摘要
本试验旨在研究饲粮中添加不同比例甘蔗梢对肉兔生长性能、血清生化指标和肉品质的影响.试验选择240只断奶新西兰白兔,随机分为4组,每组6个重复,每个重复10只,分别饲喂添加0(A组)、33％(B组)、66％(C组)、100％(D组)甘蔗梢等比例替代苜蓿的试验饲粮.试验期49 d,其中预试期7 d,正试期42 d.结果表明:1)与A组相比,肉兔饲粮中添加不同比例甘蔗梢对肉兔平均日采食量和成活率无显著影响(P＞0.05),显著影响平均日增重和料重比(P＜0.05);B组的平均日增重和料重比与A组相比差异不显著(P＞0.05),但随着甘蔗梢添加比例的增加,平均日增重显著降低(P＜0.05),料重比显著升高(P＜0.05).2)与A组相比,肉兔饲粮中添加不同比例甘蔗梢对肉兔血清总蛋白、白蛋白、尿素氮、总胆固醇含量及碱性磷酸酶、谷丙转氨酶活性无显著影响(P＞0.05),对葡萄糖和甘油三酯含量有显著影响(P＜0.05);随着甘蔗梢添加比例的增加,血清葡萄糖和甘油三酯含量显著升高(P＜0.05).3)与A组相比,肉兔饲粮中添加不同比例甘蔗梢对肉兔屠宰性能有显著影响(P＜0.05),对肉兔背肌和腿肌的肌肉化学组成、肉色、pH45min、pH24h和滴水损失等肉质指标无显著影响(P＞0.05);随着甘蔗梢添加比例的增加,肉兔半净膛重、全净膛重显著下降(P＜0.05),但是全净膛率无显著变化(P＞0.05).综上所述,在肉兔饲粮中以33％的甘蔗梢等比例替代苜蓿对肉兔的生长性能、血清生化指标、屠宰性能以及肉品质无不良影响.
Abstract
The purpose of this experiment was to study the effects of diets with different proportions of sugar-cane tops on growth performance,serum biochemical indexes and meat quality of meat rabbits.The experiment selected 240 New Zealand weaned white rabbits,randomly divided into 4 groups,with 6 replicates in each group and 10 rabbits in each replicate.The rabbits were fed experimental diets with 0(group A),33％(group B),66％(group C)and 100％(group D)sugarcane tops replacement alfalfa,respectively.The feeding ex-periment lasted for 49 days,the pre-test period lasted for 7 days,and the trial period lasted for 42 days.The results showed as follows:1)compared with group A,adding different proportions of sugarcane tops to the di-et of meat rabbits had no significant effect on the average daily feed intake and survival rate of meat rabbits(P＞0.05),but significantly affected average daily gain and feed to gain ratio(P＜0.05);the average daily gain and feed to gain ratio in group B were not significantly different from group A(P＞0.05),but with dieta-ry sugarcane tops proportions increasing,the average daily gain significantly decreased(P＜0.05),the feed to gain ratio significantly increased(P＜0.05).2)Compared with group A,adding different proportions of sugar-cane tops to the diet of meat rabbits had no significant effect on total protein,albumin,urea nitrogen,total cholesterol contents and alkaline phosphatase,alanine transaminase activities in the serum of meat rabbits(P＞0.05),but had a significant effect on serum glucose and triglycerides contents(P＜0.05);with dietary sugar-cane tops proportions increasing,the contents of serum glucose and triglycerides contents significantly increased(P＜0.05).3)Compared with group A,adding different proportions of sugarcane tops to the diet of meat rab-bits had a significant effect on rabbit slaughter performance(P＜0.05),but had no significant effect on the muscle chemical composition,meat color,pH45 min,pH24 h,and drip loss of dorsal and leg muscles of meat rabbits(P＞0.05);with dietary sugarcane tops proportions increasing,the half carcass weight and full carcass weight of meat rabbits showed a significant decrease trend(P＜0.05),but there was no significant difference in full carcass weight rate(P＞0.05).In conclusion,replacing alfalfa with 33％sugarcane tops in the diet of meat rabbits has no adverse effects on growth performance,serum biochemical indexes,slaughter performance and meat quality of meat rabbits.[Chinese Journal of Animal Nutrition,2024,36(1):528-536]
维普
万方数据