources existed: an eastern source where ~1.1 Ga and lesser ~1.4 Ga detritus dominate, an east-northeastern source where ~1.8 Ga detritus dominate, and a north-northeastern arkosic source where ~2.7 Ga detritus dominate. Results suggest that during lower-order lowstands, sediments derived from eastern sources dominate. Higher concentrations of ~1.8 Ga and ~2.7 Ga detritus is likely coincident with proximity to the northern basin margin. During lower-order highstands, eastern or northern sources may dominate; northern sources appear more prominently within the Outlaw Trail formation, while eastern sources appear more prominently within the Red Pine Shale. Reasons for this may be linked to the magnitude of the transgressive interval sampled.
These relationships, in conjunction with observations of previous studies, suggest the eastern Uinta Mountain Group was deposited in a half-graben style rift, a strike-slip basin, or some combination of the two.
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Hsieh, Yi-Lan, and 謝翊嵐. "Effects of dietary fatty acids composition on lipid metabolism in goslings." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/48393562186649659591.
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碩士<br>國立中興大學<br>畜產學系<br>93<br>The object of this study was conducted to determine the effects of dietary fatty acid composition on lipid metabolism of goslings. Two experiments were designed in this study. In experiment Ⅰ, the saturated fatty acid (SFA)/ unsaturated fatty acid (USFA) ratios in the diets were: (A)1.46; (B) 1.02; (C) 0.78; (D) 0.33. In experiment Ⅱ, the n-3/n-6 fatty acid (FA) ratios in the diets were: (A) 1.16; (B) 0.78; (C) 0.53; (D) 0.02. All experimental diets were formulated to be both isocaloric and isonitrogenous, containing CP 20％, ME 2900 kcal/kg. Goslings were housed in wire cages for a three-week experimental period, feed and water were supplied ad libitum. At the end of the experiment, liver and abdominal fat pad were removed. The concentrations of triglyceride, total cholesteral and total lipid in the plasma and liver, and hepatic lipogenic enzyme activities, and the fatty acid composition in the liver and abdominal fat were analysed.
The results of experiment Ⅰ indicated that the USFA levels in dietary fat did not affect body weight, feed intake and feed efficiency (P>0.05). Liver weight (P<0.01) and relative liver weight (P<0.001) decreased with increase of dietary USFA supplementation, but it didn’t affect abdominal fat weight and relative abdominal fat weight. The activity of fatty acid synthetase (FAS), one of lipogenic related key enzymes in liver, was linearly decreased as the dietary USFA level increased (P<0.01). The content of total cholesterol in the liver tended to decrease while dietary USFA level increased (P<0.01). The increase of dietary USFA level reduced the content of triglyceride in plasma (P<0.01).The concentrations of fatty acids, C14:0 and C18:0, increased as dietary USFA supplementation enhanced (P<0.001). The total SFA content (P<0.01) and the ratio of SFA/USFA (P<0.05) in liver decreased when dietary SFA level reduced. In abdominal fat, C12:0、C14:0 fatty acid concentrations、total saturated fatty acid and the ratio of SFA/USFA decreased while the ratio of SFA/USFAin diets decreased (P<0.001).
In experiment Ⅱ, the results indicated that the dietary n-3 FA levels did not affect body weight, feed intake and feed efficiency (P>0.05), and it didn’t affect liver weight and abdominal fat weight (P>0.05) either. The activities of lipogenic related enzyme, including acetyl-CoA carboxylase (ACC) (P<0.05), FAS (P<0.001), NADP-malate dehydrogenase (NADP-MDH) (P<0.01) and glucose-6-phosphate dehydrogenase (G-6-PDH) (P<0.05), decreased with the ratio of dietary n-3/n-6 PUFA enhanced. Dietary n-3 FA level increased significantly decreased the contents of triglyceride and total cholestero in the liver (P<0.05), and it also decreased the contents of triglyceride in the plasma (P<0.01). The C18:3n-3 fatty acid and total n-3 FA concentrations in the liver increased as dietary n-3 FA supplementation increased (P<0.05). In abdominal fat, the C18:2n-6 and total n-6 FA concentrations decreased as dietary n-6 FA supplementation decreased (P<0.001). C18:3n-3, total n-3 FA and the ratio of dietary n-3/n-6 FA increased when dietary n-3/n-6 FA ratio increased. Therefore, the composition of dietary fatty acid could affect the lipid metabolism of goslings.
