Effects of Chelerythrine Premix on Production Performance and Serumbiochemical Parameters of Broiler Breeders
The experiment was designed to inves-tigate the effects of Chelerythrine premix on the production performance and serum biochemical indexes of broiler breeders.A total of 1 500 healthy 180-day-old Tianfu broiler breeders were selected and randomly divided into 5 groups of 300 chickens each,with 6 replicates of 50 chickens in each group.The 1,3 and 5 times dosage groups were supplemented with chelerythrine premix at 0.05,0.15 and 0.25 g/kg(in terms of chelerythrine)in the basal diet,respectively;the Macleaya cordata group was supplemented with Boluchui San premix at 0.03 g/kg in the basal diet as a positive control;and the blank group was fed with basal diets.The experiment started from 180 d and ended at 236 d,totaling 56 d.The results showed that:① in terms of egg production performance,the average egg production rate of each test group was significantly higher than that of the blank group(P<0.05),and the 0.15 g/kg dosage group was the best one and was better than that of the positive control group,which was the Macleaya cordata group,and there was a tendency of increase in the average egg weight of the test groups,and there was a tendency of decrease in the rate of broken eggs,and the qualified rate of breeding eggs was higher than that of the blank group.The average egg weight of each test group tended to increase,the broken egg rate tended to decrease,the qualified rate of breeding eggs was higher than that of the blank group,and the feed-to-egg ratios were significantly lower than that of the blank group(P<0.05),and the 0.15 g/kg dosage group was the best one and better than that of the Macleaya cordata group,except for the broken egg rate.② In terms of hatching performance,the healthy chick rate of each chelerythrine premix test group was significantly higher than that of the blank group(P<0.05),and the dead embryo rate of each test group was also significantly lower than that of the blank group(P<0.05).③ In terms of egg quality,the eggshell thick-ness of leucovorin 0.15 g/kg dosage group and Macleaya cordata group was significantly higher than that of the blank group(P<0.05),and the eggshell strength and protein height of leucovorin 0.15 g/kg dosage group,0.25 g/kg dosage group and Macleaya cordata group were significantly higher than that of the blank group(P<0.05),and the Haugh Units of each experimental group was significantly higher than that of the blank group(P<0.05).The 0.15 g/kg dose group was the best.④ As for the serum biochemical indexes,the MDA levels of the 0.15 g/kg dose group,0.25 g/kg dose group and Macleaya cordata group were significantly lower than those of the blank group(P<0.05),and the SOD levels of the groups were higher than those of the blank group,with the best in the Macleaya cordata group,and the 0.15 g/kg dose group of the Macleaya cor-data group was the best,with the same levels as the 0.15 g/kg dose group(P<0.05),while the SOD levels of the groups were higher than the blank group,with the best in the Macleaya cordata group,and the best in the 0.15 g/kg dose group.The T-AOC level in the 0.25 g/kg dosage group was significantly higher than that in the blank group(P<0.05),and the serum levels of ALT AST and TC were significantly lower than that of the blank group in each experimental group(P<0.05),and the levels of ALT and AST were increased with the increase in the additive amount of chelerythrine.The levels of TG and urea BUN in the serum of the 0.15 g/kg and 0.25 g/kg dosage groups were significantly lower than those of the blank group(P<0.05).It can be seen that the addition of appropriate level of chelerythrine premix can improve the yolk color and enhance the egg quality,as well as enhance the immune function,reproductive performance and antioxidant capacity,reduce the hepatic load,reduce lipid deposition,regulate protein metabolism,and thus improve the function of the liver and the kidneys,and the best effect was found in the group with the dosage of 0.15 g/kg.
万方数据
维普
