【作者】 郑桂红；

【导师】 张伟力；

【作者基本信息】 安徽农业大学 ， 动物营养与饲料科学， 2003， 硕士

【摘要】 本试验选用1日龄固始鸡4C雏鸡540只，随机分成9组，每组60只。采用3×3因子设计，它们分别是组Ⅰ(V_E0，V_C0，对照组)、组Ⅱ(V_E0，V_C100mg／kg)、组Ⅲ(V_E0，V_{C200 mg／kg})、组Ⅳ(V_{E100 mg／kg}，V_C0)、组Ⅴ(V_{E100 mg／kg}，V_{C100 mg／kg}、组Ⅵ(V_E100，V_{C200 mg／kg})、组Ⅶ(V_E200，V_C0)、组Ⅷ(V_{E200 mg／kg}，V_{C100 mg／kg})、组Ⅸ(V_E200，V_{C200 mg／kg})。试验预试期为1周，正式期为6周。玉米-豆粕型基础饲粮中含V_E23-27 mg／kg。通过测定固始鸡4C商品代肉鸡生长性能、胴体性能、肉质参数和免疫学指标，比较不同的V_E和V_C添加水平对固始鸡4C商品代肉鸡生产性能的影响。 结果表明，饲粮中添加200 mg／kg V_C（组Ⅲ）可以显著提高4周龄末的体重（P＜0.05）。100 mg／kg V_C和100／200 mg／kg V_E添加组（组Ⅴ和组Ⅷ）以及100 mg／kg V_E和100／200 mg／kg V_C添加组（组Ⅴ和组Ⅵ）对4周龄末鸡的平均体重表现出显著的互作效应（P＜0.05）。100／200 mg／kg V_E和100／200mg／kg V_C添加组（组Ⅴ、组Ⅵ、组Ⅶ、组Ⅷ）对平均日增重和饲料转化率的互作效应优于饲料中单独添加100／200mg／kg V_E（组Ⅳ、组Ⅶ）和单独添加100／200mg／kg V_C（组Ⅱ、组Ⅲ）对平均日增重和饲料转化率作用。饲粮中添加不同水平组合的V_E和V_C对6周末、7周末鸡的平均体重、平均日增重和饲料转化效率的影响和4周末的结果相似。 与其它试验组和对照组相比，饲粮中添加200mg／kg V_C（组Ⅲ）可以显著提高鸡的屠宰率（P＜0.05）。200mg／kg V_E与100mg／kg V_C（组Ⅷ）的互作对改进屠宰率的效应显著（P＜0.05）。饲粮中添加不同水平组合的V_E和V_C对其它屠宰性能也表现出一定的改善作用。 与饲粮中添加0／100 mg／kg V_C／200 mg／kg V_C（组Ⅰ、组Ⅱ、组Ⅲ）相比，饲粮中同时添加200 mg／kg V_E和200 mg／kg V_C（组Ⅸ）对14日龄测定的ND滴度表现出显著的互作效应（P＜0.05）；组Ⅶ（200mg／kg V_E）显著高于组Ⅲ（200mg／kg V_C）及对照组的28日龄血清球／清（P＜0.05）。在各测定期，其它V_E添加组或同时添加V_E和V_C组对机体的免疫学指标虽然有一定的改善趋势，但和对照组的差异不显著（P＞0.05）。 100／200mg／kg V_E和100／200mg／kg V_C添加组（组Ⅴ、组Ⅵ、组Ⅶ、组Ⅷ）对改善胸肌的滴水损失有显著的协同效应（P＜0.05）。其它各处理对胸肌的滴水损失的改善作用和对照组差异不显著（P＞0.05）。与对照组以及组Ⅲ相比，饲粮中添加200mg／kg V_E和100mg／kg V_C／200 mg／kg V_C（组Ⅷ、组Ⅸ）组的协同作用可以显著提高胸肌的拿破率（P＜0.05）。饲粮中添加0／100／200 mg／kg V_E和100／200 mg／kg V_C组的各种处理可以显著提高屠宰后24小时、48小时的＜’值，降低屠宰后24小时、帐小时的才值和L‘值O叼．05卜各试验组和对照组相 土，可以显著降低 贮存 14 天腿肌的 TBARS 值。200mg／kgV卜和200mg八gV。、（组 k）对贮存］4 天肝脏中的 TBARS 有显著的协同作用（P＜0＊5）。100／200mg／kgV。和 100／200 mg／kgVC（组 V、组 VI、组 Vlll、组 JX）的互作效应可以显著降低贮存胸肉中可溶性蛋白的水平什＜0．05卜 上面的结果表明饲粮中分别添加Vf；、VC或者同时添加V。和VC在不同程度上可以降低肌肉的滴水损失，稳定肉色和防止贮存肉的脂质过氧化程度，延长货架期。 组V、组VI、组Vlll、组IX与对照组相比，可以显著提高42日龄鸡血清中以＊ 的活性仆＜0．0别。组V、组w、组W、组皿和组K可以显著提高同期测定的血清(； S ［卜 P X活性（I。＜0．0 5）。本试验结果提示饲粮中添加 V。和 V；在一定程度上具有清除自由基、加强抗氧化的正面效应。 在标准化NRC饲粮营养水平下，对8日龄至49日龄的固始鸡dC商品代肉鸡添加适量的VE、VC，在一定程度上有改善生长、胭体、免疫、肉质四个方面的技术参数指标的正面作用，并在一定的组合条件下显示出相当的互作效应。更多还原

