繁fan殖zhi率lv強qiang是shi小xiao尾wei寒han羊yang的de突tu出chu特te點dian,在zai飼si養yang管guan理li中zhong,利li用yong小xiao尾wei寒han羊yang常chang年nian發fa情qing,縮suo短duan繁fan殖zhi周zhou期qi,掌zhang握wo一yi胎tai多duo羔gao技ji術shu,提ti高gao繁fan殖zhi率lv,是shi飼si養yang小xiao尾wei寒han羊yang獲huo取qu收shou益yi的de關guan鍵jian所suo在zai。影ying響xiang小xiao尾wei寒han羊yang繁fan殖zhi率lv有you許xu多duo因yin素su,有you單dan一yi因yin素su,也ye有you綜zong合he因yin素su。在zai生sheng產chan實shi踐jian中zhong隻zhi有you對dui諸zhu多duo因yin素su正zheng確que分fen析xi,並bing采cai取qu相xiang應ying有you效xiao的de對dui策ce,才cai能neng獲huo取qu最zui大da的de產chan出chu。
一、選擇多羔公母羊留種
shuanggaohuoduogaojuyouyichuanxing,zaixuanliuzhonggongmuyangshi,qishangdaigongmuyangzuihaoshiyitaishuanggaoyishangdehoubeiyangqunzhongsuoxuanchude。zhexiejuyoulianghaoyichuanjichudegongmuyangliuzuozhongyong,nengzaisiyangzhongchongfenfahuiqiyichuanqianneng,tigaomuyangyitaiduogaodejilv。
二、加強種羊營養
jiaqiangzhongyangyingyangshitigaofanzhilvdezhongyaocuoshi。chongzudeyingyangshizhongyangyoujiankangdetikuangheshidudebiaoqing,gongyangbaochiwangshengdexingyu,peizhongshijingyezhongjingzishuliangduo、活力強、受精能力高;母(mu)羊(yang)可(ke)以(yi)常(chang)年(nian)發(fa)情(qing),配(pei)種(zhong)妊(ren)娠(shen)後(hou)體(ti)質(zhi)健(jian)壯(zhuang)胎(tai)兒(er)發(fa)育(yu)良(liang)好(hao),產(chan)後(hou)奶(nai)水(shui)充(chong)足(zu),羔(gao)羊(yang)出(chu)生(sheng)重(zhong)大(da),成(cheng)活(huo)率(lv)也(ye)高(gao),同(tong)時(shi)母(mu)羊(yang)產(chan)多(duo)糟(zao)糕(gao)的(de)機(ji)率(lv)就(jiu)會(hui)增(zeng)加(jia)。因(yin)此(ci),飼(si)養(yang)小(xiao)尾(wei)寒(han)羊(yang)無(wu)論(lun)放(fang)牧(mu)或(huo)舍(she)飼(si),都(dou)必(bi)須(xu)喂(wei)給(gei)充(chong)足(zu)的(de)混(hun)合(he)精(jing)料(liao)。種(zhong)公(gong)羊(yang)在(zai)非(fei)配(pei)種(zhong)期(qi)要(yao)求(qiu)每(mei)隻(zhi)日(ri)喂(wei)混(hun)合(he)粗(cu)料(liao)0.5~0.6千克,配種期每隻日喂混合精料0.8~1.0千克,粗飼料1.7~1.8千克;母羊每日喂混合精料0.3~0.4千克,妊娠母羊隨妊娠天數的增加(尤其後期),還應逐漸增加精料給量。精飼料中必須含有足量的蛋白質、能量、維生素、weiliangyuansuheqitakuangwuzhi,bingbaozhengchongzudeyinshui。qinglvsiliaoduizhongyangyouqizhongyao。yinweiqinglvsiliaokeyimibujingcusiliaozhongyingyangbuzudequexian,duitigaogongyangdejingzimiduhehuoli,cujinmuyangtineiluanzidefayuchengshuheduopailuan,zengjiachanduogaodejilv,cujinrenshenmuyangtineitaierdefayuhechengchang,baozhengchanchugaoyangchushengzhongda,chenghuolvgaodoujuyouzhongyaozuoyong。
三、提高羊群中青壯年母羊的比例
羊群中幼齡初配母羊和老、弱羊繁殖力均不如壯年母羊。據統計,小尾寒羊產單羔較少,一般隻見於初產羊,而雙羔的比例較高。母羊一生中以3~4歲時繁殖率最強,繁殖年限一般為8年。因此,為提高羊群的整體水平,合理調整羊群結構,有計劃地補充青年母羊,適當增加3~4歲母羊在羊群中的比例,及時發現並淘汰老、弱或繁殖力低下的母羊,就成為畜牧式作者麵對且必須要解決的問題,在此基礎上,就能達到提高羊群整體繁殖率的目的。
四、實行兩次配種
母羊發情時,實行雙重配種或兩次配種輸精,可以提高母羊的準胎率,增加產雙羔的幾率,由於母羊發情時間短(一般30個小時左右),paichudeluanzishengcunshijianyejiaoduan,erqieyoudemuyangluanzichengshushijianbuyizhi,yinciduimuyangdeyicijiaopeihuoshujingzhuntaidejilvjiaodi,qienanyishijiaoduodeluanzicanyushoujing。caiyongliangcipeizhongfangfa,keshimuyangshengzhidaoneijingchangbaochijuyoushoujingnenglidejingzicunzai,zengjiashoujingjihui。shengchanshangchangcaiyongdefangfashi:對確認發情的母羊,在12及24小時後各配種輸精一次,一般兩次輸精間隔10~12小時,可有效提高母羊的受胎率。
五、羔羊早期斷奶
羔羊適時提早斷奶,縮短母羊哺乳時間可促使母羊提早發情,實現一年多產。早期斷奶羔羊需要人為訓練羔羊的采食能力,在羔羊10~15日齡時喂一些鮮嫩的青草、菜葉或細軟易消化的幹草、yepian,yicijigaoyangxiaohuadaoxiaohuajinengdezaoqixingchenghexianggaoyangzizhucaishifangxiangdeguodu。weishigaoyangjinzaochiliao,kaishishikejiangyumihedoumianhunhezhuzhouweishihuobanrushuizhongranggaoyangyinshi,yekejiangchaoguodejingliaoshengzaipennei,ranggaoyangzijiqutianshi,yibangaoyangdao20~30日後即可正常采食。
六、注射藥物或激素,誘導母羊產多羔
yongyizhongnengcujinluanchaolvpaochengshuheduopailuandewuzhi,yiyidingjiliangzhushedaomuyangtinei,tongguojisutiaojie,qianghuamuyangxingjinenghuodong,cujinmuyangluanzidefayuhechengshu,congerpaichujiaoduoluanzicanyushoujing,dadaoyitaiduogaodemude。jushiyan,zhusheyunmaxueqinghuozhusheshuanggaosu、雙胎素,對誘導母羊產多羔,都有一定的效果.
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