低聚木糖对生长肥育猪生长性能、胴体性状和肉品质的影响

发布时间：2019-01-12 08:15

【摘要】：为了研究低聚木糖(XOS)对生长肥育猪生长性能、胴体性状和肉品质的影响,试验选取平均体重为30 kg左右的三元杂交猪80头,随机分为8组,每组10头,公、母各占1/2,单栏饲养。试验设对照组、抗生素组,3065 kg阶段100、250和500 g/t XOS组,以及30100 kg阶段100、250和500 g/t XOS组。分别于试验开始和结束时记录每头猪的空腹体重及采食量,计算平均日采食量(ADFI)、平均日增重(ADG)和料重比(F/G);于试猪平均体重达100 kg时屠宰采样,测定胴体性状、肉品质和肌肉化学成分。结果表明:与对照组或抗生素组相比,饲粮添加不同剂量的XOS对生长肥育猪的ADFI、ADG、F/G、胴体性状和肉品质均无显著影响(P0.05);3065 kg阶段添加250 g/t XOS可显著增加脾脏指数以及背最长肌粗蛋白质含量(P0.05);30100 kg阶段添加500 g/t XOS可显著增加脾脏指数及背最长肌粗蛋白质含量(P0.05)。综上所述,饲粮添加不同剂量的XOS虽对生长肥育猪的ADFI、ADG、F/G、胴体性状和肉品质等指标影响不显著,但可通过增加肌肉粗蛋白质含量而改善猪肉营养价值;以30100 kg阶段添加500 g/t XOS效果较佳。
[Abstract]:In order to study the effect of xylose oligosaccharide (XOS) on growth performance, carcass traits and meat quality of growing finishing pigs, 80 crossbred pigs with an average weight of 30 kg or so were selected and randomly divided into 8 groups with 10 pigs in each group, male and female accounting for 1 / 2 / 2, respectively. Single column feeding. The experiment was divided into control group, antibiotic group, 100250 and 500g / t XOS group at 3065 kg stage, and 100250 and 500g / t XOS group at 30100 kg stage. The fasting body weight and feed intake of each pig were recorded at the beginning and the end of the experiment, and the average daily intake (ADFI), average daily gain (ADG) and feed weight ratio (F / G) were calculated. The carcass traits, meat quality and muscle chemical composition were measured when the average body weight was 100 kg. The results showed that there was no significant effect on ADFI,ADG,F/G, carcass traits and meat quality of growing fattening pigs by adding different doses of XOS in diet compared with control group or antibiotic group (P0.05). Addition of 250g / t XOS at 3065 kg stage significantly increased the spleen index and the content of crude protein in the longissimus dorsi muscle (P0.05), and the addition of 500g / t XOS at the stage of 30100 kg significantly increased the spleen index and the content of crude protein of the longissimus dorsi muscle (P0.05). To sum up, although the effects of different doses of XOS on ADFI,ADG,F/G, carcass traits and meat quality of growing finishing pigs were not significant, the nutritional value of pork could be improved by increasing the content of muscle crude protein. The effect of adding 500g / t XOS at 30100 kg stage is better.
【作者单位】：湖南农业大学动物科学技术学院;中国科学院亚热带农业生态研究所亚热带农业生态过程重点实验室;山东龙力生物科技股份有限公司;
【基金】：山东龙力企业合作项目中央驻湘科研机构技术创新发展专项(2013TF3006)
【分类号】：S828.5

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