α-酮戊二酸和大蒜素对生长猪生长发育及养分表观消化率的影响
发布时间:2018-08-09 08:35
【摘要】:本试验旨在研究α-酮戊二酸(AKG)和大蒜素对生长猪生长性能、养分表观消化率、血清生化指标以及肠道形态结构的影响。选用40头初始平均体重为(30.64±1.35)kg的健康三元(杜×长×大)杂交生长猪,按体重相近、性别比例相同原则随机分为5组,每组8个重复,每个重复1头猪。5组试验猪分别饲喂无抗基础饲粮(对照组)、无抗基础饲粮+25 mg/kg抗生素(Ⅰ组)、无抗基础饲粮+1%AKG(Ⅱ组)、无抗基础饲粮+0.5%大蒜素(Ⅲ组)、无抗基础饲粮+1%AKG+0.5%大蒜素(Ⅳ组)。预试期7d,正试期21d。结果表明:1)与对照组相比,Ⅰ组和Ⅳ组生长猪的平均日增重分别提高了10.80%和9.91%,但差异不显著(P0.05)。2)与对照组相比,Ⅱ组钙的表观消化率显著提高(P0.05),Ⅳ组粗蛋白质、钙和磷的表观消化率显著提高(P0.05),且Ⅳ组较Ⅰ组显著提高了磷的表观消化率(P0.05)。3)与对照组相比,Ⅱ组血清免疫球蛋白G(IgG)含量显著提高(P0.05);Ⅲ组血清甘油三酯(TG)含量显著降低(P0.05);Ⅳ组血清总胆固醇(TCHO)和TG含量显著降低(P0.05),血清碱性磷酸酶(AKP)、谷草转氨酶(AST)和谷丙转氨酶(ALT)活性及血清免疫球蛋白A(IgA)、IgG含量显著提高(P0.05)。与Ⅰ组相比,Ⅳ组血清TCHO和TG含量有降低趋势(P0.05),血清AST和ALT活性显著提高(P0.05)。4)与对照组相比,Ⅳ组回肠绒毛高度及空肠和回肠的绒毛高度/隐窝深度值显著提高(P0.05)。5)与对照组相比,Ⅳ组回肠中杯状细胞和淋巴细胞数目显著增加(P0.05)。综上,无抗饲粮中联合添加1%AKG和0.5%大蒜素可通过改善肠道形态结构,提高对粗蛋白质、钙和磷等养分的消化吸收能力,促进肠道健康,进而改善生长猪的生长性能。
[Abstract]:The effects of 伪 -ketoglutarate (AKG) and allicin on growth performance, apparent nutrient digestibility, serum biochemical indexes and intestinal morphology of growing pigs were studied. Forty crossbred pigs with an initial average body weight of (30.64 卤1.35) kg were randomly divided into 5 groups, with 8 replicates in each group, according to the principle of similar body weight and the same sex ratio. The test pigs in 5 groups of repeated pigs were fed with basal diet (control group), 25 mg/kg antibiotics (group 鈪,
本文编号:2173526
[Abstract]:The effects of 伪 -ketoglutarate (AKG) and allicin on growth performance, apparent nutrient digestibility, serum biochemical indexes and intestinal morphology of growing pigs were studied. Forty crossbred pigs with an initial average body weight of (30.64 卤1.35) kg were randomly divided into 5 groups, with 8 replicates in each group, according to the principle of similar body weight and the same sex ratio. The test pigs in 5 groups of repeated pigs were fed with basal diet (control group), 25 mg/kg antibiotics (group 鈪,
本文编号:2173526
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