SABIIA - Sistema Aberto e Integrado de Informação em Agricultura (Sabiia)

MACHADO, V. de O.; LEAL, F. S. C.; BONATO, G. C.; DIAS, J. H.; ARRAIS, A. M.; MAIA, A. L. R. e S.; CÔRTES, L. R.; SOUZA-FABJAN, J. M. G.; FONSECA, J. F. da.

Resumo: A produção e produtividade dos rebanhos de caprinos leiteiros do Brasil figuram entre as maiores do mundo (Lôbo, et al. 2017. Small Rumin Res, 153:9?16). Neste cenário torna-se evidente o interesse por alternativas que tragam melhorias na criação e na eficiência e emprego de biotecnologias da reprodução. A inseminação artificial (IA) é uma das mais empregadas neste contexto, mas seu sucesso é dependente de vários fatores, dentre eles do adequado nível plasmático de progesterona (P4), sendo a gestação da cabra dependente da P4 produzida pelo corpo lúteo (CL) durante toda a gestação. Em situações em que a P4 não atinja níveis adequados, a gestação não se estabelece ou se mantém. Pode-se incrementar a P4 de forma exógena e endógena, mas a primeira...

Beef Reproductive Technology Adoption- Impact of Production Risk and Capitals

Palavras-chave: Biotecnologia da reprodução; Caprino; Cabra Leiteira; Reprodução Animal; Sincronização do Cio; Dairy goats; Animal reproduction; Human chorionic gonadotropin; Estrus synchronization; Artificial insemination; Biotechnology.

Ano: 2019

URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1112247

AgEcon

Rees, Lisa; Parcell, Joseph L.; Patterson, David J.; Smith, Michael F.; Poock, Scott.

Tipo: Conference Paper or Presentation

Palavras-chave: Agriculture; Beef; Artificial insemination; Estrus synchronization; Social capital; Production risk; Technology adoption; Farm Management.

Ano: 2010

URL: http://purl.umn.edu/56492

Economic optimization of the number of recipients in bovine embryo transfer programs

Scientia Agricola

Beltrame,Renato Travassos; Barioni,Luis Gustavo; Maestri,Breno Dala; Quirino,Celia Raquel.

Purchase and maintenance of recipient females account for a large proportion of the costs and determine the number of calves that can be produced in an embryo transfer program. However, the large variability of embryo production by the donors and the need to purchase and synchronize the recipients before knowing the number of embryos collected make it difficult for the decision maker to identify the ideal number of recipient females to allocate. An ex-ante evaluation to determine the optimal number of recipient females was carried out through a sensitivity analysis for the ratio between the number of recipients and donors in a simulation model. The variability for the number of embryos collected was accounted for by applying the Monte Carlo simulation...

Effects of estradiol valerate or PGF2a on estrus response of goats treated with norgestomet implants.

Palavras-chave: Monte Carlo; Mathematical model; Simulation; Cost estimation; Estrus synchronization.

Ano: 2007

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162007000300002

MACHADO, R.; AZEVEDO, H. C.; SALLES, H. O.; SOARES, A. T..

bitstream/item/193199/1/CNPC-1996-Effects.pdf

Effects of two d-cloprostenol administrations given at different intervals on estrus and ovulation in cyclic dairy goats.

Palavras-chave: Oestrous cycle; Caprino; Cabra; Hormônio; Estradiol; Ciclo estral; Prostaglandina; Goats; Hormones; Prostaglandins; Estrus synchronization.

Ano: 1996

URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/914185

BONATO, G. C.; CÔRTES, L. R.; ARRAIS, A. M.; FIGUEIRA, L. M.; OLIVEIRA, T. de A.; MACHADO, V. de O.; MAIA, A. L. R. e S.; SOUZA-FABJAN, J. M. G.; FONSECA, J. F. da.

Abstract: Goats are seasonal breeders depending on breed and latitude. Among the hormonal methods used in controlled reproduction programs, there are those that mimic the activity of the corpus luteum and those that inhibit it. Prostaglandin (PGF2?) fits the latter, with the advantage of having a better cost-benefit, since it is cheaper and more natural method, as it has fewer side effects than progestin devices. In addition, the literature is incipient regarding follicular and ovulatory data in goats subjected to PGF2? or its analogues. This study aimed to check in dairy goats the efficiency of estrus synchronization treatment using two doses of d-cloprostenol administered in different intervals, during the natural breeding season. The results quoted...

