【作者】 何叶如；

【导师】 郑中朝； 李焕友；

【作者基本信息】 甘肃农业大学 ， 动物营养与饲料科学， 2003， 硕士

【摘要】 本试验采用单因子分组试验设计，将64头初重约为15kg的杜长大三元杂交猪分为1个对照组和3个试验组，每组16头。通过饲养试验、消化试验、屠宰试验，研究了不同的绿色饲料添加剂（中草药A₁、小肽A₂、小肽加微生态制剂A₃）对生长育肥猪的生产性能、消化机能、胴体性状和猪肉品质的影响效果。饲养试验分15～30kg（小猪阶段）、30～60kg（中猪阶段）、60～90kg（大猪阶段）三个不同的生长阶段，并在每一个生长阶段中期进行消化试验。饲养试验结束每组屠宰4头猪（公母各半），用以测定胴体性状、猪肉品质、猪肉成分等各项指标和药物残留的理化指标。饲养试验结果表明：在不同生长阶段，四个试验组的生长肥育猪头均日增重、头均耗料量、料肉比、腹泻率存在差异（p＜0.05或p＜0.01）。消化试验结果表明：能量消化率在小猪阶段和中猪阶段的差异显著（p＜0.05或p＜0.01），在大猪阶段能量的消化率差异不显著（P＞0.05）。蛋白质消化率在三个不同生长阶段各试验组间差异显著（p＜0.05或p＜0.01）。在小猪阶段粗纤维消化率对照组与其他各组间的差异极显著（P＜0.01），在中猪阶段差异各试验组间的差异不显著（P＞0.05），在大猪阶段对照组除与中草药组的差异不显著（P＞0.05）外，与其他二个试验组的差异显著（p＜0.05）。屠宰试验和检测试验的结果表明：①不同试验饲料对生长肥育猪的胴体瘦肉率影响不显著（P＞0.05）。②不同试验饲料对生长肥育猪的胴体重、眼肌面积、后腿比例、板油重、平均膘厚的影响显著（p＜0.05），屠宰率、瘦肉率、胴体长、脂肪率的影响不显著（p＞0.05）。③不同试验饲料对生长肥育猪的蛋白质、脂肪和氨基酸含量的影响显著（p＜0.05），对水分的影响不显著（P＞0.05）。④不同试验饲料对生长肥育猪的肉质风味、系水力、大理石纹的影响显著（p＜0.05），对pH、肉色、熟肉率的影响不显著（P＞0.05）。⑤不同试验饲料对生长肥育猪的理化指标、重金属残留的影响不显著（P＞0.05）。所有猪肉的各项卫生标准、技术要求、理化指标等符合国家无公害食品—猪肉的行业标准。更多还原

【Abstract】 This study was carried out to determine the effect of three kinds of green feed additives(peptide, Chinese herb and the mixture of peptide and micronbaterical) on growth, digestion and meat quality of growing-finishing pig through feeding trail, digestion trail and analyzed trail. Sixty-four crossbred pigs (Duroc Landrace Yorkshire, 15kg originally) were randomly divided into four groups(group A1, group A2, group A3, group A4),using the designing of different factor. The feeding trail was divided into three growing stages-15-30kg growing stage,30-60kg growing stage,60-90kg growing stage to determine the growth capacity. Digestion trail was conducted during the middle period of each growing stage to determine the digestibility of the different kinds of the nutrient,four pigs of each group were slaughtered at the end of the trail to analyze the carcass characteristics, the meat quality, the component of meat and physical-chemical index of the remains. The results of the test are as follow: (1)growth period, results have showed that different green feed additives have significant effect(p<0.01 or p<0.05) on daily weight gain, feed conversion rate, radio of feed to gain of growing-finishing pig. The result of group A4 is the best. The diarrhea percentage of group A2 is the minimum among the groups (2)Digestion trail. Significant effect(p<0.05) was observed in the digestibility of protein during the different growing stage. Significant effect(p<0.05) was observed in the digestibility of energy during the 15-30kg and 30-60kg growing stage, no significant effect(p<0.05) during the 60-90kg growing stage. Extremely significant effect(p<0.01) was observed in the digestibility of crude fiber during the 15-30kg growing stage and the 60-90kg growing stage, has adverse effect(p>0.05) on energy during the 30-60kg growing stage. (3)slaughter test and analyzing test. (1)Significant effect(p>0.05) was observed in lean meat percentage.(2) No significant effect(p>0.05) was observed in meat with regard to dressing percentage,carcass length and fat percentage, significant effect(p<0.05) on loin muscle, hindquarter percentage, leaf fat and back fat. (3)No significant effects(p>0.05) were observed in the contains of water, significant effects(p<0.05) were observed in the contains of protein, lipid and amino acid.(4)No significant effect(p>0.05) was observed in pH, meat color, cooked meat percentage, significant effect(p<0.05) was observed in flavor, holding capacity and marbling.(5)No significant effect(p>0.05) was observed in physical and chemical index, remains of the heavy metal. All kinds of the sanitary index, the condition of technology and physical and chemical index have shown that the quality meat meet with the standard of no Public Harm Food.更多还原