摘要
【目的】研究甘草提取物对肥育猪生长性能、胴体性状及肉品质的影响。【方法】选取体重约60 kg杜长大三元杂交猪240头,随机分成4个组,每组3个重复,每个重复20头。对照组饲喂基础饲粮,处理组分别在基础饲粮中添加300、600和900 mg/kg甘草提取物,试验期12周。【结果】添加不同水平甘草提取物对肥育猪末重、平均日增重、平均日采食量、料重比、成活率均无显著影响(P>0.05),但900mg/kg组的末重、平均日增重最高;肥育猪的屠宰率、胴体长和瘦肉率在4个组间差异不显著(P>0.05);900 mg/kg添加组的眼肌面积得到显著提高(P<0.05);添加甘草提取物提高了肌肉中粗蛋白和粗脂肪含量但没有达到显著水平(P>0.05),肌肉中氨基酸含量在不同组间差异不显著(P>0.05);饲粮中添加甘草提取物可显著的提高肌肉中油酸的含量(P<0.05),且添加甘草提取物与油酸含量呈极显著的线性关系(P<0.01),600、900 mg/kg添加组育肥猪肌肉中不饱和脂肪酸的含量显著高于对照组(P<0.05);600、900 mg/kg添加组饱和脂肪酸的含量显著低于对照组(P<0.05)。【结论】在肥育猪饲粮中添加甘草提取物不影响肥育猪的生长性能,提高了肥育猪的眼肌面积,增加肌肉中不饱和脂肪酸含量,改善了肉质。综合试验中育肥猪生长性能、肉质性状等指标,建议生长育肥猪中甘草提取物饲料中适宜添加量为900mg/kg。
【Objective】This study was conducted to investigate the effects of licorice extracts on growth performance,carcass traits and meat quality of fattening pigs.【Method】240 hybrid pigs with similar weight of 60 kg were randomly divided into 4 groups with 3 replicates per group and 20 pigs per repli-cate.Abasaldietwithoutlicoriceextracts(thecontrolgroup)and3experimentaldietssupplementedwith 300, 600 and 900 mg/kg licorice extracts based on the basal diet,respectively,were used in this study. The experiment lasted for 12 weeks.【Result】There were no significant effects on average daily gain,average daily feed intake,feed/gain ratio or survival rate (P>0.05),however,pigs in 900 mg/kg licorice extracts group had the highest slaughter weight and average daily gain. Dressing percentage,lean percentage and carcass length of fattening pigs were not significantly different between the four groups (P>0.05). Lion mus-cle area of pigs in the 900 mg/kg licorice extracts group was significantly increased (P<0.05) compared with the control group. Protein and fat contents were increased after licorice extracts supplementation (P>0.05). There were no significant difference in the amino acids contents between four groups (P>0.05). C18:1 content of pigs in the 600 mg/kg licorice extracts group and 900 mg/kg licorice extracts group was significantly higher than that of the control group (P<0.05). Besides,there was a very significant line regression re-lationship between licorice extracts and C18:1 content (P<0.01). Unsaturated fatty acid content in pigs of 600 mg/kg licorice extracts group and 900 mg/kg licorice extracts group was significantly higher than that of the control group (P<0.05),saturated fatty acid contents of pigs in 600 mg/kg licorice extracts group and 900 mg/kg licorice extractsgroup were significantly lower than that of the control group (P<0.05).【Conclusion】 The addition of licorice extract into the basal diet of finishing pigs could improve loin muscle area,unsat-urated fatty acid content and meat quality without altering growth performance in finishing pigs. According to growth performance and pork quality,the recommended dose of licorice extracts is 900 mg/kg in the present experiment.
作者
罗宗刚
王玲
杨远新
饶骏
汪冠军
魏百钰
LUO Zonggang;WANG Ling;YANG Yuanxin;RAO Jun;WANG Guanjun;WEI Baiyu(College of Animal Science, Southwest University,Rongchang 402460,Chongqing,China;Chongqing ZhongxianMeijianda Agricultural Development Co.,Ltd.,Zhongxian 404300,Chongqing,China;Animal Husbandry and Aquaculture Bureau of Pingshan County,Yibin 645350,Sichuan,China)
出处
《四川农业大学学报》
CSCD
北大核心
2019年第2期208-214,共7页
Journal of Sichuan Agricultural University
基金
西南大学博士基金(2013Bsr8)
西南大学与重庆市忠县合作项目(41005617)
关键词
甘草提取物
生长肥育猪
生长速度
胴体性状
肉品质
licorice extracts
finishing pigs
growth performance
carcass traits
pork quality
