对氨基苯胂酸对猪消化道及日粮营养物质消化率的影响

本试验以9头25kg左右的二元杂交阉公猪为试验动物,采用消化试验(全收粪法)以及屠宰后检测小肠肠壁组织的方法,通过对生长猪消化道肠壁组织以及猪对日粮营养物质消化作用的研究,探讨了日粮中添加60mg/kg对氨基苯胂酸对生长猪消化机能的某些影响。研究结果表明:与对照组或土霉素碱组日粮相比较。日粮中添加60mg/kg浓度的对氨基苯胂酸能够更好的促进生长猪的消化能力;并使干物质、有机物质和粗蛋白质的消化率分别较对照组日粮提高3.42％、2.35％和4.33％,使能量利用率提高2.51％,且各种氨基酸的利用率也得到相应的改善;同时,添加对氨基苯胂酸对猪消化道(十二指肠、空肠和回肠)肠壁组织(粘膜高度、腺体高度、腺体数、粘膜下层、肌层以及浆膜等)能更好的吸收营养物质也产生了较好的促进作用。

EFFECTS OF ARSANILIC ACID ON DIGESTIVE TRACT OF PIGS AND NUTRIENT DIGESTIBILITY OF THEIR DIETS

In this paper, nine growing pigs(25kg) were divided into three groups for the tests of nutrient digestibility in a basic diet, diet containing 60mg/kg of Arsanilic acid and diet containing 100mg / kg of Terramycin, respectively. By the end of the digestion tests, 1 of the 3 pigs in each group(more than 80kg) was slaughtered for the tissue parameter deter-mination of the small intestine in the growing pigs.The results of the experiments showed that 60mg/kg Arsanilic acid could improve the feed utilization efficiency of growing pigs and increased digestibilities by 3.42%for DM,2.35% for OM,4.33% for CP and 2.51% for GE as compared to the control .respectively. The utilization efficiency of amino acids was also increased. Morever, adding the Arsanilic acid had promotive effects on the absorbing ability of the intestine tissues to nutrients.