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Littérature scientifique sur le sujet « Artificial insemination »

Auteur : Grafiati
Publié le 4 juin 2021
Mis à jour le 30 juillet 2024

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Articles de revues sur le sujet "Artificial insemination"

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Estiwati, Uliya, et Didik Nugraha. « Upaya Pemerataan Inseminasi Buatan pada Ternak Sapi di Kelurahan Laweyan Kota Surakarta ». Nuras : Jurnal Pengabdian Kepada Masyarakat 3, no 3 (6 juillet 2023) : 99–105. http://dx.doi.org/10.36312/nuras.v3i3.202.

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The purpose of this community service activity is to equalize artificial insemination in cattle in Laweyan Village, Surakarta City. While the results obtained from this activity are if the government does free artificial insemination in Laweyan Village, it will further improve the economy of cattle breeders in Laweyan Village and increase the population of cross-breeding cattle in Laweyan Village. The artificial insemination program was carried out in Laweyan Sub-District, with 20 cattle breeders and 60 cows. In this activity, the implementation team carried out several activities to carry out the artificial insemination program. The number of female cows in all breeders is 60 cows, out of 60 cows we give the first hormone injection simultaneously within 1 day, after that we wait for the cows to go into heat for 11-12 days if there is no heat for 11-12 days we do the second injection, after that we wait for the cows to go into heat for 2-3 days, when the cows go into heat we wait for the right time to be artificially inseminated, then the heat for adult cows is 17 days .8 hours with a range of 2.4-28 hours while for heifers it is 15.3 hours, all activities take place according to directions from the local inseminator and veterinarian. If the farmer's cow starts to go into heat, we and the inseminator and the veterinarian perform artificial insemination, the success of artificial insemination can be determined by observing the cow's estrus cycle 21 days after the artificial insemination is carried out and the cow does not experience the first estrus, and also does not experience the second estrous cycle, then the cow is declared pregnant at 42 days. The number of 60 cows that received artificial insemination injections, the percentage of successful artificial insemination injections of all cows was 65%, it can be said that the artificial insemination injections that were carried out were successful.
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Fennessy, P. F., C. G. Mackintosh et G. H. Shackell. « Artificial insemination of farmed red deer (Cervus elaphus) ». Animal Science 51, no 3 (décembre 1990) : 613–21. http://dx.doi.org/10.1017/s0003356100012654.

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ABSTRACTSix experiments involving the artificial insemination (AI) of a total of 300 female red deer (hinds) with frozen-thawed red deer semen (collected by electro-ejaculation) were conducted over 3 years. Insemination took place at fixed times following various oestrous synchronization procedures using progesterone withdrawal and treatment with pregnant mare's serum gonadotropin (PMSG). In the 1st year, the experiments evaluated basic AI techniques in which pregnancy rates were 45% in 20 hinds receiving two inseminations per vaginam (PV) and 56% in 27 hinds inseminated by the laparoscopic intrauterine method (IU). In the 2nd year, the experiments involved comparisons of the progesterone regime, one or two PV inseminations, and the timing of a single PV insemination. There was no effect of replacement of the progesterone device after 9 days and withdrawal 3 days later compared with the use of one device for the whole period in two experiments. The pregnancy rate for a double PV insemination was significantly higher than for a single PV insemination (58 and 34%; P < 0·05) and there was also a small effect of timing of insemination relative to the synchronization treatment. In the 3rd year all hinds were inseminated by the IU method. The experiments involved a comparison of various times of AI following progesterone withdrawal and a comparison of the progesterone regime. The overall pregnancy rate for 63 hinds inseminated was 56% with no difference between three times of insemination (48, 52 and 55 h). In the second experiment, the difference in pregnancy rate between treatment with progesterone for 15 days and 12 days (44 and 72% for 18 hinds per group) was not significant, but the interaction between the length of progesterone treatment and insemination time was significant (P < 0·05), with the 12-day progesterone/55 h insemination giving a much higher pregnancy rate than the 15-day/55 h insemination (89 and 20% respectively). Although no experiments involved direct comparisons of the routes of insemination, overall pregnancy rates were 56% for IU, 53% for double PV and 35% for single PV inseminations.
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Senatore, E. M., S. Verberckmoes, M. Pascale et G. A. Presicce. « 21DEEP UTERO-TUBAL SEMEN DEPOSITION IN MEDITERRANEAN ITALIAN BUFFALOES USING A NEW ARTIFICIAL INSEMINATION DEVICE ». Reproduction, Fertility and Development 16, no 2 (2004) : 133. http://dx.doi.org/10.1071/rdv16n1ab21.

