jinnianlai,boershanyangchengweiyangzhiyedeliangdian,xuduonongminbuxizhongjinbuxibenbogoumaiboershanyang。qishi,zhezhongzuofabingbugoukexuehehuasuan,shaoyoubushen,haiyoukenengshangdangshoupian,maibudaochunzhongyang。zheli,bizhegaosuninyigehuasuandefangfa。
您可隻購買純種波爾山羊公羊1~3頭tou,用yong這zhe種zhong羊yang與yu本ben地di母mu山shan羊yang交jiao配pei,受shou孕yun後hou即ji可ke產chan下xia一yi代dai波bo爾er山shan羊yang,一yi代dai波bo爾er山shan羊yang的de公gong羊yang羔gao隻zhi可ke以yi作zuo肉rou羊yang飼si養yang,進jin行xing閹yan割ge,不bu可ke留liu作zuo種zhong羊yang。一yi代dai波bo爾er山shan羊yang的de母mu羊yang羔gao長chang大da以yi後hou,再zai與yu純chun種zhong公gong羊yang交jiao配pei,即ji可ke產chan下xia二er代dai波bo爾er山shan羊yang。注zhu意yi:yidaiboershanyangmuyangfaqingshi,buyaoyongtadefuqinyangjiaopei,bimianjinqinfanzhi。erdaideboershanyanggongyangrengranbunengzuoweizhongziyang,erdaidemuyanggaochangdahouzaiyulingwaidechunzhongboershanyangjiaopei,biankechanxiasandaideboershanyang。daoledisandai,wulungongyangmuyangdoukeyishuoshichunzhongyangle,buguo,tamenhaishibibushangdisidai。
一般說來,用這種辦法繁育波爾山羊,二至三年便可繁育出一大批純種波爾山羊,比直接購買波爾山羊實惠多、劃算的多。有人估算一頭純種公羊,一年內至少可以配種母羊500頭以上,如果采用冷凍精液授精,一頭公羊則可以配一萬隻母羊以上。
用這種方法繁殖波爾山羊還必須有一個重要的條件,就是用來交配的母羊必須體型較大一般的小體型“土山羊”是(shi)不(bu)行(xing)的(de),體(ti)型(xing)小(xiao)的(de)羊(yang)用(yong)純(chun)種(zhong)羊(yang)受(shou)孕(yun)後(hou),極(ji)可(ke)能(neng)造(zao)成(cheng)難(nan)產(chan),母(mu)羊(yang)子(zi)羊(yang)都(dou)有(you)生(sheng)命(ming)危(wei)險(xian)。隻(zhi)有(you)大(da)體(ti)型(xing)母(mu)羊(yang)可(ke)以(yi)與(yu)純(chun)種(zhong)羊(yang)交(jiao)配(pei)。有(you)一(yi)種(zhong)名(ming)叫(jiao)薩(sa)能(neng)山(shan)羊(yang)的(de)母(mu)羊(yang),體(ti)型(xing)較(jiao)大(da),價(jia)格(ge)也(ye)較(jiao)低(di),適(shi)宜(yi)與(yu)純(chun)種(zhong)波(bo)爾(er)山(shan)羊(yang)配(pei)種(zhong)。碭(dang)山(shan)縣(xian)官(guan)莊(zhuang)壩(ba)就(jiu)是(shi)在(zai)1997年從陝西省富平縣購買了500頭薩能母山羊和15頭(tou)公(gong)波(bo)爾(er)山(shan)羊(yang),在(zai)低(di)成(cheng)本(ben)的(de)情(qing)況(kuang)下(xia)取(qu)得(de)了(le)養(yang)羊(yang)業(ye)的(de)快(kuai)速(su)發(fa)展(zhan),這(zhe)個(ge)經(jing)驗(yan)值(zhi)得(de)借(jie)鑒(jian)。當(dang)然(ran),繁(fan)育(yu)波(bo)爾(er)山(shan)羊(yang)並(bing)不(bu)一(yi)定(ding)非(fei)用(yong)薩(sa)能(neng)山(shan)羊(yang)不(bu)可(ke),但(dan)一(yi)定(ding)要(yao)選(xuan)用(yong)體(ti)型(xing)大(da)的(de),這(zhe)一(yi)點(dian),一(yi)定(ding)要(yao)牢(lao)記(ji)。
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