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一只野兔多少钱 野兔多少钱一斤

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品牌: 一只野兔多少钱 野兔多少钱一斤
单价: 130.00元/只
起订: 10 只
供货总量: 6000 只
发货期限: 自买家付款之日起 1 天内发货
所在地: 山东 济宁市
有效期至: 长期有效
最后更新: 2019-06-16 03:56
浏览次数: 122
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 一只野兔多少钱 野兔多少钱一斤 13元一斤老客户先养后付款   全国包送_满意付款 代办检疫_送货到家_质优价廉纯野兔多少钱一斤 正宗野兔多少钱一斤 杂交野兔苗市场价格 野兔的价格 一只野兔多少钱 野兔多少钱一斤 野兔价格多少钱一斤 成年长毛兔多少钱一只 安哥拉兔多少钱一只 野兔价格多少钱一只  2019兔子多少钱一斤 2019年兔子价格表 正宗野兔多少钱一斤  兔子价格表 野生的野兔多少钱一斤 纯野兔多少钱一斤 杂交野兔多少钱一斤选育良种兔的三种方法
在发展家庭养兔中,如何不断培育出生产性能高、繁殖能力强、适应性能好、遗传性能稳定的良种兔,是大家为关注的问题。这里介绍几种农户自行选育良种兔的简便方法,供在生产中参考:  
   1.近交系选育法。假定某村中有20-30户养兔专业户,可以从中选出饲养管理好的10户自愿组织起来,进行近交繁育。10户当中每户各选出一只的公兔,采用人工授精方法配种。每年都可用这种方法选出20-30只母兔,用良的一只公兔进行配种。这样连续3代之后,将其中15家自繁自养的母兔集中放在一家中同时饲养,分别作好记录。每家提供的试验兔不少于30只,将其观察的结果进行综合分析评定,看其中那3家的免,分别形成三个近交系。再将3个的进行杂交组合试验,再选出2-3个系进行配套繁殖,形成商品代。用这种选育方法提纯速度快、杂交势显著。缺点是近交系兔的本身生产性能可能会降低。2.闭锁群选育方法。这种方法实际上就是本品种或本品系内自行选育法。其特点是:本品种或品系的内部,在避免近亲繁殖的情况下,进行家系选育。方法是:从农村某些联营户内选出5户养兔的,将他们分别编号为(1)、(2)、(3)、(4)、(5)号。每家每年选出一只的公兔与30D50只母兔,用人工授精的办法进行交配,每年从繁育后代中选出两只的公兔(其中一只作后备兔),按下列方式调配:(1)→(2)→(3)→(4)→(5)→(1),每年如此,连续4年。然后再将每家的记录逐个进行统计分析,后必然会从中发现,某一家的公兔与各家的母兔交配后所产生的后代仔兔均好。那么就选用这家的公兔与其余各家的母兔进行交配,这样就可行成一个新品系或新品种 野兔多少钱一只 宠物长毛兔品种  野兔苗批发多少钱一只 2019野兔多少钱一斤 :正宗野兔多少钱一斤 野兔市场价 野兔销路 野兔行情

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