Dietary supplementation with betaine or glycine improves the carcass trait,meat quality and lipid metabolism of finishing mini-pigs |
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| Authors: | Yinzhao Zhong Zhaoming Yan Bo Song Changbing Zheng Yehui Duan Xiangfeng Kong JinPing Deng Fengna Li |
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| Institution: | Guangdong Provincial Key Laboratory of Animal Nutrition Regulation,South China Agricultural University,Guangzhou 510642,China;Hunan Provincial Key Laboratory of Animal Nutritional Physiology and Metabolic Process,Changsha 410125,Chino;Key Laboratory of Agro-ecological Processes in Subtropical Region,Institute of Subtropical Agriculture,Chinese Academy of Sciences,Changsha 410125,China;Hunan Provincial Engineering Research Center for Healthy Livestock and Poultry Production,Changsha 410125,China;National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production,Changsha 410125,China;Scientific Observing and Experimental Station of Animal Nutrition and Feed Science in South-Central,Ministry of Agriculture,Changsha 410125,China;University of Chinese Academy of Sciences,Beijing 100039,China;College of Animal Science and Technology,Hunan Agricultural University,Changsha 410128,China;Guangdong Provincial Key Laboratory of Animal Nutrition Regulation,South China Agricultural University,Guangzhou 510642,China;Hunan Provincial Key Laboratory of Animal Nutritional Physiology and Metabolic Process,Changsha 410125,Chino;Key Laboratory of Agro-ecological Processes in Subtropical Region,Institute of Subtropical Agriculture,Chinese Academy of Sciences,Changsha 410125,China;Hunan Provincial Engineering Research Center for Healthy Livestock and Poultry Production,Changsha 410125,China;National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production,Changsha 410125,China;Scientific Observing and Experimental Station of Animal Nutrition and Feed Science in South-Central,Ministry of Agriculture,Changsha 410125,China |
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| Abstract: | The objective of the study is to evaluate and compare the effects of betaine or glycine on carcass trait, meat quality and lipid metabolism of finishing Huan Jiang mini-pigs. Betaine called trimethylglycine is a methyl derivative of glycine, but few researches were conducted to compare the impact of dietary betaine and glycine on pigs. One hundred and forty-four Huan Jiang mini-pigs (body weight = 10.55 ± 0.15 kg; 70 d) were randomly divided to 3 treatment groups (basal diet, glycine or betaine). Results indicated that dietary betaine increased the average daily gain (ADG) and final weight (P < 0.05). Dietary glycine or betaine markedly reduced average backfat thickness (P < 0.05) and heightened lean percentage (P < 0.01) compared to the control group. Moreover, in comparison with the control group, betaine significantly improved the redness (a?) and tenderness (shear force) of the longissimus dorsi (LD) muscle (P < 0.05), whereas glycine only raised the value of a? of the LD muscle (P < 0.05). These results showed that diet supplemented with 0.25% betaine and equimolar amounts of glycine could regulate cascass trait and meat quality of finishing Huan Jiang mini-pigs, and the effect of betaine was superior to that of glycine. |
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| Keywords: | Betaine Glycine Meat quality Lipid metabolism Huan jiang mini-pig |
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