ACTA VETERINARIA ET ZOOTECHNICA SINICA ›› 2016, Vol. 47 ›› Issue (10): 2037-2044.doi: 10.11843/j.issn.0366-6964.2016.10.012

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Effects of LED Spectral Combination on Growth,Immune Function,Carcass Traits and Welfare of AA Broilers

MA Shu-mei 1,2,SUN Yan-yan 1,LI Dong-li 3,LI Yun-lei 1,CHEN Chao 1,LI Fu-huang 4,GUO Yan-li 2,CHEN Ji-lan 1*   

  1. (1.Institute of Animal Science,Chinese Academy of Agricultural Sciences,Beijing 100193,China;2.College of Animal Science and Technology,Gansu Agricultural University,Lanzhou 730070,China;3.Beijing Bainianliyuan Ecological Agriculture Co., LTD, Beijing 101599, China; 4.Animal Husbandry Station,Beijing 110102,China)
  • Received:2015-11-02 Online:2016-10-23 Published:2016-10-23

Abstract:

This experiment was conducted to investigate the effects of 4 LED spectral combination (named: A (21% Blue+30% Green+24% Yellow+25% Red),B (35% Blue+35% Green+18% Yellow+12% Red),C (27% Blue+30% Green+22% Yellow+21% Red) and D (42% Blue+28% Green+18% Yellow+12% Red)) on growth,immune function,carcass performance and welfare of AA broilers,aiming to provide theoretical and practical guidance for poultry production.A total of 600 1-day-old AA broilers were used.Each lighting treatment included 5 replicate groups with 30 chicks(15 male,15 female) per group.Feed and water were provided for ad libitum.Light program was 20 lx for the first week,and 5 lx (14L∶4D∶2L∶4D) till the end (6 weeks of age).The results showed that broilers reared under C light source significantly decreased average daily gain than A,B and D groups at 4-6 weeks by 14.45%,13.76% and 12.91%,respectively (P<0.05).C light source had a tendency to decrease average daily gain of 1-6 weeks (P=0.07).C light source significantly decreased the average daily feed intake of 4-6 weeks and 1-6 weeks compared to D light source (P<0.05).A light source significantly decreased feed gain ratio compared to D group by 9.14% (P<0.05).Antibody titers versus Newcastle disease (NDV) and avian influenza (Re-6) in D light source was significantly lower than that in other light groups (P<0.05).A significantly decrease of the gait score was observed in birds reared under A,C and D light source groups (by 44.97%,26.32% and 33.33%,respectively) compared to B light source (P<0.05).Spectral combination had no significant effect on eyeball development or carcass traits (P>0.05).It was concluded that A light source not only good for growth performance of growing period,but also increase the immune function and welfare of AA broilers.

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