小麦替代玉米对生长育肥猪生长性能、养分消化率及经济效益的影响

本试验旨在研究在生长育肥猪日粮中添加小麦替代玉米,对猪的生长性能、养分消化率的影响,并对其经济效益进行分析,探讨适宜的替代量。试验选用平均体重为30.12±1.28kg的（杜×长×大）三元杂交猪150头,随机分成5组,每组10头×3个重复。Ⅰ组为对照组,饲喂玉米-豆粕型基础饲粮;试验Ⅱ、Ⅲ、Ⅳ、Ⅴ组为小麦替代组,用小麦分别替代基础日粮中25%、50%、75%和100%的玉米,并在其中分别添加0.015%、0.020%、0.025%和0.030%的复合酶制剂（阿拉伯木聚糖酶、β-葡聚糖酶、木聚糖酶等）。试验期67天,其中预饲期7天,正试期60天。结果表明用小麦替代适当比例的玉米对生长猪的生产性能无影响,具有一定可行性;同时在添加复合酶制剂的情况下,小麦等量替代50%的玉米养殖效果最佳。

Effects of Corn Replaced with Wheat on Growth Performance,Nutrient Digestibility and Eco nomic Benefits in Growing and Fattening Pigs

The experiment was conducted to investigate the effects of wheat substituting for corn diets on growth performance and nutrients digestion of growing-finishing pigs, and analyze the economic benefit, so as to explore the suitable additive amount of wheat in swine diets. 150 healthy crossed-bred （Duroc × Landrace ×Yorkshine） finishing pigs with similar weight （ 30.12±1.28kg） were randomly assigned to 5 treatments, 3 replicates per treatment of 10 pigs, The first group（ Ⅰ ） was control one with corn-soybean meal-based diets and the remaining four groups were experiment ones supplementing 25%, 50%, 75% and 100% wheat substituting for corn diets respectively, with extra added wheat enzyme with 0.015%, 0.020%, 0.025% and 0.030% in each treatment group respectively. The experiment lasted for 67 days, including a 7-day adaptation duration and a 60-day trial period. The results showed that it is closed between wheat diets substituting for corn and corn diets in production performance with adding compound enzyme preparation based on the analysis of physiological and biochemical indexes and economic benefit So this alternative is feasible and wheat substituting for corn equal 50% is best for breeding.