<center id="7kism"><video id="7kism"><tbody id="7kism"></tbody></video></center>

<bdo id="7kism"><legend id="7kism"></legend></bdo>

<nav id="7kism"></nav>
<bdo id="7kism"></bdo>

        91精品免费久久久久久久久,国产欧美亚洲日韩图片,午夜高清国产拍精品福利,欧美成人免费全部观看,五月婷久久麻豆国产,欧美另类人妻制服丝袜,97se色综合一区二区二区,色婷婷综合和线在线

        長毛兔講解自然交配配種時期的確定

        發布日期:2014-11-04 來源:http://www.51haodu.com 發布人:admin

        ⑴ 根據母兔發情表現確定配種時間。肉母兔的發情周期變化較大,一般在8-15天,發情期一般是3天左右。發情表現為舉止不安,食欲減退,常以前肢扒箱或后肢"頓足",有時還有銜草做窩現象,外陰部潮濕紅腫。整個發情期分為前期、中期、后期,其判斷主要看陰戶的變化情況:發情前期變得較濕潤、微腫、粉紅色;中期濕潤、腫大、呈大紅色(俗稱老紅);后期濕潤、腫大、紫黑色。更佳的配種時間是發情的中后期。
        To determine the mating time according to the female rabbit estrus expression. Mother rabbit meat estrous cycle changes larger, generally in the 8-15 days, the estrous period is generally 3 days. Estrus behavior manner discomfort, loss of appetite, often in the forelimb or hindlimb grilled box "stomp", and sometimes Pyrolae nest phenomenon, vulva damp redness. The entire season is divided into prophase, metaphase, anaphase, the judgment mainly to see the changes: vulva proestrus become more moist, slightly swollen, pink; mid moist, swelling, a big red (commonly known as the old red); the late wet, swelling, purple black. The best time is the late estrus in breeding.

        ⑵ 試情法確定交配時期。把母兔放入公兔欄內,當公兔追逐爬跨時,如母兔作接受交配姿勢,說明母兔已發情,即可進行配種。否則,未發情,不能交配。
        The determination of the mating period test conditions the method. The mother rabbit into the male rabbit column, when the male rabbit chase intromission, such as mother rabbit accepts the mating posture, illustrate the mother rabbit has estrus, can be breeding. Otherwise, not in estrus, not mating.
        ⑶ 血配。即母兔產仔后1-2天進行配種。
        The blood distribution. That the mother rabbit litter performed 1-2 days after mating.
        長毛兔http://www.51haodu.com/ 
        主站蜘蛛池模板: 国产日韩精品欧美一区灰| 亚洲中文无码av永久app| 欧美一区二区午夜福利在线yw| 久热在线中文字幕色999舞| 亚洲国产精品18久久久久久| 亚洲欧美日本韩国综合在线观看| 亚洲一区二区三区久久不卡| 亚洲av乱码一区二区三区香蕉| 欧美人与动zozo在线播放| 久久亚洲精少妇毛片午夜无码| 四虎网址| 亚洲av无码专区在线播放| 国产情侣一区二区| 亚洲中文字幕手机在线第一页| 精品国产v一区二区三区| 少妇 人妻 欧美| 麻豆精品新a v视频中文字幕 | 国产成人无码专区| 成人亚洲欧美久久久久| 国内自拍小视频在线看| 亚洲国产欧美在线人成最新| 农夫在线精品视频导航| 亚洲色中色| aa视频在线观看播放免费| 国产精品自产在线观看一| 麻豆国产在线精品国偷产拍| 国产日韩欧美亚洲综合首页| 国产亚洲AV综合人人澡精品| av中文字幕潮喷人妻系列| 天天做天天摸天天爽天天爱| 五月天丁香婷婷亚洲欧洲国产| 少妇bbbb| 亚洲av成人久久18禁| 女人18毛片a级毛片视频| 亚洲制服丝袜av一区二区三区| 日韩免费视频一一二区| 久精品色妇丰满人妻| 四虎国产成人免费观看| 一级毛片在线播放免费| 苍井空无码丰满尖叫高潮| 中国无码人妻丰满熟妇啪啪软件|