多营养源饲粮对生长育肥猪生长性能、养分表观消化率及肉品质的影响

发布时间：2018-08-19 18:08

【摘要】：本试验旨在研究多营养源饲粮对生长育肥猪生长性能、养分表观消化率及肉品质的影响,探索使用非常规饲料原料配制饲粮的可能性。试验选取日龄相近、体重在(41.06±1.43)kg的"杜长大"生长猪48头,随机分配到2个组,分别饲喂玉米-豆粕型基础饲粮(对照组)和多营养源饲粮(试验组),每组12个重复,每个重复2头猪。生长阶段试验期为42 d,育肥阶段待猪体重达120 kg时,每个组选择5头猪进行屠宰并测定肉品质。结果表明:1)与对照组相比,试验组试验猪平均日采食量提高了7.76%(P0.05),平均日增重、料重比和能量摄入量均无显著差异(P0.05);2)与对照组相比,试验组钙、磷、能量、粗蛋白质、粗灰分和干物质的表观消化率显著降低(P0.05),粗脂肪的表观消化率无显著差异(P0.05);3)与对照组相比,饲喂多营养源饲粮显著提高了试验猪血清谷丙转氨酶的活性(P0.05),但对其余血清生化指标均无显著影响(P0.05);4)与对照组相比,饲喂多营养源饲粮对猪肉品质及背最长肌肌内脂肪和蛋白质含量无显著影响(P0.05)。由此可知:在本试验条件下,饲喂以非常规饲料原料为主的多营养源饲粮降低了生长育肥猪营养物质表观消化率,但对其生长性能和肉品质无负面影响。
[Abstract]:The purpose of this experiment was to study the effects of multi-source diets on growth performance, apparent nutrient digestibility and meat quality of growing and fattening pigs, and to explore the possibility of using unconventional feed raw materials to prepare diets. 48 growing pigs with a body weight of (41.06 卤1.43) kg were randomly assigned to two groups, which were fed corn-soybean meal basal diet (control group) and multi-nutrient diet (experimental group), with 12 replicates in each group. Two pigs per duplicate. The experiment period of growth stage was 42 days, and when the weight of pig in fattening stage was 120 kg, 5 pigs were selected for slaughter and meat quality was measured in each group. The results showed that compared with the control group, the average daily feed intake of the test group increased by 7.76% (P0.05), the average daily gain, the ratio of feed to weight and the energy intake of the test group were not significantly different from those of the control group (P0.05), compared with the control group, calcium, phosphorus, energy and crude protein in the experimental group were increased by 7.76% (P0.05). The apparent digestibility of crude ash and dry matter decreased significantly (P0.05), but the apparent digestibility of crude fat was not significantly different (P0.05) compared with the control group. The activity of serum alanine aminotransferase was significantly increased by feeding multi-nutrient diet (P0.05), but there was no significant effect on the other serum biochemical indexes (P0.05) compared with the control group. There was no significant effect on the quality of pork and the content of fat and protein in longissimus dorsi muscle (P0.05). It can be seen that the apparent digestibility of nutrients in growing and fattening pigs was decreased by feeding multi-source diets with unconventional feedstuff, but there was no negative effect on growth performance and meat quality of growing and fattening pigs.
【作者单位】：四川农业大学动物营养研究所动物抗病营养教育部重点实验室;
【基金】：基金项目:国家生猪技术产业体系(CARS-36) 生猪养殖全期关键技术研究与应用(2013NC0053)
【分类号】：S828.5

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