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The use of AI in the buffalo species is still marginal due to traditional lower conception rates when compared to cattle. However recently a number of studies in this field have revealed a promising increase in the efficiency of synchronization protocols for AI linked to more acceptable pregnancy rates. The possibility of using lower spermatozoa concentration of high quality buffalo bulls for AI without reduction in pregnancy outcome can be an additional offset, especially if such spermatozoa can be sexed and used for better reproductive management in buffalo farms. Within this conceptual framework, a new artificial insemination device for semen deposition near the utero-tubal junction (UTJ) in cattle (Ghent device), developed at the University of Ghent (Belgium), has been used in this study. The Ghent device is made of disposable materials and consists of 2 hollow plastic tubes, wherein a catheter filled with semen is introduced. The outer tube is completely rigid, while the inner tube consists of a rigid caudal end and a flexible cranial tip. The outer plastic tube can move independently from the inner tube. Once the insemination device is introduced into the uterine body, the inner tube with its flexible tip is moved forward. The flexible tip makes it possible to follow the curvature of the contractile uterus of the estrous cow, but excludes the use of Cassou straws. The semen is then expelled from the catheter by means of 0.1mL of air followed by 0.6mL of physiological saline solution. To assess the efficacy of the new Ghent device, 67 buffalo cows (Bubalus bubalis) were inseminated during a field trial. Two different insemination methods were used: (1) insemination with the conventional insemination device in the uterine body, and (2) insemination with the Ghent device near the utero-tubal junction ipsi-lateral to the site of ovulation. Artificial insemination was performed twice at 72 and 96hrs after administration of prostaglandins to buffaloes bearing a functional corpus luteum as recorded during ultrasound monitoring. Conventional inseminations were performed with full (16–20×106) and half (8–10×106) insemination doses of frozen-thawed semen, while UTJ-inseminations were performed with full, half and quarter (4–5×106) insemination doses. When inseminations were performed with the conventional insemination device, halving the insemination dose resulted in a non-significant decrease of conception rates from 53% (8/15) to 42% (8/19). However, no difference in conception rates was observed when UTJ-inseminations were performed with a full, half or quarter standard insemination dose: 50% (6/12), 45% (5/11) and 50% (5/10), respectively. Despite the limited number of inseminations performed, this preliminary field trial demonstrates that the Ghent device is suitable for the insemination of buffaloes under field conditions, and that UTJ inseminations can be performed with only one-fourth of the standard insemination dose without a reduction in conception rates.
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James, David N. « Artificial Insemination ». Philosophy and Theology 2, no 4 (1988) : 305–26. http://dx.doi.org/10.5840/philtheol19882410.

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Guttmacher, Alan F. « ARTIFICIAL INSEMINATION ». Annals of the New York Academy of Sciences 97, no 3 (15 décembre 2006) : 623–31. http://dx.doi.org/10.1111/j.1749-6632.1962.tb34673.x.

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IIZUKA, RIHACHI. « Artificial Insemination. » Annals of the New York Academy of Sciences 626, no 1 Frontiers in (juin 1991) : 399–413. http://dx.doi.org/10.1111/j.1749-6632.1991.tb37932.x.

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A., SUDRAJAT, R. J. ASRAF, S. UTOMO et R. F. CHRISTI. « THE EFFECT OF INFLUENCE OF EXPERIENCE AND AGE OF THE ARTIFICIAL INSEMI- NATION OFFICER ON THE SUCCESS OF ARTIFICIAL INSEMINATION IN DAIRY COWS ». Majalah Ilmiah Peternakan 26, no 2 (4 février 2024) : 90. http://dx.doi.org/10.24843/mip.2023.v26.i02.p04.

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Research on the effect of influence of experience and age of the artificial insemination officer on the success of artificial insemination (AI) in dairy cows has been conducted. This study aims to determine and examine the ef- fect of influence of experience and age of the artificial insemination officer on the success of artificial insemination (AI) in dairy cows. The research was conducted in December 2022–January 2023 in Lembang District, Bandung Barat. The method used is the survey method. The material used was an artificial insemination officer at the Kope- rasi Peternak Sapi Bandung Utara (KPSBU) Lembang. The variables observed to determine AI success are service conception (S/C), conception rate (C/R). The data analysis used in this study is quantitative descriptive analysis and simple correlation analysis. The results showed that the AI officer experience was an average of 19 years and an average age of 39 years. Average S/C value is 1.84 , Average C/R value is 64.50%. The results of a simple correlation analysis showed that the experience and age of the inseminator had no real effect (P>0.05) on the success of AI in dairy cows. It was concluded that the success rate of AI in dairy cattle based on S/C and CR in Lembang District was good, but the experience and age of the artificial insemination officer did not have a significant effect on the success of artificial insemination in dairy cows.
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Waddy, S. L., et D. E. Aiken. « Fertilization and Egg Retention in Artificially Inseminated Female American Lobsters, Homarus americanus ». Canadian Journal of Fisheries and Aquatic Sciences 42, no 12 (1 décembre 1985) : 1954–56. http://dx.doi.org/10.1139/f85-242.

