不同饲喂频率对辽西驴生长性能和屠宰性能的影响  

Effects of different feed frequency on growth performance and slaughterperformance of Liaoxi donkey

作　　者：吕丹娜[1] 孙亚波 张晓鹰 黄卫国 王春燕 杨文凯 郑旭 刘玉英 LYU Danna;SUN Yabo;ZHANG Xiaoying;HUANG Weiguo;WANG Chunyan;YANG Wenkai;ZHENG Xu;LIU Yuying(Liaoning Agricultural College,Yingkou 115009,China;Modern Agricultural Production Base Construction Engineering Center of Liaoning,Liaoyang 111000,China;Jianping County Animal Husbandry Technology Extension Station,Jianping 122400,China)

机构地区：[1]辽宁农业职业技术学院,辽宁营口115009 [2]辽宁省现代农业生产基地建设工程中心,辽宁辽阳111000 [3]建平县畜牧技术推广总站,辽宁建平122400

出　　处：《黑龙江畜牧兽医》2021年第18期130-133,共4页Heilongjiang Animal Science And veterinary Medicine

基　　金：辽宁省科技厅“建平县肉驴产业科技特派服务行动”项目“辽西驴选育及生产关键配套技术”“辽西驴品种种系发生、分子鉴定及其保种的研究”(2019416032;2018202001)。

摘　　要：为了研究不同饲喂频率对辽西驴生长性能及屠宰性能的影响,试验采用单因素随机区组试验设计,将体况良好的6月龄、体重为(117.83±12.39)kg的辽西驴18匹随机分为3组,每组6匹,试验Ⅰ、Ⅱ、Ⅲ组每天分别饲喂2,3,4次精饲料,预试期10 d,正试期170 d,测定生长性能指标(平均日增重、平均日采食量、料重比)和屠宰性能指标(活体重、皮重、胴体重、骨重、净肉重、屠宰率、皮重率、骨重率、活体净肉率、胴体净肉率、器官指数)。结果表明:试验Ⅱ组的平均日增重显著高于试验Ⅰ组和试验Ⅲ组(P<0.05);各组间平均日采食量、料重比无显著差异(P>0.05),但试验Ⅱ组料重比最低。试验Ⅱ组皮重和皮重率显著高于试验Ⅰ组和试验Ⅲ组(P<0.05),各组间其他屠宰指标差异不显著(P>0.05)。试验Ⅱ组和试验Ⅲ组的心脏指数显著高于试验Ⅰ组(P<0.05),各试验组间的其他脏器指数无显著差异(P>0.05)。说明辽西驴日粮的饲喂频率为每天3次时,平均日增重最高,料重比最低,皮重和皮重率最高,心脏指数最高,效果最好,且不影响辽西驴的其他屠宰性能指标。In order to investigate the effects of different feed frequency on growth performance and slaughter performance of Liaoxi donkeys,a single factor design was adopted in this experiment.Eigtheen six-month old Liaoxi donkeys with an body weight(117.83±10.39)kg in good condition were selected and randomly divided into three groups(six donkeys per group).The animals in the trial groupⅠ,Ⅱ,Ⅲwere fed with concentrated feed two,three,four times a day,respectively.The pre-feeding period was 10 d,and the formal experimental period was 170 d.The growth performance indexes(average daily weight gain,average daily feed intake and feed-to-gain ratio)and slaughter performance indexes(live weight,skin weight,carcass weight,bone weight,net meat gain,slaughter percentage,skin weight percentage,bone weight percentage,live net meat percentage,carcass net meat percentage and organ indexes)were measured.The results showed as follows:the average daily weight gain in the trial groupⅡwas significantly higher than those in the groupⅠand groupⅢ(P<0.05),There were no significant differences in average daily feed intake and feed-to-gain ratio among three groups(P>0.05),but the feed-to-gain ratio of the trial groupⅡwas the lowest.Skin weight and skin weight percentage in the trial groupⅡwere significantly higher than those in the groupⅠand groupⅢ(P<0.05),but there were no significant differences in other slaughter indexes among three groups(P>0.05).The cardiac index in the trail groupⅡand trial groupⅢwere significantly higher than that in the trial groupⅠ(P<0.05),but there was no significant difference in other organ indexs among three trial groups(P>0.05).The results showed that when the feed frequency of Liaoxi donkeys was three times a day,the average daily weight gain was highest,the feed-to-gain ratio was the lowest,the skin weight and skin weight percentage were the highest and the heart index was highest,the effect was the best,and the other slaughter performance indexes of the Liaoxi donkey were not affected.

关 键 词：饲喂频率 辽西驴 生长性能 屠宰性能 器官指数 

分 类 号：S822[农业科学—畜牧学]