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Light demand characteristics,production performance,and changes in the feeding patterns of broilers

International Journal of Agricultural and Biological Engineering 2024年第2期17卷 68-73页

作者： Shouyi Wang Guoping Jiang Chenghao pan Thebano Santos Yasser Elhadidi Ahmed Jado Shufang Jin jinming pan College of Biosystems Engineering and Food Science Zhejiang UniversityHangzhou 310058China Infinova(Hangzhou)Information System Technology Co. Ltd.Hangzhou 310012China Center of Information Technology"Renato Archer"(CIT) Ministry of ScienceTechnologyInnovation and CommunicationCEP:13069-901 Campinas(SP)Brazil Department of Agricultural Engineering Mansoura UniversityMansoura 35516Egypt

Poultry is a light-sensitive animal and the light environment has an important influence on the growth and development of these *** studies have mainly focused on the effects of the light environment on various physiological indicators of poultry but seldom explored the light demand characteristics of broilers under free *** experiment mainly studied the light demand characteristics of broilers under a yellow LED light environment and the influence of different breeding densities[low-density(2.5 broilers/m^(2)),high-density(7.5 broilers/m^(2))]on the production performance and diet characteristics of *** showed that the production performance indexes of low-density groups are higher than those of high-density *** feed and water consumption in the light area of the two experimental groups were significantly higher than those in the dark area,which means that the broilers showed a great preference for the light ***,as the age of the broilers increased,the food and water consumption of the broilers decreased,indicating that broilers had a lower preference for light in the middle and late stages of *** statistical results for the residence frequency distribution characteristics showed that broiler chickens had different light requirements at different growth stages under the condition of active selection:1)low-density breeding environment:23.8L(light):0.2D(dark)for chicks and 22.3L:1.7D for adult broilers;2)high-density breeding environment:22.6L:1.4D for chicks and 15.0L:9.0D for adult *** study will provide a reference for the optimization and control of light environment in broiler breeding.

关键词： broiler light-demand characteristics production performance feeding pattern

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肉鸡运输应激发生机制与防控策略

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中国家禽 2024年第7期46卷 101-112页

作者：徐海祥张希斌贺鹏光王首驿林宏建泮进明浙江大学生物系统工程与食品科学学院农业农村部农产品产地处理装备重点实验室浙江杭州310016 山东新希望六和集团有限公司山东青岛266000 潍坊和盛园食品有限公司山东潍坊262100

运输是肉鸡生产闭环中不可避免的过程,但由于运输过程中各种环境因素和外界刺激等的综合作用,可能会对肉鸡造成多种应激反应,导致鸡只自身免疫、繁殖机能和生产性能等出现不同程度下降,进而严重影响肉鸡生产企业的经济效益。文章列举了... 详细信息

运输是肉鸡生产闭环中不可避免的过程,但由于运输过程中各种环境因素和外界刺激等的综合作用,可能会对肉鸡造成多种应激反应,导致鸡只自身免疫、繁殖机能和生产性能等出现不同程度下降,进而严重影响肉鸡生产企业的经济效益。文章列举了常见运输应激源的产生及其对肉鸡的影响,包括不合理的抓取装箱方式、禁食、急性冷热刺激、运输密度等;总结了运输应激的作用机理,包括内分泌轴应激应答系统以及氧化应激作用通路,并从提高抗应激能力和减少应激源两个角度提出内外结合预防运输应激的潜在有效手段,提出将运输应激的研究同精准畜牧技术、人工智能、医学等方向结合的展望,旨在为肉鸡运输相关的研究和生产提供参考。

关键词：肉鸡运输应激机理应激防治

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Unevenly distributed LED light produces distinct behavioral preferences and production performance of broilers

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International Journal of Agricultural and Biological Engineering 2019年第2期12卷 49-53页

作者： Chenghao pan Minsi Lu Yingping Zhang Yue Yu Qiuyan Lu Yefeng Yang jinming pan College of Biosystems Engineering&Food Science Zhejiang UniversityHangzhou 310058China College of Optical and Electronic Technology China Jiliang UniversityHangzhou 310018China Sino-Agri Leading Biosciences Company LtdShanghai 200071China

LED has shown great advantages in poultry *** study focused on the behavioral preferences and production performance of chicken broilers reared under unevenly distributed yellow LED *** pens were divided into two groups adopting respective maximum light intensities(MLIs,60 lx and 30 lx).Because of different distances from the installation position of the LED pipe,each pen was distributed with unevenly distributed *** pen consisted of four subzones indicated by their light intensities-high intensity(HI),medium intensity(MI),low intensity(LI)and weak intensity(WI).Four subzones were the same size and provided with a feeder and a drinker,*** broilers moved freely across the four *** significant differences in body weight(BW),uniformity of final BW and feed conversion ratio(FCR)were observed between the two experimental ***,greater feed intake and water intake were found in HI than those in other *** drinking preference changed with age for four subzones and was more likely to appear at the later stage,despite substantial fluctuations within the *** feeding preference was more constant than the drinking preference and appeared mainly at the early and middle stages of this *** findings could provide implications for broiler production reared under unevenly distributed LED light condition.