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Female American lobsters, Homarus americanus, seldom are receptive to mating more than 24 h after they molt, a fact that complicates breeding programs in large facilities where animals are held individually. Artificial insemination can eliminate this problem, but preliminary studies have indicated poor fertilization success from intermolt inseminations. In the present study, 86 female American lobsters of wild and cultured stock were artificially inseminated in all postmolt and intermolt stages, 64 subsequently spawned, and 98% successfully fertilized their eggs, indicating no constraint of molt stage on success of insemination. Of artificially inseminated females, 50% of wild stock and 7% of cultured stock carried their eggs to hatch.
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Cox, John. « Equine Artificial Insemination ». Veterinary Journal 164, no 2 (septembre 2002) : 162–63. http://dx.doi.org/10.1053/tvjl.2001.0644.

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Yates, Daniel J., et Michael D. Whitacre. « Equine Artificial Insemination ». Veterinary Clinics of North America : Equine Practice 4, no 2 (août 1988) : 291–304. http://dx.doi.org/10.1016/s0749-0739(17)30642-9.

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Thèses sur le sujet "Artificial insemination"

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Smith, Stuart. « Reproductive performance and artificial insemination in pigs ». Thesis, University of Nottingham, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.321459.

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Dyer, Silke Juliane. « Strategies to improve artificial insemination by donor ». Master's thesis, University of Cape Town, 1997. http://hdl.handle.net/11427/26264.

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Artificial insemination with donor sperm is a widely accepted form of treatment for severe male factor infertility. The introduction of quarantined, cryopreserved semen and the associated reduction in cycle fecundity when compared to fresh semen necessitated the development of strategies to improve the performance of frozen sperm. A prospective randomised clinical trail was undertaken in the Reproductive Medicine Unit at Groote Schuur Hospital to compare intrauterine insemination with intracervical insemination in a therapeutic donor insemination program with cryopreserved semen. The method of insemination was alternated in successive cycles in each patient after intitial randomised selection. Forty three patients underwent 61 intracervical insemination cycles and 48 intrauterine insemination cycles. Strict cycle control was exercised and the timing and frequency of insemination followed a specific protocol. Eighteen clinical pregnancies occurred following eleven intrauterine insemination cycles (22.9% per cycle) and seven intracervical insemination cycles (11.5% per cycle). Treatment outcome was influenced by patient age, the severity of the male factor and endometriosis. Most pregnancies followed insemination with 15 to 25 million motile sperm. Sperm fecundity differed amongst donors. The findings of our study and the current literature suggest that intrauterine insemination improves cycle fecundity in therapeutic donor insemination cycles with frozen donor sperm.
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Ahangari, Yousef Jarari. « Cryopreservation of ram semen for artificial insemination ». Thesis, Bangor University, 1992. https://research.bangor.ac.uk/portal/en/theses/cryopreservation-of-ram-semen-for-artificial-insemination(25836205-fd80-43ad-a725-ac602fb33b87).html.

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A theoretical study showed that Al can greatly affect the efficiency of sheep breeding schemes provided fertility is maintained at the highest levels. Factors that affect the survival of ram spermatozoa during preservation were studied. A pH range between 6 and 7 was well tolerated. The addition of 4% (v/v) glycerol to the diluted ram semen in Tris buffer lowered the motility and survival of spermatozoa during 5 hours of storage at 30'C. Following insemination of chilled ram semen, with and without glycerol in the diluent, lambing percentages of 59% and 73% respectively were obtained. Ram semen was frozen in 0.25 ml straws using various cooling combinations. The optimal procedure was found to be to cool rapidly from 5'C to -120'C at -20'C/min. When semen so treated was compared in a fertility trial with semen frozen by the pellet method of Evans and Maxwell (1987), lambing percentages of 14% and 18% respectively were obtained. Attempts were made to formulate a vitrifying diluent for ram semen. A method was developed for the assessment of semen in highly concentrated cryoprotective solutions. Semen tolerated 10% concentrations of each of glycerol, acetamide and propylene glycol applied together, but when concentrations were raised above this level sperm mortality was very high. A simple spectrophotometric procedure for the objective assessment of vigour of ram semen was developed and tested. Raffinose 66 mM in the freezing diluent improved the post-thawing revival rate of spermatozoa from 46% to 71%, and increased the post-thawing recovery of the swimmingup vigour (P< 0.01). Raffinose treatment reduced the ATP content of semen but did not reduce the rate of glucose oxidation by diluted spermatozoa at either the pre-freezing or post-thawing stages. Frozen storage of ram spermatozoa as pellets was best achieved using two volumes of Tris buffer diluent containing 18% (v/v) egg-yolk, 6% (v/v) glycerol and 66 mM raffinose to one volume of semen. The diluted semen was chilled to 5'C and frozen as 0.10 ml pellets on dry ice. For frozen storage of ram semen in 0.25 ml straws, best results were obtained when the Tris buffer diluent contained 18% (v/v) egg-yolk, 9% (v/v) glycerol and 66 mM raffmose, and cooling was at a rate of -30'C/min from 5'C to -120'C. Non-return rates were 21%, 20% and 31% for ewes inseminated with semen samples frozen as standard 0.20 ml pellets, as raffinose containing 0.10 ml pellets, and as raffinose containing 0.25 ml straws respectively. Of the in vitro tests, only the swim-up test was correlated with non-return rates (r=0.904, P< 0.1). Post-thawing survival of the spermatozoa was improved by the addition of raffinose which had no deleterious effect on fertility.
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Laffoon, Michael R. « Artificial insemination and in vitro fertilization an Orthodox perspective / ». Theological Research Exchange Network (TREN), 1986. http://www.tren.com.

