摘要
文章旨在研究挤压膨化菜籽粕对育肥猪生长性能、免疫功能及养分消化率的影响。试验选取45头体重相近[(82.15±2.09)kg]的健康育肥猪,随机分为3组,每组3个重复,每个重复5头。豆粕组采用豆粕作为蛋白饲料,其余2组分别用50%、100%挤压膨化菜籽粕等氮替代豆粕,预饲期7d,正试期30d。结果表明:(1)与豆粕组相比,100%替代组平均日增重显著降低9.41%(P<0.05),料重比显著升高9.12%(P<0.05)。(2)50%替代组、100%替代组免疫球蛋白G(IgG)、免疫球蛋白M(IgM)含量显著低于豆粕组(P<0.05)。100%替代组肿瘤坏死因子α(TNF-α)含量显著高于豆粕组(P<0.05)。50%替代组、100%替代组钙、磷消化率均显著低于豆粕组(P<0.05)。由此可见,在本试验条件下,用50%挤压膨化菜籽粕替代豆粕,对育肥猪生长性能无显著影响,但要注意免疫功能和养分消化率下降问题。
To investigate the effects of extruded rapeseed meal on the growth performance,immune function and nutrient digestibility of fattening pigs,45 healthy fattening pigs with similar body weight(82.15±2.09 kg)were randomly divided into 3 groups,with 3 replicates in each group and 5 pigs per replicate.The soybean meal group used soybean meal as the protein feed,while the other two groups were respectively replaced with 50%and 100%extruded rapeseed meal at the same nitrogen level.The pre-feeding period was 7 days and the formal feeding period was 30 days.The results showed that:(1)Compared with the soybean meal group,the average daily gain of the 100%replacement group was significantly reduced by 9.41%(P<0.05),and the feedto-weight ratio was significantly increased by 9.12%(P<0.05).(2)The contents of IgG and IgM in the 50%replacement group and the 100%replacement group were significantly lower than those in the soybean meal group(P<0.05).The content of TNF-αin the 100%replacement group was significantly higher than that in the soybean meal group(P<0.05).(3)Compared with the soybean meal group,the dry matter and crude protein digestibility of the 100%replacement group were significantly reduced(P<0.05).The digestibility of calcium and phosphorus in the 50%replacement group and the 100%replacement group was significantly lower than that in the soybean meal group(P<0.05).It can be seen that under the conditions of this experiment,replacing 50%of soybean meal with extruded rapeseed meal has no significant effect on the growth performance of fattening pigs,but attention should be paid to the decline in immune function and nutrient digestibility.
作者
刘广亮
LIU Guangliang(Heilongjiang Vocational College,Harbin,Heilongjiang Province 150100,China)
出处
《中国饲料》
北大核心
2025年第18期141-144,共4页
China Feed
关键词
挤压膨化菜籽粕
育肥猪
生长性能
免疫功能
养分消化率
extruded rapeseed meal
fattening pigs
growth performance
immune function
nutrient digestibility