关键词： LED unevenly distributed light behavioral preference broiler production performance light intensity artificial lighting animal welfare

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Short-wavelength light induces broiler’s behavioral and physiological syndrome through a misaligned eating rhythm

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International Journal of Agricultural and Biological Engineering 2022年第3期15卷 47-54页

作者： Yefeng Yang Qiong Liu Shouyi Wang Li Zeng Chenghao pan Ahmed Jado Yasser Elhadidi Kai Liu jinming pan Department of Biosystems Engineering Zhejiang UniversityHangzhou 310058China Department of Agricultural Engineering Mansoura UniversityMansoura 35516Egypt Department of Infectious Diseases and Public Health City University of Hong KongHong Kong SARChina Key Laboratory of Intelligent Equipment and Robotics for Agriculture of Zhejiang Province Hangzhou 310058China

Previous work shows that long-wavelength light has a robust circadian rhythmic pattern in the expression of clock genes of chickens,whereas short-wavelength light leads to an arrhythmic oscillation of some clock genes(e.g.,cClock,cCry1,cCry2,cPer2,and cPer3).However,knowledge about the consequences of LED lights on the physiological and behavioral phenotype was still not *** experiment hypothesize that short-wavelength light disturbs chicken’s eating rhythm and leads to a wrong time to eat,resulting in metabolic syndrome.“Meihuang”broilers were housed in monochromatic LED blue light,green light,yellow light,red light,or white light with a very low dose(15 lx).Multiply physiological parameters were measured and the 24-h eating behavior was *** effects of LED light on physiological status and behavioral phenotype showed a wavelength-dependent ***-wavelength light significantly decreased the level of total triglycerides and total cholesterol but increased triiodothyronine ***,long-wavelength light increased the triglycerides and total cholesterol and reduced the level of ***,it was found that short-wavelength light significantly boosted body weight compared with long-wavelength light,despite equivalent levels of food ***-wavelength light induced 23.4%and 14.1%of food consumption during subjective nights,but long-wavelength light did *** results imply that when chickens eat mattered,not just what they ***,low as 15 lx of blue light exposure during the typical dark period is sufficient to leads an individual to eat at“wrong”time,causing metabolic dysfunction.

关键词： short-wavelength light broiler behavior physiology environmental control circadian rhythm intermittent eating

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DEVELOPMENT OF AN AUTOMATIC WEIGHING PLATFORM FOR MONITORING BODYWEIGHT OF BROILER CHICKENS IN COMMERCIAL PRODUCTION

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Frontiers of Agricultural Science and Engineering 2023年第3期10卷 363-373页

作者： Danni ZHOU Yi ZHOU Pengguang HE Lin YU jinming pan Lilong CHAI Hongjian LIN College of Biosystems Engineering and Food Science Zhejiang UniversityHangzhou 310058China Key Laboratory of Equipment and Informatization in Environment Controlled Agriculture Ministry of Agriculture and Rural AffairsHangzhou 310058China Key Laboratory of Intelligent Equipment and Robotics for Agriculture of Zhejiang Province Hangzhou 310058China Joint Research Center of Zhejiang University and Hefei Shenmu Information Science&Technology Company Hefei 230601China Department of Poultry Science University of GeorgiaAthensGA 30602USA

Bodyweight is a key indicator of broiler production as it measures the production efficiency and indicates the health of a ***,broiler weight(i.e.,bodyweight)is primarily weighed manually,which is timeconsuming and labor-intensive,and tends to create stress in *** study aimed to develop an automatic and stress-free weighing platform for monitoring the weight of floor-reared broiler chickens in commercial *** developed system consists of a weighing platform,a real-time communication terminal,computer software and a smart phone applet *** system collected weight data of chickens on the weighing platform at intervals of 6 s,followed by filtering of outliers and repeating *** performance and stability of this system was systematically evaluated under commercial production *** the adoption of data preprocessing protocol,the average error of the new automatic weighing system was only 10.3 g,with an average accuracy 99.5%with the standard deviation of 2.3%.Further regression analysis showed a strong agreement between estimated weight and the standard weight obtained by the established live-bird sales *** variance(an indicator of flock uniformity)of broiler weight estimated using automatic weighing platforms was in accordance with the standard *** weighing system demonstrated superior stability for different growth stages,rearing seasons,growth rate types(medium-and slow-growing chickens)and *** system is applicable for daily weight monitoring in floor-reared broiler houses to improve feeding management,growth monitoring and finishing day *** application in commercial farms would improve the sustainability of poultry industry.