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Kozink, Daniel Michael. « Enhancing Boar Reproductive Performance for Purposes of Artificial Insemination ». Thesis, Virginia Tech, 2002. http://hdl.handle.net/10919/46182.

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The objectives were to: 1) determine if im treatments of Lutalyse expedited the training of sexually inexperienced boars for semen collection and increased spermatozoal output, and 2) determine the effects of dietary L-carnitine supplementation on boar libido, semen quality, sperm production, and maintenance of sperm motility during liquid storage. Experiment 1 utilized lean-type, terminal-line boars (National Pig Development, Roanoke Rapids, NC) (n = 40; 177.4 ± 2.4 d of age and 112.8 ± 2.0 kg body weight) that had not previously experienced natural mating. Boars were individually moved twice weekly for 6 weeks (total of 12 training sessions) to a semen collection room equipped with an artificial sow. Upon entering the semen collection room, boars received in treatments of either deionized water (4 mL, n = 10) or Lutalyse at doses of 5 mg (n = 10), 10 mg (n = 10), or 20 mg (n = 10), and subsequently received a libido score of 1 to 5 (1 = no interest in the artificial sow; 5 = mounting the artificial sow and allowing semen collection). The percentages of boars successfully trained for semen collection during the experimental period were similar (P > 0.05) for controls (20%) and boars receiving 5 mg (30%), 10 mg (20%), or 20 mg (10%) of Lutalyse. Average libido score for boars receiving 10 mg Lutalyse (2.35 ± 0.08) was greater (P < 0.05) than for controls (2.14 ± 0.06). Libido score for the 20 mg treatment group were (1.78 ± 0.06) lower (P < 0.05) compared to the other treatment groups. Characteristics of ejaculates (volume, gel weight, sperm concentration, total spermatozoa) from control boars and boars treated with Lutalyse at doses of 5, 10, or 20 mg were similar (P > 0.05). For Exp. 2, the same group of boars was utilized in two similar trials (Trial 1, 1a, 1b: n = 9 for control and L-carnitine-treated boars; Trial 2, 2a, 2b: n = 10 for control and L-carnitine-treated boars). Boars were fed a fortified, corn and soybean meal-based diet at a rate of 2 kg/d. Boars that were randomly selected for L-carnitine treatment received the same diet mixed with L-carnitine to achieve supplementation of 500 mg/d. For 16 wk, semen was collected weekly via the gloved hand method and was analyzed for gel-free volume, gel weight, sperm concentration, sperm per ejaculate, and characteristics of sperm motility. Time to ejaculation (reaction time), duration of ejaculation, and number of false mounts were also recorded for each collection. Trials 1a and 2a were conducted during weeks 16 and 17 for each respective trial. Boars were collected once on 4 consecutive days, allowed 4 d of rest, and then collected again, to estimate daily spermatozoal production. At the end of 16 wk, a semen sample was also processed and extended in Beltsville Thawing Solution (BTS) to achieve a dilution of 3 x 109 spermatozoa/100 mL-dose for Trials 1b and 2b. The extended semen was stored in plastic bottles at 18°C and motility was evaluated daily for 7 d post collection. L-carnitine supplementation for 16 wk had no effects on semen volume, gel weight, total number of sperm cells per ejaculate, reaction time, or sperm motility (P > 0.1). Boars receiving the L-carnitine-supplemented diet displayed an increase in the number of false mounts before ejaculating and an increase in sperm concentration (P < 0.05) in Trial 2. A treatment by week interaction was detected for sperm concentration in Trial 2 (P < 0.005). Increased sperm concentrations in L-carnitine-treated boars were demonstrated after only one week of feeding the respective diets. Given that the production of a mature sperm cell requires 7 to 8 wk in boars, it is therefore difficult to conclude that differences in sperm concentration were due solely to treatment. Daily spermatozoal production was similar between control boars and boars supplemented with L-carnitine (P > 0.1) for both Trials 1a and 2a. L-carnitine supplementation did not affect percent motility in Trials 1b and 2b or sperm progressive motility in Trial 2b during 7 d storage (P > 0.1). A treatment by day interaction was determined for sperm velocity (P < 0.05) in Trial 2b. L-carnitine supplementation decreased mean sperm velocity significantly after 2 d of storage. Overall, L-carnitine had no beneficial effects on boar libido, semen quality, sperm production, or maintenance of sperm motility during liquid storage. However, Lutalyse increased libido scores, but did not affect the number of boars trained for semen collection or number of spermatozoa ejaculated.
Master of Science
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Wiswedel, Klaus. « Sperm cryopreservation and artificial insemination at Groote Schuur Hospital ». Master's thesis, University of Cape Town, 1987. http://hdl.handle.net/11427/25895.

