降低日粮中锌水平对生长猪的生产性能及血清生化指标的影响

发布时间：2018-11-26 12:26

【摘要】：试验旨在研究降低日粮中锌水平对生长猪的生长性能及血清生化指标的影响。选取体重约为50 kg的杜×(长×大)三元杂交健康去势肉猪48头,按照单因素完全随机区组试验设计分为3组,每组4个重复,每个重复4头猪,分别饲喂锌添加量为90、40和20 mg/kg的日粮,试验期为28 d。结果表明:(1)降低日粮中锌水平对生长猪的末体重、平均日采食量、平均日增重和料肉比无显著影响(P0.05);(2)低锌组的血清锌含量显著低于中锌组和高锌组(P0.05),分别低54.74%和53.76%,降低日粮中锌水平对生长猪血清中白蛋白和碱性磷酸酶的含量无显著影响(P0.05);(3)降低日粮中锌的水平对皮炎发生率和腹泻率无显著影响(P0.05);(4)低锌组的粪中锌含量显著低于中锌组和高锌组(P0.05),分别低16.64%和22.08%,降低日粮中锌水平对生长猪的锌表观全肠道消化率无显著影响(P0.05)。
[Abstract]:The aim of the experiment was to study the effect of reducing dietary zinc level on growth performance and serum biochemical indexes of growing pigs. A total of 48 healthy ovariectomized pigs with a weight of 50 kg were selected and divided into 3 groups according to a single factor complete randomized block design, with 4 replicates in each group and 4 pigs in each replica. The diets fed with zinc supplementation of 90,40 and 20 mg/kg were fed for 28 days. The results showed that: (1) there were no significant effects on the end weight, average daily intake, average daily gain and feed / meat ratio of growing pigs by reducing dietary zinc level (P0.05); (2) the serum zinc content in the low zinc group was significantly lower than that in the middle zinc group and the high zinc group (P0.05), which was 54.74% and 53.76% lower than that in the middle zinc group and the high zinc group, respectively. There was no significant effect on serum albumin and alkaline phosphatase content in growing pigs by reducing dietary zinc level (P0.05). (3) there was no significant effect on the incidence of dermatitis and diarrhea rate by reducing the level of zinc in diet (P0.05). (4) the zinc content in feces of low zinc group was significantly lower than that of middle zinc group and high zinc group (P0.05), which were 16.64% and 22.08 lower than those of middle zinc group and high zinc group, respectively. There was no significant effect on total intestinal zinc digestibility of growing pigs by reducing dietary zinc level (P0.05).
【作者单位】：安佑生物科技集团股份有限公司;
【分类号】：S828.5

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