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| Registros recuperados: 22 | |
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| SILVA, J. C. B.; SILVA, M. R.; MASSONETO, J. F. M.; LORO, P. S.; ALVES, I. A. C.; NOGUEIRA, E.; OLIVEIRA, L. O. F. de; ABREU, U. G. P. de; MARINHO, D. B.. |
| Physiology of reproduction in male and semen technology. Abstracts 34th Annual Meeting of the Brazilian Embryo Technology Society (SBTE), 13 a 15 de agosto de 2020. |
| Tipo: Artigo de periódico |
Palavras-chave: Inseminação Artificial; Esperma; Prenhez; Sêmen; Artificial insemination; Pregnancy rate; Sperm capacitation. |
| Ano: 2020 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1126486 |
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| Talini,R.; Kozicki,L.E.; Gaievski,F.R.; Polo,G.; Lima,L.G.F.; Santiago,J.; Segui,M.S.; Weiss,R.R.; Galan,T.G.B.. |
| ABSTRACT The objective of the study was to determine whether or not there is a correlation between thermoresistance tests (TT) after semen thawing and pregnancy rate (PR) after fixed-time artificial insemination (FTAI). Four different TT were performed on ten samples used for AI; a rapid test (RTT) (30min / 46°C) and three slow tests (STT): STT1 (60min/38°C), STT2 (180min/38°C), and STT3 (300min/38°C). Two hundred and fifteen multiparous crossbred cows were submitted to FTAI under the following protocol: on day zero (d0) the animals received a P4 device +EB; on d7 PGF2α; on d8 P4 was removed and eCG+EC were administered; IATF was performed on d10. Three gestational diagnoses (G D) were performed on d40, d70 and d120. The mean sperm motility (%) in RTT and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Sperm motility; Casa; Pregnancy rate; Beef cows; Semen thermoresistance test. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352019000602085 |
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| Reinher,Cristiane; Barcellos,Júlio Otávio Jardim; Peripolli,Vanessa; Prates,Ênio Rosa; Canozzi,Maria Eugênia Andrighetto. |
| It was evaluated in this work the effect of calving sub-season on the pregnancy rate of 7,726 multiparous Hereford beef cows grazing on natural pastures in southern Brazil, from 1994 to 2007. Calving sub-season periods were divided in 20-day intervals from August 12th to 31st; from September 1st to 20th; from September 21st to October 10th; from October 11th to 31st; from November 1st to 20th. Calving in each sub-season and pregnancy rate (PR) were analyzed by the Chi-square test. Overall means of each sub-season were 92.7% (from August 12th to 31st), 90.6% (from September 1st to 20th), 82.1% (from September 21st to October 10th), 77.7% (from October 11th to 31st), and 70.6% (from November 1st to 20th). Calving sub-season significantly influenced pregnancy... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Calving date; Cow-calf; Multiparous; Pregnancy rate. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982010001000012 |
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| FONSECA, J. F. da; TORRES, C. A. A.; MAFFILI, V. V.; BORGES, A. M.; ESPESCHIT, C. J. B.; BALBINOT, P. de Z.; OLIVEIRA, R. F. M.; LEITE, P. A. G.. |
| Objetivou-se com este estudo avaliar o efeito da administração de hCG sobre o desempenho reprodutivo de cabras Alpinas i durante a estação de acasalamento natural. Trinta e duas fêmeas nulíparas e 124lactantes, após a identificação de estro e acasalamento, foram aleatoriamente divididas, de acordo com a categoria, em dois tratamentos. Em TI (n=75) e T2 (n=81), os animais receberam I roL de solução salina ou 250 UI de hCG, respectivamente, por via intramuscular cinco dias após o acasalamento. A gestação foi verificada por ultra-sonografia transabdominal (probe de 3,5 MHz) nos dias 35 e 70 após o acasalamento, para detecção e confirmação da gestação, respectivamente. As taxas de gestação não diferiram entre TI (86,7%) e T2 (70,6%) para nulíparas e TI (78,3... |
| Tipo: Artigo de periódico |
Palavras-chave: Raça Alpina; Desempenho reprodutivo; HCG; Dairy goat.; Acasalamento; Caprino; Eficiência Reprodutiva; Reprodução Animal.; Reproductive performance; Corpus luteum; Progesterone; Pregnancy rate; Estrous cycle.. |
| Ano: 2005 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/531515 |
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| Silva,Maurício Dallmann da; Lobato,José Fernando Piva; Vaz,Ricardo Zambarda; Eloy,Lidiane Raquel; Vaz,Márcia Bitencourt. |
