Data/hora: 03/06/2024 00:40:26

Provedor de dados: | 2
País: | Brazil
Título: | Dry matter intake and milk yield of cows grazing Xaraés palisadegrass under different management strategies
Autores: | Carvalho, Vinícius Emanoel; Araújo, Saulo Alberto do Carmo; Alves, Danilo de Oliveira; Santos, Carlos César dos; Rocha, Norberto Silva.
Data: | 2019-06-25
Ano: | 2019
Palavras-chave: | Produção Animal; Forragicultura animal production; Dairy cattle; Grazing strategies; Light interception; Milk production; Occupation period.
Resumo: | This study aimed to evaluate the intake and milk yield of crossbred cows (Holstein x Zebu), under two management strategies, based on 95% light interception and fixed days. Eight lactating cows with body weight of 466 kg (± 35 kg) and lactation stage of 137 days (± 107 days) were used, four animals were assigned to each treatment. Dry matter intake was estimated indirectly, using neutral detergent insoluble fiber as internal indicator and chromium oxide as external indicator. This was a completely randomized design, with four replications, two grazing strategies and three days of occupation. The animals under light management showed dry matter intake on the first day (11.42 kg) similar to the second day (9.57 kg), and this was similar to the third day (7.06 kg), but the intake on the first day was greater than on the third day. On the fixed days, intake did not differ between the first and second day (12.05 and 11.47 kg, respectively), and intake of the third day (6.70 kg) was lower than in the first two days. The dry matter intake in relation to the body weight of the animals presented similar results to the dry matter intake of forage in kilos, which can be explained by the small difference in weight between the mean of the groups. The individual milk yield showed a similar behavior among the grazing strategies for the days of occupation, which increased from the first to the second day (12.49 to 13.88 kg) and decreased from the second to the third day (12.20 kg). Grazing management strategies did not promote differences in the performance traits of lactating cows. The day of grazing during the period of occupation can be decisive for intake and production.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês

Identificador:

http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/46843

10.4025/actascianimsci.v41i1.46843

Editor: | Editora da Universidade Estadual de Maringá
Relação: | http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/46843/pdf
Formato: | application/pdf

Fonte:

Acta Scientiarum. Animal Sciences; v. 41 (2019): Publicação Contínua; e46843

Acta Scientiarum. Animal Sciences; v. 41 (2019): Publicação Contínua; e46843

1807-8672

1806-2636

Fonte:

Direitos autorais 2019 Acta Scientiarum. Animal Sciences

http://creativecommons.org/licenses/by/4.0