| 摘要: |
| 【目的】探讨中草药抗热应激剂对夏季蛋鸡生产性能、蛋品质及血液生化指标的影响。【方法】选取480只310日龄健康、体质量和生产性能相近的罗曼褐蛋鸡，随机分为4组，每组120只，每组设4个重复，每重复30只，I组为对照组(CK)，饲喂基础日粮；Ⅱ、Ⅲ、Ⅳ组为试验组，分别在基础日粮中添加4，8，12 g/kg自制中草药抗热应激剂，分析其对蛋鸡生产性能、蛋品质及血液生化指标的影响。【结果】夏季在日粮中添加中草药抗热应激剂，可显著提高蛋鸡的采食量、产蛋率、平均蛋质量，降低料蛋比、破蛋率和死淘率；改善蛋壳厚度、蛋壳强度及蛋黄颜色，且差异显著(P＜0.05)，但对蛋形指数、蛋体积质量、哈氏单位的影响不显著；可明显提高血清中总蛋白、白蛋白质量浓度和血糖、血脂、钙、钾、三碘甲腺原氨酸、甲状腺素的浓度，降低血清中皮质醇质量浓度和谷草转氨酶、谷丙转氨酶、乳酸脱氢酶、肌酸磷酸激酶的活性，提高碱性磷酸酶的活性。【结论】夏季在蛋鸡日粮中添加中草药抗热应激剂，可以提高蛋鸡的生产性能、蛋品质，降低死淘率，改善蛋鸡血液生化指标。 |
| 关键词: 中草药 热应激 蛋鸡 生产性能 血液生化指标 |
| DOI： |
| 分类号: |
| 基金项目:山东省临沂市科技攻关计划项目(736015) |
|
| Effects of Chinese herbal medicine additives of anti-heat stress on production performance,egg quality and blood biochemical indexes of laying hens |
|
|
| Abstract: |
| 【Objective】The research was conducted to study the effects of Chinese herbal medicine additives of anti-heat stress on production performance,egg quality and blood biochemical indexes of laying hens in summer.【Method】480 Roman hens of 310-day-old were randomly divided into 4 groups (120 hens in each group,4 replicates with 30 layers in each).Group I was fed the basal diet as control (CK).The experiment group Ⅱ,Ⅲ,Ⅳ were fed 4,8,12 g/kg Chinese herbal medicine additives of anti-heat stress on the basal diet,respectively.At the end of experiment,production performance,egg quality,blood biochemical indexes were measured.【Result】Chinese herbal medicine additives of anti-heat stress increased feed intake,laying rate and average egg weight,decreased feed/egg ratio,egg broken ratio,mortality,increased eggshell thickness,eggshell strength,yolk color(P<0.05).But egg shape index,egg specific density,haugh unit were not significantly affected.The serum TP,ALB,GLU,TG,Ca2+,K+,T3 and T4 were increased,concentration of serum cortisol and activity of AST,ALT,LDH,CK decreased,activity of ALP increased.【Conclusion】Chinese herbal medicine additives of anti-heat stress could increase laying performance,egg quality,decrease mortality,and improve blood biochemical indexes in layers. |
| Key words: Chinese herbal medicine heat stress laying hens laying performance blood biochemical indexes |
