| Registro completo |
| Provedor de dados: |
Animal Sciences
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| País: |
Brazil
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| Título: |
Body size and its effects on productive efficiency of cows with predominant Nellore genetic composition
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| Autores: |
Farias, Gustavo Duarte
Cerdótes, Liliane
Restle, João
Pascoal, Leonir Luiz
Costa, Pablo Tavares
Ferreira, Otoniel Geter Lauz
Vaz, Ricardo Zambarda
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| Data: |
2018-10-01
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| Ano: |
2018
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| Palavras-chave: |
Weaning
Calf production
Lactation
Production per area.
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| Resumo: |
This study was developed to evaluate productive efficiency during the lactation period of cows with predominant Nellore genetic composition based on their body size. Cows were divided into the following categories: light (≤ 316 kg), moderate (≥ 317 and ≤ 400 kg), or heavy (≥ 401 kg). Body weight change and total gain from birth to 210 days of age of calves born from heavy cows (0.155±0.03 and 111.6±5.1 kg) were higher than those of calves born from light (0.064±0.03 and 91.0±4.3 kg) and moderate (0.144±0.03 and 97.7±4.0 kg) cows. Calf production index differed (p < 0.05) with the herd of heavy cows (93.5±3.2 kg), producing 57.4 and 19.7% more kilograms of calf than light (59.4±2.7 kg) and moderate (78.1±2.4 kg) cows, respectively. Heavy Nellore cows produce heavier calves and have a better reproductive performance, which lead to a better calf production index. However, they require a larger area for the same herbage allowance. Calves born from heavier Nellore cows gain more weight from birth to 210 days of age and are heavier from 210 to 270 days of age.
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| Tipo: |
Info:eu-repo/semantics/article
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| Idioma: |
Inglês
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| Identificador: |
http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/42532
10.4025/actascianimsci.v40i1.42532
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| Editor: |
Editora da Universidade Estadual de Maringá
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| Relação: |
http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/42532/pdf
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| Formato: |
application/pdf
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| Fonte: |
Acta Scientiarum. Animal Sciences; v. 40 (2018): Publicação Contínua; e42532
Acta Scientiarum. Animal Sciences; v. 40 (2018): Publicação Contínua; e42532
1807-8672
1806-2636
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| Direitos: |
Direitos autorais 2018 Acta Scientiarum. Animal Sciences
http://creativecommons.org/licenses/by/4.0
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