摘要
本试验通过50-75、75-100 kg 2个阶段生长肥育猪的饲养试验,比较研究了80%赖氨酸硫酸盐（80赖氨酸）、70%赖氨酸硫酸盐（70赖氨酸）和98%赖氨酸盐酸盐（98赖氨酸）对猪生长性能和血液生化指标的影响。试验选取72头杜×长×大三元杂交肥育猪（57.35±6.02）kg,随机分为3个处理,每个处理6个重复,每个重复4头猪,公、母各半。各处理组日粮营养水平相同,但添加赖氨酸分别来源于80赖氨酸（80组）、70赖氨酸（70组）和98赖氨酸（98组）。结果表明：在50-75 kg生长阶段,与70组和98组相比,80组平均日增重分别提高3.12%和2.73%,饲料转化效率分别提高3.32%和2.24%。在75-100 kg肥育阶段,与70组相比,80组平均日增重和饲料转化效率分别提高4.88%和0.89%;与98组相比,80组平均日增重提高2.76%,但饲料转化效率降低1.52%。75-100 kg阶段血液生化指标分析结果表明,70组苯丙氨酸含量显著升高（P〈0.05）,98组与80组相比,血清蛋氨酸和缬氨酸含量显著升高（P〈0.05）,各处理组血清尿素氮差异不显著（P〉0.05）。
The objectiv e of this study was to compare dietary 80% L-lysine sulphate（80% L-lysine） and 70% L-lysine sulphate（70% L-lysine） and 98% L-lysine hydrochloride supplementation（98% L-lysine） on performance and serum biochemical index in 50-75 kg and 75-100 kg growing and finishing pigs. A total of 72 growing finishing pigs,with the body weight of 57.35 ±6.02 kg（ Duroc ×Landrace ×Large White）, were randomly assigned to three treatments with 6 repeats in each treatment and 4 pigs in each repeat（half male and half female）. Pigs were fed diets with the same nutrient levels with lysine from 80% L-lysine sulphate（80% L-lysine） and 70% L-lysine sulphate（70% L-lysine） and 98% L-lysine hydrochloride（98% L-lysine）, respectively. In the period of 50 -75 kg body weight,compared with 70% L-lysine and 98% L-lysine, 80% L-lysine supplementation increased the average daily gain by3.12% and 2.73%, with the feed efficiency increasing by 3.32% and 2.24%. In the period of 75-100 kg body weight,compared with 70% L-lysine, the average daily gain and feed efficiency of pigs fed diet with 80% L-lysine supplementation were increased by 4.88% and 0.89%. Compared with 98% L-lysine, 80% L-lysine supplementation increased the average daily gain by 2.76%, but decreased the feed efficiency by 1.52%. During the whole growing-finishing period, compared with 70% L-lysine, the average daily gain and feed efficiency of pigs fed diet with 80% Llysine supplementation were increased by 3.93% and 1.33%. However, compared with 98% L-lysine, 80% L-lysine supplementation increased the average daily gain by 2.69%, but without effect on the feed efficiency. Compared with80% L-lysine and 98% L-lysine, 70% L-lysine group had a significant increment in serum phenylalanine concentration（P〈0.05）. The concentrations of serum methionine and valine in 98% L-lysine group were significantly higher than those in 80L-lysine group（P〈0.05）. Serum urea nitrogen concentrations were not significantly different among three groups.
出处
《中国畜牧杂志》
CAS
北大核心
2014年第21期27-31,共5页
Chinese Journal of Animal Science
基金
"十二五"国家科技支撑计划课题(2011BAD26B02)
关键词
赖氨酸硫酸盐
赖氨酸盐酸盐
生长性能
血清生化指标
肥育猪
L-lysinesulphate
L-lysinehydrochloride
growthperformance
serum biochemical index
growing-finishing pigs
