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Registro Completo |
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Biblioteca(s): |
Embrapa Pantanal. |
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Data corrente: |
07/10/1996 |
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Data da última atualização: |
03/04/2017 |
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Autoria: |
WETTEMANN, R. P.; LUSBY, K. S.; GARMENDIA, J. C.; RICHARDS, M. W.; SELK, G. E.; RASBY, R. J. |
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Título: |
Postpartum nutrition, body condition and reproductive performance of first calf heifers. |
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Ano de publicação: |
1986 |
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Fonte/Imprenta: |
Animal Science Research Report, v.118, p.314-315, 1986. |
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Idioma: |
Inglês |
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Conteúdo: |
Forty Hereford and Angus x hereford first calf 2-yr-old heifers calving in February and March were used in the first replicate of a study to evaluate the influence of body condition score at calving and nutrient intake post partum on reproduction and calf performance. Birth weights of calves were not influenced by body condition score at parturition. Heifers were fed to amaintain or gain weight after calving. At the start of the breeding season, gain heifers were heavier (377 vs 313 kg) and had a greater body condition score (5.4 vs 4.7) than maintain heifers. Of the heifers calving with a body condition score of 4 and fed to maintain weight, fewer had ovarian activity during the breeding season compared with heifers that calved with a body condition score of 5 or 6 and maintained weight, or calved at body condition score 4, 5 or 6 and gained weight. Preganancy rate was reduced in heifers with body condition score of 4 that maintained weight post partum (20%) compred to the other treatments (75-100%). These data suggest that calf birth weight is not influenced by body condition score between 4 and 6 at calving but reproductive performance may be altered. |
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Palavras-Chave: |
Heifer; Novilha; Post partum. |
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Thesagro: |
Nutrição; Reprodução. |
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Thesaurus Nal: |
body condition; nutrition; reproduction. |
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Categoria do assunto: |
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Marc: |
LEADER 01911naa a2200277 a 4500
001 1789803
005 2017-04-03
008 1986 bl --- 0-- u #d
100 1 $aWETTEMANN, R. P.
245 $aPostpartum nutrition, body condition and reproductive performance of first calf heifers.
260 $c1986
520 $aForty Hereford and Angus x hereford first calf 2-yr-old heifers calving in February and March were used in the first replicate of a study to evaluate the influence of body condition score at calving and nutrient intake post partum on reproduction and calf performance. Birth weights of calves were not influenced by body condition score at parturition. Heifers were fed to amaintain or gain weight after calving. At the start of the breeding season, gain heifers were heavier (377 vs 313 kg) and had a greater body condition score (5.4 vs 4.7) than maintain heifers. Of the heifers calving with a body condition score of 4 and fed to maintain weight, fewer had ovarian activity during the breeding season compared with heifers that calved with a body condition score of 5 or 6 and maintained weight, or calved at body condition score 4, 5 or 6 and gained weight. Preganancy rate was reduced in heifers with body condition score of 4 that maintained weight post partum (20%) compred to the other treatments (75-100%). These data suggest that calf birth weight is not influenced by body condition score between 4 and 6 at calving but reproductive performance may be altered.
650 $abody condition
650 $anutrition
650 $areproduction
650 $aNutrição
650 $aReprodução
653 $aHeifer
653 $aNovilha
653 $aPost partum
700 1 $aLUSBY, K. S.
700 1 $aGARMENDIA, J. C.
700 1 $aRICHARDS, M. W.
700 1 $aSELK, G. E.
700 1 $aRASBY, R. J.
773 $tAnimal Science Research Report$gv.118, p.314-315, 1986.
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Embrapa Pantanal (CPAP) |
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