不同添加剂对高乳清粉熟化软颗粒教槽料防霉效果的影响研究  

Optimal Formulation of Dietary Anti-Mildew Additives for High Whey Powder Ripening Soft Pellet Creep Feed

作　　者：孔迪 潘元猛 胡燚炜 范超凡 王春维 祝爱侠 KONG Di;PAN Yuanmeng;HU Yiwei;FAN Chaofan;WANG Chunwei;ZHU Aixia(College of Animal Science and Nutritional Engineering,Wuhan Polytechnic University,Wuhan Engineering Technology Research Center of Livestock and Poultry Feed,Hubei Wuhan 430023,China)

机构地区：[1]武汉轻工大学动物科学与营养工程学院,武汉市畜禽饲料工程技术研究中心,湖北武汉430023

出　　处：《中国畜牧杂志》2022年第5期168-173,共6页Chinese Journal of Animal Science

基　　金：国家重点研发计划项目(2018YFD0500604)。

摘　　要：本试验旨在研究不同添加剂对高乳清粉熟化软颗粒教槽料防霉效果的影响,设立Ⅰ型添加剂组(由丙二醇及丙三醇按一定比例配制)、Ⅱ型添加剂组(由磷酸二氢钠和磷酸氢二钠按一定比例配制)、Ⅲ型添加剂组(由复合磷酸盐按照一定比例配制)、Ⅰ型复合添加剂组(Ⅱ型添加剂和Ⅲ型添加剂按一定比例配制)、Ⅱ型复合添加剂组(由Ⅰ型添加剂、Ⅰ型复合添加剂和柠檬酸按一定比例配制)和空白组。采用单因素试验设计,探究5种添加剂对饲料中水活度、水分含量、霉菌总数以及表观评价的影响。结果表明:储存期内饲料中的水活度呈现先下降,后不变的趋势,Ⅱ型复合添加剂组和Ⅰ型添加剂组的水活度低于其他组(P<0.05),且水活度低于0.8;Ⅰ型添加剂组水分含量降低得最缓慢,其次为Ⅱ型复合添加剂组;在储存期内,各试验组的霉菌总数均低于同期空白组(P<0.05),Ⅱ型复合添加剂组霉菌总数同期最低且感官评价最佳。综上,Ⅱ型复合添加剂组综合防霉效果最好,水活度及霉菌总数低于其他组(P<0.05),可选择Ⅱ型复合添加剂组作为高乳清粉熟化软颗粒教槽料的防霉剂。The purpose of this experiment was to study the effects of different additives on the anti-mildew of high whey powder ripening soft pellet creep feed.We set up typeⅠadditive group(by propylene glycol and glycerin according to certain proportion),typeⅡadditive group(by sodium dihydrogen phosphate and disodium hydrogen phosphate according to certain proportion),typeⅢadditive group(by compound phosphate according to certain proportion),typeⅠcompound additive group(typeⅡadditives andⅢadditives according to certain proportion),typeⅡcompound additive group(prepared by a certain proportion of typeⅠadditive,typeⅠcompound additive and citric acid)and blank group,each group had 6 replicates.A single factor experimental design was used to test the water activity,moisture content,total mold count and apparent evaluation in the feed.The results showed that during the storage period,the water activity in feed decreased firstly and then remained unchanged,and the water activity in typeⅡcompound additive group and typeⅠadditive group was lower than 0.8,which was significantly lower than that in other groups(P<0.05).The moisture content of typeⅠadditive group decreased the most slowly,followed by typeⅡcomposite additive group.During the storage period,the total number of mildew in each test group was lower than that of the blank group in the same period(P<0.05),and the typeⅡcomposite additive group had the lowest total number of mildew and the best sensory evaluation during the same period.To sum up,the typeⅡcompound additive group had the best comprehensive anti-mildew effect,the water activity and total number of mildew were significantly lower than those in other groups(P<0.05),it can be selected as the anti-mildew agent of high whey powder ripening soft pellet creep feed.

关 键 词：乳清粉 熟化软颗粒教槽料 水活度 防霉 

分 类 号：S816.7[农业科学—饲料科学]