Effects of dietary energy and protein levels on production performance,nutrient apparent digestibility,and economic benefit of eliminated female Sinan yellow cattle
ZENG Mao-qin
QIN Tao-ying
PEI Cheng-jiang
FU Wei
ZHOU Li
HAN Yong-fen
Abstract：The aim of this experiment was to investigate the effects of dietary energy and protein levels on production performance,nutrient apparent digestibility,and economic benefit of eliminated female Sinan yellow cattle.Thirty-six healthy Sinan yellow cattle with body weight of(225±10)kg were randomly divided into three groups with 12 replicates per group and one cattle per replicate.The comprehensive net energy of group A(low energy and low protein group),group B(medium and medium protein group)and group C(high energy and high protein group)were 5.85,6.50 and 7.15 MJ/kg,respectively,and the protein levels were 12.11％,13.45％and 14.80％,respectively.The pre-test lasted for 14 days and the experimental period lasted for 90 days.The results that the average daily gain and average daily dry matter intake of group C were the highest,and the ratio of feed to gain of group A was significantly lower than that of other groups(P＜0.05).Dietary energy and protein levels had no significant effects on nutrient apparent digestibility,slaughter performance,and meat quality of eliminated female Sinan yellow cattle(P＞0.05).The profit of group A was significantly higher than that of other groups(P＜0.05).The study indicates that the comprehensive net energy of the diet is 5.85 MJ/kg and the protein level is 12.11％,and the production performance and economic benefits of the eliminated female Sinan yellow cattle are better.
Keywords：energy and protein levelseliminated female Sinan yellow cattleproduction performanceeconomic benefits
Publication Date：2024-12-31
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 11-15 )