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"Neonate reserves, growth and survival of Ross' and Lesser Snow Goose goslings." Thesis, 1994. http://hdl.handle.net/10388/etd-07202009-093405.
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The influence of egg size and brood dispersal on gosling growth and survival was studied in Ross' and Lesser Snow Geese hatched at Karrak Lake, N.W.T. Variation in neonate composition can influence growth, energetics and, possibly, subsequent dispersal patterns of young. Therefore, the relative nutrient profile and physiological development level of neonates in these two dimorphic species were examined by analyzing egg and gosling composition for seasonal, egg size and species-specific effects. Late laid eggs had less yolk protein and, in Ross' Geese, produced goslings with smaller pectoralis muscles. Since skeletal muscles are important for thermogenesis, this seasonal variation in muscle tissue may influence thermoregulatory abilities of late-hatched young. Egg composition varied isometrically with egg size. However, goslings from larger eggs were relatively smaller for their egg size yet contained the same relative nutrient content as goslings from smaller eggs. Because of their higher lipid:body size ratio, goslings from larger eggs were in better condition. Thus larger egg size may give an initial energetic advantage to goslings during periods of nutritional or thermal stress. Although no interspecific variation was observed for egg components, Ross' Goose goslings hatched with more protein for their egg size and larger gizzards for their body size. In addition, Ross' Goose goslings had less water per gram of lean dry mass than did Snow Goose goslings which indicates a greater functional maturity of Ross' Goose neonate tissue. Digestive efficiency, thermoregulatory ability and locomotor capacity may be relatively better in Ross' Geese and these characteristics may represent adaptations to metabolic constraints associated with smaller neonate
body size and foraging requirements.
Resource depletion around large nesting colonies may influence brood movements and subsequent growth and survival of nidifugous young. If per capita food availability increased with distance from the colony, then I predicted that broods settling farther from natal colonies should produce structurally larger and/or relatively heavier goslings than those broods feeding locally. I used radio telemetry to recapture marked broods and found indirect evidence of a nutrient gradient around the Karrak Lake colony. Broods dispersed 8-59 km away from Karrak Lake with Ross' Geese travelling farther than Snow Geese (19-59 km vs 8-21 km, respectively). These dispersal patterns may be a function of parental behavior, body size, bill morphology and nutrient requirements. For known age Ross' Goose goslings, birds reared farther from the colony were heavier for their body size than were goslings raised nearer to Karrak Lake. Body size varied randomly with distance in this sample. Both body size and condition varied positively with distance for Ross' and Snow Goose goslings of unknown age which were measured at marked brood recapture sites. A similar pattern was observed for body size in unmarked adults and this similarity may reflect common environmental effects during the growth period of adults and goslings. Although I found no distance effect on gosling survival, egg size was a significant determinant of within- (Snow and, possibly, Ross' Geese) and among-brood survival (Ross' Geese). Because goslings raised closer to the colony may fledge in poorer condition and thus may have lower first year survival, female philopatry to brood-rearing areas could indirectly influence parental fitness.
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Sue, Chyong-Jen, and 蘇瓊珍. "Effects of Dietary Fiber Level on the Utilizations of Diet Components in Goslings." Thesis, 1993. http://ndltd.ncl.edu.tw/handle/72132973278783940079.
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CHEN, YING-HAO, and 陳盈豪. "Effects of dietary fiber on performance, intestine fermentation and cellulase activity of goslings." Thesis, 1991. http://ndltd.ncl.edu.tw/handle/84827915930766493405.
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Hsu, Min-Hui, and 徐敏惠. "Effect of diluted diets on growth performance and digestive organs in White Roman goslings." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/69861470343106172407.
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碩士<br>國立中興大學<br>畜產學系<br>91<br>捌、英文摘要
Effect of Diluted Diets on Growth Performance and Digestive Organs
in White Roman Goslings.
Min-Hui Hsu
Summary
The purpose of this study was to determine the effect of different diet dilution levels on growth performance and digestive organ development in White Roman goslings. Three trails were conducted. The weight or length of digestive organs were measured at the end of each trail.
