Bibliografías temáticas / Artificial insemination

Literatura académica sobre el tema "Artificial insemination"

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Publicado: 4 de junio de 2021

Última modificación: 10 de marzo de 2023

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Artículos de revistas sobre el tema "Artificial insemination":

Fennessy, P. F., C. G. Mackintosh y G. H. Shackell. "Artificial insemination of farmed red deer (Cervus elaphus)". Animal Science 51, n.º 3 (diciembre de 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.

James, David N. "Artificial Insemination". Philosophy and Theology 2, n.º 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, n.º 3 (15 de diciembre de 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, n.º 1 Frontiers in (junio de 1991): 399–413. http://dx.doi.org/10.1111/j.1749-6632.1991.tb37932.x.

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Senatore, E. M., S. Verberckmoes, M. Pascale y G. A. Presicce. "21DEEP UTERO-TUBAL SEMEN DEPOSITION IN MEDITERRANEAN ITALIAN BUFFALOES USING A NEW ARTIFICIAL INSEMINATION DEVICE". Reproduction, Fertility and Development 16, n.º 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.

Cox, John. "Equine Artificial Insemination". Veterinary Journal 164, n.º 2 (septiembre de 2002): 162–63. http://dx.doi.org/10.1053/tvjl.2001.0644.

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Yates, Daniel J. y Michael D. Whitacre. "Equine Artificial Insemination". Veterinary Clinics of North America: Equine Practice 4, n.º 2 (agosto de 1988): 291–304. http://dx.doi.org/10.1016/s0749-0739(17)30642-9.

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Waddy, S. L. y D. E. Aiken. "Fertilization and Egg Retention in Artificially Inseminated Female American Lobsters, Homarus americanus". Canadian Journal of Fisheries and Aquatic Sciences 42, n.º 12 (1 de diciembre de 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.

Thangavelu, G., M. Gobikrushanth, M. G. Colazo y D. J. Ambrose. "Pregnancy per artificial insemination and pregnancy loss in lactating dairy cows of a single herd following timed artificial insemination or insemination at detected estrus". Canadian Journal of Animal Science 95, n.º 3 (septiembre de 2015): 383–88. http://dx.doi.org/10.4141/cjas-2014-122.

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Thangavelu, G., Gobikrushanth, M., Colazo, M. G. and Ambrose, D. J. 2015. Pregnancy per artificial insemination and pregnancy loss in lactating dairy cows of a single herd following timed artificial insemination or insemination at detected estrus. Can. J. Anim. Sci. 95: 383–388. The objective of this retrospective study was to determine the factors affecting pregnancy per artificial insemination (P/AI) and pregnancy loss in lactating dairy cattle. Breeding records (n=1466) for 5 consecutive years were evaluated from one dairy herd. The effects of type of breeding [timed artificial insemination (TAI; n=1246) vs. insemination at detected estrus (IDE; n=220)], parity (primiparous vs. multiparous), body condition score (BCS; low ≤2.5 vs. high >2.5), year, season (summer vs. other seasons) and fertility group (high fertile <3 vs. low fertile ≥3 inseminations), on P/AI and pregnancy loss (i.e., late embryonic/early fetal loss, abortion and stillbirth) were determined using the GLIMMIX procedures of SAS software. Pregnancy per AI was influenced by type of breeding and season. Pregnancy per AI was lower (P<0.05) in cows that were TAI (28.7%) than IDE (37.1%) and during summer (30.3%) than other seasons of the year (35.5%). Pregnancy loss was higher (P<0.05) in low BCS (9.1%) than in high BCS (1.9%) cows. However, parity, year, and fertility group affected neither P/AI nor pregnancy loss.

Novita, Cut Intan, Mohd Agus Nashri Abdullah, Eka Meutia Sari y Zulfian Zulfian. "Evaluasi Program Inseminasi Buatan pada Sapi Lokal Betina di Kecamatan Juli, Kabupaten Bireuen, Provinsi Aceh". Jurnal Agripet 19, n.º 1 (1 de abril de 2019): 31–39. http://dx.doi.org/10.17969/agripet.v19i1.13005.

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ABSTRAK. Penelitian ini bertujuan untuk mengetahui keberhasilan program inseminasi buatan pada sapi lokal betina. Penelitian ini dilakukan di Kecamatan Juli, Kabupaten Bireuen, Provinsi Aceh, yaitu Desa Keude Dua, Bunyot, Blang Ketumba, Paya Cut dan Desa Batee Raya. Metode survei digunakan dalam penelitian ini. Responden yang digunakan adalah peternak sapi lokal dan inseminator. Responden ditetapkan dengan menggunakan metode purposive sampling. Sebagai responden ditetapkan 40 peternak dan 4 inseminator. Peternak responden harus memenuhi kriteria memelihara minimal dua ekor sapi lokal yang telah beranak 2 (dua) kali dan sistem perkawinan dilakukan secara inseminasi buatan (IB). Inseminator telah memiliki Surat Izin melakukan Inseminasi Buatan (SIMI). Hasil penelitian menunjukkan bahwa pelaksanaan program inseminasi buatan di Kecamatan Juli telah berjalan dengan baik, dimana rataan nilai conception rate (CR) sebesar 88,05%, service per conception (S/C) adalah 1,2, jarak beranak (calving interval) sebesar 12,36 bulan, dan calving rate sebesar 84,23%. (Evaluation of artificial insemination programs in local cows in Juli district, Bireuen, Aceh Province) ABSTRACT. This study aimed to determine the success of the artificial insemination program in local female cattle. This research was carried out in Juli District, Bireuen , Aceh Province, namely the villages of Keude Dua, Bunyot, Blang Ketumba, Paya Cut and Batee Raya villages. The survey method was used in this study. Respondents were determined by purposive sampling method. Respondents used were local cattle breeders and inseminators. The respondents involved ware 40 breeders and 4 inseminators. Breeders must maintaining minimal two female local cows that have given birth 2 (two) times with artificial insemination as mate system. The Inseminator involved is the one who has Artificial Insemination License. The results showed that the implementation of the artificial insemination program in the District of Juli has gone well, where the average value of the conception rate (CR) is 88.05%, service per conception (S/C) is 1.2, calving interval equal to 12.36 months and calving rate is 84.23%.

