禽营养 Poultry Nutrition

光照强度对北京鸭生产性能、胴体性能及肉品质的影响

  • 辛海瑞 ,
  • 潘晓花 ,
  • 杨亮 ,
  • 毕晔 ,
  • 熊本海
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  • 中国农业科学院北京畜牧兽医研究所, 动物营养学国家重点实验室, 北京 100193

收稿日期: 2015-11-19

  网络出版日期: 2016-04-11

基金资助

中国农业科学院鸭营养与饲料创新团队项目;动物营养与饲料基础数据的研究与集成应用(2013ywf-zd-3)

Effects of Light Intensity on Performance, Carcass Performance and Meat Quality of Peking Ducks

  • XIN Hairui ,
  • PAN Xiaohua ,
  • YANG Liang ,
  • BI Ye ,
  • XIONG Benhai
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  • State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Science, Beijing 100193, China

Received date: 2015-11-19

  Online published: 2016-04-11

摘要

本文旨在探究光照强度对北京鸭生产性能、胴体性能及肉品质的影响。选择600只1日龄健康的北京鸭,随机分配到5个组中,每组4个重复,每重复30只鸭(公母各占1/2)。试验光照强度各组分别设置为1、5、10、15和40 lx,白炽灯24 h全人工光照。试验期6周。结果表明:1)1~6周,各组间平均耗料量和平均体增重无显著差异(P>0.05),5 lx组的料重比显著低于10、15、40 lx组(P<0.05)。育雏期(1~2周)和生长期(3~5周)时各组生产性能无显著差异(P>0.05),而肥育期(6周)时1 lx组的平均耗料量和平均体增重显著高于5、10、15 lx组(P<0.05)。2)光照强度对屠体率、全净膛率、腿肌率、腹脂率及眼球指标(重量、横径和前后径)均无显著影响(P>0.05),但5 lx组的胸肌率显著高于40 lx组(P<0.05)。3)光照强度对最终pH(pHu)、滴水损失率、黄度(b*)值的影响不显著(P>0.05),40 lx组的最初pH(pHi)显著高于5、10、15 lx组(P<0.05),但亮度(L*)值显著低于5、10、15 lx组(P<0.05)。15、40 lx组的红度(a*)值显著低于1 lx组(P<0.05)。综上,5 lx光照强度不仅节能有效,还能提高北京鸭的饲料转化率和胸肌率。此外,低光照强度还有助于提高肉色的L*和a*值。

本文引用格式

辛海瑞 , 潘晓花 , 杨亮 , 毕晔 , 熊本海 . 光照强度对北京鸭生产性能、胴体性能及肉品质的影响[J]. 动物营养学报, 2016 , 28(4) : 1076 -1083 . DOI: 10.3969/j.issn.1006-267x.2016.04.015

Abstract

This trial was conducted to investigate the effects of light intensity on performance, carcass performance and meat quality of Peking ducks. Six hundred 1-day-old Peking ducks were randomly distributed into 5 groups, each group included 4 replicates with 30 ducks per replicate(half male and half female). All ducks were exposed to 5 different light intensity groups(1, 15, 10, 15 and 40 lx) by incandescent lamp 24 h lighting. The experiment lasted for 6 weeks. The results showed as follows:1) for the whole growth stage(1 to 6 weeks), light intensity had no significant effects on average feed intake and average body weight gain(P>0.05), but feed/gain of 5 lx group was significantly lower than that of 10, 15 and 40 lx groups(P>0.05). There were no significant effects on performance among all groups during the brooding(1 to 2 weeks) and growth period(3 to 5 weeks). During fattening period(6 weeks), the average feed intake and average body weight gain of 1 lx group were significantly higher than that of 5, 10 and 15 lx groups(P<0.05). 2) Light intensity had no significant effects on dressing percentage, eviscerated percentage, thigh meat percentage, abdominal fat percentage and the eye indices(eye weight, side-to-side and back-to-front diameters) most carcass traits(P>0.05). The breast muscle percentage of 5 lx group was significantly higher than that of 40 lx group(P<0.05). 3) There were no differences in ultimate pH, drip loss rate and yellowness(b*) value among different light intensity groups(P>0.05). The initial pH of 40 lx group was significantly higher than that of 5, 10 and 15 lx groups(P<0.05), while the lightness(L*) value was significantly lower than that of 5, 10 and 15 lx groups(P<0.05). The redness(a*) value of 15 and 40 lx groups was significantly lower than that of 1 lx group(P<0.05). Considering the previous results, the 5 lx light intensity not only can save electric energy, but also can improve feed conversion rate and breast muscle percentage, and low intensity light is benefit to improve L* and a* values of meat color.

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