金属蛋白酶制剂对育肥猪生产性能的影响

【作者】 文玉兰；

【导师】 李洪龙；

【作者基本信息】 延边大学 ， 动物营养与饲料科学， 2005， 硕士

【摘要】 试验一、金属蛋白酶制剂对仔猪生产性能的影响 本实验选择平均日龄为40天的仔猪30头(杜×长×约杂交),平均体重约为11kg,按完全随机分组法分成三个组(经检验组间差异不显著),每组10头猪,在试验组1添加0.05%金属蛋白酶制剂、试验组2添加0.1%金属蛋白酶制剂,对照组不加,进行自仔猪生长至30kg为止的为期43天的饲养试验,研究金属蛋白酶制剂对仔猪的生产性能。结果表明: 1)金属蛋白酶制剂可提高仔猪的饲料利用率(P<0.01),但增重效果差异不显著(P>0.05);可提高粗蛋白、粗脂肪的表观消化率(P<0.05)。 2)试验组的毛色光亮、无分叉、肤色红润、肌肉丰满、体格发育好。 试验二、金属蛋白酶制剂对育肥猪生产性能的影响 本实验选择平均日龄约为130天、平均体重约为60kg的54头育肥猪(杜×长×约杂交),按完全随机分组法分成6个组(经检验组间差异不显著),每组9头,在试验组1添加0.05%金属蛋白酶制剂,试验组2添加0.1%金属蛋白酶制剂,进行为期40天的饲养试验,研究金属蛋白酶制剂对育肥猪的生产性能。结果表明: 1)金属蛋白酶制剂可提高育肥猪的日增重(P<0.05)和饲料利用率(P<0.01),提高粗蛋白、粗脂肪、粗纤维、磷的表观消化率,但降低试验组的粗灰分表观消化率(P<0.05),提高试验组1的钙表观消化率(P<0.05)。 2)金属蛋白酶制剂可提高丙氨酸氨基转移酶、血清总蛋白、淀粉酶,以及提高试验组2的碱性磷酸酶、血清乳酸脱氢酶、血清钙(P<0.05);降低血清葡萄糖、试验组1的尿素氮、试验组2的血清磷(P<0.05)。 3)金属蛋白酶制剂可提高试验组的眼肌面积、里脊重、胴体重、屠宰率;减少系水力(P<0.05);使育肥猪的毛色光亮、无分叉、肤色红润、肌肉丰满;但器官重无显著变化(P>0.05)。 4)0.1%金属蛋白酶制剂可提高肉豆寇酸、花生酸十七碳酸、棕榈油酸油酸含量(P<0.05);降低棕榈酸、总饱和脂肪酸含量(P<0.05),还出现少量的二十碳五烯酸EPA和二十二碳六烯酸DHA。更多还原

【Abstract】 Experiment one:Effects of metalloprotease on Piglets ProductivityIn current study, thirty 40-day-old piglets with average bodyweight 11kg were divided randomly into three groups, 10 piglets per group (There is no significant difference between the three groups by statistical analyzing). The basic diet of testing group 1 was supplemented with 0.05% metalloprotease and the testing group 2 with 0.1% metalloptease. The control group was not fed with any metalloptease. Feed experiment lasted for 43 days until the body weight of the piglets increased to 30kg. The results were shown as follows:1) The utilization ratio of feed was significantly increased (p<0.01) by addition of metalloptease in the diets of testing groups, but the body weights of piglets in the testing group were not significantly increased (p>0.05); The outward digestion ratios of crude protein and crude fat in testing group were significantly increased (p<0.05),2) Brightness hair、 florid complexion 、 plumpy muscles and good body were observed in the test groups.Experiment two:Effects of metalloprotease on Fattening Pigs ProductivityFifty-four 130-day-old pigs with average weight 60kg were divided into six groups depending on the close body weight, similar cote, healthy body, close genetic, same sex, and average days were 130 days. The basic diet of testing group 1 was supplemented with 0.05% metalloprotease. And testing group 2 with 0.1% metalloprotease. The control group was not fed with any metalloptease. Feed experiment lasted for 40 days until the pigs to be sold. The effects of metalloprotease on productivity, biochemical characters of blood, carcass quality, meat characteristicsand dejecta quantity of the pigs were studied in this experiment.The results were shown as follows:l)The daily body gain(p<0.05) and utilization rate (P<0.01) of feed were significantly increased; The outward digestion rates of crude protein, crude fat, crude fiber and phosphorus in test 1 and 2 were increased, but the digestion rate of crude ash was reduced in group 2 (p<0.05), the digestion rate of calcium was increased (p<0.05).2)The propyl, serum protein and amylase were all increased in groups 1 and 2, serum alkalescent and serum calcium were both increased in group 2 (p<0.05). Serum glucose in group 1 and 2 and azoturia in group 1 and serum phosphorus in group 2 were reduced (P<0.05).3)Body weight, slaughter rate, eye muscle area, body length and average weight were all increased (p<0.05), brightness hair without cross, florid complexion, plumpy muscles and good body were observed in the testing groups;but viscera weight was not significantly changed (p>0.05).4) 0.1% metalloprotease can increase the contents of nutmeg acid> palm oil acid ^ oleic acid(P<0.05), palm acid the total saturated fatty acid(p<0.05) were reduced, little EPA and DHA were appeared.更多还原