发酵菜籽粕对生长猪生长性能、机体抗氧化及免疫功能的影响

Effects of Fermented Rapeseed Meal on Performance,Antioxidant and Immunology Function of Growing Pigs

【目的】本试验旨在研究发酵菜籽粕对生长猪生长性能、机体抗氧化和免疫功能的影响。【方法】选用健康、体重相近的杜×长×大三元杂交生长猪64头,随机分成4组,每组4个重复,每重复4头猪。对照组饲喂玉米-豆粕型基础日粮,试验1、2、3组分别饲喂在基础日粮中添加发酵菜籽粕等氮替代2.5%、5%、7.5%豆粕的试验日粮。预试期7 d,正试期31 d。【结果】(1)试验各组平均日增重(ADG)和平均日采食量(ADFI)均高于对照组,试验3组ADG、ADFI和试验2组ADFI均显著高于对照组(P<0.05),各组生长猪料重比(F/G)无显著差异(P>0.05),试验3组F/G最低,较对照组低6.07%(P>0.05)。(2)试验3组血清超氧化物歧化酶(SOD)活性和总抗氧化能力(T-AOC)含量显著高于对照组(P<0.05),丙二醛(MDA)含量显著低于对照组(P<0.05)。各组血清谷胱甘肽过氧化物酶(GSH-Px)和过氧化氢酶(CAT)活性均无显著差异(P>0.05)。(3)试验3组血清免疫球蛋白A(Ig A)、免疫球蛋白G(Ig G)和白细胞介素2(IL-2)含量显著高于对照组(P<0.05)。各组血清免疫球蛋白M(Ig M)、白细胞介素1(IL-1)、白细胞介素6(IL-6)和肿瘤坏死因子-α(TNF-α)含量均无显著差异(P>0.05)。【结论】综上所述,在本试验条件下,发酵菜籽粕可提高生长猪生长性能,改善机体的抗氧化与免疫功能,且等氮替代7.5%豆粕效果显著。

[ Objective ] The experiments were conducted to evaluate the effects of fermented rapeseed meal on the performance, immunology and antioxidant function of growing pigs. [ Method] A total of 64 healthy crossbred （ Duroc ~ Landrace ~ Yorkshire） growing pigs with similar weight were randomly allotted to 4 dietary treatments with 4 replicates in each treatment and 4 pigs in each replicate. In 4 treatments, control group was corn-soybean basal diet, three experimental groups were fermented rapeseed meal replaced soybean meal in the basal diet at 2.5 % , 5 % ,7.5 % , respectively（ each dietary treatment was isonitrogenous）. [ Result] （i） The average daily gain （ADG） and average daily feed intake （ADFI） in experimental groups were higher than that in control group. ADG, ADFI in group 3 and ADFI in group 2 were significantly higher than that in control group （P 〈 O. 05 ）. There were no significant differences in ratio of feed to gain （F/G） among all treatment groups, but F/G in group 3 was the minimum, 6.07 % lower than the control group （ P 〉 0.05 ）. （ii） The serum superoxide dismutase （SOD）activity and total antioxidant capability（T-AOC） in group 3 were significantly higher than that in control group （P 〈 0.05 ）, the serum malondialdehyde（MDA） content was significantly lower than that in control group（ P 〈 0.05 ）. There were no significant differ- enees in serum glutathione peroxidase （GSH-Px） and catalase（CAT） activity among all groups （ P 〉 0.05 ）. （iii） The serum immunoglobulin A （ IgA）, immunoglobulin G（IgG） and interleukin-2 （IL-2） contents in group 3 were significantly higher than that in control group （ P 〈 0. 05 ）. There were no significant differences in serum immunoglobulin M （IgM） , interleukin-1 （ IL-1 ） ,inter]eukin-6 （IL-6） and tumour necrosis factor-σ （TNF-σ） contents among all groups （ P 〉 0. 05 ）. [ Conclusion ] In conclusion, under the condition of this trial, the fermented rapeseed meal can improve the performance, an- tioxidant and immunology function of growing pigs, and its optimal replacement level was 7.5 %.