<blockquote id="o00vk"></blockquote>
  • <p id="o00vk"></p>
    <cite id="o00vk"><rp id="o00vk"></rp></cite>
    <sub id="o00vk"><rt id="o00vk"></rt></sub>
    国产xxxxx免费视频,少妇人妻偷人精品系列,国产在线不卡精品网站,69国产精品久久久久久人妻,人妻18毛片A级毛片免费看,538porm在线看国产亚洲,国精品91人妻无码一区二区三区,欧美性猛交XXXX乱大交

    關(guān)于長毛兔的生長規(guī)律

    發(fā)布日期:2016-03-01 來源:http://www.tunjie.cn 發(fā)布人:admin

      我們都知道長毛兔的經(jīng)濟價值很高,尤其是兔毛,一斤可達120元左右,作為長毛兔之鄉(xiāng)蒙陰長毛兔的養(yǎng)殖更是聞名天下,下面我們蒙陰長毛兔廠家給大家介紹的是蒙陰長毛兔生長規(guī)律。

      We all know that hares economic value is very high, especially the rabbit hair, a kilo of up to 120 yuan, as the hometown of hares darkened hares farming is more famous, below we darkened hares manufacturer to introduce is darkened hares growth rule.

      長毛兔在整個生產(chǎn)過程中要經(jīng)過三個階段:

      Hares in the whole process to go through three stages:

      一、胚胎期 從母兔受精妊娠到仔兔出生時為止,成為胚胎期,平均為30天,一般可分為胚期(妊娠1-12天)、胎期(妊娠13-18天)和胎兒期(妊娠19-30天)。

      A, embryonic period To seed the rabbit was born from mother rabbit fertilization pregnancy, become the embryonic period, an average of 30 days, generally can be divided into embryonic stage (1-12 days of pregnancy), fetal period (13 to 18 days of pregnancy) and fetal period (gestational 19-30 days).

      二、哺乳期 從出生到斷奶為哺乳期。初生仔兔閉眼封耳,裸體無毛。據(jù)測定,德系安哥拉兔平均初生重為60克左右,1周齡體重可增加1倍以上,1月齡體重可增加10倍左右。

      Second, from birth to weaning breastfeeding for lactation. Primary seed rabbit eyes ears, naked glabrous. , according to the determination of ashkenazi Angora rabbit average birth weight of 60 grams, more than 1 weeks weight can increase 1 times, 1 months to gain about 10 times.

      三、斷奶期 斷奶期也稱為成長期,斷奶之后,長毛兔的生長速度逐漸減慢,從增重或相對生長速度來看,都表現(xiàn)為前期較快,后期較慢。斷奶后幼兔和青年兔的生長速度,主要受遺傳因素和環(huán)境因素(飼料、管理、自然條件)的影響。

      Three, weaning period Weaning period, also known as growth period, after weaning, the growth of the hares speed gradually slow down, from the point of absolute weight gain or relative growth rate, is characterized by rapid early, late slower. After weaning immature rabbit and speed of the growth of the young rabbit, mainly by genetic factors and environmental factors (feed, management, and the influence of natural condition).

     

    主站蜘蛛池模板: 国产在线拍偷自揄拍精品| 中文字幕无码免费久久99| 国产日本欧美高清免费区| 专干老肥熟女视频| 亚洲人成77777在线播放网站| 亚洲色大成网站WWW久久| 天堂网亚洲综合在线| 蜜桃视频一区二区在线看| 国产开嫩苞实拍在线播放视频| 最新日韩精品视频在线| 亚洲av成人午夜福利| 18禁黄污吃奶免费看网站| 《熟妇的荡欲》电影| yy111111人妻影院| 五月开心播播网| 麻豆国产97在线 | 中文| 好吊视频一区二区三区在线| 精品无码一区二区三区水蜜桃| 亚洲一区二区三区偷拍女厕| 国产精品久久久久久久影院| 人妻少妇精品视频三区二区| 黑人巨大精品oideo| 国产va免费精品高清在线| 国产乱人伦av在线无码| 国产精品自在线拍国产电影| 红杏亚洲影院一区二区三区| 狠狠躁夜夜躁人人爽天天开心婷婷 | 国产在线国偷精品免费看 | 亚洲人成网站在线播放2019| 日韩av片无码一区二区不卡| 欧美日韩国产精品爽爽| 精品一区二区三区在线观看视频| 亚洲国产成人麻豆精品| 国产精品福利自产拍久久| 日本熟妇XXXX潮喷视频| 久久成人国产精品免费软件| 丰满少妇内射一区| 欧美日韩一区二区在线播放| 欧美 亚洲 国产 另类| 国内精品久久黄色三级乱| 国产在线观看不卡网址|