【摘 要】
：
To determine whether Lactobacillusjohnsonii BS15 supplementation improves the growth performance and meat quality of broilers, 450 1-day-old male chicks (Cobb 500) were randomly divided into three gro
【机 构】
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Animal Microecology Institute, College of Veterinary, Sichuan Agricultural University, Chengdu 61113
【出 处】
：
中国畜牧兽医学会动物微生态学分会第五届第十二次全国学术研讨会
论文部分内容阅读
To determine whether Lactobacillusjohnsonii BS15 supplementation improves the growth performance and meat quality of broilers, 450 1-day-old male chicks (Cobb 500) were randomly divided into three groups: control group (basal com-soybean diet), L-BS15 group (basal diet + 1 × 105 colony-forming unit BS15/g as feed), and H-BS15 group (basal diet + 1 × 106 colony-forming unit BS15/g as feed).These diets were fed for 42 days.Abdominal fat decreased (P <0.05) as the concentration of BS15 increased.BS15 supplementation significantly increased the pH at 24 h after sacrifice and decreased drip loss and shearing force (P < 0.05), although meat colour and pH at 40 min after sacrifice remained unchanged.Antioxidant capacity and total protein and intramuscular fat levels were unchanged by the treatments, but BS15 supplementation significantly increased inosine monophosphate level and decreased total cholesterol and triglyceride levels (P < 0.05).The levels ofproline, total amino acids, and flavour-related amino acids were increased (P <0.05) by BS15 supplementation, but the levels of other amino acids did not change significantly.BS15 supplementation significantly decreased (P < 0.05) C16:0, C22:4n-6, and n-6:n-3 ratio and increased (P < 0.05) C18:3n-3,C20:5n-3,C22:6n-3, total polyunsaturated fatty acid (PUFA), n-3 PUFA and PUFA : saturated fatty acid ratio.These findings suggest that L.johnsonii BS 15 supplementation improves the meat quality of broilers by increasing the shelf life and flavour and nutritional substances.In addition, BS15 supplementation can induce changes in fat deposits and fatty acid composition.
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