Effects of combining immunocastration and β-adrenergic agonists on the blood metabolites and their correlations with performance and carcass traits of finished Nellore cattle
| Autor: | Juan Fernando Morales Gómez, Camilla de Souza, Daniel Silva Antonelo, Keni Eduardo Zanoni Nubiato, Madeline Rezende Mazon, Arlindo Saran Netto, Nara Regina Brandão Cônsolo, Saulo da Luz e Silva |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
040301 veterinary sciences
Zilpaterol Nellore cattle animal production Animal production 0402 animal and dairy science Randomized block design Zilpaterol hydrochloride zilpaterol β adrenergic 04 agricultural and veterinary sciences Biology 040201 dairy & animal science SF1-1100 Animal culture 0403 veterinary science Ractopamine chemistry.chemical_compound Animal science Ractopamine hydrochloride chemistry physiology testosterone ractopamine Animal Science and Zoology |
| Zdroj: | Revista Brasileira de Zootecnia, Volume: 49, Article number: e20190146, Published: 16 NOV 2020 Revista Brasileira de Zootecnia v.49 2020 Revista Brasileira de Zootecnia Sociedade Brasileira de Zootecnia (SBZ) instacron:SBZ Revista Brasileira de Zootecnia, Vol 49 (2020) |
| Popis: | The objective of this study was to evaluate the effects of combining immunocastration and β-adrenergic agonists (β-AA) on blood metabolites and their correlations with performance and carcass traits of Nellore cattle. Ninety-six Nellore males were distributed in a randomized block design with a 2×3 factorial arrangement. The factors were two sexual conditions (immunocastrated and non-castrated), and three diets (control, with no inclusion of β-AA; RH, with 300 mg of ractopamine hydrochloride/d; and ZH, with 80 mg of zilpaterol hydrochloride/animal/d). The trial was conducted during 100 d, during which animals were fed ZH and RH for the last 30 and 33 d, respectively. Blood metabolites related to lipid and protein metabolism were assessed at the baseline (0 d of β-AA supplementation) and after 13 and 30 d of β-AA supplementation. No effect of sexual condition × β-AA supplementation × time on feed interaction was observed. Combining immunocastration with β-AA supplementation modified cholesterol and non-esterified fatty acids concentrations without affecting protein metabolism. Immunocastration enhances lipogenesis and reduces skeletal muscle accretion by increasing high-density lipoprotein and triglycerides concentrations and decreasing creatinine and creatine kinase concentrations, respectively. Zilpaterol hydrochloride enhances skeletal muscle accretion by decreasing urea and total protein concentrations and increases creatinine and creatine kinase concentrations without modifying lipid metabolism. |
| Databáze: | OpenAIRE |
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