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Littérature scientifique sur le sujet « Phytogen Supplementation »
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Articles de revues sur le sujet "Phytogen Supplementation"
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Zeeshan, Muhammad, Hafsa Zaneb, Saima Masood, Saima Ashraf, Imad Khan, Hafiz Faseeh Ur Rehman, Salahud Din et Khizar Hayat. « Morphological Modulation of Broiler Organs in Response to an Organic Acid–Phytogen Composite in Healthy Broilers ». Agriculture 12, no 6 (30 mai 2022) : 791. http://dx.doi.org/10.3390/agriculture12060791.
Texte intégralRésumé :
In this study, we investigated broiler growth traits, intestinal health and immune aggregates in response to supplementation of Origanum vulgare and Cinnamomum verum, citric acid and malic acid in drinking water at varying levels and durations on broiler. We randomly allocated 140 day-old broilers into four (4) groups, with each group having seven replicates (n = 5). A basal diet and water were provided to all the groups ad libitum in accordance with standard farming practices. Keeping group I as the control, group II was supplemented with 1 mL/3.3 L of water for 1–4 days, 1 mL/4 L from 15–18 days and 1 mL/4 L water from 26–29 days. Group III and IV were supplemented with 1 mL/4 L of water and 1 mL/6 L of water for 35 days, respectively. After the completion of the trial (day 35), two broilers per replicate (14 birds per group) were slaughtered to sample the visceral organs. The results demonstrated that the feed conversion ratio (FCR) and body weight gain improved (p ≤ 0.05) during the fourth and fifth week of the trial in group III in comparison to the control group. Although the small intestine villus height and villus-height-to-crypt-depth ratio improved (p ≤ 0.05) in group III, the muscularis externa thickness of the ileum was highest (p ≤ 0.05) in the control group. Similarly, the lymphatic follicular and nodular area of the immune organs improved (p ≤ 0.05) in group III. In all segments of the small intestine (duodenal, jejunal and ileal), the number of acidic and total goblet cells was highest (p ≤ 0.05) in group II. In conclusion, dietary Origanum vulgare, Cinnamomum verum, citric acid and malic acid at the dose of 1 mL/4 L of drinking water (group III) was the most effective in improving the growth performance, gut development and associated immune components in broilers.
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Camargo, Karine Dalla Vecchia, Débora Siniscalchi, Natalia Vilas Boas Fonseca, Maria Luisa Curvelo Silva, Carlos Eduardo Vicente Junior, Déborah Marcia Felipe Rodrigues, Carlos Eduardo Lima et al. « PSXII-26 Effect of Different Supplements Plus Phytogenic Additives on Ruminal Bacterial Community of Grazing Beef Cattle ». Journal of Animal Science 101, Supplement_3 (6 novembre 2023) : 638–40. http://dx.doi.org/10.1093/jas/skad281.743.
Texte intégralRésumé :
Abstract Changes in ruminal microbial community can affect animal productivity, nutrient utilization efficiency, and environmental impact. This study aimed to evaluate the effect of two levels of supplementation plus a blend of phytogenic additives (essential oils, saponins, and spices) on the ruminal bacterial community in beef cattle grazing tropical pastures. The experiment was conducted at the Beef Cattle Sector of UNESP, Jaboticabal-BR, and lasted 84 days. Nine castrated Nellore steers (body weight of 262 ± 31.2 kg) cannulated in the rumen were assigned to 3 simultaneous 3 × 3 Latin square designs. Animals were kept on pasture of Urochloa brizantha cv. Marandu during the rainy season. The treatments included ad libitum mineral supplementation (MS) as the control group, added mineral supplementation of 0.1% of body weight per day plus Cargill phytogenic blend (AMSP), and energetic-protein supplementation, 0.3% of body weight per day plus Cargill phytogenic blend (EPSP). Ruminal samples were collected on day 26 of each experimental period. A mix of liquid and solid rumen content (6 mL) was taken before supplementation and immediately frozen in liquid nitrogen. Total genomic DNA was extracted using the Quick-DNA Fecal/Soil Microbe kit. The V3-V4 hypervariable regions of the bacterial 16S rRNA gene were amplified using universal primers 341F and 806R. The PCR fragments