酸化剂在仔猪饲料时中作用.ppt

酸化剂在仔猪饲料中的作用 张 奇 博士 英伟-纽埃特亚洲技术经理 比利时 酸化剂的历史 1960’s 1% lactic acid in drinking water 1970’s Fumaric acid as feed acidifier 1980’s Phosphoric acid based products 1990’s Lactic acid based, all organic acids mixture product 2000’s 为 什 么 以 乳 酸 为 主 为 什 么 以 乳 酸 为 主 左 旋 乳 酸 由 糖 发 酵 制 成 酸合剂之 功 效 什么是酸结合力 用0.1M HCL滴定10g有机物与90ml蒸馏水的悬浮液达到pH3.0时所需HCL溶液毫升数。 影响酸化剂效果的主要因素 A、不同饲料中的酸结合力大小不同。 B、凡是饲料中酸结合力高，则酸化剂提供的[H+]被饲料结合越多，影响酸化剂的效果越严重。 C、凡是饲料中酸结合力越低，则酸化剂提供的[H+]被饲料结合越少，影响酸化剂的效果越小。 常见谷物饲料的酸结合力 小猪常见蛋白原料酸结合力 矿物质的酸结合力 常见饲料原料系酸力 小猪饲料推荐的酸结合力 酸合剂之 抗 菌 机 理 ： 有 机 酸 解 离  有 机 酸 阴 离 子 + H+ 酸合剂之 抗 菌 机 理 酸合剂之 抗 菌 机 理 ： 使 用酸合剂之 优 点 健 康 仔 猪 胃 中 酸 浓 度 Microbial Quality  No growth detected in these pH-ranges The effect of ULTRACID LACon enteric pathogenic E. Coli Performance trial with ULTRACID LAC DRY Effect of ULTRACID LAC DRY on piglets in Belgium farm August 2001 TRIAL SET-UP Piglets weeaned at 27 days of age 2 treatments on basis of weight at weaning 2 pens per group with 16 piglets per pen Feed and drinking water provided ad libitum Two phase feeding: From weeaning until 2 weeks after weaning From 2 weeks after weaning until 6 weeks after weaning Control: feed without acidifiers Test:control feed + ULTRACID LAC DRY at 5 kg/ton Composition of prestarter feeds Composition of starter feeds Analysis of feeds Performance of pigletsFinal weight Performance of pigletsAverage daily gain Performance of pigletsAverage Daily Feed Intake Performance of pigletsFeed Conversion Ratio Conclusion ULTRACID LAC DRY Better feed intake Increased daily growth (3.56%) Improved animal performance Effect of ULTRACID in Pigs Vietnam Dong Hiep commercial Pig Farm, Thu Duc District, Ho Chi Minh City 2nd of March to 15th of October 2001 Experimental Design Experimental Diets Nutritional parameters Performance of pigsfinal weight Performance of pigs Average Daily Weight Gain Performance of pigsFeed Intake ULTRACID LAC Dry: dietary recommendations Pigs Piglet prestarter and