哺乳期犊牛开食料中原料对其系酸力和pH的影响  

Effects of the Ingredients on Acid Binding Capacity and pH of Calves Starter Ration

作　　者：屠焰[1] 刁其玉[1] 冯珊珊[2] 周怿[1] 云强[1] 

机构地区：[1]中国农业科学院饲料研究所,北京100081 [2]北京农学院,北京100226

出　　处：《动物营养学报》2010年第1期63-69,共7页CHINESE JOURNAL OF ANIMAL NUTRITION

基　　金：国家科技支撑计划子课题--奶牛营养调控及高效饲养技术研究(2006BAD04A03-03)

摘　　要：本文从犊牛开食料原料的配比和系酸力、pH入手,研究其对开食料系酸力、pH的影响规律。选用北方地区犊牛开食料常用的9类原料,以正交试验方法配制成开食料,测定原料、开食料的系酸力和pH,并采用多元回归方法进行统计分析。结果表明,石粉系酸力极高而食盐最低,植物性饲料原料系酸力由高到低依次为大豆粕、麸皮、玉米;矿物质类饲料原料为碱性,玉米、麸皮、大豆粕的pH在5.65～5.92之间,维生素预混料和微量元素预混料的pH较低;各原料对开食料都有显著影响(P<0.05)。在本试验设计范围内,配制犊牛开食料时,仅从开食料系酸力20～25 mmol/100 g为宜角度考虑确定的各原料的适宜添加比例为:大豆粕≤20%、麸皮0～10%、乳清粉≤20%、磷酸氢钙≤2%、石粉≤2%、食盐0～1.0%、维生素预混料0～0.04%。犊牛开食料系酸力、pH与原料配比和系酸力、pH之间存在有显著的多元线性相关关系。This experiment was conducted to study on the effects of the content and acid binding capacity （ABC） or pH of ingredients on the ABC or pH of calves starter ration. Nine feed raw ingredients which were ordinarily used in the northern China were chosen, and mixed to calf starter rations based on L27 （313） orthogonal test table. The ABC and pH of the ingredients and starter rations were determined, and then multiple regression method was used to analyze the data. The results showed that, 1） the ABC of limestone was highest, meanwhile that of NaC1 was lowest, and the order of ABC from high to low was soybean meal, wheat bran, corn in plant feed ingredients; 2） the pH of mineral ingredients was alkaline, and that of corn, wheat bran and soybean meal was 5.65 to 5.92. The pH of the vitamin premix and mineral premix were very low; 3） all the ingredients had significant effects on the ABC and pH of starter ration （P〈0.05）. These results indicated that in the range of the experiment design, the suitable contents of ingredients in calves starter ration were： soybean meal≤20%, wheat bran 0-10%, whey powder≤20%, CaHPO4≤2%, limestone≤2%, NaCl 0-1.0%, vitamin premix 0-0.04% while the optimum ABC of calves starter ration was destined for 20-25 mmol/100 g. There was significant multiple liner correlation between the ABC or pH of calves starter ration and content, ABC or pH of ingredients.

关 键 词：犊牛 开食料 系酸力 PH 数学模型 

分 类 号：S823[农业科学—畜牧学] S816.15[农业科学—畜牧兽医]