Influence of tannin-rich pine bark supplementation in the grain mixes for meat goats: Growth performance, blood metabolites, and carcass characteristics

• 来源期刊: 动物营养（英文版）
• 年，卷（期）: 2020,（1）
• 所属期刊栏目: FEED EVALUATION
• 页码范围: 85-91
• 页数: 7页
• 语种: 英文

摘要

The objective was to evaluate the use of condensed tannin (CT)-rich ground pine bark (PB) in grain mixed diets on meat goat growth performance, blood metabolites, and carcass characteristics. Twenty four Kiko crossbred (Capra aegagrus hircus) growing male kids (BW=36.9 ± 2.5 kg) at approximately 8 months of age were assigned randomly to 2 treatments with 3 replicates per treatment and 4 goats per replicate. The goats were fed grain mixed diets composed of either 30％bermudagrass hay (BGH) plus concentrate (control) or 30％ PB plus concentrate. Diets were fed at 1.2％ of BW. In addition, all goats grazed a crabgrass/bermudagrass (CB)-based pasture. The feeding trial lasted for 55 d. Using ground PB as a supplement did not negatively affect BW, average daily gain (ADG), carcass characteristics, meat pH, and meat color compared to the control diet. Plasma gamma-glutamyl transferase (P = 0.03), glucose (P < 0.01) and Ca concentrations (P = 0.04) were higher for PB than for BGH, respectively. The 30％ PB supplementation does not negatively affect animal performance, blood metabolites, and carcass parameters.