The object of trail one was to determine the diet dilution level effect on growth performance and digestive organs in White Roman goslings during 0 to 4 wk-old. Sixty day old White Roman goslings were divided into five treatments by sex. Goslings were fed a total concentrate diet (2900 kcal ME/kg, 20﹪CP) or diet diluted with 10, 20, 30, 40﹪ nilegrass meal (ME were 2700, 2550, 2380, 2200 kcal/kg, with the ME to CP ratio constant at 145). The results indicated that the weight gain or feed efficiency of the goslings exhibited a negative linear relation with the diet dilution level (P < 0.001). The weight gain or feed efficiency were not affected when the diet dilution level was up to 20﹪(P < 0.05). The relative weight of gizzard, small intestine and caecum had a positive linear relation with the diet dilution level (P < 0.001). However, the abdominal fat and liver exhibited a negative linear relation with the diet dilution level (P < 0.001).
The object of trial two was to determine the diet dilution level effect on growth performance and digestive organs in White Roman goslings during 5 to 8 wk-old. Eighty 5 wk-old White Roman gosling were selected (body weight 1990 ± 193 g), and divided into four treatments. Goslings were fed a total concentrate diet (3011 kcal ME/kg, 15﹪CP), or diets diluted with 10, 20, 30﹪ nilegrass meal (2826, 2640, 2455 kcal ME/kg. The ME to CP ratio was constant at 200). The results indicated that the weight gain in goslings fed diluted diets was not different from the control group (P > 0.05). The feed consumption had a negative linear relation with the diet dilution level (P < 0.001). The relative weight of gizzard had a positive linear relation with the diet dilution level (P < 0.001). However, the relative weight of abdominal fat or liver had a negative relation with the diet dilution level (P < 0.01).
The object of trail three was to determine the energy to protein ratio effect of diluted diets on growth performance and digestive organs in White Roman goslings during 0 to 4 wk-old. Ninety-six day old White Roman goslings were divided into four treatments by sex. Goslings were fed a total concentrate diet (2900 kcal ME/kg, 20﹪CP), or diluted diets. Each diluted diet was supplied with 20﹪ nilegrass meal. The ME to CP ratios were 135, 145, or 155 (R135, R145, or R155). The results indicated that male or female goslings fed the R135 diet had higher feed consumption and weight gain than those fed the control diet. The relative weights of pancreas and abdominal fat, or relative length of small intestine in goslings fed the diluted diet were not significantly different from those in the control. The relative weight of liver or abdominal fat weight in goslings fed the R145 diet were lower than those in the control group. However, goslings fed the R135 or R155 diet were not significantly different from the control group.
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Shih, Bor-Ling, and 施柏齡. "Development of digestive tract and effect of dietary protein on its development in goslings." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/15143659193097876179.
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博士<br>國立中興大學<br>畜產學系<br>94<br>The objective of this study was to investigate the development of digestive tract and effect of dietary protein levels and sources on its development in goslings. The results indicated that the relative weights (g/100g BW) of proventricule and gizzard, liver and pancreas peaked at 3 and 14 days of age, respectively. The relative lengths (cm/100g BW) of small intestine and large intestine peaked at 3 days of age and hatching, respectively. The villus height, width, perimeter, area, crypt depth and muscle layer of small intestine were increased linearly and significantly (P < 0.05) during the first four weeks. From hatching to first week, the villi of duodenum had a small and dense finger-like shape, after which more developed plate or tongue-like ones were observed at 4 wks of age. Meanwhile, jejunum and ileal villi were developed to finger-like villi with a round tip in goslings during the early growth period. Further, the specific activity (SA) of pepsin in mucosa of proventricule increased rapidly after hatching and reached a plateau between 3 to 7 days of age, followed by a substantial decline. The SA of pancreatic amylase and lipase increased with age and peaked at 21 days of age. The activities of pancreatic trypsin and chymotrypsin were highest at 3 and 14 days of age, respectively. The significant (P < 0.05) quadratic regression of the SA of pancreatic enzymes on age of goslings were existed. The SA of amylase, trypsin and cymotrypsin in the mucosa and content of small intestine had a significant (P < 0.01- 0.05) quadratic regression on age, respectively. Moreover, the SA of lipase in small intestine and cellulase in caecal content still increased linearly (P < 0.05) along with age of goslings, Meanwhile, the development of proteases in the intestine of goslings increased faster when compared with those of amylase, lipase and cellulase during the first four weeks