| ABSTRACT Body development and reproductive performance of a hundred forty-two 14 to 15-month-old heifers, classified at weaning according to frame size as small, medium, and large, were evaluated. The parameters evaluated were: body weight, hip height, body condition score, weight gain, ovarian activity, and pregnancy rate. At weaning, body weight and hip height were significantly different among frame scores, (small – 133.0 kg, 92.2 cm; medium – 158.5 kg, 96.6 cm; and large – 185.2 kg; 100.2 cm). After weaning, heifers grazed together on natural pastures during the autumn and on ryegrass (Lolium multiflorum La.) during the winter and spring. Frame score differences remained until the beginning of the breeding season (BS), starting on average at 14 months... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Age at conception; Average daily gain; Body condition score; Hip height; Ovarian activity; Pregnancy rate. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982018000100400 |
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| TOMAZI FILHO, J.; PFEIFER, L. F. M.; HOEFLE, C. A.; RODRIGUES, M. F.; FERREIRA, R.. |
| The objectives of this study were to determine the effect of calving to timed artificial insemination (C-TAI) interval on fertility of Bos taurus and Bos indicus cows and to determine the best C-TAI interval to include postpartum cows in TAI programs in each genotype (B. taurus and B. indicus). In experiment 1, a retrospective study was per-formed, with data from 2,709 TAI in Bos taurus and Bos indicus cows with different C- TAI intervals. There was a positive linear effect of C-TAI interval on the pregnancy probability (p< .0001). However, there was no effect or interaction with the geno-type. When C-TAI intervals were grouped in classes, pregnancy rate differed in groups (p< .05). Receiver operating characteristic (ROC) analysis was performed, and... |
| Tipo: Artigo de periódico |
Palavras-chave: Endometrial cytology; Pregnancy rate; Reproductive efficiency. |
| Ano: 2022 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1152396 |
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| FIGUEIRA, L. M.; ALVES, N. G.; LUCAS, F. A.; SOUZA-FABJAN, J. M. G.; BATISTA, R. I. T. P.; ARRAIS, A. M.; VERGANI, G. B.; PRATES, J. F.; FONSECA, J. F. da. |
| Abstract: The Doppler ultrasonography allows the characterization of blood flow and estimation of the functionality of reproductive organs. Therefore, it shows a great potential for use in multiple ovulation and embryo transfer (MOET) programs in ruminants. This study aimed to assess the effect of luteal blood flow and number of corpora lutea (CL) at the moment of embryo transfer to recipient on the establishment of pregnancy in sheep. In conclusion, both the subjective luteal blood flow and the number of CL did not influence the pregnancy rate in recipients of the Lacaune breed. [Efeito do fluxo sanguíneo luteal e número de corpos lúteos na taxa de gestação após transferência em tempo fixo de embriões criopreservados em receptoras Lacaune avaliadas por... |
| Tipo: Anais e Proceedings de eventos |
Palavras-chave: MOET; Biotechnology of reproduction; Biotecnologia da reprodução; MOTE; Taxa de prenhez; Ovino; Ovelha; Biotecnologia; Reprodução Animal; Corpo Lúteo; Transferência de Embrião; Sheep; Ewes; Small ruminants; Embryo transfer; Corpus luteum; Pregnancy rate. |
| Ano: 2019 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1112227 |
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| FONSECA, J. F. da; CASTRO, A. C. R.; ARASHIRO, E. K. N.; OLIVEIRA, M. E. F.; ZAMBRINI, F. N.; ESTEVES, L. V.; BRANDÃO, F. Z.; SOUZA-FABJAN, J. M. G.. |
| Abstract: The effect of hCG administration on accessory corpus luteum (ACL) formation, CL area, and plasma progesterone (P4) concentration (ng/mL) seven days after breeding was studied in nulliparous Santa Inês sheep. Intravaginal 60 mg MAP sponges were inserted into ewes for six days and 300 IU eCG i.m. and 30 ?g d-cloprostenol latero-vulvar were administered 24 h before sponge removal. Ewes were naturally bred and, seven days after first mating (Day 0; D0), were treated with either 250 IU hCG (hCG group; n = 7) or 1 mL saline solution (control group; n = 7). Blood was collected to determine plasma P4 concentrations and sonograms were performed on Days 7, 10, 13, 16, 19, and 22. Number of CL on D7 was similar (P > 0.05) between hCG (1.3 ± 0.5) and... |
| Tipo: Artigo de periódico |
Palavras-chave: Ultrasound; CL; Luteotropic effect; Ovulation induction; Taxa de concepção; Ovino; Corpo Lúteo; Progesterona; Ovulação; Ciclo Estral; Ultrassom; Reprodução Animal; Prenhez; Sheep; Corpus luteum; Progesterone; Brazil; Estrous cycle; Animal reproduction; Ewes; Conception rate; Pregnancy rate. |
| Ano: 2018 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1093405 |
