摘要
[目的]研究颗粒日粮中添加柠条对滩羊生长性能、血液生化指标、瘤胃发酵及羊肉品质的影响。[方法]选择体重相近的健康去势滩羊20只,随机分成两组,每组10只;对照组饲喂含有10%菊花粕的颗粒日粮,试验组饲喂含有6%柠条和4%菊花粕的颗粒日粮;开展周期为50天的育肥试验,测定滩羊的生长性能指标;育肥试验结束后,测定滩羊血液生化指标;屠宰后测定滩羊的屠宰性能指标,并取瘤胃液测定瘤胃发酵指标;取背腰最长肌,测定粗脂肪、粗蛋白、氨基酸含量以及脂肪酸组成。[结果]试验组和对照组滩羊的初始体重和终末体重无显著(P>0.05)差异;试验组平均日增重较对照组降低10.84%,差异不显著(P>0.05);对照组平均日采食量显著(P<0.05)高于试验组;两组试验羊料肉比相同。试验组滩羊血清中的总蛋白含量显著(P<0.05)高于对照组,其他血液生化指标无显著(P>0.05)差异。对照组滩羊屠宰率比试验组高1.59%,差异不显著(P>0.05);两组试验羊肝脏重、肝脏指数、心脏和肺脏重、心脏和肺脏指数差异不显著(P>0.05)。试验组滩羊瘤胃液中丁酸浓度显著(P<0.05)高于对照组,异戊酸浓度显著(P<0.05)低于对照组。对照组和试验组滩羊背腰最长肌中分别检测出18种和20种脂肪酸,粗蛋白含量分别为17.51%和20.92%,粗脂肪含量分别为3.22%和3.89%,总氨基酸含量分别为13.25%和14.09%。[结论]颗粒日粮中加入柠条对滩羊生长性能、血液生化指标和屠宰性能影响不明显,但可改善瘤胃发酵,丰富羊肉中脂肪酸组成及含量,增加肉中粗蛋白、粗脂肪和氨基酸含量。
[Objective]To assess the effects of adding Caragana korshinskii in pelleted diet on growth performance,blood biochemical indicators,ruminal fermentation and mutton quality of Tan sheep.[Method]A total of 20 healthy castrated Tan sheep with similar weights were selected and randomly divided into 2 groups with 10 individuals for each group.The control group was fed with pelleted diet containing 10%chrysanthemum meal,and the experimental group was fed with pelleted diet containing 6%Caragana korshinskii and 4%chrysanthemum meal instead.A 50-day fattening experiment was conducted,and the growth performance indicators of the Tan sheep were determined;after the fattening experiment,the blood biochemical indexes were measured;the slaughter performance indicators were evaluated,and the ruminal fluid samples were collected after slaughter to assess the ruminal fermentation indicators;the contents of crude fat,crude protein and amino acids as well as the contents and composition of fatty acids in longissimus dorsi muscle were determined.[Result]No significant(P>0.05)differences in initial weights and final weights in the fattening experiment between the experimental group and the control group were observed;while the average daily gain of the experimental group was reduced by 10.84%compared with the control group,no significant difference was found(P>0.05);the average daily feed intake of the control group was significantly(P<0.05)higher than that of the experimental group;the two groups had the same feed to gain ratio.The experimental group had significantly(P<0.05)higher serum total protein concentration compared with the control group,and there were no significant(P>0.05)differences in the other tested blood biochemical indexes.The slaughter rate of the control group was 1.59%higher than that of the experimental group,but no significant(P>0.05)difference was observed;there were no significant(P>0.05)differences in liver weights,liver indexes,heart and lung weights and heart and lung indexes between the experimental grou
作者
马宁
许迟
李涛
叶均安
孔立洋
赵元
李博宁
赵莉
吴仙花
何立荣
MA Ning;XU Chi;LI Tao;YE Jun-an;KONG Li-yang;ZHAO Yuan;LI Bo-ning;ZHAO Li;WU Xian-hua;HE Li-rong(Ningxia Dabeinong Technology Industrial Co.,Ltd.,Yinchuan750200,China;Zhejiang University,Hangzhou310058,China)
出处
《畜牧与饲料科学》
2021年第3期14-20,38,共8页
Animal Husbandry and Feed Science
基金
宁夏回族自治区重点研发计划项目“基于区域资源开发滩羊系列颗粒饲料及其产业化应用技术与示范”(2019BBF02002)。
关键词
滩羊
柠条
生长性能
血液生化指标
瘤胃发酵
Tan sheep
Caragana korshinskii
growth performance
blood biochemical indicators
ruminal fermentation