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The diagnosis and therapy managed by the specialities of infertile couples is traditionally of Gynaecology and Andrology. The latter is a subspeciality, which should combine the knowledge of urologists and gynaecologists in the treatment of sub or infertile men.
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Januskauskas, Aloyzas. « Assessment of viability and function of post-thaw spermatozoa from Swedish dairy AI bulls / ». Uppsala : Swedish Univ. of Agricultural Sciences (Sveriges lantbruksuniv.), 1999. http://epsilon.slu.se/avh/1999/91-576-5435-2.pdf.

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Gil, Laureiro Jorge. « Fertility of frozen ram semen under field conditions : with special reference to influence of extenders and freezing procedures / ». Uppsala : Swedish Univ. of Agricultural Sciences (Sveriges lantbruksuniv.), 2001. http://epsilon.slu.se/avh/2001/91-576-5941-9_1+2.pdf.

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Melo, Leonardo de França e. « Progesterone-based fixed-time artificial insemination protocols for dairy cows ». Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/11/11139/tde-30092016-150847/.

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In the last 50 years, milk production increased in lactating dairy cows. In contrast, reproductive efficiency has dramatically decreased. Several causes may be involved, such as management and environmental factors, physiological and nutritional factors, disease challenges and others. Steroid hormone concentrations in high-producing lactating dairy cows are often at lower levels, due to high dry matter intake and increased liver blood flow and steroid hormones metabolism, which is associated with the compromised estrus expression and reduced oocyte quality, thus decreasing fertility. However, with the largely use of FTAI programs, fertility has turned the corner with current reports of increasing reproductive efficiency. Given the great number and variations on E2/P4-based FTAI protocols, three studies were performed involving different hormonal combinations and are presented in two chapters in this thesis. The first study aimed to compare the ovarian dynamics and fertility using two different treatments at the initiation of a P4-based FTAI protocol, GnRH vs. EB, combined with two different treatments at the end of the protocol, EB vs. ECP. For this study, 1,035 lactating cows were completely randomized into one of four treatments: GnRH-EB, GnRH-ECP, EB-EB, EB-ECP. Interactions and treatments at the end of the protocol did not affect fertility. However, GnRH rather than EB at the beginning tended to increase P/AI and greater proportion of cows regressed the CL when EB was used. The second study aimed to compare plasma P4 concentrations in non-lactating Holstein cows fitted implanted with new (New), or 8-days used intravaginal P4 implants previously autoclaved (Aut) or disinfected (Dis), and containing 1.9 or 1.0 g of P4. Using a 2x3 factorial arrangement of treatments, 24 cows were randomly assigned to two of six treatment groups (two replicates). Mean circulating P4 during 8 days with P4 implant were the following regarding treatments: 1.9 g > 1.0 g; 1.9 g: Aut > New > Dis; 1.0 g: Aut = New > Dis (P < 0.05). The third experiment was performed with 349 cows in two farms and aimed to compare P4 concentrations, ovarian dynamics and fertility during use of 1.9 g Aut or Dis intravaginal P4 implants, in lactating Holstein cows submitted to a 10-day long E2/P4-based FTAI protocol, combined with GnRH treatment at the beginning of the protocol. Slight variations in P4 concentrations were observed between treatments, which did not affect follicular dynamics, synchronization rate or P/AI. However, presence of CL or ovulation at the beginning of the FTAI protocol affected several reproductive variables, such as the time and synchronization of the follicular wave emergence, proportion of cows in estrus at the end of the protocol and size of the ovulatory follicle, and more overall synchronized cows became pregnant to the FTAI protocol.
A produção de leite em bovinos aumentou consideravelmente nos últimos 50 anos. Inversamente, a eficiência reprodutiva vem diminuindo consistentemente. Vários fatores estão envolvidos, tais como manejo e ambiência, fatores fisiológicos e nutricionais, desafios sanitários, entre outros. As concentrações sanguíneas de hormônios esteroides em vacas leiteiras são baixas, devido à elevada ingestão de matéria seca e ao elevado fluxo sanguíneo hepático e metabolismo, os quais estão associados às alterações na expressão do estro e na qualidade de gametas, reduzindo assim a fertilidade. Entretanto, com o largo uso de programas de IATF, a fertilidade vem aumentado bem como a eficiência reprodutiva. Em função da grande quantidade e variações nos protocolos de IATF à base de E2/P4, três estudos foram realizados envolvendo diferentes combinações hormonais, os quais estão apresentados em dois capítulos desta tese. O primeiro estudo objetivou comparar a dinâmica ovariana e a fertilidade com o uso de dois tratamentos hormonais ao início do protocolo à base de P4, GnRH vs. BE, combinados com dois tratamentos no final do protocolo, BE vs. ECP. Para este estudo, 1.035 vacas lactantes foram aleatorizadas em um de quatro tratamentos: GnRH-BE, GnRH-ECP, BE-BE, BE-ECP. Interações e os tratamentos ao final do protocolo não afetaram a fertilidade. No entanto, o GnRH no início do protocolo tendeu a melhorar a P/IA, comparado ao BE, o qual foi responsável por uma grande proporção de vacas regredindo o CL durante o protocolo. O segundo estudo objetivou comparar as concentrações plasmáticas de P4 em vacas holandesas não lactantes entre dispositivos intravaginais de P4 novos (Novo), ou com 8 dias de uso, previamente autoclavados (Aut) ou desinfetados (Des) e contendo 1,9 ou 1,0 g de P4. Em um arranjo fatorial 2x3, aleatorizou-se 24 vacas em dois dos seis tratamentos (duas réplicas). A P4 circulante média nos 8 dias com implante de P4 foi a seguinte em relação aos tratamentos: 1,9 g > 1,0 g; 1,9 g: Aut > Novo > Des; 1,0 g: Aut = Novo > Des (P < 0.05). O terceiro experimento objetivou comparar as concentrações de P4, a dinâmica ovariana e a fertilidade durante o uso de implante Aut ou Des com 1,9 g de P4, em 349 vacas holandesas lactantes submetidas a um protocolo de IATF à base de E2/P4, combinado com GnRH no início do protocolo. Pequenas variações foram verificadas entre os tratamentos nas concentrações de P4, porém sem efeito na dinâmica folicular, na taxa de sincronização e na P/IA. Contudo, a ciclicidade ou a ovulação no início do protocolo influenciaram variáveis reprodutivas, tais como o momento e a sincronização da emergência da onda folicular, a proporção de vacas em cio ao final do protocolo e o tamanho do folículo ovulatório. Além disso, mais vacas sincronizadas ao protocolo ficaram gestantes.
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Dorsey, Benjamin Reese. « Effect of Timing of Insemination and Synchronization of Estrus Method on Artificial Insemination (AI) Pregnancy Rates in Beef Heifers ». Thesis, Virginia Tech, 2005. http://hdl.handle.net/10919/42873.

