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Registro Completo |
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Biblioteca(s): |
Embrapa Pantanal. |
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Data corrente: |
29/07/2014 |
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Data da última atualização: |
11/02/2015 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
ÍTAVO, L. C. V.; EUCLIDES FILHO, K.; TORRES JUNIOR, R. A. de A.; ÍTAVO, C. C. B. F.; NOGUEIRA, E.; DIAS, A. M. |
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Afiliação: |
LUÍS CARLOS VINHAS ÍTAVO, UCDB; KEPLER EUCLIDES FILHO, DPD; ROBERTO AUGUSTO DE A TORRES JUNIOR, CNPGC; CAMILA CELESTE BRANDÃO FERREIRA ÍTAVO, UFMS; ERIKLIS NOGUEIRA, CPAP; ALEXANDRE MENEZES DIAS, UFMS. |
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Título: |
Efficiency of calf production of cows from two genetic groups. |
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Ano de publicação: |
2014 |
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Fonte/Imprenta: |
Revista Brasileira de Zootecnia, v. 43, n. 7, p. 390-394, july 2014. |
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ISSN: |
1806-9290 |
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Idioma: |
Inglês |
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Conteúdo: |
The objective was to evaluate the effect of weight, age and production efficiency of cows from genetic groups based on the calf weight at calving and at weaning. For a period of five years, data of 120 cows (60 Angus-Nellore (AN) and 60 Simmental-Nellore (SN)) at four to nine-years of age were evaluated. All cows were maintained on Brachiaria decumbens pastures, with two forage availability levels (high and low), distributed in a randomized-block design. The cows were placed together with Canchim bulls to generate the crossbred calves. A supplement, consisting of 200 g/kg crude protein and 820 g/kg of total digestible nutrients, was provided to the calves in creep feeding until 210 days-old (weaning). Supplement had a significant effect on the weight of the cow at calving and weaning. The average weights of the Angus-Nellore cows were 529.19 and 514.23 kg at calving and on the weaning day, respectively. These values were higher for Simmental-Nellore cows, which presented 569.60 and 542.59 kg, respectively. The male-calf weight at weaning was 254.69 kg, which was higher than the females (237.70 kg). Genetic group had no effect on weaning weight. The average weight for Canchim × Angus-Nellore calves was 243.41 kg and for Canchim × Simmental-Nellore it was 248.98 kg. Cow age affected weaning weight, promoting a linear increase of 0.804 kg in the weaning weight each year. Younger and smaller cows (Angus-Nellore) are more efficient for calf production. |
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Palavras-Chave: |
Calf performance; Crossbreed; Efficiency. |
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Thesaurus Nal: |
body size. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/105585/1/Efficiency-of-calf-production-of-cows-from-two-genetic-groups-sbz-jul-20141.pdf
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Marc: |
LEADER 02140naa a2200241 a 4500
001 1991439
005 2015-02-11
008 2014 bl uuuu u00u1 u #d
022 $a1806-9290
100 1 $aÍTAVO, L. C. V.
245 $aEfficiency of calf production of cows from two genetic groups.
260 $c2014
520 $aThe objective was to evaluate the effect of weight, age and production efficiency of cows from genetic groups based on the calf weight at calving and at weaning. For a period of five years, data of 120 cows (60 Angus-Nellore (AN) and 60 Simmental-Nellore (SN)) at four to nine-years of age were evaluated. All cows were maintained on Brachiaria decumbens pastures, with two forage availability levels (high and low), distributed in a randomized-block design. The cows were placed together with Canchim bulls to generate the crossbred calves. A supplement, consisting of 200 g/kg crude protein and 820 g/kg of total digestible nutrients, was provided to the calves in creep feeding until 210 days-old (weaning). Supplement had a significant effect on the weight of the cow at calving and weaning. The average weights of the Angus-Nellore cows were 529.19 and 514.23 kg at calving and on the weaning day, respectively. These values were higher for Simmental-Nellore cows, which presented 569.60 and 542.59 kg, respectively. The male-calf weight at weaning was 254.69 kg, which was higher than the females (237.70 kg). Genetic group had no effect on weaning weight. The average weight for Canchim × Angus-Nellore calves was 243.41 kg and for Canchim × Simmental-Nellore it was 248.98 kg. Cow age affected weaning weight, promoting a linear increase of 0.804 kg in the weaning weight each year. Younger and smaller cows (Angus-Nellore) are more efficient for calf production.
650 $abody size
653 $aCalf performance
653 $aCrossbreed
653 $aEfficiency
700 1 $aEUCLIDES FILHO, K.
700 1 $aTORRES JUNIOR, R. A. de A.
700 1 $aÍTAVO, C. C. B. F.
700 1 $aNOGUEIRA, E.
700 1 $aDIAS, A. M.
773 $tRevista Brasileira de Zootecnia$gv. 43, n. 7, p. 390-394, july 2014.
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Registro original: |
Embrapa Pantanal (CPAP) |
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