| |
|
|
 | Acesso ao texto completo restrito à biblioteca da Embrapa Caprinos e Ovinos. Para informações adicionais entre em contato com cnpc.biblioteca@embrapa.br. |
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
|
Data corrente: |
30/01/1996 |
|
Data da última atualização: |
05/06/2023 |
|
Autoria: |
MANI, A. U.; McKELVEY, W. A. C.; WATSON, E. D. |
|
Título: |
The effecrs of low level of feeding on response to synchronization of estrus, ovulation rate and embryo loss in goats. |
|
Ano de publicação: |
1992 |
|
Fonte/Imprenta: |
Theriogenology, v. 38, n. 6, p. 1013-1022, Dec. 1992. |
|
DOI: |
https://doi.org/10.1016/0093-691X(92)90115-8 |
|
Idioma: |
Inglês |
|
Conteúdo: |
Abstract: Mature nonlactating British Saanen and Toggenburg does with a body score 2 were fed 25% (n=24) and 100% (n=16) maintenance rations from about 19 days before mating until slaughter at approximately 60 days after mating. Estrus was synchronized using PGF2?, and the ovulation rate was determined by laparoscopic examination of the ovaries once between Days 6 and 10 after mating. Pregnancy rate, potential kidding rate and embryo loss were determined by counts of viable fetuses at slaughter. The proportion of does in estrus within 96 hours of PGF2? administration was not different (P<0.5) between the feed-restricted and the maintenance groups (71.0% and 87.5%, respectively); however, the time of onset of estrus after PGF2? tended to be longer (P=0.12) in the feed-restricted group. Ovulation rate, incidence of multiple ovulations and proportion of does pregnant at 60 days were significantly lower (P=0.0004, P=0.025, P=0.05, respectively) in the restricted group. More embryos from single than multiple ovulations were lost in the restricted group (P=0.01). There was no difference in the overall ovulatory activity between right and left ovaries in the 2 groups. Transuterine migrations were observed in all does that had unilateral multiple ovulations. No migration was observed in does which had single ovulations. These data indicate that restricted feed intake in goats tended to delay the onset of estrus and lowered the ovulation rate, incidence of multiple ovulations, and pregnancy rate. MenosAbstract: Mature nonlactating British Saanen and Toggenburg does with a body score 2 were fed 25% (n=24) and 100% (n=16) maintenance rations from about 19 days before mating until slaughter at approximately 60 days after mating. Estrus was synchronized using PGF2?, and the ovulation rate was determined by laparoscopic examination of the ovaries once between Days 6 and 10 after mating. Pregnancy rate, potential kidding rate and embryo loss were determined by counts of viable fetuses at slaughter. The proportion of does in estrus within 96 hours of PGF2? administration was not different (P<0.5) between the feed-restricted and the maintenance groups (71.0% and 87.5%, respectively); however, the time of onset of estrus after PGF2? tended to be longer (P=0.12) in the feed-restricted group. Ovulation rate, incidence of multiple ovulations and proportion of does pregnant at 60 days were significantly lower (P=0.0004, P=0.025, P=0.05, respectively) in the restricted group. More embryos from single than multiple ovulations were lost in the restricted group (P=0.01). There was no difference in the overall ovulatory activity between right and left ovaries in the 2 groups. Transuterine migrations were observed in all does that had unilateral multiple ovulations. No migration was observed in does which had single ovulations. These data indicate that restricted feed intake in goats tended to delay the onset of estrus and lowered the ovulation rate, incidence of multiple ovulations, and pr... Mostrar Tudo |
|
Palavras-Chave: |
Estro; Sincronizacao. |
|
Thesagro: |
Alimentação; Caprino; Reprodução. |
|
Thesaurus Nal: |
Estrus synchronization; Goats; Ovulation; Pregnancy rate; Reproduction; Restricted feeding; Ruminant nutrition. |
|
Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
|
Marc: |
LEADER 02413naa a2200301 a 4500
001 1521956
005 2023-06-05
008 1992 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/0093-691X(92)90115-8$2DOI
100 1 $aMANI, A. U.
245 $aThe effecrs of low level of feeding on response to synchronization of estrus, ovulation rate and embryo loss in goats.$h[electronic resource]
260 $c1992
520 $aAbstract: Mature nonlactating British Saanen and Toggenburg does with a body score 2 were fed 25% (n=24) and 100% (n=16) maintenance rations from about 19 days before mating until slaughter at approximately 60 days after mating. Estrus was synchronized using PGF2?, and the ovulation rate was determined by laparoscopic examination of the ovaries once between Days 6 and 10 after mating. Pregnancy rate, potential kidding rate and embryo loss were determined by counts of viable fetuses at slaughter. The proportion of does in estrus within 96 hours of PGF2? administration was not different (P<0.5) between the feed-restricted and the maintenance groups (71.0% and 87.5%, respectively); however, the time of onset of estrus after PGF2? tended to be longer (P=0.12) in the feed-restricted group. Ovulation rate, incidence of multiple ovulations and proportion of does pregnant at 60 days were significantly lower (P=0.0004, P=0.025, P=0.05, respectively) in the restricted group. More embryos from single than multiple ovulations were lost in the restricted group (P=0.01). There was no difference in the overall ovulatory activity between right and left ovaries in the 2 groups. Transuterine migrations were observed in all does that had unilateral multiple ovulations. No migration was observed in does which had single ovulations. These data indicate that restricted feed intake in goats tended to delay the onset of estrus and lowered the ovulation rate, incidence of multiple ovulations, and pregnancy rate.
650 $aEstrus synchronization
650 $aGoats
650 $aOvulation
650 $aPregnancy rate
650 $aReproduction
650 $aRestricted feeding
650 $aRuminant nutrition
650 $aAlimentação
650 $aCaprino
650 $aReprodução
653 $aEstro
653 $aSincronizacao
700 1 $aMcKELVEY, W. A. C.
700 1 $aWATSON, E. D.
773 $tTheriogenology$gv. 38, n. 6, p. 1013-1022, Dec. 1992.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Caprinos e Ovinos (CNPC) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
| Registros recuperados : 104 | |
| 12. |  | EMBRAPA HORTALIÇAS. Alho: semente livre de vírus. Brasília, DF: Embrapa Informação Tecnológica: Embrapa Hortaliças, 2002. 1 fita de vídeo (6 min.), VHS, son., color. Equipe Técnica: André Nepomuceno Dusi, Antônio Carlos Ávila, Antônio Carlos Torres, Dione Melo da Silva, Francisco Vilela Resende, José Amauri Buso.| Biblioteca(s): Embrapa Hortaliças. |
|   |
| 13. | | EMBRAPA HORTALIÇAS. Alfa Tropical: pronta para o verão. Brasília, DF: 2003. Equipe técnica: Desenvolvimento da cultivar: Marcelo de Targo Araújo, Ângelo Giovane Rodrigues; Validação e recomendação para novas regiões: José Lindorico de Mendonça, José Amauri Buso, Nivaldo Duarte Costa, José Geraldo Olyntho...| Biblioteca(s): Embrapa Hortaliças. |
| |
| Registros recuperados : 104 | |
|
| Nenhum registro encontrado para a expressão de busca informada. |
|
|