were submitted to sequencing on an Illumina NovaSeq 6000 PE 250 platform. The sequences were processed using mothur, grouped into operational taxonomic units (OTUs) using a similarity cut-off value of 97%, and the bacterial OTUs were classified using the SILVA database. Bacterial community composition was compared between treatments using a Kruskal–Wallis test and Wilcoxon’s post-hoc test using Rstudio. A total of 27 phyla, 224 families, and 577 genera were assigned by the taxonomic analysis of the ruminal bacterial community (Figure 1). The phyla Bacteroidetes (44.45 ± 9.43) and Firmicutes (42.50 ± 7.18) represent over 86% of the total relative abundance in the rumen of Nellore steers and were not influenced by the supplementation (P ≥ 0.250). The relative abundances of the Spirochaetes phylum, Spirochaetaceae family, and Treponema genus decreased in the rumen of AMSP supplemented animals (P ≤ 0.037) and were similar between MS and EPSP (Figure 2). Additionally, the EPSP supplementation resulted in decreased relative abundances of TM7, TM7 family Incertae sedis, and TM7 genus Incertae sedis relative abundances compared with those in MS (P = 0.031) but not between AMSP and EPSP supplementations. The addition of phytotherapy blend in the supplements led to decreased SR1, SR1 family Incertae sedis, and SR1 genus Incertae sedis abundances in the rumen (P ≤ 0.012). This study indicates that the relative abundance of the dominant phyla was not affected by the supplementation levels, but the addition of the phytogenic blend in the supplement decreased the relative abundances of specific bacterial phyla, families, and genera,
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Olajumoke Temidayo Daramola et Patrick Acheneje. « Growth performance, serum metabolites, plasma protein fraction, meat lipid profile and antioxidant activities of breast meat of broiler chicken fed diets containing Cinnamomum ceylon powder, Zingiber officinale powder and Moringa oleifera leafmeal supplem ». International Journal of Science and Research Archive 13, no 1 (30 octobre 2024) : 3141–52. http://dx.doi.org/10.30574/ijsra.2024.13.1.1716.
Texte intégralRésumé :
An experiment was conducted to determine growth performance, serum metabolites, plasma protein fraction, meat lipid profile and antioxidant activities of meat of broilers as affected by Cinnamomium ceylon, Zingiber officinale and Moringa oleifera supplementation. A total of 112 day old chicks were allotted into four treatments replicated four times with seven birds per replicate in a completely randomized design (CRD). Basal diets were formulated for broiler starters (0-28days) and finisher phase (29-56) days. The basal diets were divided into 4 diets : diet 1- control diet without supplementation; diet 2- contained 0.2% Cinnamomum ceylon supplementation (CCS); diet 3- contained 0.2% Zingiber officinale supplementation (ZOS), diet 4-contained 0.2% Moringa oleifera leafmeal (MOLM) supplementation. The experiment lasted for 56 days. Results showed an improvement in final liveweight, weight gain, feed intake and feed conversion ratio of birds on 0.2% MOLM. Birds on phytogenic feed additives have lower values of urea, cholesterol, glucose, high density lipoprotein and low density lipoprotein. Birds administered phytogenic supplements exhibited much greater plasma albumin levels. Low levels of meat cholesterol, triglycerides and low density lipoprotein were found in birds fed phytogenic feed additives while high levels of high density lipoprotein were recorded for birds on phytogenic feed additives. The supplementation of broilers diets with phytogenic feed additives increased the glutathione peroxidase and superoxide dismutase and decreased lipid peroxidation. It was concluded that supplementation of broiler diets with Moringa oleifera leaf meal enhanced body weight gain, antioxidant activities also reduced cholesterol level in both serum metabolites and meat.
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May, Sabrina, Caroline Gonzalez Vega, Brooke Smith, Kory Moran et Ellyn Teddy. « 190 Phytogenic feed additive improved growth performance and health of nursery pigs in diets with and without combination of several feed additives ». Journal of Animal Science 102, Supplement_2 (1 mai 2024) : 138–39. http://dx.doi.org/10.1093/jas/skae102.154.
