<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

        種兔母兔難產的造成的三項原因?

        發布日期:2016-12-02 來源:http://www.51haodu.com 發布人:admin

        1、初產適時配種。種兔母兔初次配種年齡在5.5個月齡左右,體重在2.75公斤左右。如果初產年齡、體重過高、過重,初產種兔母兔的難產率有增高的趨勢。

        1 primiparous, timely breeding. Rabbit rabbit mother first breeding at the age of 5.5 months old, weighing 2.75 kg. If the age of first, overweight, overweight, primiparous female rabbit rabbit dystocia rate increased.

        2、種兔母兔懷孕期提供適宜的營養。有些兔子養殖戶有一個誤區:認為種兔一旦懷孕,飼喂的越多越好,飼料營養越高越好,其實據山西省農科院畜牧獸醫研究所兔子養殖研究室在開展“種兔飼養標準及預混料”課題研究中發現,對于懷孕的種兔母兔,采用飼料營養水平為低能量(10.47兆焦/千克)、中蛋白水平(粗蛋白17.5%),限制飼養(170克/天)的飼養方式,窩產仔數更高,未發現有難產情況發生.

        2, rabbit rabbit pregnancy to provide appropriate nutrition. Some rabbit farmers have a misunderstanding that the rabbit once pregnant, feeding more, feed nutrition is good, in fact, according to the rabbit of Shanxi Academy of animal husbandry and Veterinary Research Institute of aquaculture research laboratory in carry out the "rabbit feeding standard and premix" found in the research, for pregnant female rabbit rabbit, the feed nutrition level low energy (10 trillion and 470 billion kJ / kg) and protein levels (17.5% crude protein), restricted feeding (170 g / day) feeding, litter size was not found to have the highest, dystocia occurs.

        而采用高能量、高蛋白的營養水平,產仔數減少,分娩障礙發生率較高。因為高能量、高蛋白造成胎兒過大,占據子宮空間,引起死胎增加,同時胎兒過大,難產的風險增大。但如果懷孕種兔母兔體質過弱,由于產力不足,也易造成難產。因此在生產中根據種兔母兔的體況,調節飼喂量,保持7~8成膘情就可以了,待分娩后再逐漸增加飼喂量。

        The nutrition level of high energy, high protein, decreased litter size, birth disorder incidence. Because of the high energy, high protein cause fetal uterus is too large, occupy the space, causing stillbirth increased, while the fetus is too large, the increased risk of dystocia. But if the pregnant female rabbit rabbit body is too weak, because the production capacity is insufficient, but also easy to cause dystocia. Therefore, in the production of female rabbit rabbit according to the body condition, adjust feeding amount, keep 7 ~ 8 of the can, stay after delivery and then gradually increase the feeding amount.

        3、胎位不正。種兔難產也可能是胎位、胎向、胎勢不正引起。

        3, malposition. Rabbit dystocia may also be the fetal position, fetal and fetal potential is not caused to.

        山東省蒙陰鑫華種兔場的長毛兔提供技術支持,更多精彩內容請進入:http://www.51haodu.com,我們會傾情為您解答。

        Provide technical support for the Shandong Province, Mengyin Xinhua Tuchang Angora rabbit, more exciting content, please enter: http://www.51haodu.com, we will love to answer your questions.

         

        主站蜘蛛池模板: 菠萝蜜视频在线观看| 四虎在线播放亚洲成人| 亚洲国产精品久久久久久久 | 中文字幕精品av一区二区五区| 人人妻人人爽人人澡av| 国内老司机精品视频在线播出| 欧美牲交黑粗硬大| 国产又爽又大又黄a片| 亚洲日韩一区二区| 无线日本视频精品| 国产麻豆md传媒视频| 亚洲a∨无码国产精品久久网| 国产成人理论在线视频观看| 国产视频一区二区三区四区视频| 超级乱淫片午夜电影网福利| 国产丝袜在线精品丝袜不卡| 毛片一区二区在线看| 少妇高潮叫床在线播放| 制服丝袜国产精品| 国产一级特黄aa大片软件| 亚洲精品成人片在线观看| 国产公开久久人人97超碰| 国产精品无码久久四虎| 饥渴的熟妇张开腿呻吟视频 | 欧美最新精品videossexohd| 亚洲高清免费在线观看| 久久综合一个色综合网| 日韩精品夜色二区91久久久| 亚洲一区二区三区在线视频| 欧美专区日韩视频人妻| 在线播放亚洲人成电影| 国产欧美综合在线观看第十页| 亚成区成线在人线免费99| 中文字字幕人妻中文| 无码国产精品一区二区免费式影视| 欧美国产精品不卡在线观看| 亚洲综合网一区二区三区| 性色香蕉av久久久天天网| 久久精品免视看国产成人| 亚洲欧洲中文日韩av乱码| 日韩精品成人区中文字幕|