发酵构树饲料对断奶仔猪生长性能、养分表观消化率和血清生化指标的影响

本试验旨在研究饲粮中不同比例发酵构树饲料对断奶仔猪生长性能、养分表观消化率和血清生化指标的影响。试验选取35日龄、体重为(7.4±1.1)kg的健康断奶仔猪216头,随机分为Ⅰ(对照)、Ⅱ、Ⅲ、Ⅳ组,每组3个重复,每个重复18头仔猪。其中,Ⅰ组饲喂基础饲粮;Ⅱ组饲喂3%发酵构树饲料+97%基础饲粮;Ⅲ组饲喂6%发酵构树饲料+94%基础饲粮;Ⅳ组饲喂9%发酵构树饲料+91%基础饲粮。预试期5 d,正试期25 d。结果表明:1)与Ⅰ组相比,Ⅱ、Ⅲ、Ⅳ组断奶仔猪的腹泻率显著降低(P<0.05),各组间平均日采食量(ADFI)、平均日增重(ADG)和料重比(F/G)无显著差异(P>0.05)。2)与Ⅰ组相比,Ⅱ、Ⅲ、Ⅳ组粗蛋白质(CP)、粗脂肪(EE)、钙(Ca)和磷(P)表观消化率均显著降低(P<0.05)。3)Ⅲ组血清总胆固醇(TC)含量较Ⅰ、Ⅱ、Ⅳ组显著降低(P<0.05);各组间其他血清生化指标无显著差异(P>0.05)。4)各组间血清超氧化物歧化酶(SOD)活性、丙二醛(MDA)含量及总抗氧化能力(T-AOC)无显著差异(P>0.05)。综上所述,饲粮中不同比例发酵构树饲料可以显著降低断奶仔猪的腹泻率,未对生长性能、血清生化指标和抗氧化指标产生不利影响,其中6%的替代比例效果最佳。

Effects of Fermented Broussonetia papyrifera Feed on Growth Performance,Nutrient Apparent Digestibility,Serum Biochemical Indexes of Weaned Piglets

The purpose of this experiment was to study the effects of different proportion fermented Broussonetia papyrifera feed to the diet on the growth performance,nutrient apparent digestibility and serum biochemical indexes of weaned piglets.In the experiment,a total of 216 healthy weaned piglets with body weight of(7.4±1.1)kg were randomly divided into 4 groups,namely groupsⅠ,Ⅱ,ⅢandⅣ.Each group was set with 3 replicates,and 18 pigs for each replicate.The groupⅠwas control group,pigs were fed a basal diet;pigs in the groupⅡwere fed 3%fermented Broussonetia papyrifera feed+97%basal diet;pigs in the groupⅢwere fed 6%fermented Broussonetia papyrifera feed+94%basal diet;pigs in the groupⅣwere fed 9%fermented Broussonetia papyrifera feed+91%basal diet.The experiment lasted for 25 days after 5 days per-experiment.The results showed as follows:1)the diarrhea rate of weaned piglets in groupsⅡ,ⅢandⅣwas significantly lower than that in the groupⅠ(P<0.05);fermented Broussonetia papyrifera feed did not significantly affect the average daily feed intake(ADFI),average daily gain(ADG)and feed to gain ratio(F/G)(P>0.05).2)Compared with groupⅠ,the apparent digestibility of crude protein(CP),ether extract(EE),calcium(Ca)and phosphine(P)in groupsⅡ,ⅢandⅣall showed a significant decrease(P<0.05).3)The serum total cholesterol(TC)content in groupⅢwas significantly lower than that in groupsⅠ,ⅡandⅣ(P<0.05),while there was no significant difference in other biochemical indexes among groupsⅠ,Ⅱ,ⅢandⅣ(P>0.05).4)The content of malondialdehyde(MDA),the activity of superoxide dismutase(SOD)and the total antioxidant capacity(T-AOC)in serum had no significant differences among groups(P>0.05).In summary,fermented Broussonetia papyrifera feed can significantly reduce the diarrhea rate of weaned piglets,and won’t have a negative effects on ADFI,ADG,F/G and serum biochemical indexes,and the substitution amount of 6%has the best effect.