after hatching. However, the increase of activities of proteases was less when compared with those of amylase or lipase. Birds fed with 16% CP diet had significantly (P < 0.05) less daily gain and feed conversion ratio. From the daily gain results, the estimated minimum and maximum protein requirements of goslings by broken-line method and quadratic regression assay were 19.88-- 21.10% during the starter period. Furthermore, the average weight and length of small intestine in goslings fed with 22% and 22- 24% CP diets had significantly (P < 0.05) heavier, respectively. There were significantly (P < 0.05) increased linear or quadratic when dietary protein level was increased. The SA of pepsin reached a plateau for goslings receiving the 24% CP diet at 4 weeks of age. The average SA of trypsin and chymotrypsin in pancreas decreased significantly (P < 0.05) to a lowest point when goslings fed with the 16% CP diet. Further, the SA of trypsin and chymotrypsin in duodenum increased (P < 0.05) quadratically as compared to goslings received 18 and 20% CP diets. However, the development of SA of proteases were similar to that of growth performance, with a closely positive correlation among trypsin, chymotrypsin and daily gain of goslings during the experimental period. The goslings fed with soybean meal ( SBM) diet had significantly (P < 0.05) heavier feed intake and daily gain as compared with corn gluten meal (CGM) diet. Moreover, the SBM and fish meal (FM) diets improved feed conversion ratio during experimental period. Further, the goslings received the CGM group had significantly (P < 0.05) lower weights of gizzard, proventriculus, liver and pancreas than other diets at 4 weeks of age. Furthermore, the weight and length of small intestine significantly (P < 0.05) decreased and shortened when goslings fed on CGM diet at 4 weeks of age. The SA of pepsin reached a plateau for goslings received the fermented soybean meal (FSM) or FM diets. The SA of trypsin and chymotrypsin significantly decreased when goslings fed with CGM diet. The goslings received the SBM or FM diets showed increasing and reaching a peak (P < 0.05) on the activity or SA of trypsin and chymotrypsin in duodenum at 4 weeks of age. These results indicated that the digestive tract and activities of proteases developed rapidly through the first two weeks of goslings. When dietary protein content was increased, there were significantly (P < 0.05) increased linear and quadratic during first two weeks and 3 to 4 weeks of age, respectively. There was a close positive correlation among trypsin, chymotrypsin and daily gain of goslings during the experimental period. The growth performance and development of digestive tract significantly decreased (P < 0.05) when goslings fed with the CGM diet. In conclusion, the SBM diet as a vegetable-protein feed could completely replace the animal protein feed such as FM diet during the starter period.
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Chen, Li Yi, and 陳立儀. "Effects of different dietary fiber levels on the activities of carbohydrases and proteases of goslings." Thesis, 1995. http://ndltd.ncl.edu.tw/handle/87389497746745804620.
Full textBooks on the topic "Goslings"
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ill, McMaster Jack, and Storytellers Ink (Firm), eds. Father goose & his goslings. Storytellers Ink, 1993.
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Gadallah, Fawziah. Forage quality and gosling nutrition in the lesser snow goose (Chen caerulescens caerulescens). National Library of Canada = Bibliothèque nationale du Canada, 1993.
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Robinson, Docia. Dos Palos Hospital records, August 1935 to April 1936: Amanda "Mickie" Gosling, RN director. D. Robinson, 2006.
Find full textBook chapters on the topic "Goslings"
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O’Regan, Gerard. "James Gosling." In Giants of Computing. Springer London, 2013. http://dx.doi.org/10.1007/978-1-4471-5340-5_28.
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Majdic, Gregor. "Gosling Following Their Mothers." In Fascinating Life Sciences. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-67212-6_14.
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Robinson, Lucy, and Ben Jones. "Queering the Grammar School Boy: Class, Sexuality and Authenticity in the Works of Colin MacInnes and Ray Gosling." In Youth Subcultures in Fiction, Film and Other Media. Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-73189-6_2.
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"Mock Goslings and Pear-nanas." In Swindled. Princeton University Press, 2020. http://dx.doi.org/10.2307/j.ctv10h9d77.8.
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"5. Mock Goslings and Pear-nanas." In Swindled. Princeton University Press, 2009. http://dx.doi.org/10.1515/9780691214085-006.
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Grasso, Christopher. "I Will Rule." In Teacher, Preacher, Soldier, Spy. Oxford University Press, 2021. http://dx.doi.org/10.1093/oso/9780197547328.003.0002.
