日粮中不同比例膨化玉米对保育猪生长性能、养分表观消化率、肠道形态及消化酶活性的影响  

Effect of different proportions of puffed corn in diet on growth performance,nutrient apparent digestibility,intestinal morphology and digestive enzyme activity of nursery pigs

作　　者：申时华 穆天龙 马贵林 唐于寒 SHEN Shi-hua;MU Tian-long;MA Gui-lin;TANG Yu-han

机构地区：[1]云南省昭通市镇雄县畜牧兽医站,云南昭通657200 [2]云南省昭通市畜牧兽医技术推广站,云南邵通657000

出　　处：《饲料研究》2022年第4期35-39,共5页Feed Research

摘　　要：试验旨在研究在日粮中添加不同比例膨化玉米对保育猪的生长性能、养分表观消化率、肠道形态及消化酶活性的影响。选用体重(9.50±1.05) kg的“杜×长×大”保育猪200头,随机分为对照组、试验1组、试验2组、试验3组,每组5个重复,每个重复10头猪。对照组保育猪饲喂基础日粮,试验1组、2组、3组保育猪饲喂不同比例膨化玉米替代玉米的日粮,替代比例分别为10%、20%、30%。预试期5 d,正式试验期28 d。结果显示:与对照组相比,试验2组、3组的保育猪的末重和平均日增重均显著提高(P<0.05),料重比显著降低(P<0.05);试验3组保育猪的平均日采食量显著高于对照组(P<0.05)。试验2组、3组保育猪的有机物消化率显著高于对照组(P<0.05);试验3组保育猪的粗淀粉消化率显著高于对照组(P<0.05)。试验3组保育猪的十二指肠绒毛高度和黏膜厚度显著高于对照组(P<0.05),回肠黏膜厚度显著高于对照组(P<0.05),空肠隐窝深度显著低于对照组(P<0.05)。试验3组保育猪的胰腺、十二指肠、空肠、回肠淀粉酶活性均显著高于对照组(P<0.05)。研究表明,膨化玉米能够促进保育猪生长,提高保育猪对饲料的消化利用,延缓肠道绒毛萎缩,增加黏膜壁厚度,提高胰腺和肠道淀粉酶的活性,添加比例效果优良顺序为30%>20%>10%。The study was to study the effect of adding different proportions of puffed corn in diet on growth performance,nutrient apparent digestibility, intestinal morphology and digestive enzyme activities of nursery pigs. 200 pigs with(9.50±1.05) kg were selected and randomly divided into control group, group 1, group 2 and group 3, with five replicates in each group and ten pigs in each replicate. The nursery pigs in control group were fed with basal diet, and the nursery pigs in group 1, group 2 and group 3 were fed with diet with different ratios of puffed corn instead of corn. The replacement ratios were 10%, 20% and 30%, respectively. The pretrial period was 5 d, and the formal test period was 28 d.The results showed that compared with control group, the final weight and average daily gain of nursery pigs in group 2,group 3 were significantly increased(P>0.05), the feed to gain ratio was significantly reduced(P<0.05). The average daily feed intake of nursery pigs in group 3 was significantly higher than in control group(P<0.05). The organic matter digestibility of nursery pigs in group 2 and group 3 were significantly higher than that in control group(P<0.05). Crude starch digestibility of nursery pigs in group 3 was significantly higher than that in control group(P<0.05). The duodenal villi height and mucosal thickness of nursery pigs in group 3 was significantly higher than that in control group(P<0.05),the ileum mucosal thickness was significantly higher than in control group(P<0.05), the crypt depth of the jejunum was significantly lower than that in control group(P<0.05). The amylase activities of the pancreas, duodenum, jejunum, and ileum of nursery pigs in group 3 was significantly higher than those in control group(P<0.05).The experiment indicates that puffed corn can promote the growth of nursery pigs, improve digestion and utilization of feed, delay the atrophy of intestinal villi, increase the thickness of the mucosal wall, increase the activity of pancreatic and intestinal amylases.Absorption and utili

关 键 词：保育猪 膨化玉米 生长性能 养分表观消化率 肠道形态 消化酶活性 

分 类 号：S828[农业科学—畜牧学]