Estrus behavior in Guzera (Bos taurus indicus) breed cows

Palavras-chave: Caprino; Cabra Leiteira; Reprodução Animal; Ovulação; Prostaglandina; Sincronização do Cio; Ciclo Estral; Dairy goats; Ovulation; Prostaglandins; Estrus synchronization; Animal reproduction.

Ano: 2019

URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1112241

Ciência e Agrotecnologia

Alves,Nadja Gomes; Pires,Maria de Fátima Ávila; Silva Filho,José Monteiro da; Saturnino,Helton Mattana; Sá,Wanderlei Ferreira de; Torres,Ciro Alexandre Alves.

The estrus behavior was evaluated during an induced and natural subsequent estrus in twelve Guzera breed cows, in the winter and summer seasons in two consecutive years. The proportion of cows that responded to estrus synchronization was 84.8%. The effect of the interaction season x year of experiment on estrous cycle length was observed. Pro-estrus was longer in the summer (57.69±4.72h) and in the natural estrus (74.23±4.41h) than in the winter (38.95±4.02h) and in the induced estrus (22.40±4.36h). Estrus length was similar in the winter (11.48±0.70h) and in the summer seasons (13.40±0.82h) as well as among cows with induced (12.47±0.75h) and natural estrus (12.41±0.76h). The number of mounts accepted during estrus and the number of mounts accepted/ hour...

Estrus presentation and distribution in ewes treated with intravaginal sponges impregnated with medroxyprogesterone acetate (MAP) in combination with pregnant mare serum gonadotropin (PMSG)

Palavras-chave: Estrus synchronization; Season of the year; Zebu.

Ano: 2009

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542009000500032

Braz. J. Vet. Res. Anim. Sci.

SIMONETTI,Laura; RAMOS,Guillermo; GARDÓN,Juan Carlos.

The objectives of this study were: 1) to determine estrus presentation and distribution following a conventional method of estrus synchronization (progestagen-PMSG treatment) in an ewe herd and 2) to analyze estrus presentation and distribution in adult ewes and ewe lambs. During spring a total of 300 cyclic Merino ewes, including 231 adult ewes and 69 ewe lambs were treated with intravaginal sponges impregnated with 60 mg medroxyprogesterone acetate (MAP). After 14 days sponges were removed and 375 IU pregnant mare serum gonadotropin (PMSG) were administered i.m. Estrus detection was performed with vasectomized rams. Ewes were inspected for the presence of marks at 4-hours intervals. Sponge losses, estrus synchronization and distribution were analyzed for...

Indução e sincronização do estro por programa de luz e d-cloprostenol em cabras leiteiras na contra-estação reprodutiva.

Palavras-chave: Ewes; Estrus synchronization; Medroxyprogesterone acetate; PMSG; Sponges.

Ano: 1999

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-95961999000500002

MONTEIRO NETTO, M.; BALARO, M. F. A.; ESPÍRITO SANTO, C. G. do; COSENTINO, I. O.; BRANDÃO, F. Z.; FONSECA, J. F. da.

Resumo: Em latitudes elevadas, a indução do estro fora da estação de acasalamento natural é imprescindível para a produção de leite caprino ao longo do ano. O estro pode ser induzido de forma sincronizada com coquetel hormonal ou de forma não sincronizada por meio do fotoperíodo artificial (programa de luz) sem uso de hormônios. Neste caso, a associação com análogos sintéticos da prostaglandinas F2α pode auxiliar na sincronização de estro de animais previamente estimulados pela luz. Assim, o objetivo do estudo foi avaliar a combinação de ambas as técnicas para a indução e sincronização do estro na contra-estação reprodutiva de cabras da raça Saanen. Os resultados deste estudo sugerem a possibilidade de associação do programa de luz e...

Intravaginal hCG administration increases pregnancy rate in artificially inseminated cyclic dairy goats subjected to estrous synchronization.

