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(yǎng)殖中如何引進種兔選兔

        發(fā)布日期:2017-09-28 來源:http://m.parmwkd.cn 發(fā)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(tài)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: 99精品国产成人一区二区在线| 国产传媒在线视频| AV在线毛片| 国产成社区在线视频观看| 丝袜 亚洲 另类 欧美| 在线天堂中文一区二区三区| 综合网五月| 国产成人亚洲合集青青草原精品| 丝袜美腿亚洲综合伊人| 国产一区二区三区视频大全 | 国产在线视频自拍| 欧美国产日韩一区二区三区精品影视| 制服丝袜有码中文字幕在线| 丰满少妇人妻无码超清| 日韩av在线不卡免费| 福州市| 中文字幕日本女优在线观看| 国产成人AV综合久久| 国产亚洲熟妇在线视频| 午夜福利国产精品小视频| 美女国产毛片a区内射| 亚洲天堂激情av在线| 在线亚洲AV成人无码一区小说| 久久精品熟女不卡av高清| 成年午夜无码av片在线观看| 亚洲国产中文字幕在线视频综合| 国产一区二区精品久久凹凸| 国产精品毛片va一区二区三区 | 亚洲最新中文字幕一区| 亚洲人av高清无码| 人妻中文字幕不卡精品| 亚洲女同视频在线观看| 亚洲电影中文字幕| 香蕉久久夜色精品国产| 激情人妻中出中文字幕一区| 亚欧美日韩香蕉在线播放视频| 国产在线观看高清不卡| 欧美成a人片在线观看| 国产亚洲无码1024| 精品中文字幕手机在线| 亚洲AV无码一区二区水蜜桃|