摘要
为研究不同水平乳生肽在断奶仔猪日粮中的添加效果,选取180头长×大二元杂交仔猪,随机均分为3组,3组分别按如下处理:组1为对照组,饲喂基础日粮;组2和组3分别在基础日粮中添加300和500 mg/kg的乳生肽。试验期50 d,测定仔猪的生产性能,观察仔猪采食、毛色、排粪及其精神状态,记录腹泻、疾病和死亡等典型症状及异常情况等。结果表明,组2仔猪的平均末重、平均日增重、平均日采食量分别比对照增加了7.7%、14.0%和9.2%,而料肉比降低了4.2%,但差异均不显著;组3的平均末重、平均日增重、平均日采食量分别比对照增加了13.0%、20.9%和11.3%,而料肉比降低了7.9%,但差异均不显著;各项指标组3均好于组2,但差异也不显著。组2和组3的腹泻率、发病率以及死淘率极显著低于对照(P<0.01);组2和组3的腹泻率、发病率差异不显著,但组3的死淘率极显著低于组2(P<0.01)。
In order to study the effects of lactoferrin on weaned piglets, 180 Landrace×Yordshire weaned piglets were divided into 3 groups randomly, groups 1-3 were treated as follows： （1）basal diet; （2）hasal diet＋300 mg/kg lactoferrin; （3）basal diet ＋500 mg/kg lactoferrin. The trial lasted for 50 days. The samples were collected and growth performances, ingestion, hair col- or, feces and mental state were observed. The results showed that, the average final weight in group 2 and group 3 were greater than control group by 7.7% and 13.0% respectively; the average daily gain （ADG） in group 2 and group 3 were greater than control group by 14.0% and 20.9% respectively. The average daily feed intake （ADFI） in groups 2 and group 3 were greater than control group by 9.2% and 11.3% respectively. The F/G in group 2 and group 3 were lower than control group by 4.2%, 7.9% respectively. The diarrhea incidence, morbidity, incidence of a disease in group 2 and group 3 were significantly lower than control group（P〈0.01）. The diarrhea incidence, morbidity between group 2 and group 3 were not sig- nificant, but the incidence of a disease in group 3 was significantly lower than group 2（P〈0.01）.
作者
郑宝
于向春
ZHENG Bao YU Xiang-chun(College of Agriculture, Hainan University, Haikou 570228, Chin)
出处
《湖北农业科学》
2017年第3期506-507,519,共3页
Hubei Agricultural Sciences
基金
国家自然科学基金青年项目(31302011)
关键词
断奶仔猪
乳生肽
生产性能
weaned piglet
lactoferrin
growth performance
