共查询到20条相似文献，搜索用时 87 毫秒
1.
2.
大棚网上养肉鸡在大连市金州区已有10余年的历史,它打破了冬季必须利用密闭舍养肉鸡的局面,确保肉鸡一年四季均衡生产。现将有关技术介绍如下:1 基本原理大棚饲养肉鸡的原理是利用塑料薄膜对太阳光透过率高,对地面和畜体长波幅射透过率低的特点,充分利用太阳能和畜禽体温提高棚舍的温度,利用塑料薄膜透气性差的特点,控制和减缓寒冷气流对畜禽的不良影响。设置通风气口,适时通风换气,以调解舍内温度、湿度,控制有害气体含量,维持棚内适宜的小气候。舍内建有网床,使肉鸡离开地面饲养,有利于及时清除粪便,从而降低舍内的湿度,减少某些传染病的… 相似文献
3.
<正>简易塑料大棚投资少,可在荒滩、林间等地建造,不占用耕地,目前是农村饲养肉鸡的主要方式。冬季肉鸡易发呼吸道疾病,要想养好肉鸡,可注意以下几点:1.冷热应激是肉鸡呼吸道疾病的主要原因。近几年,肉鸡呼吸道感染极为普遍,死淘惨重,冬季高发,20日龄左右发病普遍,冷热应激是主要原因,因此一定要控制好大棚温度。白天充分利用太阳能和家禽体温,提高棚舍温度;晚 相似文献
4.
选取28日龄发育正常的爱拔益加肉鸡(又名AA肉鸡)1 800羽用于对比试验,随机分为2组,每组3个重复,每重复300羽,一组作为对照组在普通大棚饲养,另一组为试验组进入新型防暑降温棚舍饲养。试验结果显示:试验组夏季棚内最高气温低于棚外5.2℃,低于对照组3.9℃,相对湿度试验组、对照组棚内均高于棚外;试验组较对照组日增重提高23.5%,日耗料提高5.2%,饲料报酬提高14.7%,成活率提高3.22%。表明这种结构简单、造价低廉的棚舍,具有良好防暑降温的作用,可以保持棚内空气新鲜,有利于环境控制,从而发挥肉鸡生产潜能,提高经济效益。 相似文献
5.
简易大棚饲养肉鸡投资少、见效快,能为肉鸡提供较好的生长环境,其棚内饲养温度随着季节的不同,应进行控制.
1.春秋季
春秋季节是大棚饲养肉鸡的最好季节.平均气温在10℃-25℃左右,相对湿度在60%-70%之间. 相似文献
6.
１塑料大棚饲养肉鸡的特点１．１用塑料大棚饲养肉鸡投资少、见效快：目前，建设一个饲养１０００～１５００只肉鸡的大棚，只需投资２０００～３０００元左右，其造价仅是砖瓦结构鸡舍的１?５～１?４。一般每个鸡棚饲养２批肉鸡，即可收回全部鸡棚投资。１．２塑料大棚能为肉鸡提供较好的生长环境：冬天利用塑料薄膜的“温室效应”，能提高棚温，节省能源，提高饲料转化效率。夏天在大棚顶部盖上草苫和秸秆具有较好的隔热效能。通风时将两侧敞开，扯上挡网，能起到很好的防暑效果。１．３棚舍利用率高，经济效益大：大棚饲养肉鸡一般采用地… 相似文献
7.
在塑料大棚内饲养桑蚕,利用非蚕期的空闲时间养殖肉鸡,提高了大棚的利用率,增加了蚕农的收益,塑料大棚桑蚕与肉鸡轮养技术可在黄河流域等地区实施。1大棚的建设1.1棚址选择大棚以选在地势高燥、通风良好、靠近水源、土质无污染、远离大道无噪音的地方。1.2大棚建造大棚以东西向 相似文献
8.
夏季,高温天气对于肉鸡的饲养是一个十分不利的因素。肉鸡生长的适宜温度一般为１８℃－２１℃。当气温超过２５℃,肉鸡的食欲即开始下降;气温升至３２℃时,肉鸡有发生中暑与死亡的危险。因此,在夏季必须有计划地采取以防暑降温、提高采食量为主的综合措施,以达到使肉鸡快速增重的目的。其技术要点如下。１采用有效的降温设施 棚舍建在地势高燥、通风良好的地方;棚舍屋顶喷水或加盖草帘;打开所有门窗、通风孔;棚舍内安装吊扇;鸡体喷冷水雾等都能起到降低棚舍内温度的作用。２供足清凉的饮水 天气炎热时,由于肉鸡要不断地张口喘气… 相似文献
9.
10.
