环腺苷酸制剂对生长育肥猪生长性能和肉脂品质的影响

Effect of dbcAMP on the Growing Performance and Carcass Characteristics and Meat Features in Growing and Finishing Pigs

关键词:  生长育肥猪  生长性能  胴体品质  肉质特性  二丁酰cAMP

Key words:  growing and finishing pigs  growth performance  carcass characteristics  meat features  dbcAMP

摘要:

选用20kg左右的"杜长"元杂交猪24头,随机分成1个对照组、3个试验组,试验组分别添加环腺苷酸制剂(二丁酰cAMP)10mg/kg(试验1组)、20mg/kg(试验2组)、30mg/kg(试验3组),进行饲养试验、屠宰试验和肉的品质测定。结果表明:添加二丁酰cAMP,能提高生长育肥猪的生长性能和改善肉脂品质。以添加二丁酰cAMP 20mg/kg效果最好,与对照组相比,日增重提高11.80%(P<0.01),料重比降低16.4%(P<0.01),胴体瘦肉率提高8.12%(P<0.05),眼肌面积增加11.98%(P<0.05),平均背膘厚下降18.90%(P<0.01);大理石纹评分提高11.66%(P<0.01);肌肉间脂肪含量提高28.88%(P<0.01)。

Abstract:

24 growing and finishing pigs(Duroc×Landrace 20 kg initially) were assigned into one control group and three test groups. Fed basic diet supplemented with dbcAMP10、20、30 mg/kg for test group 1,test group 2,and test group 3 respectively. The results showed that dbcAMP can improve the growing performance,the carcass characteristics and meat features of growing and finishing pigs. It shows that supplement with dbcAMP 20 mg/kg,comparing to the control group,ADG increasing about 11.80%(P<0.01) and and FCR decreasing about 16.4%(P<0.01);the lean meat percentage increasing about 8.12%(P<0.05) and the rib eye areas increasing about 11.98% (P<0.05),the mean backfat depth decreasing about 18.90% (P<0.01). It also shows that the marbling grade of musclar increases 11.66%(P<0.01),and the content of intramusclar fat increases 28.88%(P<0.01).