›› 2018, Vol. 45 ›› Issue (3): 690-697.doi: 10.16431/j.cnki.1671-7236.2018.03.017

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Effects of Composite Additives of Antimicrobial Peptides and Probiotics on Growth Performance, Slaughter Performance and Serum Biochemical Indexes in Partridge Shank Chickens

SONG Qiongli, CHEN Xiaolian, ZHOU Quanyong, LIU Linxiu, ZOU Zhiheng, WEI Qipeng   

  1. Institute of Animal Husbandry and Veterinary Science, Jiangxi Academy of Agricultural Sciences, Nanchang 330200, China
  • Received:2017-09-25 Online:2018-03-20 Published:2018-03-22

Abstract:

The research was aimed to study the effects of composite additives of antimicrobial peptides and probiotics on growth performance,slaughter performance and serum biochemical indexes in Partridge Shank chickens.The total of 460 7-day-old Partridge Shank chickens with similar body weight were randomly divided into 5 groups with 4 replicates each group,23 birds per replicate.The chickens in control group were fed with basal diet with 150 mg/kg aureomycin (group Ⅰ),the chickens in treatment groups were fed with composite additive of antimicrobial peptides and probiotics with level of 200 mg/kg (group Ⅱ),400 mg/kg (group Ⅲ),600 mg/kg (group Ⅳ) and 800 mg/kg (group Ⅴ),respectively.The experiment lasted for 56 days.The results showed that:①Compared with control group in the early period,the ADFI in treatment groups except group Ⅱ increased and significant difference was observed in groups Ⅳ and Ⅴ(P < 0.05).The ADG in all treatment groups increased and significant difference was observed in group Ⅳ(P < 0.05).The F/G in group Ⅴ increased lightly and decreased in other treatment groups with significant difference in groups Ⅱ and Ⅳ (P < 0.05).There were no significant difference in the ADFI,ADG and F/G among groups in the later period and the whole period (P > 0.05).②Compared with control group,percentage of eviscerated yield,breast muscle and leg muscle had a certain increase (P > 0.05).③Serum total protein in groups Ⅲ,Ⅳ and Ⅴ were 1.18%,12.11% and 29.28% higher than that of control group,respectively.Serum albumin in groups Ⅲ,Ⅳand Ⅴ were 23.87%,22.28% and 23.05% higher than that of control group,respectively (P < 0.05).The ALP activity in groups Ⅲ,Ⅳ and Ⅴ were 12.07%,13.17% and 29.67% higher than that of control group, respectively.The AST activity in groups Ⅱ,Ⅲ,Ⅳ and Ⅴ were 0.95%,16.22%,92.95% and 137.94% higher than that of control group,respectively,and significant differences were found in groups Ⅳ and Ⅴ (P < 0.05).Supplementation of composite additive of antimicrobial peptides and probiotics to substitute antibiotics in Partridge Shank chickens diet could increase the content of serum total protein and albumin,activity of ALP and AST,promote the nutrient metabolism and improve the growth and slaughter performance in Partridge Shank chickens.

Key words: antimicrobial peptides; probiotics; Partridge Shank chickens; growth performance; slaughter performance; serum biochemical indexes

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