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Comparison of the Effect of Green Tea By-product and Green Tea Probiotics on the Growth Performance, Meat Quality, and Immune Response of Finishing Pigs |
S. Y. Ko, I. H. Bae, S. T. Yee, S. S. Lee, D. Uuganbayar, J. I. Oh, C. J. Yang* |
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Correspondence:
C. J. Yang, |
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Abstract |
The objective of this experiment was to compare the effects of green tea by-product and green tea probiotics on the growth performance, meat quality and immune response of finishing pigs. A total of 72 crossbred “LandraceYorkshire” finishing pigs with an average of 76 kg body weight were assigned to 4 dietary treatments in a completely randomized design. Each treatment had 3 replications with 6 pigs per replication. The four dietary treatments were control, antibiotics (control diet with 0.003% chlortetracycline added), and diets containing 0.5% green tea by-product or 0.5% green tea probiotic supplementation. Weight gain was increased in 0.5% green tea probiotics treatment compared to others, but there was no significant difference (p>0.05). The incorporation of 0.5% green tea probiotics to diets reduced the feed conversion ratio in finishing pigs (p>0.05). The incorporation of 0.5% green tea by-product into the pig diet reduced the crude protein and fat contents of the meat (p>0.05). Pigs fed diets containing 0.5% green tea probiotic supplementation had lowered meat TBA values compared to those fed 0.5% green tea by-product (p<0.05). The proliferation of spleen cells stimulated with Con A (concanavalin: 0.1, 0.3, and 1.0 g/ml) significantly increased with 0.5% green tea by-product treatment compared to antibiotic treatment (p<0.05), but was significantly decreased in 0.5% green tea probiotics treatment compared to the antibiotic treatment (p<0.05). When stimulated with 1.0 g/ml Con A, splenocyte production of IL-6 from pigs treated with 0.5% green tea by-product or green tea probiotics was significantly increased compared to the antibiotic treatment group (p<0.05). Splenocyte production of TNF- after treatment with 1.0 g/ml Con A was significantly higher following 0.5% green tea probiotics treatment (p<0.05), while TNF- production after 10.0 g/ml LPS (lipopolysaccharide) was significantly higher in the 0.5% antibiotic treatment group (p<0.05). |
Keywords:
Green Tea By-product; Green Tea Probiotics; Growth Performance; Meat Quality; Immune Response; Pig |
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