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Kelso spent his first nine years, in the 1830s, in a crude cabin in backwoods Ohio with his parents and six siblings. He later told tales of wilderness life: an attack by wolves, a swarm of pigeons, an army of hungry squirrels. He remembered his mother beating his backside with a beech limb when, after trying to teach goslings to swim by holding them underwater, he drowned them. Thinking his baptism was another punishment for misbehavior, he tried to run away, and then, when captured, bit the minister in the leg. Descended from a line of independent Scots, he thought his name meant “I will rule.”
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Nordfjörd, Björn. "Criminal Undertakings: Nicolas Winding Refn, European Film Aesthetics, and Hollywood Genre Cinema." In Nordic Film Cultures and Cinemas of Elsewhere. Edinburgh University Press, 2019. http://dx.doi.org/10.3366/edinburgh/9781474438056.003.0028.
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This chapter explores Danish director Nicolas Winding Refn. Refn’s first feature Pusher (1996) was a local box-office success that helped usher in the era of the Nordic crime film, which includes his own follow-up Bleeders (1998) and two Pusher sequels (2004 and 2005). His American crime and gangster film, Drive (2011), is set in Los Angeles and is indebted to notable American classics of the genre. Reunited with Hollywood star Ryan Gosling, Refn continued to explore the international pedigree of the crime thriller in Only God Forgives (2013), where Gosling plays an American struggling to stay afloat in the Bangkok underworld. In Neon Demon (2016), Refn returns to Los Angeles, this time the world of fashion, where Hollywood gloss and European film aesthetics meet head-on. His three “American” films thus offer a striking blend of Hollywood genre and European art cinema traditions helping to explain their wildly mixed receptions.
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"GOSLING, Jessie W. (fl. 1870s) GOSSE, Philip (1879–1959)." In Dictionary Of British And Irish Botantists And Horticulturalists Including plant collectors, flower painters and garden designers. CRC Press, 2002. http://dx.doi.org/10.1201/b12560-681.
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"507 From Robert Gosling in Portsmouth to Robert Alden, overseer of St Peter, Colchester, 13 November 1825." In Records of Social and Economic History: New Series, Vol. 30: Essex Pauper Letters: 1731–1837, edited by Thomas Sokoll. British Academy, 2001. http://dx.doi.org/10.1093/oseo/instance.00167432.
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Jogestrand, Tomas, and Olav Thulesius. "The development of ultrasound in vascular disease in Sweden." In Ultrasound in Clinical Diagnosis. Oxford University Press, 2011. http://dx.doi.org/10.1093/oso/9780199602070.003.0014.
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The famous British scientist Sir Cyril A. Clarke in 1975 wrote the introduction for a new book, Arteries and Veins , with the following words: . . . In spite of all advances, mortality remains a steady 100 per cent and it is disorders of the arteries and veins which claim the majority of us. we sclerose, we clot, arrhythmias hit us, or our tubing wears out. By way of consolation, however, more of us now go the way of all flesh properly diagnosed and there are many ways of cheating the ancient enemy. . . . Clark at the time did not realize what advances were ahead of him, and the book he introduced with these dark lines included a chapter by R.G. Gosling and D.H. King which described a new promising technique of ultrasound angiography. Cyril Clark himself died at the age of 93! Blood flow measurements during resting conditions fail to detect any reduction of volume flow in patients with occlusive vascular disease, therefore for quantitative evaluation of the functional capacity of the peripheral circulation various functional tests implying increased circulatory demands needed to be introduced. The most useful clinical information could be obtained from peak-flow values after a period of obstruction and exercise followed by volume plethysmographic measurements of blood flow. Olav Thulesius introduced a foot ergometer in 1963 which allowed detection of maximal blood flow after graded muscular exercise. Its use was complicated and time-consuming when applied in conjunction with blood flow measurements with a water-filled volume plethysmograph. Therefore a faster and easier method for determination of peripheral blood flow was desirable. In 1967, the ultrasound scanning method for the detection of arterial blood flow signals in the diagnosis of fetal life during pregnancy was introduced in Sweden. This same principle became the method for detecting blood flow in peripheral blood vessels. The method used was a hand-held instrument which included two piezoelectric elements, one to transmit ultrasound signals and the other to receive the returning echoes back-scattered from the blood vessels. The instrument used for the detection of peripheral blood flow was the same as that for the detection of the fetal blood flow in pregnancy.
