<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

        肉兔配種要注意什么?

        發布日期:2021-12-27 來源:http://m.51haodu.com 發布人:admin

        http://m.51haodu.com一、科學確定初配年齡
        1、 Scientifically determine the initial mating age
        確定肉兔的初配年齡,主要根據體重和月齡來決定,在正常飼養管理條件下,公母兔體重達到該品種標準體重的70%時,即已達到體成熟,可開始配種繁殖。一般小型品種初配年齡為4-5月齡,體重2.5-3千克。中型品種為5-6月齡,體重3.5-4千克。大型品種為7-8月齡,體重4.5-6千克。因公兔性成熟年齡比母兔遲,所以公兔的初配年齡應比母兔遲1個月左右。為了防止早配和近親交配,在家兔性成熟前應公母分開飼養。
        The initial mating age of meat rabbits is mainly determined according to the weight and month age. Under normal feeding and management conditions, when the weight of male and female rabbits reaches 70% of the standard weight of the variety, they have reached body maturity and can start breeding. Generally, the initial mating age of small varieties is 4-5 months old and the weight is 2.5-3kg. The medium-sized varieties are 5-6 months old and weigh 3.5-4kg. The large variety is 7-8 months old and weighs 4.5-6 kg. Because the sexual maturity age of male rabbits is later than that of female rabbits, the initial mating age of male rabbits should be about 1 month later than that of female rabbits. In order to prevent early mating and inbreeding, male and female rabbits should be raised separately before sexual maturity.
        二、科學確定使用年限
        2、 Scientifically determine the service life
        適時淘汰和更新兔群。公母兔的使用年限一般為3-4年,如果體質健壯,使用合理,配種利用年限可適當延長。但過于衰老,其受胎率、產仔數和成活率均差,所產仔兔品質也差,所以要適時淘汰和更新兔群。一般每年淘汰1/3,做到3年-輪換,讓適齡種兔在兔群中占優勢。
        Timely eliminate and update the rabbit population. The service life of male and female rabbits is generally 3-4 years. If they are strong and reasonably used, the service life of breeding can be appropriately extended. However, it is too old, its conception rate, litter size and survival rate are poor, and the quality of newborn rabbits is also poor. Therefore, it is necessary to eliminate and update the rabbit population in time. Generally, 1 / 3 of the rabbits are eliminated every year, so that the three-year rotation can be achieved, so that the breeding rabbits of school age have an absolute advantage in the rabbit population.
        蒙陰長毛兔
        三、科學安排配種繁殖季節
        3、 Arrange breeding season scientifically
        掌握好肉兔的配種繁殖季節是提高仔兔成活率的重要環節,肉兔繁殖雖無明顯的季節性,一年四季均可配種繁殖,但因不同季節的溫度、光照、營養狀況等不同,對母兔的受胎率和仔兔成活率均有一定的影響。
        Mastering the breeding season of meat rabbits is an important link to improve the survival rate of young rabbits. Although the breeding of meat rabbits has no obvious seasonality and can be bred all year round, it has a certain impact on the conception rate of female rabbits and the survival rate of young rabbits due to the different temperature, light and nutritional status in different seasons.
        1、春、秋季。氣候溫和、干燥、種兔性欲旺盛,母兔受胎率高,產仔數多,仔兔成活率高,是肉兔配種繁殖的好季節,要抓好配種繁殖工作。不少兔場春繁大都采用頻密產仔法(血配),連產2-3胎后,再行調整,恢復體力,8月份開始秋繁。
        1. Spring and autumn. The climate is mild and dry, the sexual desire of breeding rabbits is strong, the conception rate of female rabbits is high, the number of births is large, and the survival rate of young rabbits is high. It is the best season for meat rabbit breeding. We should pay attention to breeding. Many rabbit farms mostly adopt the frequency and density method (blood matching) for spring breeding. After giving birth to 2-3 fetuses, they will adjust again to recover their physical strength, and autumn breeding will begin in August.
        2、夏季。凡舍溫在30攝氏度以上的時節,應停止配種繁殖,一般是在每年的6月份7月中旬停止配種繁殖。但如母兔體質健壯,又有防暑條件,仍可適當安排配種繁殖。
        2. Summer. When the shewen is above 30 ℃, breeding should be stopped, generally from June to mid July every year. However, if the female rabbit is strong and has heatstroke prevention conditions, breeding can still be arranged appropriately.
        以上就是蒙陰長毛兔給大家分享的主要內容,更多的精彩內容請大家繼續關注我們:http://m.51haodu.com
        These are the main contents shared by Mengyin long haired rabbit. Please continue to pay attention to us for more wonderful contents: http://m.51haodu.com
        主站蜘蛛池模板: 国产自产c区| 国产在线自在拍91精品黑人| 精品久久久久久无码国产| 日本变态网址中国字幕| 亚洲av无码专区亚洲av伊甸园| 国产熟女真实乱精品51| 精品国产成人一区二区| 欧美日韩精品一区二区三区不卡| 久久国产精品色av免费看| 精品免费av一区二区三区 | 51精品视频一区二区三区| 日韩无码视频网站| 久久久噜噜噜久久熟女色| 中国亚州女人69内射少妇| 97国产在线观看| 国产成人精品综合久久久久| 老熟妇Av| 久久精品国产福利亚洲av| 网曝黑料猛料吃瓜网| 成年女人A级毛片免| 久久久黄色片| 亚洲国产av永久精品成人| 久艾草在线精品视频在线观看| 国产一区二区三区精品综合| 99热精品国产三级在线| 日本精品视频一区二区| 国产成人亚洲精品狼色在线| 免费看女人与善牲交| 亚洲国产欧美日韩第一香蕉| 国产av一区二区三区福利| 国产一级特黄高清免费视频| 国产成熟妇女性视频电影| 久久99国产乱子伦精品免| 国产av剧情无码精品色午夜| 波多野结系列18部无码观看a| 成人国产精品日本在线| 精品一区二区三区四区五区| 国产台湾无码av片在线观看| 99久久精品免费视频| 99久久99这里只有免费费精品| 国内精品久久人妻朋友|