关键词： automatic weighing weight monitoring floor housing uniformity precision poultry farming

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浙江省建德市“数智草莓”创新实践与展望

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农业工程 2024年第6期14卷 20-25页

作者：余红伟郑志强徐海祥泮进明陆海燕建德市农业技术推广中心浙江建德311600 浙江大学生物系统工程与食品科学学院浙江杭州310058 中国农业机械化科学研究院集团有限公司北京100083

在浙江省农业现代化、数字化改革的背景下,数字技术给建德市农业农村发展带来了新的机遇。以建德市“数智草莓”数字化平台为例,详细介绍了近年来建德市草莓产业以“1+6+N”的管理服务架构为核心,通过集成技术服务、种植服务、购销服务... 详细信息

在浙江省农业现代化、数字化改革的背景下,数字技术给建德市农业农村发展带来了新的机遇。以建德市“数智草莓”数字化平台为例,详细介绍了近年来建德市草莓产业以“1+6+N”的管理服务架构为核心,通过集成技术服务、种植服务、购销服务、政策服务和有效监管等功能,在全方位的“数智”服务加持下,持续推进草莓“标准地”建设,从而走向高质量发展的实践经验。同时就智慧农业在建德市草莓生产领域的发展趋势、潜力及未来产业发展进行展望。

关键词：草莓数智草莓建德草莓智慧农业数字化标准地建设农安信用

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薄层营养液膜技术(NFT)水培多年生黑麦草对不同富氮废水的净化效果

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农业工程学报 2005年第3期21卷 138-142页

作者：泮进明杨祥龙浙江大学农业生物环境工程研究所杭州310029

采用薄层营养液膜技术(NFT)培育多年生黑麦草(LoliumperenneL.),以草带为植物滤器净化5种不同配置的富氮废水,废水10d更换一次。试验结果表明在短期内(2d),TAN、NO-2-N和NO-3-N的去除量均在本身高水平而其他成分低水平的试验组达到最高,... 详细信息

采用薄层营养液膜技术(NFT)培育多年生黑麦草(LoliumperenneL.),以草带为植物滤器净化5种不同配置的富氮废水,废水10d更换一次。试验结果表明在短期内(2d),TAN、NO-2-N和NO-3-N的去除量均在本身高水平而其他成分低水平的试验组达到最高,4组非离子氨UIA的净化率均高于99%。所有废水的pH值在2d后均被控制在6.5～8.0。以上述3种氮90%的净化率为目标,废水G3(初始浓度为TAN:40mg·L-1,NO-2-N:40mg·L-1,NO-3-N:10mg·L-1)和CK(仅在26.77L自来水中加入18.36g四水硝酸钙)需2d,废水G4(TAN:40mg·L-1,NO-2-N:4mg·L-1,NO-3-N:10mg·L-1)需4d,废水G1(TAN:140mg·L-1,NO-2-N:40mg·L-1,NO-3-N:80mg·L-1)、废水G2(TAN:140mg·L-1,NO-2-N:40mg·L-1,NO-3-N:10mg·L-1)仅TAN和NO-2-N在6d内完成。试验结束时G3草净增长最高(169.3mm),并获得最大干草产量0.205kg·m-2,G4获得最大鲜草产量1.48kg·m-2。

关键词：富氮废水处理薄层营养液膜技术(NFT) 多年生黑麦草亚硝酸盐氮氨氮硝酸盐氮非离子氨

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叠层笼养蛋鸡无线体温监测试验

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农业工程 2024年第7期14卷 48-54页

作者：金定周勇王海旺刘旭明蒋劲松郑成煌徐海祥泮进明杭州市农业农村事务保障中心浙江杭州310000 北京德青源农业科技股份有限公司北京102602 杭州朗拓生物科技有限公司浙江杭州310018 浙江大学生物系统工程与食品科学学院浙江杭州310058

现代化蛋鸡养殖中,体温是判断蛋鸡是否健康的一项重要指标。为了了解笼养蛋鸡的体温变化规律,利用蛋鸡可穿戴无线体温传感监测系统,对笼养蛋鸡开展全天全时体温监控试验。试验结果表明,正常笼养蛋鸡体温在38.41~41.85℃范围内变化,呈现... 详细信息

