Data/hora: 01/06/2024 00:47:17

Provedor de dados: | 63
País: | Brazil
Título: | Salinomycin and virginiamycin for lactating cows supplemented on pasture
Autores: | Oliveira,Isis Scatolin de; Sousa,Daniel de Paula; Queiroz,Augusto Cesar de; Macedo,Bruna Gomes; Neves,Camila Garcia; Bianchi,Isabela Eloisa; Teobaldo,Ronyatta Weich.
Data: | 2015-08-01
Ano: | 2015
Palavras-chave: | Panicum maximum; Digestibility; Feeding behavior; Ionophores; Nitrogen balance.
Resumo: | Animals on pasture generally show higher feed efficiency as a result of the use of antibiotics. This study evaluated the effect of the antimicrobials salinomycin and/or virginiamycin on production and the ruminal parameters of supplemented dairy cows grazing on Panicum maximum cv. Tanzania. Twelve Holstein/Zebu multiparous cows were used, distributed in three Latin squares, one for the evaluation of ruminal parameters, and the others for production parameters. Cows on pasture were fed 50 % of their estimated intake with corn silage and concentrate supplements containing salinomycin, virginiamycin or a combination of additives, in doses of 120 and 150 mg kg−1, respectively. There were no differences in milk production and composition, energy and nitrogen balance, dry matter digestibility and feeding behavior. However, salinomycin and virginiamycin each reduced pasture and total dry matter intake by about 14 % and 10 %, with a consequent improvement in feed efficiency.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162015000400285
Editor: | São Paulo - Escola Superior de Agricultura "Luiz de Queiroz"
Relação: | 10.1590/0103-9016-2013-0401
Formato: | text/html
Fonte: | Scientia Agricola  v.72 n.4 2015
Fonte: | info:eu-repo/semantics/openAccess