关键词: 抗菌肽; 葡萄糖氧化酶; 乳鸽; 生长性能; 肉品质; 免疫

Abstract: 【Objective】 The purpose of this experiment was to explore the effects of antimicrobial peptides and glucose oxidase alone or jointly on the growth performance,slaughter performance,meat quality,immune performance and antioxidant capacity of suckling pigeons,provide a theoretical basis for the application of antimicrobial peptides and glucose oxidase in the production of suckling pigeons. 【Method】 240 pairs of healthy adult White Kanu pigeons (2 years old) were selected and randomly divided into four groups,control group (CK,basal diet),antimicrobial peptide group (AP,basal diet＋200 mg/kg of antimicrobial peptide),glucose oxidase group (GOD,basal diet＋150 mg/kg of glucose oxidase),and compound group (CP,basal diet＋200 mg/kg of antimicrobial peptide＋150 mg/kg of glucose oxidase),with 10 replicates in each group and 6 breeding pairs in each replicate.The experimental period was 53 days,including 7 days of pre-feeding,18 days of incubation and 28 days of lactation.The suckling pigeons were weighed at 0,7,14,21 and 28 days of age to determine the growth performance,and blood was collected at 28 days of age to measure serum immune,antioxidant,and biochemical indicators.After slaughter,slaughter performance,organ coefficient,and meat quality traits were measured. 【Result】 Compared with control group,① The body weight (BW) of 14 and 28 days of age and the average daily weight gain (ADG) of 0-14 days of age of suckling pigeons were significantly increased in AP group,the feed to gain ratio (F/G) at 0-14 days of age was significantly decreased (P＜0.05).The BW of 7 and 14 days of age and the ADG of 0-14 days of age in the GOD and CP group were significantly increased,and the F/G of 0-14 days of age in the GOD group was significantly decreased (P＜0.05).②The dressing weight,eviscerated yield weight,pectoral muscle weight,heart weight,muscle stomach weight,kidney weight,bursa of Fabricius weight,muscle stomach and kidney index of suckling pigeons in AP group were significantly increased,while the liver index was significantly decreased (P＜0.05).The eviscerated yield weight,eviscerated yield rate,muscle stomach weight and index of suckling pigeons in GOD group were significantly increased (P＜0.05).The dressing rate,liver weight and liver index in CP group were significantly decreased (P＜0.05).③ The brightness (L^*) of the pectoral and leg muscles of suckling pigeons in AP,GOD and CP groups were significantly decreased (P＜0.05).While the water loss rate of the pectoral muscle in AP group was significantly decreased (P＜0.05).The yellowness (b^*) of the pectoral muscle in GOD group was significantly increased (P＜0.05),the redness (a^*) and b^* of the pectoral muscle in CP group were significantly increased,and the shear force of the pectoral and leg muscles were significantly decreased (P＜0.05).④ The content of interleukin-10 (IL-10) in AP group was significantly increased (P＜0.05),the activity of glutathione peroxidase (GSH-Px) was significantly increased and the content of malondialdehyde (MDA) was significantly decreased in GOD group (P＜0.05).The content of immunoglobulin A (IgA) in CP group was significantly decreased (P＜0.05). 【Conclusion】 The addition of 200 mg/kg of antimicrobial peptide or 150 mg/kg glucose oxidase to the ration could significantly improve the growth performance,immune performance and antioxidant capacity,and improve the meat quality of suckling pigeons,but the two should not be mixed for use.

Key words: antimicrobial peptide; glucose oxidase; suckling pigeon; growth performance; meat quality; immunity