Effects of Dietary Curcumin and Docosahexaenoic Acid on Growth Performance,Carcass Traits,Meat Quality and Serum Biochemical,Antioxidant and Immune Indexes of Finishing Pigs
This experiment was conducted to investigate the effects of effects of dietary curcumin and docosa-hexaenoic acid(DHA)on growth performance,carcass traits,meat quality and serum biochemical,antioxi-dant and immune indexes of finishing pigs.Fifty-four"Duroc×Landrace×Large"ternary pigs with similar days of age and average body weight of(90.76±0.45)kg were randomly divided into 2 groups with 3 replicates per group and 9 pigs per replicate.The control group was fed a basal diet,and the experimental group was fed the basal diet supplemented with 0.03％curcumin and 2.5％DHA.The pre-feeding period was 7 days and the for-mal period was 40 days.The results showed as follows:1)compared with the control group,the final body weight and average daily gain of the experimental group were significantly increased(P＜0.05),and the aver-age daily feed intake and feed to gain ratio were significantly decreased(P＜0.05).2)Compared with the con-trol group,the backfat thickness of the experimental group was significantly decreased(P＜0.05),and the eye muscle area was significantly increased(P＜0.05);the muscle drip loss was significantly decreased(P＜0.05),and the intramuscular fat content was significantly increased(P＜0.05).3)Compared with the control group,the contents of glycine,proline,palmitoleic acid(C16:1)and stearic acid(C18:0)in longissimus dorsi of the experimental group were significantly increased(P＜0.05),and the mRNA relative expression lev-els of myosin heavy chain Ⅱa(MyHCⅡa),myosin heavy chain Ⅱx(MyHCⅡx)and sterol regulatory ele-ment binding protein 1(SREBP1)were significantly increased(P＜0.05).4)Compared with the control group,the contents of triglycerides and total cholesterol in serum of the experimental group were significantly decreased(P＜0.05);the serum glutathione peroxidase,superoxide dismutase activities and total antioxidant capacity were significantly increased(P＜0.05),and the serum malondialdehyde content was significantly de-creased(P＜0.05);the contents of immunoglobulin G,immunoglobulin M and interleukin-4 in serum were significantly increased(P＜0.05),and the activities of alanine aminotransferase and aspartate aminotransferase in serum were significantly decreased(P＜0.05).In conclusion,the addition of curcumin and DHA in the diet can improve the feed utilization and meat quality of"Duroc×Landrace×Large"ternary pigs during fattening pe-riod,as well as enhance the serum lipid metabolism,antioxidant and immune ability.[Chinese Journal of Ani-mal Nutrition,2024,36(3):1537-1548]
万方数据
维普
