久久青草国产免费频观,青青草视频原手机在线观看,av在线色,国产精品一区二区在线观看完整版,免费观看成人稀缺视频在线播放,香蕉网站在线,日本免费人成视频播放,国产精品一区在线蜜臀

        長毛兔的養殖中如何引進種兔選兔

        發布日期:2017-09-28 來源:http://www.parmwkd.cn 發布人:admin

        一、稱體重45日齡的仔兔,體重應在0.75公斤以上,低于這個標準的仔兔則不要購買。

        First, weighing 45 days old rabbit, the weight should be more than 0.75 kilograms, below this standard Aberdeen rabbit, do not buy.

        二、看體型頭大、四肢有力、軀體勻稱、眼明有神、行動敏捷的是好兔,切忌購買有疥癬病或有生理缺陷的長毛兔。

        Two see figure, big head, strong limbs, body symmetry, eyes of God, agile is a good rabbit, should buy a scab or a physical defect of Angora rabbit.

        三、看兔毛長毛兔的兔毛以純白、濃密、細長為好。辨別方法:用手指在長毛兔的背部拽下一小撮兔毛,觀察兔毛的顏色、粗細、長短等。

        Three, look at the hair of Angora rabbit hair with white, thick and thin as well. Methods: identify the fingers in the back pulled a handful of Angora rabbit hair, hair color, to observe the thickness and length etc..

        四、辨公母鑒別幼兔的公母要察看其生殖孔。具體方法:用右手抓住長毛兔的頸部皮膚將其提起,左手托住長毛兔的臀部,并用手指壓其陰部。如果緊靠肛門的下方有與肛門大小相似的扁形孔穴,則表明該兔是母兔;如孔穴為圓形,小于肛門且離肛門稍遠,則表明該兔為公兔。

        Four, distinguish between male and female, young rabbits should observe their reproductive holes. How to do it: hold the neck of the long haired rabbit with your right hand, lift it up, hold the rump of the long haired rabbit with your left hand, and press your finger to the perineum. If immediately below is similar to the anus and anal sized flat hole, indicating that the rabbits are females; as for the circular cavity, anus and less than a little far away from the anus, then the rabbit for male rabbit.

        五、分年齡一般以長毛兔趾甲的顏色和形態來判斷其年齡。趾甲的基部為粉紅色,尖部為白色的是幼兔;1歲兔趾甲上的紅色與白色面積大致相等;1歲以上的兔,其趾甲上的白色多于紅色。青年兔的趾甲短而平直,隱而不露;中年兔的趾甲銳利而外露;老年兔的趾甲露出毛外1/2。

        Five, the age of the general rabbit rabbit nails in color and shape to determine their age. The base of the toenail is pink and the tip is white. It is a young rabbit. The red and white area of the 1 year old rabbit's toenail is approximately equal; the white of the toenail is more red than that of the red rabbit at the age of 1. The young rabbit's nails are short and straight, hidden and exposed; the nails of middle-aged rabbits are sharp and exposed; the toenails of old rabbits show 1/2 outside their hair.

         

        主站蜘蛛池模板: 蕲春县| 91中文字幕一区在线| 无码专区狠狠躁天天躁| 啦啦啦视频在线日韩精品| 久久精品国产99精品国产亚洲性色| 无码国产精品一区二区vr老人| 男人天堂av在线成人av| 久久久久久久久久免免费精品| 97久久久人妻精品区一| 天天射色综合| 成午夜精品一区二区三区| av一区无码不卡毛片| 狠狠久久五月综合色和啪| 亚洲一区亚洲二区亚洲三区| 日日碰狠狠躁久久躁蜜桃| 蜜桃视频在线观看网站免费| 中文字幕丝袜人妻av| 91精品91久久久久久| 欧美videosfree性派对| 亚洲欧美人成网站aaa| 欧洲免费一区二区三区视频| 亚洲国产综合精品久久av| 一本一道波多野结衣av中文| 级毛片无码av| 中文字幕日韩精品欧美一区| 青青草原国产精品啪啪视频| 亚洲一区不卡在线导航| 国产三级精品三级男人的天堂,| 久久久精品电影| 亚洲熟妇av日韩熟妇在线| 91免费片| 亚洲人成网站色7799在线播放| 日本一区二区三区观看视频| 日韩精品极品视频在线免费| 亚洲国产99精品国自产拍| 国产精品亚洲一区二区在线观看| 香蕉啪视频在线观看视频久| 亚洲av免费不卡一区二区| 日韩精品欧美激情国产一区| аⅴ天堂国产最新版在线中文| 蜜桃色永久入口|