不同品种猪肌肉RNA/DNA比率与生产性能相关性研究  

Study on the Correlation between RNA/DNA Ratio and Performance in Different Swine Breeds

作　　者：赵彦光 杨国明 谢萍 贾俊静[2] 王佳峰[2] 

机构地区：[1]云南省畜牧兽医科学院,云南昆明650224 [2]云南农业大学动物营养与饲料科学重点实验室,云南昆明650201

出　　处：《家畜生态学报》2012年第2期37-42,共6页Journal of Domestic Animal Ecology

基　　金：云南省自然科学基金(2008ZC072M);国家农业科技成果转化资金(2009F30020525);云南省富民强县计划(2009EB070);云南省生猪产业技术体系资助

摘　　要：探索将RNA/DNA比率作为评定猪生长性能和饲料营养价值指标的可行性。选用了目前云南省4个杂交组合(PIC402×LY、PIC402×滇陆猪N1、D×LY、Y×滇陆猪N1)32头断奶仔猪,按品种分为4个组,每组设2个重复,每个重复4头猪。每组分两个饲养阶段(20～60kg,60～100kg),日粮及饲养管理方式一致。试验结束后屠宰,采集其背最长肌,测定RNA/DNA浓度比。结果表明:20～60kg阶段,猪肌肉RNA/DNA与其增重和采食量之间的相关性不显著(P>0.05),但与料重比有较显著的相关性(P<0.05),相关系数R均在0.85以上。60～100kg阶段,猪肌肉的RNA/DNA与猪的增重、采食量和料重比之间的有一定相关性,但都不显著(P>0.05)。在20～100kg阶段,猪肌肉的RNA/DNA与猪的增重和采食量之间的呈一定的相关性(P>0.05),但于其料重比之间相关性,相关系数在0.65以上。结论提示,猪肌肉RNA/DNA比率与猪增重及采食量、饲料转化效率有正相关,RNA/DNA比率越大,其增重及采食量越大,料重比越小;而且猪肌肉RNA/DNA比率有品种特异性,不同品种猪肌肉中的RNA/DNA比率值也不同。The study aims at exploring the feasibility of evaluating the growth performance of swines and the feed nutrient indexes by RNA/DNA ratio.32 piglets were selected from four combinations（PIC402×LY、PIC402×N1、D×LY、Y×N1）and randomly assigned to 4 treatments with 2 replicates and 4 piglets each replicate.The test was conducted in two steps（20-60 kg,60-100 kg）.After the trial,the pigs were slaughtered.The results showed that RNA/DNA ratio had a correlation with its weight gain and feed intake at 20-60 kg stage（P0.05）,but RNA/DNA ratio between each group and F/G ratio were of significant correlation（P0.05）,RNA/DNA ratio and pig weight gain,feed intake and F/G ratio had a certain relevance at the 60-100 kg stage,（P0.05）.RNA / DNA ratio and pig weight gain and feed intake was somewhat correlated（P0.05）,but the correlation coefficients of their F/G ratio was above 0.650 in the 20-100 kg stage.It could be concluded that RNA/DNA ratio had a positive correlation with the weight of growing pigs.The higher RNA/DNA ratio,the more body weight gain and feed intake,the smaller the F/G ratio is.In addition,the RNA/DNA ration in muscle is of breed specificity,which shows differently in different breeds.

关 键 词：猪 RNA/DNA比率 生产性能 

分 类 号：S811.6[农业科学—畜牧学]