Texte intégralRésumé :
Abstract An experiment was conducted to test the hypothesis that a phytogenic feed additive (Fresta Protect, Delacon, Austria) would improve growth performance and health indices of nursery pigs fed diets with or without other feed additives. Weaned pigs (n = 1,380; 19 d old with initial body weight (BW) = 5.5 ± 0.3 kg] were allotted to 10 replicate pens per treatment (23 pigs per pen) in 2 barns. Pens were blocked by location within barn and randomly allotted to one of 6 treatments: 1) Basal nursery feed without other feed additives (NC), 2) NC + 0.1% phytogenic (NC+P0.1), 3) Basal nursery feed with other feed additives such as organic acids, antioxidants, and blend of preservatives (PC), 4) PC + 0.05% phytogenic (PC+P0.05), 5) PC + 0.1% phytogenic (PC+P0.1), or 6) PC + 0.2% phytogenic (PC+P0.2). The experiment lasted for 39 d, with pigs fed experimental diets during phase 1 (d 0-10) and 2 (d 10-23) and a common diet without addition of PC or phytogenic during phase 3 (d 23-39). Pig and feed weights were recorded at the beginning and end of each phase. Performance data were analyzed using the lme4 package of R with treatment as fixed effect and barn and pen location within barn as random effects. Contrasts were used to test linear and quadratic effects of phytogenic in PC diets (diets 3 to 6), and diets 1, 2, 3, and 5 were used to compare main effects of phytogenic, diet type, and interaction between phytogenic and diet type. Results indicated that pigs fed diets with phytogenic, regardless of diet type, had increased (P < 0.05) average daily gain (ADG) and gain to feed ratio (G:F) in phase 1, final BW, ADG, and average daily feed intake (ADFI) in phase 2, as well as overall ADG and ADFI. The changes observed in final BW and ADFI in phase 2 had a quadratic response (P < 0.05) as dietary inclusion of phytogenic increased, whereas overall ADG linearly increased (P < 0.05) with greater levels of phytogenic supplementation (Table 1). In phase 2, the phytogenic supplementation increased G:F to a greater extent when diets did not contain other feed additives compared with PC diets (phytogenic x feed type interaction: P < 0.05). Phytogenic supplementation numerically reduced mortality. Pigs fed PC diets, regardless of inclusion of phytogenic, had increased (P < 0.05) final BW, ADG, and G:F in phase 1, final BW, ADG, and ADFI in phase 2, and overall ADG and ADFI compared with pigs fed NC diets. In conclusion, phytogenic supplementation with an optimal dietary inclusion of 0.1% improved growth performance, regardless of supplementation of other feed additives in the diet, and diets containing additional feed additives further improved performance of pigs.
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Daud, M., M. A. Yaman et Zulfan. « Effects of rations containing leubiem fish (Chanthidermis maculatus) waste and phytogenic suplementation on local ducks performance in the starter phase ». IOP Conference Series : Earth and Environmental Science 922, no 1 (1 novembre 2021) : 012041. http://dx.doi.org/10.1088/1755-1315/922/1/012041.
Texte intégralRésumé :
Abstract This study aims to examine the potential use of leubiem fish (Chanthidermis maculatus) waste and phytogenic supplementation on ration, in order to increase the performance of local ducks in the starter phase. This study used 100 local ducks aged 1 week old, and maintained them until 8 weeks old. The ducks were placed in 5 treatments and 4 replications groups (5 ducks / repetition). The study was conducted experimentally, using a Completely Randomized Design (CRD), consisting of 5 ration treatments, including: R1 (control); R2 (basal ration containing leubiem fish skin flour 10% + phytogenic 0.5%); R3 (basal ration containing leubiem fish head flour 10% + phytogenic 0.5%); R4 (basal ration containing leubiem fish bone flour 10% + phytogenic 0.5%) and R5 (basal ration containing leubiem fish gill flour + phytogenic 0.5%). Observed variables were feed consumption, body weight gain, final weight, feed conversion, and local duck mortality in the starter phase. The data obtained were both analyzed using Analysis of Variance (ANOVA) and Duncan’s multiple range test. The results showed that the use of leubiem fish waste and phytogenic supplementation in the ration both increased the performance of local ducks in the starter phase and had a significant effect (p <0.05) on ration consumption, weight gain, and final weight. However, they had no significant effect on feed conversion and local duck mortality in the starter phase. It was concluded that the use of leubiem fish (10% bone meal) and phytogenic supplementation 0.5% in the ration was able to increase body weight gain, and the final weight of the starter phase local ducks (aged 1-8 weeks).
