nongjiaguimosiyangdanya,chufeiweileshengchanzhongdanxuyaodayangyidingbilidegongyawai,duoshuyangyahubudayanggongya,renweigongyashiliangda,zhiyoutouru,meiyouchanchu。zheyangzuoweibeileyaqundeshengtaiguilv,zuizhonghuidaozhiyangyaxiaoyixiajiang。
母鴨的生殖生理特點 母mu鴨ya體ti內nei左zuo側ce有you一yi個ge發fa達da的de卵luan巢chao,其qi功gong能neng是shi排pai卵luan造zao蛋dan,在zai右you側ce還hai有you一yi個ge很hen不bu發fa達da的de雄xiong性xing腺xian。如ru果guo鴨ya群qun中zhong有you適shi量liang的de公gong鴨ya,則ze公gong鴨ya分fen泌mi的de雄xiong性xing荷he爾er蒙meng會hui抑yi製zhi母mu鴨ya體ti內nei右you側ce雄xiong性xing腺xian的de發fa育yu,從cong而er誘you導dao母mu鴨ya卵luan巢chao多duo排pai卵luan、多產蛋。
當dang鴨ya群qun中zhong沒mei有you或huo缺que少shao公gong鴨ya時shi,就jiu沒mei有you足zu夠gou的de雄xiong性xing荷he爾er蒙meng來lai抑yi製zhi母mu鴨ya的de這zhe種zhong性xing腺xian發fa育yu。在zai特te定ding的de情qing況kuang下xia,個ge別bie強qiang健jian母mu鴨ya體ti內nei右you側ce的de雄xiong性xing腺xian就jiu會hui發fa育yu起qi來lai,產chan生sheng大da量liang的de雄xiong性xing荷he爾er蒙meng,反fan過guo來lai抑yi製zhi左zuo側ce卵luan巢chao的de正zheng常chang功gong能neng。於yu是shi個ge別bie母mu鴨ya不bu再zai生sheng蛋dan,呈cheng現xian性xing反fan轉zhuan現xian象xiang,羽yu毛mao逐zhu漸jian變bian得de光guang豔yan漂piao亮liang起qi來lai,酷ku似si公gong鴨ya。據ju觀guan察cha,母mu鴨ya在zai臨lin近jin開kai產chan時shi和he產chan蛋dan高gao峰feng期qi,常chang常chang三san五wu成cheng群qun尾wei隨sui公gong鴨ya,或huo靜jing浮fu水shui麵mian等deng候hou公gong鴨ya。無wu論lun是shi戲xi水shui還hai是shi覓mi食shi,公gong母mu混hun養yang的de鴨ya群qun都dou顯xian得de生sheng機ji勃bo勃bo、富有活力。
公母搭養比例
根據養蛋鴨的目的和群體大小決定搭養比例。如果是種鴨群,為保證種蛋有較高的受精率,公母比例以0.5∶10~1∶10為宜。如果以生產商品蛋為目的,則公母比例可小些,30隻~50隻的蛋鴨群搭養1隻公鴨就可以了;上百隻的蛋鴨群,至少搭養2隻公鴨;300隻~500隻的蛋鴨群,公鴨比例以1∶100~2∶100為宜。
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