饲料添加小麦秸秆生物质炭对肉鸡生长、屠宰性能和脂质代谢的影响

摘要

旨在研究小麦秸秆生物质炭对肉鸡生产性能、屠宰性能和脂质代谢的影响。试验选用100只22日龄、健康状况良好、体重670 g 左右的罗斯308肉鸡，随机分成4组。对照组饲喂基础日粮，试验组分别饲喂添加1％、5％和10％小麦秸秆生物质炭的基础日粮，试验期33 d。结果表明：1）与对照组相比，添加5％的小麦秸秆生物质炭肉鸡的平均日增重增加10.12％（P ＜0.05）；胸肌率提高23.42％（P ＜0.05）；添加5％和10％的小麦秸秆生物质炭肉鸡的腹脂率分别降低31.44％和23.02％（P ＜0.05）；试验组肉鸡的料重比均在一定程度上低于对照组，但无显著差异（P ＞0.05）；2）与对照组相比，添加5％的小麦秸秆生物质炭显著降低肉鸡血清总胆固醇含量（P ＜0.05）；试验组显著降低肉鸡血清Í酰甘油含量（P ＜0.05），但对肉鸡血清葡萄糖、低密度脂蛋白胆固醇和高密度脂蛋白胆固醇含量没有显著影响（P ＞0.05）；3）虽然添加小麦秸秆生物质炭增加了单位饲料成本，但添加1％和5％小麦秸秆生物质炭试验组每千克肉鸡增重饲料成本分别比对照组降低8％和6％。因此，饲料添加一定量的小麦秸秆生物质炭可以减少肉鸡腹脂沉积，降低血清总胆固醇和Í酰甘油含量，在一定程度上有助于改善肉鸡的屠宰性能和生产性能。%The effects of wheat straw bio -charcoal supplement to ration on growth,slaughter performance and lipid metabolism of broilers for the potential of bio -charcoal used as animal ration supplement were studied.Four random groups of 100 broilers each of Rose 308 (22 -day -old,body weight about 670 g each,in good health) were risen for 33 days respectively under treatments with 1%,5% and 10% wheat straw bio -charcoal supplement to their basal ration.Compared to the control group without bio -charcoal supplement,a 5% wheat straw bio -charcoal supplement significantly (P <0.05)increased the daily weight gain by 10.12% and the breast muscle rate by 23. 42%(P <0.05).However,broiler abdominal fat was reduced by 31.44% and 23.02%(P <0.05)under treatment of 5% and 10% wheat straw bio -charcoal supplement respectively.Furthermore,the treatment of 5% wheat straw bio -charcoal supplement significantly decreased the contents of serum total cholesterol (P <0.05)compared to the control group.Moreover,the contents of serum triacylglycerol of the tested broilers was all significantly (P <0.05) decreased,and the contents of serum glucose,high -density lipoprotein -cholesterol and low -density lipoprotein -cholesterol did not chang under the supplement treatments,over the control.Finally,the overall cost of feed per kilo-gram of broilers was significantly (P <0.05)decreased by 8% and 6% over the control,respectively under treat-ments of 1% and 5% wheat straw bio -charcoal supplement,which slightly increased ration cost.Therefore,a sup-plement of 5% wheat straw bio -charcoal to basal ration could be a potential to improve health breeding,slaughter performance and growth performance of broiler.