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Registro Completo |
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
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Data corrente: |
28/12/2016 |
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Data da última atualização: |
28/12/2016 |
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Autoria: |
MORLEY, F. H. W.; WHITE, D. H.; KENNEY, P. A.; DAVIS, I. F. |
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Título: |
Predicting ovulation rate from liveweight in ewes. |
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Ano de publicação: |
1978 |
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Fonte/Imprenta: |
Agricultural Systems, v. 3, n. 1, p. 27-45, Feb. 1978. |
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DOI: |
10.1016/0308-521X(78)90004-5 |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: The relationship between ovulation rate (OR), liveweight at an autumn mating (LW) and changes in LW (DW) prior to mating was examined in 393 mature Corriedale ewes, in several sets of published data involving Merino and Romney Marsh ewes and their crosses with Border Leicesters, as well as Perendales and Scottish Blackfaces. Between groups OR was strongly associated with LW, but in only one study with DW. Within groups of Corriedales there was a slight association of OR with LW. Responses of OR to LW, over all breeds and crosses except Scottish Blackface, were parallel, being an increase of approximately 2% ovulation rate for each kilogramme of mean LW increase.The fact that OR was much more closely related to LW than DW, over a wide range of genotypes, indicates the ovarian response to the current plane of nutrition to be less than to the body reserve status of the ewe. This indicates that the value of "flushing" ewes over a brief period before joining is unlikely greatly to improve lambing percentages, unless ewes are initially in poor condition.The incorporation of these results in models of sheep production will require information on the general level of ovulation in the ewes and the adequacy of the diet, especially the protein content, at the time of joining. |
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Thesagro: |
Ovelha; Ovino; Ovulação. |
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Thesaurus Nal: |
Ewes; Sheep; Weight gain. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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Marc: |
LEADER 01907naa a2200241 a 4500
001 2059384
005 2016-12-28
008 1978 bl uuuu u00u1 u #d
024 7 $a10.1016/0308-521X(78)90004-5$2DOI
100 1 $aMORLEY, F. H. W.
245 $aPredicting ovulation rate from liveweight in ewes.
260 $c1978
520 $aAbstract: The relationship between ovulation rate (OR), liveweight at an autumn mating (LW) and changes in LW (DW) prior to mating was examined in 393 mature Corriedale ewes, in several sets of published data involving Merino and Romney Marsh ewes and their crosses with Border Leicesters, as well as Perendales and Scottish Blackfaces. Between groups OR was strongly associated with LW, but in only one study with DW. Within groups of Corriedales there was a slight association of OR with LW. Responses of OR to LW, over all breeds and crosses except Scottish Blackface, were parallel, being an increase of approximately 2% ovulation rate for each kilogramme of mean LW increase.The fact that OR was much more closely related to LW than DW, over a wide range of genotypes, indicates the ovarian response to the current plane of nutrition to be less than to the body reserve status of the ewe. This indicates that the value of "flushing" ewes over a brief period before joining is unlikely greatly to improve lambing percentages, unless ewes are initially in poor condition.The incorporation of these results in models of sheep production will require information on the general level of ovulation in the ewes and the adequacy of the diet, especially the protein content, at the time of joining.
650 $aEwes
650 $aSheep
650 $aWeight gain
650 $aOvelha
650 $aOvino
650 $aOvulação
700 1 $aWHITE, D. H.
700 1 $aKENNEY, P. A.
700 1 $aDAVIS, I. F.
773 $tAgricultural Systems$gv. 3, n. 1, p. 27-45, Feb. 1978.
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Registro original: |
Embrapa Caprinos e Ovinos (CNPC) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Pecuária Sudeste. Para informações adicionais entre em contato com cppse.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Pecuária Sudeste. |
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Data corrente: |
26/06/2013 |
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Data da última atualização: |
22/08/2018 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 1 |
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Autoria: |
BERNARDI, A. C. de C.; RASSINI, J. B.; MENDONÇA, F. C.; FERREIRA, R. de P. |
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Afiliação: |
ALBERTO CARLOS DE CAMPOS BERNARDI, CPPSE; JOAQUIM BARTOLOMEU RASSINI, PESQUISADOR APOSENTADO DO CPPSE; FERNANDO CAMPOS MENDONÇA, ESALQ/USP, PIRACICABA,SP.; REINALDO DE PAULA FERREIRA, CPPSE. |
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Título: |
Alfalfa dry matter yield, nutritional status and economic analysis of potassium fertilizer doses and frequency. |
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Ano de publicação: |
2013 |
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Fonte/Imprenta: |
International journal of Agronomy and Plant Production, v. 4, n. 3, p. 389-398, 2013. |
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Páginas: |
10p. |
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ISSN: |
2051-1914 |
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Idioma: |
Português |
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Palavras-Chave: |
Soil testing; Use efficiency. |
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Thesagro: |
Medicago Sativa. |
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Thesaurus NAL: |
nutritional status; potassium; profitability. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 00763naa a2200241 a 4500
001 1960612
005 2018-08-22
008 2013 bl uuuu u00u1 u #d
022 $a2051-1914
100 1 $aBERNARDI, A. C. de C.
245 $aAlfalfa dry matter yield, nutritional status and economic analysis of potassium fertilizer doses and frequency.$h[electronic resource]
260 $c2013
300 $a10p.
650 $anutritional status
650 $apotassium
650 $aprofitability
650 $aMedicago Sativa
653 $aSoil testing
653 $aUse efficiency
700 1 $aRASSINI, J. B.
700 1 $aMENDONÇA, F. C.
700 1 $aFERREIRA, R. de P.
773 $tInternational journal of Agronomy and Plant Production$gv. 4, n. 3, p. 389-398, 2013.
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Embrapa Pecuária Sudeste (CPPSE) |
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