Effects of Whole Plant Silage Corn Treated with Microbial Enzyme Complex Preparation on Production Performance and Rumen Fermentation Parameters of Jiaxian Red Cattle
The purpose of this study is to investigate the effect of whole plant silage corn treated with microbial enzyme complex preparation instead of whole plant silage corn on the growth performance,apparent digestibility of nutrients,serum biochemical indicators,and rumen fermentation parameters of Jiaxian Red cattle.A total of 80 healthy Jiaxian Red cattle(bull)with similar age and weight were selected to randomly divide into 4 groups,with 5 replicates in each group,and 4 cattle in each replicate.The control group was fed with basic feed,while the three experimental groups Ⅰ,Ⅱand Ⅲ were fed with whole plant silage corn treated with microbial enzyme complex agents instead of 10%,20%,and 30%of whole plant silage corn in the basic feed.The pre trial and regular trial periods were 10 days and 180 days,respectively.The results showed that compared with the control group,the average daily gain of beef cattle in experi-mental groups Ⅱ and Ⅲ significantly increased(P＜0.05),and the feed to weight ratio significantly decreased(P＜0.05);the apparent digestibility of dry matter,crude protein,and crude fiber in experimental groups Ⅱ and Ⅲ significantly in-creased(P＜0.05),while the apparent digestibility of neutral detergent fiber in experimental group Ⅱ significantly in-creased(P＜0.05);the serum IgA contents of beef cattle in three experimental groups were significantly increased(P＜0.05),while the serum IgG content of beef cattle in experimental group Ⅱ was significantly increased(P＜0.05),but there was no significant difference in serum antioxidant indicators among the groups(P＞0.05);the rumen ammonia levels of beef cattle in experimental groups Ⅱ and Ⅲ were significantly reduced(P＜0.05),but the contents of acetic acid and propionic acid were significantly increased(P＜0.05).In conclusion,using whole plant silage corn treated with microbial enzyme complex preparation instead of 20%whole plant silage corn can significantly improve the growth performance,nutrient apparent digestibility,and rumen fermentation parameters of Jiaxian Red cattle.
microbial enzyme complex preparationwhole plant silage cornJiaxian Red cattlegrowth performanceapparent digestibility of nutrientrumen fermentation parameter
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