The effect of adding black water fly larvae powder to the diet on the production performance,egg quality,and economic benefits of laying hens
This study aims to investigate the effects of adding black water fly larval powder to the diet on the production performance,egg quality,and economic benefits of laying hens.1200 Hailan brown laying hens of similar age and good laying performance were randomly divided into 4 groups,with 5 replicates in each group and 60 chickens in each replicate.Do not use 0%,10%,20%,and 30%black water fly larval meal as a substitute for fish meal in the basic diet as the experimental feed.The experiment lasted for a total of 42 days(including 7 days of pre test and 35 days of trial).The experimental results showed that compared with the control group,replacing fish meal in the diet with 20%and 30%black water fly larval meal significantly increased the egg production rate of laying hens by 2.1%and 3.3%(P＜0.05);Reduce the feed to egg ratio by 5%and 6%,respectively.In addition,the addition of black water fly larval powder to the diet did not significantly affect the average egg weight,average daily feed intake,soft break rate,and mortality rate of laying hens(P＞0.05).Replacing fish meal in the diet with 20%and 30%black water fly larval meal significantly increased egg protein height(P＜0.05);The use of 30%black water fly larval meal as a substitute for fish meal in the diet significantly increased the Harbin unit of eggs(P＜0.05);In addition,the addition of black water fly larvae powder to the diet had no significant effect on egg yolk color,eggshell thickness,eggshell strength,egg shape index,eggshell ratio,egg yolk ratio,and protein ratio(P＞0.05).After replacing fish meal in the diet with black water fly larval meal,the feed cost was reduced by 0.01,0.02,and 0.03 yuan,respectively;Egg income increased by 0.4,2.19,and 2.31 yuan respectively;In addition,replacing fish meal in the diet with 20%and 30%black water fly larval meal significantly increased the gross profit of laying hens by 2.21 and 2.34 yuan,respectively(P＜0.05).In summary,the optimal replacement amount for black water fly larval powder is 30%.
black water fly larval powderegg laying hensproduction performanceegg qualityeconomic benefits
万方数据
维普
