不同日粮淀粉类型对育肥猪生长性能和肉品质的影响
毕业论文关键词：淀粉类型；育肥猪；生长性能；肉品质
Effect of dietary starch types on growth performance and meat quality of finishing pigs
Student majoring in Animal Science Ye hao
Tutor Zhang lin
Abstract：The purpose of this experiment was to determine the effect of dietary starchtypes on growth performance and meat quality of finishing pigs. Ninety barrow pigs with an average initial body weight of 68kg were selected and randomly pided into three dietary treatments with five pens per treatment and six pigs per pen..The trail diets were formulated to meet the nutrient requirements for 75-100kg pigs (NRC2012).Pure waxy maize starch (WMS), nonwaxy maize starch (NMS) and pea starch (PS) served as the starch source,andthe dietary amylose to amylopectin ratio were 0.07、0.19 and0.28, respectively. At the end of the 28 days feeding, after a 12h fast, pigs were weighed,slaughtered andmuscle samples were collected to measure the growth performance and meat quality. The results showed that pigs fed with PS diet significantly increased average daily gain (ADG) and reduce the F/G (P<0.05)compared withWMSdiet(P<0.05). However,there was no significant difference in average daily feed intake(ADFI)among the three groups(P>0.05). In terms of meat quality, compared to the WMS diet and NMS diet,PS diet significantly increased pH45min value(P<0.05) and decreased drip loss(P<0.05) inthe longissimus muscle. Cooking loss in M. longissimus lumborumof PS diet was significantly lower than the WMS diet (P<0.05). However, different diets had no effect on pH24h. (L*, a*,b*) and shear force(P>0.05).Conclusion: compared with the WMS diet, the finishing pigs fed with PS diet could improvedgrowth performance andmeat quality.
Keywords:starch types; finishing pig; growth performance; meat quality
目 录
摘要 3
关键词 3
Abstract： 3
Key words: 4
引言 4
1 材料与方法 4
1.1 试验材料 4
1.2 试验设计 4
1.2.1 饲养管理及分组 4
1.2.2 样本采集 6
1.3 检测指标 6
1.3.1 日粮直链淀粉/支链淀粉比例测定 6
1.3.2 猪生长性能测定 6
1.3.3 猪肉品质指标的测定 6
1.4 统计方法 7
2 结果与分析 7
2.1 不同日粮淀粉类型对猪生长性能的影响 7