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Objectives were to evaluate time of insemination relative to estrus and synchronization with melengestrol acetate (MGA) plus prostaglandin (PG) or progesterone insert (CIDR) plus PG on AI pregnancy rate in beef heifers (n = 662) during Fall or Spring. Fall heifers (n = 349) received MGA-PG (MGA for 14 d followed by PG on d 18) or CIDR-PG (CIDR for 7 d, PG administered 1 d before CIDR removal). Estrus was monitored by HeatWatch® (n = 200) or visually (n = 149). Spring heifers (n = 313) underwent CIDR-PG with detection of estrus by HeatWatch®. Heifers not in estrus by 96-100 h after PG were bred AI as non-responsive AI (NRAI). Across seasons, 548 heifers were bred following estrus (EAI). Heifers synchronized during the Fall with MGA received more (P < 0.05) mounts than Fall CIDR heifers (76.8 ± 6.7 and 47.6 ± 7.4, respectively), but duration of estrus was similar. Fall CIDR heifers had greater (P < 0.05) mounting activity and duration of estrus (47.9 ± 5.2 mounts and 15.5 ± 1.1 h) compared to Spring CIDR heifers (34.5 ± 3.1 mounts and 12.7 ± 0.6 h). Heifers grouped in 4 h blocks from 0 to 24 h had no difference (P > 0.05) in pregnancy rates (mean 62.5 %). Treatment had no effect (P > 0.05) on EAI pregnancy rates. Pregnancy rates across seasons for EAI, NRAI and overall was 61.0 %, 26.3 %, and 54.5%. In conclusion, a 24 h window may exist to successfully AI heifers.
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Livres sur le sujet "Artificial insemination"

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Musgrove, Michèle. Artificial insemination : Bibliography. Ottawa : Royal Commission on New Reproductive Technologies, 1992.

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Manafi, Milad. Artificial insemination in farm animals. Rijeka, Croatia : InTech, 2011.

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American Bar Association. Section of Family Law., dir. Artificial insemination and legal reality. [Chicago, Ill.] : American Bar Association, Section of Family Law, 1992.

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Achilles, Rona Grace. Donor insemination : An overview. Ottawa : Royal Commission on New Reproductive Technologies, 1992.