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Siniscalchi, Débora, Karine Dalla Vecchia Camargo, Natalia Vilas Boas Fonseca, Marcelo Augusto Oliveira Castro, Isadora Alves Dornellas, Willian Aparecido De Souza, Lucas Dos Santos Del Vecchio et al. « PSX-13 Effects of Different Supplementations During the Rainy Season on Nitrogen Metabolism of Beef Cattle Steers on Tropical Pasture ». Journal of Animal Science 101, Supplement_3 (6 novembre 2023) : 508–9. http://dx.doi.org/10.1093/jas/skad281.600.
Texte intégralRésumé :
Abstract Phytogenic additives are used as food additives in ruminant nutrition due to their potential to alter the nitrogen (N) excretion route and minimize N emissions into the environment. This study aimed to evaluate the effect of two levels of supplementation plus a mixture of phytogenic additives (essential oils, saponins and spices) on the efficiency of N utilization by beef cattle in tropical pastures. The experiment was conducted at the Beef Cattle Sector of UNESP, Jaboticabal-BR, and lasted 84 days. Nine castrated Nelore steers (body weight 262 ± 31.2 kg) cannulated in the rumen were distributed in 3 simultaneous 3 × 3 Latin square designs. The animals were kept in pasture of Urochloa brizantha cv. Marandu during the rainy season. Treatments included ad libitum mineral supplementation (MS) as a control group, mineral supplementation added 0.1% of body weight per day plus Cargill phytogenic mixture (AMSP) and energy-protein supplementation, 0.3% of body weight per day plus Cargill phytogenic mixture (EPSP). Point urine and fecal samples were collected in the last three days of each experimental period. The concentration of total nitrogen in the urine was analyzed by the Kjeldahl procedure. The nitrogen composition of forage, supplements and feces was estimated by near-infrared spectroscopy (NIRS) using a modular FT-NIR spectrometer (NIRFlex N500, Büchi Labortechnik AG, Flawil, Switzerland). Nitrogen retention was calculated using the following equation: NR = N intake (g/d) – [N excretion in feces (g/d) + N excretion in urine (g/d)]. The nitrogen metabolism data were analyzed as a 3 × 3 Latin square with 3 replications, balanced for residual effects. Considering as fixed effect the treatment, and as random effect the Latin square, period, steer, steer × period interaction, and residues corresponding to the model. The data obtained were submitted to ANOVA and Tukey's test (P ≤ 0.05), using the statistical program R, version 3.4.4. The addition of phytogenic additives in the supplements led to decreased (P < 0.036) urinary excretion of N (g/day) from 41.16 g/day to 28.38 g/day and urinary excretion of N (% of N intake) from 30.66% to 23.21%, but did not differ between the different levels of phytogenic supplementation (Table 1). In addition, retained N (% of N intake) was greater (P < 0.01) in animals supplemented with AMSP and EPSP compared with MS, increasing N retention from 26.78% to 33.88%. This study indicates that the different levels of supplementation plus the addition of the phytogenic mixture improved the efficiency of N utilization by decreasing the excretion of N in the urine and increasing the retained N compared with MS supplementation.
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Althaber, Colton A., Ken Coffey, James D. Caldwell et Michael C. Pruden. « 170 Effects of Dietary Phytogenic Supplementation to a Finishing Diet on Intake, Digestibility, Nitrogen Balance and Carcass Measures ». Journal of Animal Science 98, Supplement_4 (3 novembre 2020) : 125. http://dx.doi.org/10.1093/jas/skaa278.228.
