Effect of zilpaterol hydrochloride on animal performance and carcass characteristics in sheep: a meta-analysis

Autor: Manuel González Ronquillo, José Armando Partida de la Peña, Arturo Ortiz Rodea, Martín Barbosa Amezcua
Rok vydání: 2015
Předmět:
Zdroj: Journal of Applied Animal Research. 44:104-112
ISSN: 0974-1844
0971-2119
Popis: The present study constitutes a meta-analysis of the use of zilpaterol hydrochloride (ZH) in sheep production (18 studies, n = 724 animals were evaluated), focused in its effects on productive performance and carcass characteristics in sheep who were given ZH in different doses (control 0, ≤0.50 and ≥0.54 mg/kg raised to the power 0.75 body weight (BW)). The analysis of the data assembled in the database was conducted by a statistical meta-analysis based on mixed model methodology. Results on weight gain were higher (P 0.05) between treatments, fat content in the carcass diminished in a linear effect (P = 0.02) with the inclusion of ZH. The results show a positive effect on improving animal performance, mainly in the characteristics on the fat deposition. The optimal dose var...
Databáze: OpenAIRE