Effects of Dietary Protein Levels on Reproductive Performance,Digestion and Metabolism and Plasma Biochemical Indicators of Tarim Pigeons During Breeding Period
[Objective]The objective of this experiment was to investigate the effect of different protein levels on the reproductive performance,digestive metabolism,and plasma biochemical indicators of Tarim pigeons during breeding period under"2+2"production mode,in which a pair of breeding pigeons feeds 2 squabs simultaneously.[Method]60 pairs of healthy Tarim breeding pigeons aged 12-18 months,with similar reproductive performance,were randomly divided into 5 groups,with 12 pairs in each group,and each pair bred 2 squabs.The pigeons in groups Ⅰ,Ⅱ,Ⅲ,Ⅳ and Ⅴ were fed with different crude protein(CP)levels(12％,13％,14％,15％and 16％).The experiment had a 3-day pre-experimental period and a 28-day experimental period.At the end of the breeding period,the performance,digestion and metabolism and plasma biochemical indicators of pigeons were measured.[Result]① The dietary protein levels significantly affected the average daily feed intake(ADFI)of pigeons during the breeding period,and ADFI of pigeons in group Ⅱ was significantly higher than that in groups Ⅳ and Ⅴ(P＜0.05).The weight loss of pigeons was gradually increased during breeding period.② With the protein levels increased,the apparent digestibility of CP in pigeons was gradually increased.The dietary protein levels significantly affected the apparent digestibility of CP in pigeons during breeding period,and the apparent digestibility of CP in group Ⅰ was significantly lower than that in groups Ⅳ and Ⅴ(P＜0.05).③ The dietary protein levels significantly affected the levels of high-density lipoprotein(HDL)and low-density lipoprotein(LDL)in plasma of pigeons during breeding period,the HDL level of pigeons in group Ⅲ was significantly lower than that in other groups,and the LDL level of pigeons in group Ⅲ was significantly higher than that in other groups(P＜0.05).[Conclusion]Under the conditions of this experiment,13％CP was recommended to be applied as the protein dietary requirement of Tarim pigeons during breeding period in"2+2"pattern.
dietary protein levelsTarim pigeonsbreeding periodreproductive performancedigestion and metabolismplasma biochemical indicators
国家科技期刊平台
NSTL
万方数据