现代化蛋鸡养殖中,体温是判断蛋鸡是否健康的一项重要指标。为了了解笼养蛋鸡的体温变化规律,利用蛋鸡可穿戴无线体温传感监测系统,对笼养蛋鸡开展全天全时体温监控试验。试验结果表明,正常笼养蛋鸡体温在38.41~41.85℃范围内变化,呈现出一定的昼夜节律特性,全天体温最低点出现在21:00—22:00;发生发热性疫病时蛋鸡平均体温比正常情况升高0.21~1.30℃;早间时段和晚间时段,患病蛋鸡体温异常升高的均值更大,相对于午间时段更易区分正常蛋鸡和异常蛋鸡。叠层笼养蛋鸡体温监测可为建立鸡体温健康判断模型提供理论参考,对实现精准掌握蛋鸡规模化养殖群体健康状态、提高生产效益具有重要的现实意义。

关键词：叠层笼养蛋鸡体温监测无线监测系统传感器规模化养殖

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规模化畜禽养殖污染气体现场检测方法与仪器研究进展

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农业工程学报 2015年第1期31卷 236-246页

作者：介邓飞泮进明应义斌浙江大学生物系统工程与食品科学学院杭州310058 华中农业大学工学院武汉430070

随着中国畜禽生产的规模化和集约化,畜禽舍内饲养密度增大,产生了许多污染气体。这些污染气体含有大量的氨、硫化物和挥发性有机物等有毒有害成分,不仅影响畜禽的正常生长,而且当这些污染气体扩散到大气中,会对大气环境造成环境污染,严... 详细信息

随着中国畜禽生产的规模化和集约化,畜禽舍内饲养密度增大,产生了许多污染气体。这些污染气体含有大量的氨、硫化物和挥发性有机物等有毒有害成分,不仅影响畜禽的正常生长,而且当这些污染气体扩散到大气中,会对大气环境造成环境污染,严重影响城乡的空气质量,使人类生存环境不断恶化,危害饲养人员及周围居民的身体健康。本文阐述了几种典型污染气体特征,综述了国内外规模化畜禽养殖主要污染气体现场检测方法和分析仪器研究现状,为实现对污染气体进行快速、准确检测,并判定其成分与浓度提供十分必要的依据,也为中国畜禽养殖污染气体检测技术的发展提供一定参考。

关键词：污染气体检测方法仪器畜禽养殖场

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Feature deformation network with multi-range feature enhancement for agricultural machinery operation mode identification

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International Journal of Agricultural and Biological Engineering 2024年第4期17卷 265-275页

作者： Weixin Zhai Zhi Xu jinming Liu Xiya Xiong Jiawen pan Sun-Ok Chung Dionysis Bochtis Caicong Wu College of Information and Electrical Engineering China Agricultural UniversityBeijing 100083China Key Laboratory of Agricultural Machinery Monitoring and Big Data Application Ministry of Agriculture and Rural AffairsBeijing 100083China Department of Smart Agricultural Systems Graduate SchoolChungnam National UniversityDaejeon 34134Republic of Korea Institute for Bio-Economy and Agri-Technology(iBO) Centre for Research and Technology-Hellas(CERTH)Thessaloniki 57001Greece

Utilizing the spatiotemporal features contained in extensive trajectory data for identifying operation modes of agricultural machinery is an important basis task for subsequent agricultural machinery trajectory *** the present study,to effectively identify agricultural machinery operation mode,a feature deformation network with multi-range feature enhancement was ***,a multi-range feature enhancement module was developed to fully explore the feature distribution of agricultural machinery trajectory ***,to further enrich the representation of trajectories,a feature deformation module was proposed that can map trajectory points to high-dimensional space to form feature ***,EfficientNet-B0 was used to extract features of different scales and depths from the feature map,select features highly relevant to the results,and finally accurately predict the mode of each trajectory *** validate the effectiveness of the proposed method,experiments were conducted to compare the results with those of other methods on a dataset of real agricultural *** the corn and wheat harvester trajectory datasets,the model achieved accuracies of 96.88%and 96.68%,as well as F1 scores of 93.54%and 94.19%,exhibiting improvements of 8.35%and 9.08%in accuracy and 20.99%and 20.04%in F1 score compared with the current state-of-the-art method.

关键词： road-field trajectory classification efficientNet feature deformation network multi-range feature enhancement agricultural machinery operation mode recognition

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