一、建造鸡舍 (一)肉鸡舍的基本要求:要求保温性能好,冬暖夏凉,能通风换气,屋顶不漏雨雪,地面墙壁便于冲洗消毒,远离居民闹市区。如果饲养数量不多,可利用现有的库房、教室、民房等建筑物,稍加改造即可养肉鸡。若是饲养数量大、批次多,应从长远打算重新建鸡舍。 (二)肉鸡舍型式:肉鸡舍型式有开放式、半开放式及密闭式等,可根据当地气候条件、供电情况、本身的经济实力等选择适宜的型式。 1.开放式鸡舍:四周敞开,只有屋顶,周围用铁丝网围 相似文献
11.
Chickens on 14 broiler breeder farms were examined at various times throughout their laying cycle. Antibodies to the turkey rhinotracheitis virus were common although they were not always accompanied by clinical signs of the swollen head syndrome. Ninety-nine broiler flocks were tested of which only 20 were serologically positive to the virus. Some of these infections were subclinical. On nine farms where swollen head syndrome occurred several successive flocks were sampled; the syndrome occurred intermittently. 相似文献
12.
S. Sgavioli C. H. de Faria Domingues D. M. C. Castiblanco M. F. F. M. Praes Giuliana M. Andrade-garcia E. T. Santos 《British poultry science》2016,57(5):693-698
Skeletal abnormalities, bone deformities and fractures cause significant losses in broiler production during both rearing and processing. Silicon is an essential mineral for bone and connective tissue synthesis and for calcium absorption during the early stages of bone formation.
Performance was not affected by the addition of silicon. However, broilers receiving silicon showed a significant increase of phosphorus, zinc, copper, manganese and ash in the tibia.
In conclusion, broiler performance was not impaired by adding the tested silicon product to the drinking water. In addition, bone development improved, as demonstrated by higher mineral and ash content.
Further studies are required to determine the optimal concentration of silicon, including heat stress simulations, to better understand the effects of silicon on bone development.
13.
14.
The use of nitrofuran antibiotics in food-producing animals is prohibited within the EU. Countries in the EU, as well those intending to export food to the EU, must ensure that their products are free from nitrofuran residues. As a result of recent global problems where chicken meat from a wide range of countries has been contaminated with nitrofuran metabolites, an investigation was performed to discover whether or not residues of the nitrofurans might be transferred from parent breeder chickens to their offspring broilers. Four groups of broiler breeders were each treated with one of the nitrofurans: furazolidone, nitrofurazone, nitrofurantoin or furaltadone. Residues of their side-chain metabolites, AOZ, SEM, AHD and AMOZ, were detected in the fertilised eggs at concentrations up to 1567 microg/kg. However, in the chicks that subsequently hatched from these eggs, residue concentrations of SEM, for example, were only found up to 26.6 and 32.5 microg/kg in liver and muscle, respectively, for 1-d-old chicks. Residue concentrations in tissues had fallen below the detection limit of the analytical method for 40-d-old broiler chicks, for all compounds except for semicarbazide (SEM, the nitrofurazone metabolite). Relatively high concentrations of nitrofurans are available to the newly hatched chick through the egg yolk. However, most of these residues are neither utilised nor deposited in the liver or muscle. 相似文献
15.
16.
肉鸡饲养户张某,在2003年10月份入雏AA肉鸡2400只,17日龄发生上呼吸道疾病,久治不愈,经化验诊断为波氏杆菌病,现报道如下。1发病情况及症状鸡群采食量突然下降,有咳嗽、打喷嚏、流泪,几天后出现张口呼吸、流鼻液、下颌肿胀,夜间静听有啰音，手触气管软陷，粪便稀，呈水样?毙匝现卣叩冢砫就出现死亡。2病理变化主要病理变化在头部与气管中,鼻腔内有粘液。气管有的充血,有的管腔内有粘液性分泌物。有的官腔内积有黄白色纤维素状物,还有的气管软陷,管腔变小,变狭窄。肺充血,肝肿胀,小肠充血。3诊断3.1将病鸡气管粘液涂于麦康凯琼脂培养基上,35… 相似文献
17.
18.
19.
20.
生产指标管理条件疾病预防１２３４５６７８９１０１１１２１３１４１５１６１７１８１９２０２１２２２３２４２５２６２７２８２９１１０２９５５１５７６４１６５４０５８１５１２５０３６３５３４３３３２３１３１３０３０２９２８２５２１２４２４２４２２２１７０６５６２６０６０３５３５２８２５２０光照时间１～３日龄每日２４h光照８～４２日龄每日１６h光照，８h黑暗４３日龄～上市，２３h照明６h黑暗；光照强度１～３日龄３０Lx１～７日龄平均每天饮水３．８L８～１４日龄平均每天饮水７．５L１５～２１日龄平均每天饮水１１L… 相似文献