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Registro Completo |
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Biblioteca(s): |
Embrapa Pantanal. |
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Data corrente: |
04/05/1999 |
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Data da última atualização: |
04/05/1999 |
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Autoria: |
PIMENTEL, C. A.; DESCHAMPS, J. C.; OLIVEIRA, J. A. F. de; CARDELINO, R.; PIMENTEL, M. A. |
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Título: |
Effects of early weaning on reproductive efficiency in beef cows. |
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Ano de publicação: |
1979 |
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Fonte/Imprenta: |
Theriogenology, v.11, n.6, p.421-427, 1979. |
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Idioma: |
Inglês |
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Conteúdo: |
Six hundred eighty-three mature cows of the Devon, A. Angus and Hereford breeds were
used to investigate the effect of weaning 90 days after calving on the postpartum repro- duction ( Anestrus and pregnancy rate ). The calving period was 90 days, from September to November( Spring 1976 ). The breeding period, also of 90 days, began at the end of the calving period and was from December to February ( Summer 1977 ). The
calves were separated from their mothers with a mean age of 90 days for "W" group of cows 200 days for the "S". Early weaning increased overall conception in the 90 days breeding period by 43.07% ( P < .001) and reduced the postpartum anestrus from 60.42% in the "S" group to 13.79% ( diference of 46.63% - P < .001 ) in the " W" group. |
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Thesagro: |
Desmama Precoce; Gado de Corte; Reprodução. |
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Thesaurus Nal: |
beef cattle; early weaning; reproduction. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01412naa a2200241 a 4500
001 1795586
005 1999-05-04
008 1979 bl --- 0-- u #d
100 1 $aPIMENTEL, C. A.
245 $aEffects of early weaning on reproductive efficiency in beef cows.
260 $c1979
520 $aSix hundred eighty-three mature cows of the Devon, A. Angus and Hereford breeds were used to investigate the effect of weaning 90 days after calving on the postpartum repro- duction ( Anestrus and pregnancy rate ). The calving period was 90 days, from September to November( Spring 1976 ). The breeding period, also of 90 days, began at the end of the calving period and was from December to February ( Summer 1977 ). The calves were separated from their mothers with a mean age of 90 days for "W" group of cows 200 days for the "S". Early weaning increased overall conception in the 90 days breeding period by 43.07% ( P < .001) and reduced the postpartum anestrus from 60.42% in the "S" group to 13.79% ( diference of 46.63% - P < .001 ) in the " W" group.
650 $abeef cattle
650 $aearly weaning
650 $areproduction
650 $aDesmama Precoce
650 $aGado de Corte
650 $aReprodução
700 1 $aDESCHAMPS, J. C.
700 1 $aOLIVEIRA, J. A. F. de
700 1 $aCARDELINO, R.
700 1 $aPIMENTEL, M. A.
773 $tTheriogenology$gv.11, n.6, p.421-427, 1979.
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Registro original: |
Embrapa Pantanal (CPAP) |
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