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Evaluation of nesting behavior of individual laying hens in an enriched colony housing by using RFID technology

International Journal of Agricultural and Biological Engineering 2019年第6期12卷 7-15页

作者： Jofran L.Oliveira Hongwei Xin Kailao Wang Yang Zhao Department of Agricultural and Environmental Engineering Universidade Federal de RondonópolisMato Grosso 78735-901Brazil The University of Tennessee Institute of Agriculture KnoxvilleTennessee 37996USA Department of Biosystems Engineering Zhejiang UniversityZhejiang 310058China Department of Agricultural and Biological Engineering Mississippi State UniversityMississippi 39762USA Formerly Department of Agricultural and Biosystems Engineering Iowa State UniversityAmesIowa 50011-3270USA

The US egg industry is progressively adopting alternative housing systems for laying *** of nesting places accommodates natural behaviors and may improve the welfare of the laying ***,some fundamental questions remain about nesting behaviors of hens under different housing conditions,which would impact system design and *** instance,how long does a hen use nest per day for egg laying or nest exploration?How many hens nest simultaneously?In such schemes,information on hens’behavioral and production responses of hens remains relatively *** primary objective of this work was to demonstrate that RFID technology can be used to continuously quantify dynamic nesting behaviors of individual laying hens in a 60-hen enriched colony housing(ECH).Results show that hens spent on average 63.7±1.4 min(mean±SE)in the nest box and made 23.4±0.7 nest visits during a 16 h daily light *** spent in and visits to the nest box during the 6 h laying period accounted for 56% and 45% of the light-period value,*** nest occupancy was 29.0%±0.4%.Three distinct phases of egg production in nest boxes were observed:initial(1.5 h),peak(3.2 h,egg laying rate of 0.24±0.01 eggs/min),and late(1.3 h).The majority(95.1%±0.6%)of the daily eggs were laid in the nest *** variations in nesting behavior among individual hens and day-to-day variations for a given hen were *** RFID system will enable researchers to examine the impacts of resource allocations on nesting behaviors of laying hens in alternative hen housing.

关键词： animal welfare egg production RFID alternative hen housing individual behaviors

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Factors Influencing Employee＇s Satisfaction

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大观周刊 2011年第19期 172-172页

作者：刘玲西南财经大学经贸外语学院四川成都611130

paper aims at dig out the factors which influence employee's satisfaction towards *** are two more factors

关键词： work satisfaction individual behaviors rewards and penalties policy

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