China Animal Husbandry and Veterinary Medicine ›› 2023, Vol. 50 ›› Issue (6): 2305-2311.doi: 10.16431/j.cnki.1671-7236.2023.06.014

• Nutrition and Feed • Previous Articles     Next Articles

Effect of Translucent on Egg Quality and Its Relationship with Intestinal Function of Laying Hen

DU Yuanjun1,2, DUAN Guochao1,2, LIU Wei2, LI Dapeng2, HAN Haixia2, LEI Qiuxia2, ZHOU Yan2, LIU Jie2, WANG Jie2, CAO Dingguo2, LI Fuwei2, CHEN Fu1   

  1. 1. College of Veterinary Medicine, Qingdao Agricultural University, Qingdao 266109, China;
    2. Poultry Institute, Shandong Academy of Agricultural Sciences, Jinan 250100, China
  • Received:2022-11-23 Online:2023-06-05 Published:2023-05-30

Abstract: 【Objective】 The purpose of this experiment was to explore the effect of translucent on egg quality and the relationship between the formation of translucent eggs and the intestinal function of laying hens.【Method】 A total of 100 Jining Bairi chickens aged 276 days with the same feeding environment were selected.Eggs were collected at 09:00 every day and translucent production of each hen was counted.The experiment lasted for 42 days.Ten laying hens with high translucent rate of grade 1 were selected as the control group, and ten laying hens with high translucent rate of grade 4 were selected as the translucent group.60 translucent eggs and 60 normal eggs were selected to determine the egg quality.Jejunum and ileum tissues were collected from laying hens on day 42.The morphology of intestinal tissues was observed, and the activities of digestive enzymes, ATPase and antioxidant factors in jejunum and ileum tissues were determined.【Result】 The results showed that, compared with the control group, the eggshell thickness and eggshell proportion in translucent group were extremely significantly increased (P<0.01), while the egg yolk color was significantly decreased (P<0.05).The activities of lipase, sodium-potassium ATPase, glutathione peroxidase and total antioxidant capacity of jejunum of laying hens in translucent group were significantly or extremely significantly decreased (P<0.05 or P<0.01).The activities of amylase and calcium and magnesium ATPase of ileal in translucent group were significantly decreased (P<0.05).There were no significant differences in the villus height, crypt depth and ratio of villus to crypt of jejunum and ileum between translucent and control group (P>0.05).【Conclusion】 Eggshell translucent affected egg quality, resulting in eggshell thickness, eggshell ratio increased and yolk color decreased.Some intestinal digestive enzymes and antioxidant capacity of laying hens with eggshell translucent were decreased, so it was speculated that the production of translucent eggs was related to intestinal digestion, absorption and antioxidant capacity.

Key words: Jining Bairi chicken; translucent; egg quality; intestinal

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