這種方法用於尚無生產性能記錄的幼鵝、育成期的鵝或公鵝某些性能(如產蛋性能)的de選xuan擇ze。將jiang血xue緣yuan優you良liang的de選xuan留liu作zuo種zhong用yong,血xue緣yuan差cha的de淘tao汰tai。選xuan擇ze時shi,與yu個ge體ti親qin緣yuan關guan係xi愈yu近jin的de影ying響xiang愈yu大da,因yin此ci,在zai根gen據ju係xi譜pu資zi料liao選xuan擇ze時shi,一yi般ban隻zhi比bi較jiao親qin代dai和he祖zu代dai即ji可ke。
(2)根據本身成績選擇
benshenchengjishizhongeshengchanxingnengzaiyidingsiyangguanlitiaojianxiadexianshibiaoxian,fanyinglegaigetiyijingdadaodeshengchanshuiping。getibenshenchengjidexuanzezhiyouduiyichuanligaodexingzhuang,rutizhong、蛋重、生長速度等有效;而遺傳力低的性狀,如繁殖力性狀和適應性性狀則需要采用家係選擇方才有效。
(3)根據同胞成績選擇
tongbaoshizhiquantongbaohebantongbaoliangzhongqinyuanguanxi。tongbaoxuanzejijiaxixuanze。tongfutongmudexiongdijiemeichengquantongbao,tongfuyimuhuotongmuyifudexiongdijiemeichengbantongbao。zhezhongxuanzefangfaduizaoqixuanzegongezuiweikexing,kegenjuzhonggongedequantongbaohuobantongbaojiemeidechandanchengjilaigucegaigongedechandanxingneng。dangquantongbaohuobantongbaoshuyueduoshi,tongbaojunzhideyichuanliyuda,duiyuyixiediyichuanlixingzhuang,yongtongbaoziliaojinxingxuanzhongdekekaoxingyezengda。ciwai,duiyixiebunenghuotiduliangdexingzhuang,rututipinzhi、tuzailvdeng,caiyongtongbaoxuanzejiugengyouyiyile。zheliyaoshuomingdeshitongbaoceyanzhinengqubiejiaxizhijiandeyoulie,erduitongyijiaxineidegetijiunanyijianbieqihaohuaile。
(4)根據後裔成績選擇
後(hou)裔(yi)就(jiu)是(shi)子(zi)女(nv),根(gen)據(ju)後(hou)裔(yi)成(cheng)績(ji)選(xuan)種(zhong)是(shi)選(xuan)擇(ze)種(zhong)鵝(e)的(de)最(zui)好(hao)形(xing)式(shi)。因(yin)為(wei)這(zhe)種(zhong)方(fang)法(fa)選(xuan)出(chu)的(de)種(zhong)鵝(e)不(bu)僅(jin)本(ben)身(shen)是(shi)優(you)秀(xiu)的(de)個(ge)體(ti),而(er)且(qie)能(neng)把(ba)其(qi)優(you)秀(xiu)性(xing)能(neng)遺(yi)傳(chuan)給(gei)下(xia)一(yi)代(dai)。種(zhong)鵝(e)的(de)利(li)用(yong)年(nian)限(xian)可(ke)長(chang)達(da)4~5年。因此,這種選擇方法在鵝的育種工作中更有實用價值。
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