Texte intégralRésumé :
Abstract Dietary manipulations to include tannins can change the proportion and amount of nitrogen (N) excreted in the urine and feces as well as improve N-use efficiency in ruminants. Our objective was to determine the effects of different levels of phytogenic supplementation (Actifor®) on intake, digestibility, carcass measures, and N balance of lambs offered a corn-based finishing diet. Twenty-six lambs (31.5 ± 5.39 kg BW) were allocated randomly to 1 of 3 corn-based finishing diets (85% concentrate) that were offered for ad libitum consumption. Lambs were housed individually in 1 × 1.5-m pens with plastic-coated grate flooring (n = 18; 6/trt) or 1.5 × 4.3-m pens with rubber mat flooring (n = 8; 2 or 3/trt). Diets were not supplemented or supplemented with 4 or 8 g/d of Actifor® (n = 8, 9, and 9 lambs/trt, respectively). A 7-d total fecal and urine collection period (n = 6 lambs/trt) began on d 43. On d 50, rumen samples were taken at 0800, 1100, and 1400 h for measurement of pH and VFA concentrations. Data were analyzed using the MIXED procedure of SAS, and orthogonal linear and quadratic contrasts were used to assess phytogenic supplementation level effects. Intake and digestibility of DM and OM were not different across treatments (P ≥ 0.32). Average fecal N and lamb shrink before slaughter increased linearly (P ≤ 0.05) with increasing levels of phytogenic supplementation. Propionate and acetate:propionate decreased (P ≤ 0.05) and acetate, valerate, and pH tended to increase quadratically (P ≤ 0.08) with increasing phytogenic inclusion. Back-fat and yield grade tended (P = 0.06) to decrease linearly and dressing percentage tended (P = 0.06) to decrease quadratically with increasing phytogenic inclusion. Phytogenic supplementation increased average fecal N and improved some carcass measures, but did not affect diet digestibility.
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Morón-Ortiz, Ángeles, Antonis A. Karamalegkos, Paula Mapelli-Brahm, Marina Ezcurra et Antonio J. Meléndez-Martínez. « Phytoene and Phytoene-Rich Microalgae Extracts Extend Lifespan in C. elegans and Protect against Amyloid-β Toxicity in an Alzheimer’s Disease Model ». Antioxidants 13, no 8 (31 juillet 2024) : 931. http://dx.doi.org/10.3390/antiox13080931.
Texte intégralRésumé :
Phytoene is a colourless carotenoid widely available from dietary sources and a precursor for the synthesis of other carotenoids. Although present at high concentrations across different tissues, phytoene is largely viewed as not having physiological activity. Here, we utilize the model organism C. elegans to show that phytoene is bioactive and has anti-ageing properties. Supplementation with phytoene protects against oxidative damage and amyloid-β42 proteotoxicity (a major pathology of Alzheimer’s disease), and extends lifespan. We also examine extracts from two microalgae, Chlorella sorokiniana and Dunaliella bardawil. We show that the extracts contain high levels of phytoene, and find that these phytoene-rich extracts have protective effects similar to pure phytoene. Our findings show that phytoene is a bioactive molecule with positive effects on ageing and longevity. Our work also suggests that phytoene-rich microalgae extracts can utilized to produce foods or supplements that promote healthy ageing and prevent the development of chronic age-related diseases.
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Camargo, Karine Dalla Vecchia, Débora Siniscalchi, Natalia Vilas Boas Fonseca, Willian Aparecido De Souza, Marcelo Augusto Oliveira Castro, Barbara Carolina Afonso, Isadora Alves Dornellas et al. « PSXI-30 Ruminal Bacterial Diversity Indexes of Grazing Beef Cattle Receiving Different Supplements Plus Phytogenic Additives ». Journal of Animal Science 101, Supplement_3 (6 novembre 2023) : 634–36. http://dx.doi.org/10.1093/jas/skad281.739.
