首選節糧品種 據有關資料測算,雞體重如果每增加0.5千克,每年多耗飼料3千克;在相同的飼養麵積內,飼養白殼蛋雞比飼養褐殼蛋雞多耗飼料25%。
提高後備雞整齊度 peiyuhoubeijishifouchenggong,qizhengqidushiyigezhongyaozhibiao。tixingchayixiao,jiqunfayuzhengqi,xingchengshucainengtongqihua,jianglaikaichanshijiancainengyizhi,chandangaofengyegao。zaiguanlizhongnulicongchujikaishitigaoqizhengqidu,chuzaiwendu、濕度、飼料、密度、免(mian)疫(yi)等(deng)各(ge)方(fang)麵(mian)進(jin)行(xing)科(ke)學(xue)管(guan)理(li)外(wai),要(yao)注(zhu)意(yi)隨(sui)時(shi)將(jiang)強(qiang)弱(ruo)雛(chu)雞(ji)分(fen)開(kai)飼(si)養(yang),對(dui)弱(ruo)雛(chu)加(jia)強(qiang)營(ying)養(yang)。首(shou)先(xian)飼(si)養(yang)密(mi)度(du)要(yao)適(shi)中(zhong),杜(du)絕(jue)因(yin)飼(si)養(yang)密(mi)度(du)過(guo)大(da)而(er)造(zao)成(cheng)環(huan)境(jing)條(tiao)件(jian)惡(e)劣(lie),雞(ji)隻(zhi)的(de)平(ping)均(jun)料(liao)位(wei)和(he)水(shui)位(wei)不(bu)足(zu),將(jiang)影(ying)響(xiang)育(yu)成(cheng)雞(ji)的(de)整(zheng)齊(qi)度(du)。其(qi)次(ci)要(yao)按(an)體(ti)重(zhong)適(shi)時(shi)進(jin)行(xing)分(fen)群(qun),分(fen)為(wei)大(da)中(zhong)小(xiao)三(san)群(qun),對(dui)超(chao)重(zhong)的(de)群(qun)體(ti)進(jin)行(xing)必(bi)要(yao)限(xian)飼(si),對(dui)體(ti)重(zhong)小(xiao)的(de)群(qun)體(ti)進(jin)行(xing)合(he)理(li)補(bu)飼(si),以(yi)縮(suo)小(xiao)全(quan)群(qun)體(ti)重(zhong)差(cha)異(yi),達(da)到(dao)開(kai)產(chan)體(ti)重(zhong)的(de)整(zheng)齊(qi)一(yi)致(zhi)。
後備雞體重達標 體重是衡量後備雞生長發育的重要指標之一。骨骼的發育與將來母雞的蛋重、dankeqiangduhaohuaimiqiexiangguan。kaichanjidepingjuntizhonghegugefayudounengtongshidabiaoshitichengshudezhongyaobiaozhi。butongjizhongdouyouqibiaozhuntizhong,tizhongguodaguofeishixingjinengjiaocha。gugedefayuyongjingchanglaibiaoshi。tizhongdabiaoerjingchangweidabiao,shuomingqitineizhifangguoliang,zhijieyingxiangqichandanlianghedankezhiliang。zaitiaozhengtizhongshiyingzhangwodeyuanzeshizaidanbaizhimanzudejichushang,tiaozhengnengliang,sherunenglianggaoshi,zengzhongjiakuai。yincizaiyuchengguochengzhong,xubudingshichoucetizhonghejingchang,bingcaiquxiangyingdesiyangguanlicuoshi,liqiushiqitizhonghejingchangzaikaichanshinengtongshidabiao。
控製好性成熟日齡 性成熟的早晚與環境及遺傳有關。合理的光照是控製性成熟的重要措施。一般蛋雞12zhoulinghouduiguangcijimingan,guangzhaonengcujinxingchengshu。zaishengchanzhongyingzhuyizhidingkexuehelideguangzhaofangan,shijidetichengshuyuxingchengshudadaotongbuyizhi,cainengbaozhengshengchanqianlidechongfenfahui。ruguotizhongdabiao,yingzi18周齡或20周齡每周延長1小時,直至增加到16小時時恒定不變。如果20周齡體重仍不達標,則將補充光照時間向後推遲一周,並在此階段加強營養,促進體重達標。
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