甘肃11选5

  • 电话:18953193603
  • 手机:15165988860
  • 网址:http://www.yunsyb.com
  • 总部地址:济南市凤凰山路
  • 分部地址:济南市五区服务点
    济南二手鱼缸公司讲解金鱼生育的最佳年龄
    来源:甘肃11选5http://www.yunsyb.com  2015-07-30 13:50:03
    金鱼为理想的生育年龄是2~3龄的金鱼,肥瘦适中的健康鱼只宜作留种亲鱼。因为2~3龄的鱼,品种特征和遗传基因均已相对稳定,性欲旺盛,卵子和精子的生命力强,所以,受精率和孵化率都较高。济南二手鱼缸
    The goldfish the most ideal child-bearing age is 2 ~ 3 age goldfish, FeiShou moderate health fish just suitable for planting dear fish. Because of the 2 to 3 age of fish, breed characteristics and genetic genes have been relatively stable, strong sexual desire, eggs and sperm vitality, and so the fertilization rate and hatching rate are higher.
    四龄以上的金鱼,生殖机能已开始衰退,特别是体形较大的亲鱼,行动迟缓,其受精率、孵化率均明显降低。
    Four years old goldfish, the reproductive function has begun to decline, especially in the larger size of the pro fish, slow to act, the fertilization rate, hatching rate were significantly reduced.
    刚满一龄的金鱼,其生殖系统虽已发育完善,具有一定的繁育能力,但是品种特征还未充分发育显现,遗传基因还未完全稳定,产卵次数和产卵量也较少,因此,这两种鱼好不要作主要品种的亲鱼。
    Just with their goldfish, the reproductive system although development is perfect, has certain ability of breeding, but breed characteristics is still not fully development manifestation, genetic gene is not completely stable, spawning frequency and oviposition amount less. Therefore, two kinds of fish, it is best not to as main varieties of broodstock.
    在选配中还要注意一个问题,那就是不管年龄大小,过肥的雌金鱼都不宜留作种鱼。因为过肥的金鱼往往因体内较多的营养转化为脂肪,积于腹腔内,因而卵巢反而得不到充分的养分,鱼卵缺乏正常发育所需的营养,这样不仅会引起鱼卵的先天不足,而且由于脂肪过厚而影响到雌鱼的正常排卵,甚至会造成难产;同时成熟的鱼卵大部分积于腹腔内,造成鱼腹膨胀、行动迟缓、食欲不振等现象,从而逐渐引起溃疡死亡。
    In the selection of a note, is that regardless of age, female goldfish are not too fat for fish. Because fat goldfish too often because of higher body conversion of nutrients into fat, accumulate in the abdominal cavity. So ovary but not to adequate nutrients, roe, lack of nutrients needed for normal development, this will not only cause the eggs congenitally deficient, and because the fat, thick and the influence to the female's normal ovulation, and even result in dystocia; at the same time mature eggs most product in the intraperitoneal, expansion of the belly of the fish, slow-moving, loss of appetite caused by the phenomenon of, and gradually ulcers caused by death.
    所以,过分肥胖的金鱼不宜选作亲鱼。当然,过瘦的金鱼也不宜留作亲鱼,因为金鱼从小就处在挤压、缺氧、受饥挨饿、营养不良的环境中,身体必然瘦弱多病,生殖系统的发育当然也会受到或多或少的影响。
    So, too much fat goldfish should not be chosen as a parent fish. , of course, thin goldfish also should not be left for broodstock, because goldfish from an early age in extrusion, hypoxia, famine, malnutrition, body must thin and sickly, the development of the reproductive system would, of course, also have more or less influence.
    用这种长期营养不良的金鱼作种鱼,鱼卵和精液相应地也得不到生长发育所必须的营养成分,往往造成鱼卵不易成熟,精液不能充盈,严重时,还有可能导致雌鱼不产卵,雄鱼精子活力差,甚至出现死精现象。
    In this long-term malnutrition goldfish as a species of fish, eggs and semen accordingly to nutrients necessary for growth growth, often resulting in eggs was not easy to mature, seminal fluid cannot filling, severe, there may cause females to lay eggs, male poor sperm motility, even dead sperm phenomenon.
    更多关于济南鱼缸回收,济南鱼缸定做,济南二手鱼缸回收,济南鱼缸搬运,济南鱼缸清洗,济南鱼缸保养,济南鱼缸维修等新闻资讯敬请关注济南印象汇水族服务有限公司
甘肃11选5 甘肃11选5走势图 甘肃11选5官网 甘肃11选5 甘肃11选5注册 甘肃11选5 甘肃11选5 甘肃11选5 甘肃11选5 甘肃11选5