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Tesis sobre el tema "Artificial insemination":

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.

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.

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 Â± 2.4 d of age and 112.8 Â± 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 Â± 0.08) was greater (P < 0.05) than for controls (2.14 Â± 0.06). Libido score for the 20 mg treatment group were (1.78 Â± 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 18Â°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

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.

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.

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 Â± 3.1 mounts and 12.7 Â± 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.
Master of Science

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Libros sobre el tema "Artificial insemination":

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

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Mina C. G. Davies Morel. Equine artificial insemination. Wallingford, Oxon, UK: CABI Pub., 1999.

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New South Wales. Law Reform Commission. Artificial conception: Report 1 : Human artificial insemination. [Sydney, N.S.W: The Commission], 1986.

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

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

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

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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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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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Capítulos de libros sobre el tema "Artificial insemination":

Steures, Pieternel, Ben W. J. Mol y Fulco van der Veen. "Artificial Insemination: Intrauterine Insemination". En 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". En 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". En 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". En 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 y M. E. Bellin. "Artificial Insemination". En 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 y Maria do Céu Patrão Neves. "Artificial Insemination". En 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)". En 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. y Joseph Feldschuh. "Artificial Insemination by Donor". En 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". En 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 y Elly M. Tanaka. "Artificial Insemination in Axolotl". En 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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Actas de conferencias sobre el tema "Artificial insemination":

Khanim, Gamar. "ARTIFICIAL INSEMINATION IN THE CONTEXT OF ISLAMIC BIOETHICS". En 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 y Toshiro HIGUCHI. "Development of Artificial Insemination System for Frozen Ovum". En 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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Kinishi, Yuya, Tomohiro Maekawa, Shimpei Mizuta, Tomomoto Ishikawa y Yutaka Hata. "Detection of Optimal Puncture Position in OVUM Images for Artificial Insemination". En 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 y Trinil Susilawati. "Succesfull of Artificial Insemination by Using Chilled Semen on Brahman Cross Cows". En 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 y I. Wayan Karyasa. "A Review and Current Research on Biomaterials Supporting Artificial Insemination Technology Advancement". En 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. y H. Aoyama. "Insect based automatic precise navigation of piezo driven micro robots for artificial insemination". En 2008 IEEE International Conference on Robotics and Biomimetics. IEEE, 2009. http://dx.doi.org/10.1109/robio.2009.4913129.

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Romadhonny, Randy Anwar, Agustinus Bimo Gumelar, Tresna Maulana Fahrudin, Wahyu Putra Adi Setiawan, Febri Dwi Cahaya Putra, Rizky Davit Nugroho y Jauhara Rana Budiani. "Estrous Cycle Prediction of Dairy Cows for Planned Artificial Insemination (AI) Using Multiple Logistic Regression". En 2019 International Seminar on Application for Technology of Information and Communication (iSemantic). IEEE, 2019. http://dx.doi.org/10.1109/isemantic.2019.8884272.

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Matsumoto, Atsushi, Chikara Kubota y Hayato Ohwada. "Extracting Rules for Successful Conditions for Artificial Insemination in Dairy Cattle Using Inductive Logic Programming". En ICMLC 2017: 2017 the 9th International Conference on Machine Learning and Computing. New York, NY, USA: ACM, 2017. http://dx.doi.org/10.1145/3055635.3056607.

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Suteky, Tatik y Dwatmadji. "Factors Affecting Adoption of Beef Cattle Artificial Insemination (AI) in Smallholder Farmer in Bengkulu Province, Indonesia". En International Seminar on Promoting Local Resources for Sustainable Agriculture and Development (ISPLRSAD 2020). Paris, France: Atlantis Press, 2021. http://dx.doi.org/10.2991/absr.k.210609.032.

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Cardoso, Alexandre, Edgard Afonso Lamounier Junior y Andre de Mattos Faro. "The Use of Virtual Reality for Simulation and Training of Bovine Artificial Insemination with Haptic Devices". En 2012 14th Symposium on Virtual and Augmented Reality (SVR). IEEE, 2012. http://dx.doi.org/10.1109/svr.2012.23.

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Informes sobre el tema "Artificial insemination":

Fitzgerald, Robert F., Gordon F. Jones y 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, enero de 2007. http://dx.doi.org/10.31274/ans_air-180814-676.

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Sommer, Morgan M. y 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, enero de 2016. http://dx.doi.org/10.31274/ans_air-180814-202.

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