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Effects of different LED light colors on growth performance and harmful gas emission of broilers breeding in a digital rearing chamber

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International Journal of Agricultural and Biological Engineering 2022年第4期15卷 71-78页

作者： Dengfei Jie Zhanxiang Zhang Jincheng He Yafang Zhou Guangyou Zhu College of Mechanical and Electrical Engineering Fujian Agriculture and Forestry UniversityFuzhou 350002China Fujian Key Laboratory of Agricultural Information Sensoring Technology Fuzhou 350002China College of Engineering Huazhong Agriculture UniversityWuhan 430070China

Refined management is an inevitable trend in the development of livestock *** acquisition of breeding environment parameters is beneficial to improve breeding efficiency while reducing environmental *** is an important breeding environmental factor during broiler *** this study,a short-term broiler breeding experiment was conducted with different light color illumination environments in a digital breeding chamber under lab *** to experimental results,the Red Light(RL)group was conducive to the growth of broilers at 30 d of age with low NH3 emission concentration;the Green Light(GL)group inhibited the broiler growth;the Yellow Light(YL)group showed the highest average emission concentration of NH3 and lowest daily average emission concentration of CO_(2).According to the analysis of moisture content,pH value,and C/N in the broiler manure,it can be concluded that the physical and chemical properties of broiler defecation quantities were different under various light color illuminations,resulting in the difference in broiler growth conditions and harmful gas *** study results could provide a research basis and ideas of reference to establish a relationship between LED illumination information,broiler growth performance,and harmful gas emission.

关键词： broiler growth properties harmful gas ammonia illumination environment

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Effects of Chinese Herbal Medicine Additives on growth,Immunity and Antioxidation of Chickens

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Medicinal Plant 2022年第5期13卷 114-118页

作者： Cui YANG Sicong LUO Siqian WU Limei QIN Liang WU Yang LIU Jiahuang YANG Qiang WU Guangxi Agricultural Vocational University Nanning 530072China The Animal Husbandry Research Institute of Guangxi Zhuang Autonomous Region Nanning 530001China Guangxi Analysis and Testing Research Center Nanning 530000China

Chinese herbal medicine additives can not only directly improve the growth performance of chickens,but also indirectly affect the growth of chickens by enhancing the antioxidant capacity,immunity and disease resistance of the body,and eliminating diseases and adverse factors,thereby improving the growth performance of *** the context of the current national prohibition of adding antibiotics to feed,the research and application of Chinese herbal medicine additives are of practical significance to eliminate the long-term use of antibiotics as chicken feed additives and reduce the threat to the environment and human *** this reason,the research related to the substitution of Chinese herbal medicine for antibiotics is made a brief introduction to provide a reference in research and production practice.

关键词： Chinese herbal medicine additives Chicken growth properties Antioxidant capacity Immunological functioning Disease resistance

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