China Animal Husbandry and Veterinary Medicine ›› 2023, Vol. 50 ›› Issue (3): 998-1006.doi: 10.16431/j.cnki.1671-7236.2023.03.015

• Nutrition and Feed • Previous Articles     Next Articles

Effects of Coated Sodium Butyrate on Growing Performance,Slaughter Performance, Immune Organ Index and Digestive Enzyme Activity of Breeding Pigeons and Squabs

LIU Zhen1,2, ZHOU Xueqin3, XU Fei1,2, LI Zhefeng4, SUN Hanxue2, LI Guoqin2, TAO Zhengrong2, GUAN Mei3, ZHENG Qiang4, DIAO Xinping1, LU Lizhi2   

  1. 1. College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, China;
    2. Institute of Animal Husbandry and Veterinary Science, Zhejiang Academy of Agricultural Science, Hangzhou 310021, China;
    3. Huzhou Huajia Special Breeding Co., Ltd., Huzhou 313000, China;
    4. Hangzhou Kangdequan Feed Co., Ltd., Hangzhou 311107, China
  • Received:2022-08-25 Online:2023-03-05 Published:2023-03-02

Abstract: 【Objective】 The purpose of this experiment was to explore the effects of adding different concentrations of coated sodium butyrate in health sand on the growth performance,slaughter performance and immune organ index of breeding pigeons and squabs.【Method】 A total of 336 pigeons at 6 months of age were randomly divided into 4 groups with 7 replicates per group and 12 in each replicate.Squabs were natural hatching by breeding pigeons,each pair of breeding pigeon fed two squabs.The breeding pigeons in the control group were fed a basal health sand,the breeding pigeons in groups A to C were fed basal health sand supplemented with 0.1%,0.2% and 0.4% coated sodium butyrate.The experiment of breeding pigeons lasted for 120 days and that of squabs lasted for 28 days.The initial and final weights of breeding pigeons and squabs were weighed, the feed consumption of breeding pigeons was counted,and the growth performance was calculated.At the end of the test,5 breeding pigeons and 5 squabs in each group were selected and slaughtered,and then the slaughter weight,breast muscle weight,leg muscle weight,semi-eviscerated weight and eviscerated weight were weighed,and the slaughter performance was calculated.The thymus,spleen,bursa of Fabricius of squabs and thymus and spleen of breeding pigeons were weighed to calculate the immune organ index.The activities of amylase,trypsin and lipase in duodenum of breeding pigeons were determined.【Result】 ①The average daily weight gain of breeding pigeons in groups A and B during lactation was significantly higher than that of the control group and group C,and the feed intake of breeding pigeons aged 10 months in group A was significantly higher than that of the control group (P<0.05),while the average daily weight gain of squabs in groups B and C was significantly higher than that of the control group and group A (P<0.05).②Compared with the control group,the percentage of semi-eviscerated yield and eviscerated yield of breeding pigeons in groups A and B,and the percentage of semi-eviscerated yield and eviscerated yield,slaughter rate of squabs in groups A,B and C were significantly increased (P<0.05).③There was no significant difference in thymus index and spleen index of breeding pigeons among the groups (P>0.05).The thymus index of squabs in group B was significantly higher than that in group C,while the bursal of Fabricius index of squabs in group B was significantly lower than that in group C (P<0.05).④Compared with the control group,the trypsin activity in the duodenum of breeding pigeons in group C was significantly higher (P<0.05),and the lipase activity in groups B and C was significantly higher (P<0.05).【Conclusion】 Adding coated sodium butyrate to healthy sand could improve the average daily gain and average feed intake of breeding pigeons and squabs,improve slaughter performance and immunity of squabs,and increase trypsin activity and lipase activity in duodenum of breeding pigeons.Under the experimental conditions,adding 0.2% coated sodium butyrate in the health sand had the best effect.

Key words: coated sodium butyrate; breeding pigeons; squabs; growing performance; immune function

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