China Animal Husbandry and Veterinary Medicine ›› 2024, Vol. 51 ›› Issue (8): 3311-3319.doi: 10.16431/j.cnki.1671-7236.2024.08.009

• Nutrition and Feed • Previous Articles    

Effects of Guanidinoacetic Acid on Growth Performance,Serum Biochemical Indices,Antioxidant Capacity and Immune Function of Finishing Pigs

LI Zhenming1,2, MA Xianyong1,4, RONG Ting1, CUI Yiyan1, SONG Min1, LIU Zhichang1, DENG Dun1, TIAN Zhimei1, YU Miao1,3   

  1. 1. Guangdong Engineering Technology Research Center of Animal Meat Quality and Safety Control and Evaluation, Guangdong Public Laboratory of Animal Breeding and Nutrition, Key Laboratory of Animal Nutrition and Feed Science in South China, Ministry of Agriculture and Rural Affairs, State Key Laboratory of Swine and Poultry Breeding Industry, Institute of Animal Science, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China;
    2. Qingyuan Longfa Pig Breeding Co., Ltd., Qingyuan 511500, China;
    3. Heyuan Branch, Guangdong Laboratory for Lingnan Modern Agricultural Science and Technology, Heyuan 517000, China;
    4. Maoming Branch, Guangdong Laboratory for Lingnan Modern Agricultural Science and Technology, Maoming 525032, China
  • Received:2024-01-04 Published:2024-07-31

Abstract: 【Objective】 The aim of this study was to explore the effects of dietary supplementation with guanidinoacetic acid on the growth performance,serum biochemical indices,antioxidant capacity and immune function of finishing pigs,and provide reference for the application of guanidinoacetic acid in pig breeding industry.【Method】 Thirty-six healthy Duroc×Landrace×Yorkshire three-way crossbred sows with similar body weights were randomly divided into 3 groups with 6 replicates per group and 2 sows per replicate.Finishing pigs in control group were fed basal diet,and finishing pigs in experiment group were supplemented with 0.1% guanidinoacetic acid (GAA group) and 0.1% guanidinoacetic acid + 0.04% betaine (GAA+BT group) in basal diet,respectively.The experiment lasted for 50 d.At the end of the experiment,finishing pigs were weighed on empty stomachs in replicates and calculated for growth performance,one pig was selected from each replicate for vena cava blood sampling to determine serum biochemical indices,antioxidant capacity and immune function.【Result】 ① Dietary supplementation with guanidinoacetic acid had no significant effect on growth performance of finishing pigs (P>0.05).② Compared with control group,the contents of total protein,globulin,interleukin-2,interleukin-10,interferon-γ and immunoglobulin A in serum of finishing pigs in GAA and GAA+BT groups were significantly increased,and the immunoglobulin G content in serum of finishing pigs in GAA group was significantly increased (P<0.05).The levels of creatinine,uric acid and lactate dehydrogenase in serum of finishing pigs in GAA and GAA+BT groups were significantly decreased,and the malondialdehyde content in serum of finishing pigs in GAA+BT group was significantly decreased (P<0.05).③ Compared with control and GAA groups,the total antioxidant capacity in serum of finishing pigs in GAA+BT group was significantly increased (P<0.05).④ Compared with control and GAA+BT groups,the tumor necrosis factor-α content in serum of finishing pigs in GAA group was significantly increased (P<0.05).【Conclusion】 Dietary supplementation with guanidinoacetic acid did not affect the growth performance of finishing pigs,however,it could improve the metabolism level,enhance the antioxidant capacity and immune function of finishing pigs,and it was effective both alone and in combination with the addition of betaine.

Key words: guanidinoacetic acid; finishing pigs; growth performance; serum biochemical indices; antioxidant capacity; immune function

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