一般情況下,種公雞和種母雞是分別育成的,那麼,為了保持高的受精率、孵化率和高品質的商品代雛雞,就要考慮種公、母雞配種的年齡、開配的時間和比例。這些問題主要在種公雞方麵。
三(san)黃(huang)雞(ji)種(zhong)公(gong)雞(ji)的(de)第(di)二(er)性(xing)征(zheng)表(biao)現(xian)和(he)性(xing)成(cheng)熟(shu)一(yi)般(ban)比(bi)種(zhong)母(mu)雞(ji)早(zao),但(dan)種(zhong)公(gong)雞(ji)在(zai)配(pei)種(zhong)期(qi)間(jian)需(xu)產(chan)生(sheng)大(da)量(liang)的(de)精(jing)子(zi),擔(dan)負(fu)繁(fan)重(zhong)的(de)配(pei)種(zhong)任(ren)務(wu),所(suo)以(yi)種(zhong)公(gong)雞(ji)的(de)體(ti)質(zhi)需(xu)要(yao)健(jian)康(kang)強(qiang)壯(zhuang),生(sheng)機(ji)旺(wang)盛(sheng),在(zai)開(kai)始(shi)配(pei)種(zhong)前(qian)已(yi)完(wan)全(quan)成(cheng)熟(shu)。一(yi)般(ban)要(yao)求(qiu),種(zhong)公(gong)雞(ji)的(de)年(nian)齡(ling)應(ying)大(da)於(yu)種(zhong)母(mu)雞(ji)或(huo)同(tong)齡(ling),如(ru)果(guo)種(zhong)公(gong)雞(ji)的(de)年(nian)齡(ling)小(xiao)於(yu)種(zhong)母(mu)雞(ji)時(shi),種(zhong)公(gong)雞(ji)應(ying)完(wan)全(quan)成(cheng)熟(shu)和(he)具(ju)備(bei)良(liang)好(hao)的(de)配(pei)種(zhong)能(neng)力(li)時(shi)才(cai)開(kai)配(pei)。
在種母雞開產前1~2zhou,yingjiangzhonggongjifangruzhongmujiqun,rangzhonggongjiyuzhongmujixianghushuxi,tiaoxuanpeiou。tongshi,tonglandezhonggongjiyexuyaoyidingshijianquelizaiquntizhongdepailiecixu,jianshaodadoueryingxiangpeizhong。mujixuzaijieshougongjijiaopei20多小時後才產出受精蛋,通常在開配後約3天才達到最高的受精率。
種公雞每天可配種20~80次,每次射精量從0.1毫升至1毫升不等。每隻公雞交配的次數取決於競爭、與配母雞數量、群體等級、溫度、光照等諸多因素。配種的時間多在每天早晨。在群體中排列居後和膽小的公雞交配較少。公雞一次交配後可保持20多天的受精能力,但通常在4~5天後的受精率迅速下降。如果母雞在產蛋期間更換種公雞,換入新公雞3天後,主要是由新公雞的精子受精。
正確的種公、mujibiliyouzhuyubaochigaodezhongdanshoujinglv。rugongjishuliangguoduo,huiyinqigongjijingzhengpeizhongerdadou,fanershipeizhonglvxiajiang,yezengjialesiyanggongjidesiliaochengben。danruguogongjishuliangguoshao,youhuishiyixiemujidepeizhongjihuijianshao,shishoujinglvxiajiang,yekenengshigongjipeizhongguopinfan,xiaohaotaida,tizaoshuailaoeryingxianghouqidepeizhongnengli。gongmujidezhengquebiliyuzhongjileixinghetixingdaxiaoyouguan,gezhongleixingdesanhuangjidefenmubiliruxia:
地方優良品種1:12~15;
優質型三黃雞品種1:10左右;
快大型三黃雞品種1:8~10。
生產中要經常檢查種蛋的受精率、公雞的體況、實shi際ji的de公gong母mu雞ji比bi例li。雞ji群qun幾ji乎hu每mei天tian發fa生sheng死si亡wang和he淘tao汰tai,各ge欄lan的de公gong母mu雞ji數shu量liang經jing常chang發fa生sheng變bian化hua,需xu要yao一yi段duan時shi間jian後hou進jin行xing檢jian查zha和he調tiao整zheng公gong母mu雞ji比bi例li。對dui於yu有you病bing、精神和體質欠佳、跛行、腳底部感染膿腫的公雞要及時淘汰和更換。
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