Palavras-chave: Fotoperíodo; Monta natural controlada; AI; Natural service; Caprino; Cabra Leiteira; Reprodução Animal; Inseminação Artificial; Ciclo Estral; Dairy goats; Animal reproduction; Photoperiod; Artificial insemination; Estrus synchronization.

Ano: 2019

URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1112243

CORTÊS, L. S.; FRAGA, M. O.; SILVA, D. S.; PRATES, J. F.; MARTINS, B. B.; FIGUEIRA, L. M.; BONATO, G. C.; ARRAIS, A. M.; SOUZA-FABJAN, J. M. G.; BRANDÃO, F. Z.; 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.

Parâmetros reprodutivos de cabras Toggenburg inseminadas com sêmen resfriado, após diluição em meio à base de gema de ovo.

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

Reproductive parameters of dairy goats submitted to estrus synchronization with prostaglandin F2α associated or not to hCG at estrous onset

SIQUEIRA, A. P.; FONSECA, J. F. da; SILVA FILHO, J. M.; BRUSCHI, J. H.; VIANA, J. H. M.; PALHARES, M. S.; BRUSCHI, M. C. M.; PEIXOTO, M. P..

Avaliaram-se a taxa de concepção, a resposta à prostaglandina, a duração do estro, a categoria reprodutiva e o tipo de muco de cabras inseminadas com sêmen diluído em meio à base de gema de ovo e resfriado a 5oC, por 12 ou 24 horas. Foram utilizados dois reprodutores e 62 fêmeas da raça Toggenburg, que receberam duas doses de 22,5µg de PGF2a, em intervalos de 10 dias, para a sincronização do estro. A partir da primeira aplicação de PGF2a, o estro foi monitorado três vezes ao dia. Realizou-se uma única inseminação, 12 horas após o início do estro. As porcentagens de fêmeas em estro, após a primeira e segunda aplicações de PGF2a, foram de 85,5% e 88,7%, respectivamente. O intervalo de aplicação da primeira e segunda doses de PGF2a ao início do estro foi de...

Tipo: Artigo em periódico indexado (ALICE)

Palavras-chave: Caprino; Reprodução animal; Animal reproduction; Goat; Artificial insemination; Cooled semen; Conception rate; Estrus synchronization; Animal fertility.

Ano: 2009

URL: http://www.alice.cnptia.embrapa.br/handle/doc/534049

Arq. Bras. Med. Vet. Zootec.

Esteves,L.V.; Brandão,F.Z.; Cruz,R.C.; Souza,J.M.G.; Oba,E.; Facó,O.; Fonseca,J.F..

The objective of this study was to evaluate the efficiency of two doses of PGF associated or not to hCG on the associated reproductive parameters in dairy goats. A total of 29 goats received two doses of 30µg d-cloprostenol latero-vulvar at a 10 day intervals (Day 1 and Day 10). The does were allocated according to body weight and body condition score into two treatments, to receive hCG (250IU) or saline at estrus onset. After the second dose of PGF, estrus was monitored and ultrasound exams were performed twice daily. All does were inseminated 16h after estrus onset. Blood collection was performed every day for progesterone assay. The use of hCG at estrus onset did not affect any studied parameter and therefore the data were pooled. Estrous response rate...

Residual levels on medroxyprogesterone acetate (MAP) impregnated sponges after estrus synchronization treatment in cyclic ewes

Palavras-chave: Artificial insemination; D-cloprostenol; Estrus synchronization; Goats; Sexual behavior.

Ano: 2013

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000600001

Braz. J. Vet. Res. Anim. Sci.

SIMONETTI,Laura; GARDÓN,Juan Carlos; RAMOS,Guillermo.

A pool of polyurethane sponges impregnated with medroxyprogesterone acetate (MAP) was prepared. Real level of progestagen on sponges was checked prior to sponge treatment insertion. During spring a total of 126 cyclic Merino ewes were intravaginally treated with MAP-impregnated pessaries for the synchronization of estrus. After 14 days treatment, sponges were removed. Estrus detection was performed with vasectomized rams. Ewes were inspected for the presence of marks twice a day. Ewes in estrus were artificially inseminated with fresh diluted semen containing a dose of 300x10(6) total sperm. Artificial insemination was performed 12 hours after estrus presentation. Residual levels of MAP (RMAP) on removed sponges were measured by spectrophotometry at 241 nM...

