长毛兔的性别鉴定及公兔去势技法

1、长毛兔的性别鉴定及公兔去势技法1长毛兔的性别鉴定1.1刚出生的仔兔鉴别刚出生的长毛兔仔兔较难辨别性别，需要观察其阴部孔洞形状和与肛门之间的距离。观察时把手洗净，把仔兔轻轻地倒握在手中，然后用食指向背侧压住尾巴，用另一只手的拇指和食指分开其阴部，露出红色黏膜仔细观察。阴部孔洞扁形略大，与肛门大小相近，距肛门较近的为母兔；孔洞圆形，略小于肛门，距肛门较远者为公兔。1.2断奶后的幼兔鉴别断奶后的幼兔可直接检查外生殖器。即用右手抓住仔兔双耳和颈背部领皮，左手以中指和食指夹住其尾巴，大拇指轻轻向外侧翻开生殖器，若呈“0”形，并可翻出圆柱状突起者为公兔；若呈“v”形，下端裂缝延至肛门者，为母兔。1.3幼兔

2、及青年兔的鉴别3月龄以上的幼兔和青年兔的鉴别比较容易。检查的方法是：右手抓住被检兔的双耳和颈背部领皮，左手中指和食指夹住尾巴，手掌托起臀部，用拇指推开生殖孔，其口突出呈圆柱形者是公兔；呈尖叶状，裂缝延至下方接近肛门者为母兔。也可观察有无阴囊，即可区分。2家兔去势简易技法家兔去势后性情温驯便于饲养管理，在同样饲养条件下比不去势的公兔肉质和毛质量均好，长毛兔的产毛量也能高。凡是不作为种用的公兔，都应及早去势转入生产群。去势一般在2.5-3月龄性成熟以后立即进行，因为这时睾丸已经下垂到腹壁以外。家兔主要有以下三种简招。(1)注药物。此方法比较简单，安全可靠。具体操作方法是：一人将待去势的公兔保定，在

3、阴囊纵轴前方用75%酒精消毒后，视公兔大小，每个睾丸内注入适量的5%碘酊，或5%氧化钙溶液，或5%甲醛溶液1.52毫升。一般来讲，注射药物后睾丸很快开始肿胀，35天后自然消肿，7-8天后睾丸明显萎缩，公兔失去性欲，半月左右睾丸干枯脱落。(2)结扎法。一人保定公兔，另一人用5%碘酊消毒公兔阴囊皮肤，将睾丸挤入阴囊后捏住，用消毒后的尼龙线或细橡皮筋将阴囊根部扎紧，使血管封闭，血液不能流至睾丸，睾丸因缺血而坏死，最后干枯脱落，达到去势的目的。但是这种去势方法开始几天睾丸也会出现水肿，公兔比较痛苦，甚至影响采食和增重。(3)阉割法。去势前，将公兔用冬眠灵按5毫克千克体重饮水或拌入饲料服用催眠，待公兔昏

4、迷后将公兔背朝下，头部稍低，适当保定，将睾丸从腹股沟管中挤入阴囊内，捏紧不使睾丸滑动。用5%碘酊消毒术部，再用75%酒精脱碘。用消过毒的手术刀顺睾丸体纵轴方向切开皮肤，开口1厘米左右，随即挤出睾丸，然后用5%碘酊消毒即可。若切口较大，可进行缝合处理。去势后，应将公兔放人消毒后的笼内，以免伤口感染化脓。正常情况下35天即可康复。张金平（山东省枣庄市新昌路金榜嘉园2号）their own conditions to develop the correct road, the maximum to avoid investment risk, gain profit.(three) vigorous

5、ly promote the brand. to establish brand awareness, awareness of the use of brand, brand value, brand acquisition performance, enhance the competitive strength. concentrated manpower, careful planning, packaging and publicity of a number of unique, market influence and coverage of the brand, the imp

6、lementation of key breakthroughs, to enhance the competitive strength, walking business road the competition of alienation and characteristics, the pursuit of stability and development of the market.(four) to promote the integration of resources. to further broaden their horizons, effective integrat

7、ion of resources within the group, the city resources, other industries and regional resources, mutual trust, mutual benefit, seeking win-win principle, in the framework of national policies and regulations, strict inspection and argumentation, legal consultation, examination and approval procedures

8、, strict regulation of economic activities, attract injection the social investment to the industry group, to achieve leveraging the development, ensure that the value of state-owned assets.(five) to strengthen the construction management personnel. strengthen the management of education and trainin

9、g of cadres and workers of the existing business, firmly establish the concept of the market, enhance the sense of crisis to adapt to market competition, the sense of urgency, improve the ability to respond to market competition, improve management and operation of the market. at the same time, acco

10、rding to the need of industrial development, vigorously the introduction of high-quality management management personnel, and strive to build a high-quality professional management team, hard work, and promote the entire workforce knowledge structure, age structure, structure optimization and upgrading ability, enhance core competitiveness, adapt to the need of market competition.(six) seriously study the policy for policy. serious research about social support the development of cultural undertakings in the country and the xx policy, especially the policy of industrial development, finan