日粮营养水平对临高猪H-FABP基因表达量和肉品质的影响

Effect of Dietary Nutrition Levels on H-FABP Gene Expression and Pork Quality in Lingao Pigs

为探讨日粮营养水平对临高猪生产性能、心型脂肪酸结合蛋白基因(H-FABP)表达量和肉品质的影响。挑选48头体质量为(34.54±1.58)kg的阉割临高母猪,随机分为2组,每组设4个重复,每个重复6头猪,分别饲喂高(DE 12.50 MJ/kg、CP 15.50%)、低(DE 11.60 MJ/kg、CP13.00%)2种营养水平的日粮,至体质量达到约85 kg时,每重复挑选1头(共8头)体质量接近平均体质量的临高猪进行屠宰,测定临高猪的生产性能、H-FABP基因表达量及肉品质。结果表明:高、低2种营养水平的日粮对临高猪生产性能的影响不显著;与高营养水平日粮相比,低营养水平日粮可显著提高临高猪H-FABP基因表达量及熟肉率,提高临高猪肌内脂肪含量、减少滴水损失、降低肌肉p H值。临高猪H-FABP基因表达量与肌内脂肪含量呈正相关。可见,日粮营养水平对临高猪H-FABP基因表达量和肉品质产生重要影响。

The experiment was conducted to study the effect of nutritional level on growth performance,H- FABP gene expression and pork quality in Lingao pigs, 48 Lingao pigs [ （34. 54 ± 1. 58） kg] were randomly divided into two groups with diets of high （ DE of 12.50 MJ/kg,CP of 15.50 % ） and low （ DE of 11.60 MJ/kg, CP of 13.00 % ） nutritional level,respectively. Each repeat 1 and total 8 pigs were slaughtered when their weight were about 85 kg, and determined H-FABP gene expression and meat quality traits. The results showed that the growth performance of Lingao pigs was not significantly influence of high and low nutritional levels in the diet, low nutritional level significant increased H-FABP gene expression,significant increased the rate of cooked meat in Lingao pigs, increased intramuscular fat, reduced drip loss and slow muscle acidification （pH）. In conclusion, nutritional level influenced H-FABP gene expression and so influenced meat quality in Lingao pigs, H-FABP gene expression and intramuscular fat content in Lingao pigs were positively relevant.