Synchronization of estrus with two doses of cloprostenol at different intervals and Artificial Insemination in dairy goats.

Palavras-chave: Ewes; Estrus synchronization; Medroxyprogesterone acetate; Fertility.

Ano: 1999

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-95961999000500003

BONATO, C. G.; SOUZA-FABJAN, J. M. G.; CÔRTES, L. R.; OLIVEIRA, T. A.; ARRAIS, E. M.; MAIA, A. L. R. S.; PRATES, J. F.; VEIGA, M. O.; FONSECA, J. F. da.

The present study evaluated the efficacy of two protocols for estrus synchronization with different intervals in order to use them in artificial insemination (AI) in Saanen and Alpine multiparous goats in June (end of the natural mating season). The animals were allocated into two groups, according to breeding, parity, and body condition score to receive two doses of 37.5 ?g d-cloprostenol (Prolise®, ARSA SRL, Buenos Aires, Argentina) latero-vulvar 7.5 (n=23) and 11.5 (n=25) days. No animal became pregnant after NM. In AI animals, conception rate was 69.2% (9/13) for T7.5 and 70.6% (12/17) for T11.5 (P> 0.05). Even at the end of the breeding season, the protocols were able to synchronize a significant percentage of animals in a short window of time,...

The use of human chorionic gonadotropin seven days after synchronized estrus for the increase of luteal tissue in Morada Nova ewes.

Palavras-chave: Caprino; Reprodução Animal; Inseminação Artificial; Sincronização do Cio; Período de Gestação; Prenhez; Dairy goats; Animal reproduction; Artificial insemination; Estrus synchronization; Conception rate; Gestation period.

Ano: 2018

URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1095124

VERGANI, G. B.; TREVIZAN, J. T.; PEREIRA, V. S. do A.; FONSECA, J. F. da; GARCIA, A. R.; ESTEVES, S. N.; OLIVEIRA, M. E. F..

The study was performed to evaluate whether the use of hCG 7 days after synchronized oestrus in Morada Nova ewes would increase the number and size of corpora lutea. In conclusion, 300 IU of hCG injected 7 days after synchronized oestrus is effective to increase the number of corpora lutea and in the size of luteal tissue. Despite indications of a favourable effect on luteal dynamics, the effects on progesterone production and conception rate need to be examined.

The use of human chorionic gonadotropin seven days after synchronized estrus for the increase of luteal tissue in Morada Nova ewes.

Palavras-chave: Ovino; Ovelha; Corpo Lúteo; Progesterona; Ciclo Estral; Sheep; Ewes; Estrus synchronization; Corpus luteum hormones; Progesterone; Estrous cycle.

Ano: 2018

URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1111137

VERGANI, G. B.; TREVIZAN, J. T.; PEREIRA, V. S. do A.; FONSECA, J. F. da; GARCIA, A. R.; ESTEVES, S. N.; OLIVEIRA, M. E. F..

Timed hormonal treatments in induction and synchronization of Saanen goats estrus during nonbreeding season.

Palavras-chave: Ovino; Ovelha; Corpo Lúteo; Progesterona; Ciclo Estral; Sheep; Ewes; Estrus synchronization; Corpus luteum hormones; Progesterone; Estrous cycle.

Ano: 2018

URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1111121

ARAÚJO, A. C. C.; OLIVEIRA, J. S. K.; TORRES FILHO, R. A.; BRANDÃO, F. Z.; FONSECA, J. F. da.

With the aim to evaluate reproductive performance of Saanen goats among different timed hormonal protocols during nonbreeding season, 30 females had the estrus cycles induced and synchronized by insertion of an intravaginal sponge impregnated with 60mg Medroxyprogesterone Acetate. All goats received 200 IU eCG and 37.5 ?g PGF2? analog 24 hours prior to sponge removal. After 5 days of mating, all animals received 250 IU hCG. Animals were divided in 3 groups: Group 1 (G1) ? vaginal sponge remaining for 6 days (n=10); Group 2 (G2) ? vaginal sponge remaining for 9 days (n=10) and Group 3 (G3) ? vaginal sponge remaining for 12 days (n=10). An ultrasound scanner was used to determine time of ovulation and animals were tested for estrus by the use of a buck. All...