Texte intégralRésumé :
Abstract The addition of phytogenic compounds that have antimicrobial activity in cattle supplements can promote changes in ruminal bacterial diversity. This study aimed to evaluate the effect of two levels of supplementation plus a blend of phytogenic additives (essential oils, saponins, and spices) on the measures of alpha and beta diversity in the rumen of beef cattle grazing tropical pasture. The experiment was carried out in the Beef Cattle Sector of UNESP, Jaboticabal-BR. The trial lasted 84 days and nine castrated Nellore steers (body weight of 262 ± 31.2 kg) cannulated in the rumen were assigned in 3 simultaneous 3 × 3 Latin square designs. Animals were kept on the pasture of Urochloa brizantha cv. Marandu in the rainy season. The treatments were: ad libitum mineral supplementation (MS) as control group; added mineral supplementation, 0.1% of body weight per day plus Cargill phytogenic blend (AMSP); and energetic-protein supplementation, 0.3% of body weight per day plus Cargill phytogenic blend (EPSP). Ruminal samples were collected on day 26 of each experimental period. A mix of liquid and solid rumen content (6 mL) was taken before supplementation, placed in cryogenic tubes, and immediately frozen in liquid nitrogen. All samples were stored at −80 °C until DNA extraction and analysis. Total genomic DNA was extracted using the Quick-DNA Fecal/Soil Microbe Miniprep kit. The V3-V4 hypervariable regions of the bacterial 16S rRNA gene were amplified primers 341F (CCTACGGGNGGCWGCAG) and 806R (GGACTACHVGGGTWTCTAAT). The PCR fragments were submitted to sequencing on an Illumina NovaSeq 6000 PE 250 platform. The sequences were processed using mothur, grouped into operational taxonomic units (OTUs) using a similarity cut-off value of 97%, and the bacterial OTUs were classified using the SILVA database. Alpha diversity indices including Shannon, Simpson, Fisher, Chao1, and ACE, were calculated using the phyloseq package, while beta diversity was determined using the vegan package, both in Rstudio. Alpha diversity indices were compared between treatments using a non-parametric Kruskal–Wallis test and Wilcoxon’s post-hoc test. Beta diversity was tested using permutational multivariate analysis of variance (PERMANOVA) based on the Bray-Curtis similarity index. The AMSP and EPSP did not affect measures of alpha diversity (Figure 1), such as Shannon and Fisher indices (P = 0.219) as well as the richness index measured using Chao1 and ACE (P ≥ 0.363). A negative effect of supplementation on alpha diversity (P = 0.004) was only observed with Simpson’s Index of Diversity. Additionally, the supplementation did not change the beta-diversity of the ruminal bacterial community based on Bray–Curtis similarity index (P = 0.510; Figure 2). In conclusion, the addition of phytogenic compounds in the two levels of supplementation showed only a minor impact on the alpha diversity in the rumen of grazing beef cattle.
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Ren, Xipeng, Maria M. Whitton, Sung J. Yu, Tieneke Trotter, Yadav S. Bajagai et Dragana Stanley. « Application of Phytogenic Liquid Supplementation in Soil Microbiome Restoration in Queensland Pasture Dieback ». Microorganisms 11, no 3 (23 février 2023) : 561. http://dx.doi.org/10.3390/microorganisms11030561.
Texte intégralRésumé :
Pasture production is vital in cattle farming as it provides animals with food and nutrients. Australia, as a significant global beef producer, has been experiencing pasture dieback, a syndrome of deteriorating grassland that results in the loss of grass and the expansion of weeds. Despite two decades of research and many remediation attempts, there has yet to be a breakthrough in understanding the causes or mechanisms involved. Suggested causes of this phenomenon include soil and plant microbial pathogens, insect infestation, extreme heat stress, radiation, and others. Plants produce a range of phytomolecules with antifungal, antibacterial, antiviral, growth-promoting, and immunostimulant effects to protect themselves from a range of environmental stresses. These products are currently used more in human and veterinary health than in agronomy. In this study, we applied a phytogenic product containing citric acid, carvacrol, and cinnamaldehyde, to investigate its ability to alleviate pasture dieback. The phytogenic liquid-based solution was sprayed twice, one week apart, at 5.4 L per hectare. The soil microbial community was investigated longitudinally to determine long-term effects, and pasture productivity and plant morphometric improvements were explored. The phytogenic liquid significantly improved post-drought recovery of alpha diversity and altered temporal and spatial change in the community. The phytogenic liquid reduced biomarker genera associated with poor and polluted soils and significantly promoted plant and soil beneficial bacteria associated with plant rhizosphere and a range of soil benefits. Phytogenic liquid application produced plant morphology improvements and a consistent enhancement of pasture productivity extending beyond 18 months post-application. Our data show that phytogenic products used in the livestock market as an alternative to antibiotics may also have a beneficial role in agriculture, especially in the light of climate change-related soil maintenance and remediation.