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| Sepúlveda,Soledad J; Portella,Jimmy R; Noriega,Luis P; Escudero,Ernesto L; Noriega,Luis H. |
| The aim of this study was to review the experience and outcomes of assisted reproduction cycles with embryos grown up to day 5 of development, comparing different parameters according to the ages of the patients. We retrospectively studied 1,874 assisted reproduction cycles where embryo culture was extended up to the fifth or sixth day of development. All IVF and ICSI cycles were included, comparing, according to patient age, the following rates: blastocyst formation, pregnancy, implantation and abortion. As control, we analyzed cycles with donated oocytes from young donors (OD). The number of embryos reaching the blastocyst stage is similar in all groups of patients. Only the OD group was different in terms of blastocyst formation, pregnancy and... |
| Tipo: Journal article |
Palavras-chave: Blastocyst; Long-term culture; Pregnancy rate; Implantation rate. |
| Ano: 2011 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602011000200012 |
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| ABREU, U. G. P. de; ROSA, A. do N.; SILVA, J. C. B.; NOGUEIRA, E.; PORTES, J. V.; OLIVEIRA, L. O. F. de; BATISTA, D. S. do N.. |
| Abstract: High reproductive efficiency is essential to guarantee sustainable livestock production and a satisfactory economic return for the meat producer. Reproductive biotechnologies and animal breeding play an important role in the livestock economy. These two factors have a long- established relationship between reproductive performance and profitability; consequently, improving reproductive and genetic efficiency will increase profitability. In Brazil, the beef livestock farming is practiced in all states and ecosystems in the country. Regardless of the production system, it is characterized by the predominance of the use of pastures. So beef cattle production systems are very different, with variable results. Advances in reproductive biotechnologies... |
| Tipo: Anais e Proceedings de eventos |
Palavras-chave: Reprodução Animal; Prenhez; Pregnancy rate; Animal breeding. |
| Ano: 2021 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1131512 |
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| DIAS, J. H.; CORTÊS, L. R.; BRANDÃO, F. Z.; BONATO, G. C.; SOUZA-FABJAN, J. M. G.; ARRAIS, A. M.; OLIVEIRA, T. A.; MARTINS, B. B.; FACO, O.; FONSECA, J. F. da. |
| Pregnancy establishing after artificial insemination (AI) in goats depends on many important aspects, including time of AI, ovulation and premature luteal regression. The knowledge of ovulation in relation to estrus onset, ovulation induction and strategies to prevent PLR can be valuable tools to increase pregnancy rate. This study tested the effect of hCG administration on pregnancy rate in artificially inseminated dairy cyclic goats after estrus synchronization Results of this study showed that hCG administration associated to AI significantly increased pregnancy rates in goats after estrus synchronization with dcloprostenol, which can be a valuable and promising tool to be applied in field conditions. |
| Tipo: Anais e Proceedings de eventos |
Palavras-chave: HCG; Dairy goats; Animal reproduction; Ovulation; Estrus; Artificial insemination; Pregnancy rate; Estrus synchronization; Cloprostenol. |
| Ano: 2018 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1095120 |
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| MAIA, A. L. R. S.; BRANDÃO, F.; BALARO, M. F. A.; SANTOS, G. V.; SOUZA-FABJAN, M. J. G.; FACO, O.; FONSECA, J. F. da. |
| Abstract: The hydrometra is an important cause of infertility in dairy goats. By the use of ultrasound (US), diagnosis of hydrometra became more evident and it was possible to detect the relatively high occurrence of concomitant follicular cysts. Thus, the aim of this study was to evaluate uterine drainage and fertility rate after the use of d-cloprostenol treatment associated or not to GnRH. The study was performed during the breeding season of 2015 in Minas Gerais, Brazil. again. The use of three doses of d-cloprostenol 10 days apart was efficient for draining the contents of the uterus resulting in a relative good pregnancy rate whilst GnRH promoted no extra benefits. |
| Tipo: Anais e Proceedings de eventos |
Palavras-chave: Hidrometra; Doença uterina; Taxa de fertilidade; Diagnóstico de prenhez; GnRH; Hydrometra; Caprino; Reprodução animal; Útero; Doença animal; Goats; Uterine diseases; Pregnancy diagnosis; Pregnancy rate. |
| Ano: 2016 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1063223 |
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| LOBATO, J. F. P.; DERESZ, F.; LEBOUTE, E. M.; PEREIRA NETO, O. A.. |
