摘要
试验研究日粮中限制赖氨酸水平对育肥猪生长性能和血液尿素氮的影响。试验选择健康的体重为(59.92±0.99)kg的杂交(约克夏×长白×杜洛克)育肥猪60头,随机分为3个处理组,每个处理组5个重复,每个重复4头猪,进行了8周的饲养试验。分为对照组是基础日粮中养分参照NRC(1998)饲养标准、日粮中赖氨酸水平限制15%和限制30%的3个处理组。结果表明:试验组在育肥期(0~8周)和育肥前期(0~4周),赖氨酸水平的降低,试验末重、平均日增重、平均日采食量(P〈0.01)、饲料效率呈显著降低趋势(P〈0.05)。对照组与试验组之间差异显著(P〈0.05)。育肥后期(5~8周)血液尿素氮的浓度有显著性差异(P〈0.01)。
This experiment was to study the effect of dietary lysine restriction on growth performance and serum urea nitrogen in finishing pigs. 60 hybrid fattening pigs (York summerXLandracexDuroc) with the initial body weight of (59.92+0.99) kg were randomly divided into 3 groups with 5 repetitions, each repetition had 4 pigs, the experiment lasted 8 weeks. The 3 groups were basic diet formulated by NRC(1998), dietary with lysine restriction level of 15% anti 30%,respectively. The result indicated that, in the fattening time(0-8 week) and the earlier finishing period(0-4 week), with the decrease of di- etary lysine level, the final body weight, average daily weight gain, average daily feed intake(P〈0.01) and feed efficiency of experimental groups were significantly decreased(P〈0.05). The blood urea nitro- gen density has the significant differences in the latter finishing period(5-8 week).
出处
《饲料工业》
北大核心
2012年第23期24-26,共3页
Feed Industry
关键词
限制赖氨酸
生长性能
血液尿素氮
育肥猪
restriction lysine
growth performance
blood urea nitrogen
finishing pig