Effects of different crude protein levels on reproduction performance of White King breeding pigeons and growth performance of squabs
The purpose of the experiment was to explore the effects of different crude protein levels under the'2+2'production mode on the reproductive performance White King breeding pigeons and growth performance of squabs.In the experiment,168 pairs of 300-day-old healthy breeding pigeons with similar egg laying performance were randomly divided into four groups,each group had seven replicates,each replicate was six pairs of breeding pigeons,and each pair of breeding pigeons was fed with two squabs.Group Ⅰ,Group Ⅱ,Group Ⅲ,and Group Ⅳ were fed diets with the crude protein levels of 13.43％,15.04％,16.64％,and 18.25％,respectively.The experimental period was 46 days,including 18 days(1～18 days)of incubation and 28 days(19～46 days)of lactation.The results showed that the laying interval of Group Ⅱ and Group Ⅲ was significantly lower than that of group Ⅰ(P＜0.05),the fertilization rate of eggs in Group m was significantly higher than that of Group Ⅰ and Group Ⅳ(P＜0.05),and the hatchability rate of eggs in Group Ⅲ was extremely higher than that in Group Ⅰ,Group Ⅱ,and Group Ⅳ(P＜0.01).The 28-day-old body weight of the squabs in Group Ⅲ was significantly higher than that in Group Ⅰ(P＜0.05),the slaughter rate of the squabs was extremely higher than that in Group Ⅰ(P＜0.01),and the pectoral muscle rate of the squabs was significantly higher than that in Group Ⅰ,Group Ⅱ,and Group Ⅳ(P＜0.05).The litter of feed to gain ratio 1 of Group Ⅱ,Group Ⅲ,and Group Ⅳ was extremely lower than that of Group Ⅰ(P＜0.01).The study shows that different crude protein levels affect the reproductive performance of breeding pigeons,the growth performance of suckling pigeons and the weight ratio of nest stock,and in the'2+2'production mode,it is recommended that the suitable crude protein level of White King breeding pigeon diet is 16.64％.
breeding pigeonssquabscrude protein level'2+2'production modereproduction performancegrowth performance
国家科技期刊平台
NSTL
万方数据
维普
