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Registro Completo |
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Biblioteca(s): |
Embrapa Gado de Corte. |
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Data corrente: |
26/09/2007 |
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Data da última atualização: |
18/12/2007 |
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Autoria: |
EUCLIDES FILHO, K.; RESTLE, J.; OLSON, T. A.; KOGER, M.; HARGROVE, D. D. |
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Afiliação: |
EMBRAPA. Centro Nacional de Pesquisa de Gado de Corte (Campo Grande, MS). |
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Título: |
Measures of efficiency of calf production from cows of differente size and milking ability. |
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Ano de publicação: |
1983 |
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Fonte/Imprenta: |
Florida Beef Cattle Research Report, Gainesville : IFAS, 1983. |
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Páginas: |
p.13-17. |
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Idioma: |
Inglês |
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Notas: |
CNPGC. |
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Conteúdo: |
Angus (A), Brown Swiss (BS) and Brown Swiss x Angus F cows (reciprocals combined) were mated to A, BS and F1 bulls in diallel schme to produce nine breed types of calves. Calf weaning weights and estimated daily milk production of the BS dams (250 and 8,3 Kg) were superior (P<.01) those of the Angus dams (222 and 6.8 Kg).which in turn surpassed (P<.01) those of the angus dams (187 and 5.3 kg). Calves out of Angus cows had the highest (P<.01) total TDN consumption. The calf wight to cow weight ratios were essentially equal for the BS (50) and F1 (.49) cows both of which were greater (P<.01) than that of a cows (.45). The F and A cows did not differ (P>.05) in pregnancy rate (96 and 97%, respectively) while the BS cows at 76% were lower (P<.01). Feed efficiency values expressed as total ration TDN consumed by the group of cows and calves divided by calf weaning weight were superior (P<.01) for A cows (7.35) while those of the BS (8.91) and F1 (8.28) cows did not differ significantly for A (7.66) and F1 (8.56) cows but the value for BS cows was much higher (indicating poorer efficiency) at 12.55. Under the management conditions of this experiment weaning weight but not overall efficiency was improved through the use of crossbreeding of the Angus with alarge dairy breed, the Brown Swiss. |
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Palavras-Chave: |
Calf; Cow; Melhoramento genetico; Pardo Suico. |
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Thesagro: |
Bezerro; Cruzamento; Eficiência Reprodutiva; Leite; Produção; Vaca. |
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Thesaurus Nal: |
Angus; breeding; Brown Swiss; cattle; crossbreds; milk production; reproductive performance. |
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Categoria do assunto: |
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Marc: |
LEADER 02332naa a2200397 a 4500
001 1318222
005 2007-12-18
008 1983 bl uuuu u00u1 u #d
100 1 $aEUCLIDES FILHO, K.
245 $aMeasures of efficiency of calf production from cows of differente size and milking ability.
260 $c1983
300 $ap.13-17.
500 $aCNPGC.
520 $aAngus (A), Brown Swiss (BS) and Brown Swiss x Angus F cows (reciprocals combined) were mated to A, BS and F1 bulls in diallel schme to produce nine breed types of calves. Calf weaning weights and estimated daily milk production of the BS dams (250 and 8,3 Kg) were superior (P<.01) those of the Angus dams (222 and 6.8 Kg).which in turn surpassed (P<.01) those of the angus dams (187 and 5.3 kg). Calves out of Angus cows had the highest (P<.01) total TDN consumption. The calf wight to cow weight ratios were essentially equal for the BS (50) and F1 (.49) cows both of which were greater (P<.01) than that of a cows (.45). The F and A cows did not differ (P>.05) in pregnancy rate (96 and 97%, respectively) while the BS cows at 76% were lower (P<.01). Feed efficiency values expressed as total ration TDN consumed by the group of cows and calves divided by calf weaning weight were superior (P<.01) for A cows (7.35) while those of the BS (8.91) and F1 (8.28) cows did not differ significantly for A (7.66) and F1 (8.56) cows but the value for BS cows was much higher (indicating poorer efficiency) at 12.55. Under the management conditions of this experiment weaning weight but not overall efficiency was improved through the use of crossbreeding of the Angus with alarge dairy breed, the Brown Swiss.
650 $aAngus
650 $abreeding
650 $aBrown Swiss
650 $acattle
650 $acrossbreds
650 $amilk production
650 $areproductive performance
650 $aBezerro
650 $aCruzamento
650 $aEficiência Reprodutiva
650 $aLeite
650 $aProdução
650 $aVaca
653 $aCalf
653 $aCow
653 $aMelhoramento genetico
653 $aPardo Suico
700 1 $aRESTLE, J.
700 1 $aOLSON, T. A.
700 1 $aKOGER, M.
700 1 $aHARGROVE, D. D.
773 $tFlorida Beef Cattle Research Report, Gainesville : IFAS, 1983.
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Registro original: |
Embrapa Gado de Corte (CNPGC) |
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