Effects of different dietary crude protein levels on feed conversion and production performance of Binglangjiang buffalo
ZHANG Hao
ZHANG Meng
CHEN Yanmei
SHI Jianwei
WANG Lixing
LIU Ping
MAO Huaming
LI Qing
Abstract：The experiment aimed to determine the optimal dietary crude protein level during the lactation period of Binglangjiang buffalo to improve feed conversion efficiency and production performance.Twenty-one healthy Binglangjiang dairy buffalo with similar age,parity,and previous lactation milk yield were randomly divided into three groups,with seven replicates per group,one buffalo per replicate.The dietary crude protein levels were 9.50％,12.50％,and 14.80％,respectively.After a 10-day pre-trial period,the formal trial lasted for eight months(covering the entire lactation period).The results showed that the 7％fat-corrected milk yield in the 14.80％crude protein group extremely increased compared to the 9.50％crude group(P＜0.01),with nitrogen intake extremely higher than other groups(P＜0.01).The the nitrogen intake in the 12.50％crude protein group was extremely higher than the 9.50％crude group(P＜0.01).Compared to the 9.50％crude protein group,the feed conversion rate in the 14.80％crude protein group significantly improved(P＜0.05),the nitrogen-to-milk conversion efficiency extremely reduced(P＜0.01).Both feed and nitrogen conversion efficiencies peaked in the first month of lactation across all groups.The study indicates that a 14.80％crude protein diet enhances feed conversion rate,nitrogen intake,and milk yield in Binglangjiang buffalo,while showing no significant effects on dry matter intake,body weight,milk protein percentage,or milk fat percentage.
Keywords：crude protein levelBinglangjiang buffalofeed conversion efficiencymilk quality
Publication Date：2025-02-16
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 1-6 )