Conference papers on the topic "Goslings"
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IMarEST. "Final Programme - 14th International Naval Engineering Conference and Exhibition." In 14th International Naval Engineering Conference and Exhibition. IMarEST, 2018. http://dx.doi.org/10.24868/issn.2515-818x.2018.000.
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"Inspiring Naval Engineering" incorporating the International Ship Control Systems Symposium (iSCSS). Tuesday 2 – Thursday 4 October 2018 at the Technology and Innovation Centre, University of Strathclyde, Glasgow, UK. INEC/iSCSS 2018 at a glance: Over 300 expert participants; Over 100 peer-reviewed technical papers; The Sir Donald Gosling Award; 15 plus focussed exhibition stands; International attendance from over 18 countries; Excellent networking opportunities and social programme; The relaunch of the International Ship Control Systems Symposium (iSCSS) entitled "Revolutionary Technology Inspiring Ship Control".
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IMarEST. "Final Programme - International Ship Control Systems Symposium (iSCSS)." In International Ship Control Systems Symposium. IMarEST, 2018. http://dx.doi.org/10.24868/issn.2631-8741.2018.000.
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"Inspiring Naval Engineering" - 14th International Naval Engineering Conference and Exhibition incorporating the International Ship Control Systems Symposium (iSCSS). Tuesday 2 – Thursday 4 October 2018 at the Technology and Innovation Centre, University of Strathclyde, Glasgow, UK. INEC/iSCSS 2018 at a glance: Over 300 expert participants; Over 100 peer-reviewed technical papers; The Sir Donald Gosling Award; 15 plus focussed exhibition stands; International attendance from over 18 countries; Excellent networking opportunities and social programme; The relaunch of the International Ship Control Systems Symposium (iSCSS) entitled "Revolutionary Technology Inspiring Ship Control".
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Berinšterová, Marianna, Miroslava Bozogáňová, Monika Magdová, Jana Kapová, and Katarína Fuchsová. "PROCRASTINATION AND SELF-CONCEPT IN MORE/LESS CONSCIENTIOUS STUDENTS." In International Psychological Applications Conference and Trends. inScience Press, 2021. http://dx.doi.org/10.36315/2021inpact034.
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"Given its significant negative consequences for university students, procrastination has been studied extensively and shown to be associated with conscientiousness as a personality trait. Involving 333 university students doing teacher training programmes (68.5% female; Mage=20.51 (SD=1.61); 83.48% undergraduates doing a bachelor’s degree), our study aimed to explore the association between procrastination among more/less conscientious students and selected self-concept variables (self-control, self-efficacy, etc.). Our questionnaire was based on the Ten-Item Personality Inventory (Gosling, Rentfrow, Swann, 2003), the Self-Control Scale (Finkenauer, Engels, Baumeister, 2005), the Self-efficacy Scale (Ko?š, Hefteyova, Schwarzer, Jerusalem, 1993), and the Procrastination Scale for Student Populations (Gabrhelík, 2008); our control variables were gender and well- being (Subjective Well-Being Scale, Chan-Hoong, Soon, 2011). The sample was divided into two groups – (1) less conscientious and (2) more conscientious) – using the method of visual binning in SPSS 20. A t-test for independent samples and linear regression were used for data analysis. The less conscientious students in our sample reported a higher level of procrastination (t=6.479; df=310; p?0.001; Cohen's d=0.681). A linear model was conducted for both groups (the dependent variable being the level of procrastination, the independent variables being gender and the levels of self-control, self-efficacy, and well-being). Both models were significant ((1) F=8.449; p?0.001; R2=32.6; (2) F= 7.277; p?0.001; R2=25.7). Among the less conscientious students, the levels of self-control (?=-0.546; t=-5.262; p?0.001) and self-efficacy (?=-0.238; t=-2.092; p?0.001) were negatively associated with procrastination. Among the more conscientious students, the level of self-control (?=0.404; t=-3.929; p?0.001) was negatively associated with procrastination and “being a man” (0–man; 1–woman) (?=-0.307; t=-3.219; p?0.05) was significantly associated with the level of procrastination. The results of our study show trait and personality differences in the level of procrastination, highlighting the importance of self-control and self-efficacy development among university students. Interactive programmes with an impact on students’ self-concept can be a significant contribution to students’ ability to cope with their study requirements effectively. It could be argued that the limits of this study include cross-sectional and self-reported data."