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C, Samper Juan, dir. Equine breeding management and artificial insemination. Philadelphia : Saunders, 2000.

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Richardson, Deborah Y. Artificial insemination : January 1987 - January 1992. Beltsville, Md : National Agricultural Library, 1992.

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Lewis, Browne. Papa's baby : Paternity and artificial insemination. New York : New York University Press, 2012.

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Ontario. Ministry of Agriculture and Food. Artificial insemination (A1) in beef cattle. Toronto, Ont : Ministry of Agriculture and Food, 1993.

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Canada. Royal Commission on New Reproductive Technologies. Artificial insemination : bibliography = : Insémination artificielle : bibliographie. Ottawa, Ont : Royal Commission on New Reproductive Technologies = Commission royale sur les nouvelles techniques de reproduction, 1992.

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Susan, Robinson. Having a baby without a man : The women's guide to alternative insemination. New York : Simon & Schuster, 1985.

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Chapitres de livres sur le sujet "Artificial insemination"

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Steures, Pieternel, Ben W. J. Mol et Fulco van der Veen. « Artificial Insemination : Intrauterine Insemination ». Dans Reproductive Endocrinology and Infertility, 487–96. New York, NY : Springer New York, 2010. http://dx.doi.org/10.1007/978-1-4419-1436-1_31.

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Kasimanickam, Ram. « Artificial Insemination ». Dans Bovine Reproduction, 295–303. Hoboken, NJ, USA : John Wiley & Sons, Inc., 2014. http://dx.doi.org/10.1002/9781118833971.ch32.

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Annas, George J. « Artificial Insemination ». Dans Judging Medicine, 66–71. Totowa, NJ : Humana Press, 1988. http://dx.doi.org/10.1007/978-1-4612-4592-6_8.

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Pinto, Carlos R. F. « Artificial Insemination ». Dans Manual of Clinical Procedures in the Horse, 359–64. Hoboken, NJ, USA : John Wiley & Sons, Inc., 2017. http://dx.doi.org/10.1002/9781118939956.ch37.

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Ax, R. L., M. R. Dally, B. A. Didion, R. W. Lenz, C. C. Love, D. D. Varner, B. Hafez et M. E. Bellin. « Artificial Insemination ». Dans Reproduction in Farm Animals, 376–89. Baltimore, Maryland, USA : Lippincott Williams & Wilkins, 2016. http://dx.doi.org/10.1002/9781119265306.ch26.

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ten Have, Henk, et Maria do Céu Patrão Neves. « Artificial Insemination ». Dans Dictionary of Global Bioethics, 129–30. Cham : Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-54161-3_61.

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Taymor, Melvin L. « Therapeutic Donor Insemination (Artificial Insemination Donor) ». Dans Infertility, 203–10. Boston, MA : Springer US, 1990. http://dx.doi.org/10.1007/978-1-4613-0627-6_24.

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Aronowitz, Bonnie R., et Joseph Feldschuh. « Artificial Insemination by Donor ». Dans Gender in Transition, 151–61. Boston, MA : Springer US, 1989. http://dx.doi.org/10.1007/978-1-4684-5631-8_12.

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Gartley, Cathy. « Surgically Assisted Artificial Insemination ». Dans Small Animal Soft Tissue Surgery, 659–61. Chichester, UK : John Wiley & Sons, Ltd, 2014. http://dx.doi.org/10.1002/9781118997505.ch64.

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Taniguchi-Sugiura, Yuka, et Elly M. Tanaka. « Artificial Insemination in Axolotl ». Dans Methods in Molecular Biology, 417–23. New York, NY : Springer US, 2022. http://dx.doi.org/10.1007/978-1-0716-2659-7_27.

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Actes de conférences sur le sujet "Artificial insemination"

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Sugiyanto, Handoko et Nurulia Hidayah. « Designing and Building Onboard Capture Screen Cattle Artificial Insemination Device ». Dans 3rd International Conference on Community Engagement and Education for Sustainable Development. AIJR Publisher, 2023. http://dx.doi.org/10.21467/proceedings.151.47.

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In Indonesia, the decline of the calf birth rate affects the cattle population. One way to increase the population and birth rate of cattle can be done through artificial insemination. However, using artificial insemination devices does not guarantee the accuracy of the cattle’s heat period. An artificial insemination device integrated with an endoscopic camera combined with photo, video, and temperature capture methods is needed to carry out the stages before and after the placement of sperm semen on the ovaries, namely the heat period and pregnancy detection. The design of this artificial insemination device, known as the IB-G2, is emphasized so that insemination officers are more focused by positioning the screen on board. The IB-G2 was successfully made with a 1.4 GHz processor specification, 1GB memory, 3.5" 320x480 Dots color touch screen LCD, 640x680p camera, and a temperature sensor range -55 to 125 °C. The IB-G2 is expected to contribute to helping inseminators in particular and farmers in general to catalyze the cattle population increase.
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Науменкова, В. А. « Use of method of artificial insemination in Russian studs ». Dans Достижения молодых учёных - зоотехнической науке и практике. Crossref, 2019. http://dx.doi.org/10.25727/rads.hs.2019.1.24281.

