中国农业科学 ›› 2012, Vol. 45 ›› Issue (5): 951-957.doi: 10.3864/j.issn.0578-1752.2012.05.016

• 畜牧·资源昆虫 • 上一篇    下一篇

单色光间歇性刺激胚蛋对肉仔鸡胸肉生长及肉品质的影响

 张林, 张海军, 武书庚, 岳洪源, 姚军虎, 齐广海   

  1. 1.西北农林科技大学动物科技学院,陕西杨凌 712100
    2.中国农业科学院饲料研究所/农业部饲料生物技术重点开放实验室,北京 100081
  • 收稿日期:2011-10-17 出版日期:2012-03-01 发布日期:2011-11-25
  • 通讯作者: 通信作者姚军虎,E-mail:yaojunhu2004@sohu.com;通信作者齐广海,E-mail:qiguanghai@mail.caas.net.cn
  • 作者简介:张 林,Tel:010-82106097;E-mail:zhanglinsx2005@sohu.com
  • 基金资助:

    国家自然科学基金项目(31072048)、北京市自然科学基金项目(6102022)、国家科技支撑计划(2011BAD26B04)、家禽产业技术体系北京创新团队

Effect of Intermittently Monochromatic Light Stimuli During the Embryogenesis on Breast Muscular Growth and Meat Quality in Male Broiler Chicks

 ZHANG  Lin, ZHANG  Hai-Jun, WU  Shu-Geng, YUE  Hong-Yuan, YAO  Jun-Hu, QI  Guang-Hai   

  1. 1.西北农林科技大学动物科技学院,陕西杨凌 712100
    2.中国农业科学院饲料研究所/农业部饲料生物技术重点开放实验室,北京 100081
  • Received:2011-10-17 Online:2012-03-01 Published:2011-11-25

摘要: 【目的】采用LED(light emitting diodes)灯作为光源,探讨孵化期间歇性单色光刺激对肉仔鸡出雏后生产性能、胸肉化学成分及肉品质的影响。【方法】1 480枚爱拔益加(AA)鸡商品代受精蛋(蛋重65—70 g,平均重68 g)被随机分配到绿光组(560 nm,490枚)、蓝光组(480 nm,490枚)和黑暗组(对照组,500枚)3种不同处理的孵化器中,采用间歇光照(15 min开灯,15 min关灯),光照强度为15 lx。肉仔鸡出壳后,从每个处理组各选取120只公雏分配到3个处理中,每个处理6个重复,每个重复20只鸡。自由采食和饮水,统一采用30 lx日光灯补光,光照时间23L﹕1D。【结果】各处理组种蛋孵化率、肉仔鸡初生重及平均采食量均无显著差异(P>0.05)。与黑暗组和蓝光组相比,胚胎期绿光刺激可显著增加肉仔鸡21和42 d体重(P<0.05)。42 d时,绿光组肉仔鸡的胸肌重和胸肌率均最高,分别较黑暗组提高了38.3 g和0.67%,较蓝光组提高了44.6 g和0.78%。整个生长期绿光组饲料转化率为1.81,显著优于黑暗组(1.88)和蓝光组(1.92,P<0.05)。各组肉仔鸡42 d胸肌化学成分无显著差异(P<0.05)。蓝光组胸肌24 h肉色b*值显著高于黑暗组和绿光组(P=0.05),而绿光处理组胸肌滴水损失(P=0.10)和蒸煮损失(P=0.07)均较黑暗组和蓝光组有升高的趋势。【结论】孵化期15 lx间歇绿光刺激可促进肉仔鸡肌肉生长,提高胸肌产量并改善饲料转化率,对胸肌化学成分无显著影响(P>0.05),但绿光组肉仔鸡胸肌系水力有降低的趋势。

关键词: 肉鸡胚胎, 单色光, 胸肌, 化学组成, 肉品质

Abstract: 【Objective】 LED (light emitting diodes) as light sources was used in this study to investigate the effect of intermittently monochromatic light stimuli during the embryogenesis on breast muscle growth, chemical composition, and meat quality of male broiler chicks.【Method】 Fertile broiler eggs (Arbor Acres, n=1 480) were preweighed and randomly assigned into one of the three treatment groups in 3 modified incubators: 1) monochromatic green light group (560 nm, n=490), 2) monochromatic blue light group (480 nm, n=490) and 3) control group (in dark condition, n =500). Light intensity was 15 lx at the eggshell level, and was intermittent at 15 min on and 15 min off. After hatching, 120 male chicks from each group were placed in 6 replicates with 20 birds each. All the birds were housed under normal white light (30 lx at bird-head level) with a light schedule of 23L﹕1D.【Result】 No significant differences in the hatchability, birth weight and feed intake among all groups were observed (P>0.05). Compared to birds in blue or dark group, BW in green light group was significantly increased at 21 d and 42 d of age (P<0.05). The breast muscle weight and breast muscle percentages in birds incubated under green light were significantly elevated by 38.3 g, 0.67%, and 44.6 g, 0.78% than those in the dark condition or blue group at 42 d of market age (P<0.05), respectively. In green light group, feed conversion ratio during 0-42 d was lower than that in the dark condition or blue group (P<0.05). No significant differences in the contents of breast moisture, CP, crude fat or crude ash among all groups were observed (P>0.05). There was a trend toward green light stimuli increasing drip loss (P=0.10) and cooking loss (P=0.07). In addition, blue light induced a higher b* value of 24-h meat color than that in the dark condition or green light group (P=0.05).【Conclusion】Intermittently green light (15 lx) stimuli during the embryogenesis enhanced the posthatch BW of male broilers, increased breast muscle growth, and improved feed conversion ratio, but did not cause any significant changes in breast chemical composition, or any noticeable changes in overall meat quality characteristics except for a decreasing trend in water-holding capacity.

Key words: broiler embryo, monochromatic light, breast muscle, chemical composition, meat quality