Thèses sur le sujet "Phytogen Supplementation"
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Reyes, Camacho David Angel. « Studying the effects of phytogenic supplementation as feeding strategies to overcome physiological and productive challenges in hyperprolific sows and their offspring ». Doctoral thesis, Universitat Autònoma de Barcelona, 2021. http://hdl.handle.net/10803/673971.
Texte intégralRésumé :
La selecció genètica de línies de truges hiperprolífiques ha incrementat considerablement la mida de la ventrada en les últimes dècades. L’augment de nombre de garrins és un gran desafiament per a la fisiologia i la productivitat tant de la truja com de la seva descendència durant la gestació, el part i la lactància. A més, el post-deslletament és un període caracteritzat per la neofòbia alimentària, on els garrins comunament pateixen una baixa d’ingesta d’aliment i un creixement deficient. Així, en la indústria porcina moderna, l’establiment d’estratègies d’alimentació adequades aplicades a truges i garrins és un objectiu primordial per aconseguir una producció porcina segura, eficient i sostenible. Els additius fitogénicos per a pinsos (PFAs) poden definir-se com combinacions estandarditzades i científiques de compostos bioactius derivats de plantes que promouen la salut i el benestar de la ramaderia i l’eficiència de l’creixement i la producció. El propòsit d’aquesta tesi és explorar el benefici potencial d’una suplementació dietètica de PFAs com a estratègies d’alimentació primerenca per superar els desafiaments que enfronten les truges hiperprolífiques i les seves cries, però també els garrins deslletats.La selección genética de líneas de cerdas hiperprolíficas ha incrementado considerablemente el tamaño de la camada en las últimas décadas. El aumento del número de lechones es un gran desafío para la fisiología y la productividad tanto de la cerda como de su descendencia durante la gestación, el parto y la lactancia. Además, el post-destete es un periodo caracterizado por la neofobia alimentaria, donde los lechones comúnmente sufren una baja de ingesta de alimento y un crecimiento deficiente. Así, en la industria porcina moderna, el establecimiento de estrategias de alimentación adecuadas aplicadas a cerdas y lechones es un objetivo primordial para lograr una producción porcina segura, eficiente y sostenible. Los aditivos fitogénicos para piensos (PFAs) pueden definirse como combinaciones estandarizadas y científicas de compuestos bioactivos derivados de plantas que promueven la salud y el bienestar del ganado y la eficiencia del crecimiento y la producción. El propósito de esta tesis doctoral es investigar el beneficio potencial de una suplementación dietética de PFAs como estrategias de alimentación temprana para superar los desafíos que enfrentan las cerdas hiperprolíficas y sus crías, pero también los lechones destetados.
Genetic selection for hyperprolific sow lines has increased litter size considerably in the last decades. The increased number of piglets is a major challenge for both sow and its offspring physiology and productivity during gestation, at parturition and during lactation. In addition, post-weaning is a period characterized by feed neophobia, where piglets commonly suffer the low feed intake and impaired growth. Thus, in modern swine industry, the establishment of proper feeding strategies applied for sows and piglets are a main goal to achieve a safe, efficient, and sustainable pig production. Phytogenic feed additives (PFAs) may be defined as standardized, science-based combinations of plant-derived bioactive compounds that promote livestock health and well-being and growth and production efficiency. The purpose of this PhD thesis is, to investigate the potential benefit of a dietary supplementation of PFAs as early feeding strategies to overcome the challenges that face hyperprolific sows and their offspring, but also weanling piglets.
Universitat Autònoma de Barcelona. Programa de Doctorat en Producció Animal