【Abstract】 A total of 540 one-day-old Gushi 4C broiler chickens were randomly allocated to nine treatments with 60 broilers for each treatment. A 3X3 factorial design was used.They were treatment I (VE0. VC0.control), treatment II (VE0. VC100mg/kg), treatmentIII(VE0. VC200mg/kg), treatmentVI(VE100 mg/kg. VC0), treatment V (VE100 mg/kg. VC100 mg/kg), treatmentVI (VE100. VC200 mg/kg), treatment VII (VE200, Vc0) treatmentVIII(VE200 mg/kg. VC100 mg/kg), treatmentIX(VE200, VC200 mg/kg) seperately. The prefeeding phase of the experiment was one week, the trial feeding phase was six weeks. The vitamin E concentration in the corn-soybean basic diet was 23-27mg/kg. The experiment was conducted to evaluate the influence of vitamin E and vitamin C different dietary levels on Gushi 4C broilers’ performances by investigating the influence of vitamin E and vitamin C on growth performances, slaughter parameters, immunity parameters and meat quality parameters.The results showed that, the body weights at four weeks were improved significantly by 200mg/kg vitamin C addition (treatmentIII) (P<0.05). The statistically significant interactions between 100mg/kg vitamin C and 100/200mg/kg vitamin E(treatment V ,VIII), and between 100mg/kg vitamin E and 100/200mg/kg vitamin C (treatment V ,VI) for the body weight at four weeks were obtained (P<0.05).The interactions between 100/200mg/kg vitamin E and 100/200mg/kg vitamin C(treatment V , VI , VII, VIII) for daily gain and feed conversion rate were superior to those of 1 00/200mg/kg vitamin E(treatment IV, VII ) and to those 100/200mg/kg vitamin C(treatment II ,III). The influence of combination of vitamin E and vitamin C at supplemental levels on body weight, daily gain and feed conversion rate at six or seven weeks w:as similar to that at 4 weeks.The dressing percentages of the broilers fed 200mg/kg vitamin C(treatmentIII)were better than those of other treated groups and those of the control(P<0.05). The significant interaction between 200mg/kg supplemental vitamin E and 100mg/kg supplemental vitamin C (treatment III ) for improving dressing percentage was observed (P<0.05). Carcass parameters were improved to some extent for vitamin E and vitamin C different concentrations.Because of interaction ,better ND liters at 14 days for both supplemental 200mg/kg vitamin E and 200mg/kg vitamin C (treatmentlX) was observed than those of 0,100mg/kg,200mg/kg supplemental vitamin C separately ( treatment I . II .III) (P<0.05). The serum GIobulin/Albulin of the treatmentVII ( 200mg/kgVi:) was higher than that of the treatmentHK 200 mg/kgVc)at 28 days of age(P<0.05). There was a tendency that immunity parameters were improved by supplemental vitamin E or combined supplemental vitamin E and vitamin C in every measurements, howere the improvement was not significant(P>0.05).Significant differences were obtained for improving the drip loss of the breast muscle by the interaction between 100/200mg/kg supplemental vitamin E and 100/200mg/kg supplemental vitamin C (P<0.05). No significant improvements for the breast muscle drip loss (P>0.05) were detected between other treated groups and the control. The interaction between 200mg/kg supplemental vitamin E and 100/200mg/kg supplemental vitamin C(treatmentVi, IX )for improving the Napole yield of breast muscle was better than that of the control and that of the treatment III(P<0.05).The a* value of the breast muscle at 24 and 48 hours post moterm was significantly improved, and b value and L value of the breast muscle at 24 and 48 hours post moterm were significantly minimized in every treated groups of 0/100/200 mg/kg supplemental vitamin E and 100/200mg/kg supplemental vitamin C. The TEARS values of the thigh muscle stored for 14 days in treated groups were lower than the control(P<0.05), but the significant interaction for decreasing the TEARS value of the liver stored for 14 days was observed between 200mg/kg vitamin E and 200 mg/kg vitamin C only (treatment IX ) (P<0.05). The transmission value of the breast muscle stored更多还原