China Animal Husbandry and Veterinary Medicine ›› 2022, Vol. 49 ›› Issue (3): 953-961.doi: 10.16431/j.cnki.1671-7236.2022.03.017

• Nutrition and Feed • Previous Articles     Next Articles

Effects of Alfalfa Meal on Growth Performance, Serum Related Indexes of Serum Antioxidant and Immune Performance in Finishing Pigs

JIANG Heng1,2, WANG Huaishu1, ZHUO Na3, WANG Jianguo1, REN Jia1, GAO Rujun4, WU Yuping4, GAO Fengqin2   

  1. 1. Hangjinqi Lumei Agriculture and Animal Husbandry Development Co., Ltd., Ordos 017400, China;
    2. Institute of Grassland Research of CAAS, Huhhot 010010, China;
    3. Inner Mongolia Academy of Agricultural & Animal Husbandry Sciences, Huhhot 010010, China;
    4. Hangjinqi Agricultural and Animal Husbandry Technology Extension Center, Ordos 017400, China
  • Received:2021-08-27 Online:2022-03-05 Published:2022-03-03

Abstract: 【Objective】 The effects of adding different proportions of alfalfa meal on the growth performance, serum biochemical indicators, antioxidant properties and immune indicators of fattening pigs were studied in this experiment, in order to find out the optimal addition ratio of alfalfa meal in the diets of fattening pigs.【Method】 120 Du×Long×Large pigs with an average weight of (75.5±1.03) kg were selected and randomly divided into 4 groups, with 6 replicates in each group, and 1 pen per replicate.0 (control group), 5%, 10%, and 15% alfalfa meal were added to the basal diets for feeding experiments.The pre-test period was 7 days and the official period was 45 days.The initial weight, final weight of each pig and daily feed intake per pen were determined.After the test, 1 pig was randomly selected from each pen, 10 mL of blood was collected from anterior vena cava to determine the serum biochemical indexes, antioxidant indexes and immunoglobulin content.【Results】 Compared with control group, the average daily gain of each experimental group was significantly reduced (P<0.05).The feed-to-gain ratio (F/G)of 5% and 10% alfalfa groups had no significant difference (P>0.05), while it was significantly increased in 15% alfalfa group (P<0.05).The activities of antioxidant dismutase (SOD) were significantly increased in 3 experimental groups (P<0.05).The triglyceride (TG) content was significantly increased (P<0.05), and the content of malondialdehyde (MDA) was significantly reduced (P<0.05) in 5% alfalfa group.The total antioxidant capacity (T-AOC) and catalase (CAT) activity were significantly increased (P<0.05), while the content of MDA was significantly reduced (P<0.05) in 10% alfalfa group.【Conclusion】 Adding 15% alfalfa meal would significantly increase F/G of fattening pigs, and the addition of 5% and 10% alfalfa could increase the antioxidant capacity.It was recommended that 5%-10% alfalfa meal should be added to the diet of finishing pigs.

Key words: alfalfa meal; finishing pigs; growth performance; serum biochemical index; immune performance; antioxidant index

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