N-氨甲酰谷氨酸对淮南麻黄鸡生产性能、蛋品质及抗氧化能力的影响

doi:10.16431/j.cnki.1671-7236.2025.10.016

Abstract

Abstract: 【Objective】 This experiment aimed to investigate the optimal supplementation dosage of N-carbamylglututamate(NCG) in laying hens during the late laying period,thereby providing theoretical foundations and practical guidance for the scientific application of NCG in the production of local specialty laying hens.【Method】 A total of 360 Huainan patridge chickens at 70 weeks of age were randomly divided into four groups,each group has 6 replicates,with 15 individuals per replicate.The chickens in experimental groups were fed diets supplemented with 0.5,1.0,and 1.5 g/kg NCG in the basal diet,respectively.The test period was 42 days.Egg production,egg weight,and daily feed intake were recorded throughout the experiment.During the experiment,egg production,egg weight,and daily feed intake were recorded.On days 21 and 42 of the experiment,all eggs were collected to measure egg quality.At the end of the experiment,3 hens were selected per replicate to collect serum and liver samples for biochemical and antioxidant analysis.【Result】 Compared with the control group,when NCG was added at 1.0 g/kg,the egg production rate of Huainan patridge chickens was significantly increased (P＜0.05),the yolk’s triglyceride (TG) and total cholesterol (T-CHO) contents,as well as superoxide dismutase (SOD) activity,were all significantly increased (P＜0.05),while malondialdehyde (MDA) content was significantly decreased (P＜0.05).The activity of nitric oxide synthase (NOS) in serum was significantly increased (P＜0.05),and the activity of SOD and the content of nitric oxide (NO) in liver were significantly increased also (P＜0.05).When NCG was added at 1.5 g/kg,the egg production rate,average egg weight,yolk color and eggshell thickness of laying hens were significantly increased (P＜0.05),the activity of SOD in egg yolk was significantly increased,while the content of MDA was significantly decreased (P＜0.05).The content of NO and the activity of NOS in serum were significantly increased (P＜0.05).【Conclusion】 Supplementing the basal diet with NCG significantly improved the production performance,egg quality and antioxidant capacity of Huainan patridge chickens in the late laying period,with 1.0 g/kg identified as the optimal dosage.

Key words: N-carbamylglutamate; Huainan patridge chickens; production performance; egg quality

CLC Number:

S816.7

HONG Weiming, JIA Ling, ZHAO Dong, CHEN Liang, SONG Liang, WU Guansuo, WANG Yongjuan. Effects of N-carbamylglutatmate on Production Performance,Egg Quality and Antioxidant Capacity of Huainan Patridge Chickens[J]. China Animal Husbandry & Veterinary Medicine, 2025, 52(10): 4709-4716.

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Effects of N-carbamylglutatmate on Production Performance,Egg Quality and Antioxidant Capacity of Huainan Patridge Chickens

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