| O desempenho reprodutivo de 122 vacas Devon primíparas foi avaliado nos seguintes tratamentos: T1: 33 vacas mantidas em campo natural (Axonopus sp; P. notatum Flugge); T2: 30 vacas em campo natural, suplementadas, em média, por 82 e 31 dias, respectivamente, no pré e pós-parto com 1 kg de feno (L. multiflorum L.; T. repens; T. subterraneum e campo natural) e 1,74 kg de farelo de arroz e 0,24 kg de farelo de soja vaca/dia; T3: 29 vacas mantidas em pastagem natural melhorada com as mesmas espécies forrageiras do feno do T2, por, em média, 73 dias e 40 dias no pré e pós-parto, respectivamente; T4: 30 vacas na mesma pastagem natural melhorada do T3 utilizada em média por 89 dias pré e 52 dias pós-parto. Durante o experimento manteve-se a lotação de uma vaca/ha... |
| Tipo: Artigo de periódico |
Palavras-chave: Pastagens melhoradas; Pre-parto; Suplementacao alimentar; Taxa de concepcao; Vacas primiparas; Improved pasture; Pre-calving; Post-calving; Supplementary feeding; Primiparous cows; Pós-Parto; Pregnancy rate. |
| Ano: 1998 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/592914 |
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| Faria,D.P.; Costa,M. D. da; Raidan,F. S. S.; Ruas,J. R. M.; Júnior,V. R. R.; Toral,F. L. B.; Aspiazú,I.. |
| This study aimed to evaluate the influence of initial weight, initial age, average daily gain in initial weight, average daily gain in total weight and genetic group on the probability of pregnancy in primiparous females of the Nellore, 1/2 Simmental + 1/2 Nellore, and 3/4 Nellore + 1/4 Simmental genetic groups. Data were collected from the livestock file of the Farpal Farm, located in the municipality of Jaíba, Minas Gerais State, Brazil. The pregnancy diagnosis results (success = 1 and failure = 0) were used to determine the probability of pregnancy that was modeled using logistic regression by the Proc Logistic procedure available on SAS (Statistical..., 2004) software, from the regressor variables initial weight, average daily gain in initial weight,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Average daily gain; Beef cattle; Breeding season; Pregnancy rate. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352014000601795 |
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| Runami,Iori; Gunji,Yousuke; Hishinuma,Mitsugu; Nagano,Masashi; Takada,Tatsuyuki; Higaki,Shogo. |
| We describe the reproductive biology of the coypu, Myocastor coypus (Molina, 1782), in western Japan, as an attempt to contribute to an efficient population control program of the coypu population. A total of 212 specimens (113 males and 99 females) were collected in the Tottori prefecture from February 2010 to January 2012. From the age estimation based on body weight and molar eruption pattern, we determined that both males and females reach sexual maturity at 4-6 months of age. Of the 72 mature females examined, 60 (83.3%) were pregnant, with a mean litter size of 6.5 ± 2.4 (mean ± SE). The onset of sexual maturity in the western Japanese population was relatively earlier when compared with indigenous and other introduced populations. Furthermore, the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Litter size; Pregnancy rate; Sexual maturity. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702013000200002 |
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| SCHILLINGS NETO, E.; NOGUEIRA, E.; JARDIM, R.; ABREU, U. G. P. de; STERZA, F. A. de M.; PELLEGRIN, A. O.; JULIANO, R. S.. |
| Abstract: This study evaluated the reproductive performance of Nellore heifers without previous vaccination undergoing fixed-time artificial insemination (FTAI) and subsequent natural breeding under different vaccination protocols against infectious bovine herpesvirus 1(BHV-1), bovine viral diarrhea virus (BVDV), and bovine leptospirosis (BL). A total of 763 animals were included; the group assignment was as follows: T1, control without vaccination; T2, vaccination against BL; T3, vaccination against BHV-1and BVDV; T4,vaccination against combination of BL + BHV-1and BVDV. Vaccination was started 30 days before FTAI (D-40), and a booster dose was administered at D-10. Serological tests were used to verify the occurrence rate of natural infection by BL,... |
| Tipo: Artigo de periódico |
Palavras-chave: Doenças virais; Taxa de prenhez; Viral diseases; Gado de Corte; Imunização; Leptospirose; Beef cattle; Immunization; Leptospirosis; Pregnancy rate. |
| Ano: 2019 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1114167 |
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| Registros recuperados: 22 | |
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