| |
|
|
 | 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: |
01/08/1992 |
|
Data da última atualização: |
22/07/2025 |
|
Autoria: |
NICHOLS, J. E. |
|
Título: |
Fertility in southdown sheep. |
|
Ano de publicação: |
1926 |
|
Fonte/Imprenta: |
The Journal of Agricultural Science, v. 16, n. 3, p. 365-375, 1926. |
|
DOI: |
http://dx.doi.org.sci-hub.org/10.1017/S0021859600007723 |
|
Idioma: |
Inglês |
|
Conteúdo: |
Abstract: Data from 26 flocks, involving a total of 5014 pure-bred Southdown ewes, were available for analysis and discussion. For ewes of all ages the proportion giving birth to twins is closely associated with the total yield of lambs, and while barrenness and abortion may to a certain extent be due to the same causes, it is those factors which cause abortion which also affect the yield by reducing the number of single births, rather than the number of multiple births. The low fertility of shearling ewes is due to barrenness through reduced or delayed ovulation. The writer wishes to express his thanks to the breeders who supplied the records of their flocks and particularly to the Honorary Secretary of the Southdown Sheep Society for his help in the collection of these records. The study of fertility in domestic animals is of considerable economic importance, but our knowledge of the variations of fertility in the different species is somewhat limited and is based chiefly on data abstracted from records kept by breeders. |
|
Thesagro: |
Fertilidade; Ovino; Reprodução; Reprodução animal. |
|
Thesaurus Nal: |
Female fertility; Reproduction; Sheep. |
|
Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
|
Marc: |
LEADER 01658naa a2200217 a 4500
001 1521542
005 2025-07-22
008 1926 bl uuuu u00u1 u #d
024 7 $ahttp://dx.doi.org.sci-hub.org/10.1017/S0021859600007723$2DOI
100 1 $aNICHOLS, J. E.
245 $aFertility in southdown sheep.$h[electronic resource]
260 $c1926
520 $aAbstract: Data from 26 flocks, involving a total of 5014 pure-bred Southdown ewes, were available for analysis and discussion. For ewes of all ages the proportion giving birth to twins is closely associated with the total yield of lambs, and while barrenness and abortion may to a certain extent be due to the same causes, it is those factors which cause abortion which also affect the yield by reducing the number of single births, rather than the number of multiple births. The low fertility of shearling ewes is due to barrenness through reduced or delayed ovulation. The writer wishes to express his thanks to the breeders who supplied the records of their flocks and particularly to the Honorary Secretary of the Southdown Sheep Society for his help in the collection of these records. The study of fertility in domestic animals is of considerable economic importance, but our knowledge of the variations of fertility in the different species is somewhat limited and is based chiefly on data abstracted from records kept by breeders.
650 $aFemale fertility
650 $aReproduction
650 $aSheep
650 $aFertilidade
650 $aOvino
650 $aReprodução
650 $aReprodução animal
773 $tThe Journal of Agricultural Science$gv. 16, n. 3, p. 365-375, 1926.
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 : 1 | |
| Registros recuperados : 1 | |
|
| Nenhum registro encontrado para a expressão de busca informada. |
|
|