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Наиболее широкое применение метода искусственного осеменения в России наблюдается в рысистых породах призового на- правления - около 10 %. В орловской породе за 40 лет метод искус- ственного осеменения использовался в среднем на 4,0 процента. Искусственное осеменение в тракененской и полукровных спортивных породах по конным заводам России на протяжении проанализированных лет (1980-2015) использовалось ограни- ченно, менее одного процента. The method of artificial insemination in Russia is widely used in trotter breeds of prize direction – about 10%. In Orlov Trotter breed during 40 years the method of artificial insemination was used on 4 %. Artificial insemination in Trakehner breed and half-bred sport horses in Russian studs during the years 1880 – 2015 was used limitedly, less than 1%.
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Khanim, Gamar. « ARTIFICIAL INSEMINATION IN THE CONTEXT OF ISLAMIC BIOETHICS ». Dans Proceedings of the XXIII International Scientific and Practical Conference. RS Global Sp. z O.O., 2020. http://dx.doi.org/10.31435/rsglobal_conf/30112020/7272.

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Jun NINOMIYA, Tomoaki INOUE, Ken-ichi KUDHO et Toshiro HIGUCHI. « Development of Artificial Insemination System for Frozen Ovum ». Dans 2007 Minneapolis, Minnesota, June 17-20, 2007. St. Joseph, MI : American Society of Agricultural and Biological Engineers, 2007. http://dx.doi.org/10.13031/2013.22958.

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Yatsentyuk, S. P., S. M. Borunova, L. A. Gnezdilova, S. Yu Pigina, S. V. Pozyabin et P. N. Abramov. « Viral contamination of bull semen used for artificial insemination ». Dans INTERNATIONAL CONFERENCE “SUSTAINABLE DEVELOPMENT : VETERINARY MEDICINE, AGRICULTURE, ENGINEERING AND ECOLOGY” (VMAEE2022). AIP Publishing, 2023. http://dx.doi.org/10.1063/5.0148879.

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Kinishi, Yuya, Tomohiro Maekawa, Shimpei Mizuta, Tomomoto Ishikawa et Yutaka Hata. « Detection of Optimal Puncture Position in OVUM Images for Artificial Insemination ». Dans 2019 International Conference on Machine Learning and Cybernetics (ICMLC). IEEE, 2019. http://dx.doi.org/10.1109/icmlc48188.2019.8949312.

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Yekti, Aulia Puspita Anugra, Enike Dwi Kusumawati, Kuswati Kuswati, Aswah Ridhowi, Herni Sudarwati, Nurul Isnaini et Trinil Susilawati. « Succesfull of Artificial Insemination by Using Chilled Semen on Brahman Cross Cows ». Dans 1st International Conference in One Health (ICOH 2017). Paris, France : Atlantis Press, 2018. http://dx.doi.org/10.2991/icoh-17.2018.43.

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Kusumawati, Enike Dwi, et I. Wayan Karyasa. « A Review and Current Research on Biomaterials Supporting Artificial Insemination Technology Advancement ». Dans International Conference on Improving Tropical Animal Production for Food Security (ITAPS 2021). Paris, France : Atlantis Press, 2022. http://dx.doi.org/10.2991/absr.k.220309.023.

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Misaki, D., et H. Aoyama. « Insect based automatic precise navigation of piezo driven micro robots for artificial insemination ». Dans 2008 IEEE International Conference on Robotics and Biomimetics. IEEE, 2009. http://dx.doi.org/10.1109/robio.2009.4913129.

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Zubova, T. V., V. A. Pleshkov et A. N. Mironov. « Influence of qualitative indicators of spermatozoa on fertility of cows during artificial insemination ». Dans MODERN APPROACHES IN ENGINEERING AND NATURAL SCIENCES : MAENS-2021. AIP Publishing, 2023. http://dx.doi.org/10.1063/5.0116378.

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Rapports d'organisations sur le sujet "Artificial insemination"

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Fitzgerald, Robert F., Gordon F. Jones et Kenneth J. Stalder. A Comparison of Intrauterine and Cervical Artificial Insemination Catheters on Farrowing Rate and Litter Size in Artificially Mated Sows. Ames (Iowa) : Iowa State University, janvier 2007. http://dx.doi.org/10.31274/ans_air-180814-676.

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Sommer, Morgan M., et Curtis R. Youngs. Impact of Embryo Transfer Technology on the Production of Artificial Insemination Sires for the U.S. Dairy Cattle Industry. Ames (Iowa) : Iowa State University, janvier 2016. http://dx.doi.org/10.31274/ans_air-180814-202.

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