Associations of blood parameters with age, feed efficiency and sampling routine in young beef bulls

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• 关键词：Age ; Beef cattle ; Cholesterol ; Osmolality ; Slaughter ; Triiodothyronine
• 刊名：Livestock Science
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：195
• 期：Complete
• 页码：27-37
• 全文大小：851 K
• 卷排序：195

文摘

Age variation in contemporary groups of bulls relates to metabolic differences. Younger bulls have lower testosterone and FSH and suggested higher AMH. Blood sampling routine affects the suitability of proxies for feed efficiency. Blood T3 is influenced by the interaction between age and feed efficiency. Cholesterol is robust to sampling routines and may be a proxy for feed efficiency.