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Old 05-03-2011, 02:33 PM   #1
uwisa5873126
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Default atmosphere max shoes 神仙鱼的亲鱼培养

神仙鱼的亲鱼培养,我一直认为是最难的,其实任何一种 鱼要得到一对非常可心的亲鱼都是很难的,wholesale nike shoes,而对于神仙鱼来说就更难一些。为什么呢?这是神仙 鱼的繁殖习性决定的,神仙鱼是一种自由恋爱的鱼,只有雌雄双方相互“对了眼”才能结合,结合以后就是恩爱的 夫妻,Mens Air Max 24-7 Black/Blue Nike Shoes,没有特殊情况他们会 白头到老的,而你会在一年中得到8-9窝小神仙。虽然开始难一点但后来的收获却比卵胎生鱼大的多。
如何培养亲鱼呢?首先要去选择一月龄左右的小鱼,当然要健壮,鳍条形态好、体态好、游动快速而优美、食欲旺 盛、纹理清晰、色彩艳丽。 而数量是这里的关键!最少不能少于6条,最多呢?不能多于二十条。Why?我知道你肯定要问。据数学上计算 概率的方法,6条才会保证有雌雄 一对(具体算法就不说了,这是数学问题)。而最多就是纯经验的结论了,原因 ,太多在养殖时会有困难。二十条留做亲鱼的神仙鱼,最小也要用1米2的缸,2011 ventilation max Daily Wisdom 101216 Handicap。再多你用多大的?除非你想做专业鱼贩。还有一点,鱼也和人一样,选择余地大了也会“挑花眼”,最后成了老 姑娘、老光棍没人要了。(我曾有一缸二十多条神仙,开春时一对也不出,还整天打架。我一气分成二缸与别的鱼 混养观赏了,反而出了三对!)

另外,还要说说神仙鱼选种遗传问题。在这个方面来说,动物遗传都是基本相同的,具体到神仙鱼来说,一般你要 得到与亲鱼品种相同的子鱼 ,最简单的方法就是直系血缘繁殖,但这样做是话,第一代还好,在第二子系中就会有大量的畸形、退化及弱体出 现,不利于长期养殖,不过对一般爱好者来说仍是最好的选择;第二种方法就是逆交繁殖,就是用直系中的第一代 的雄性与第三代的雌性或第一代的雄性与支系中的第二代的雌性交配(什么乱七八糟的,其实就是爷爷和孙女或叔 叔和侄女,nike air jordan retro 。。你杀了我吧!!!。);第三种方法是外系交配繁殖,多到鱼市打听,选择不同进鱼渠道的小鱼又同一品种的作为种鱼,这种方法是 能得到最健康、强壮子代的方法,同时对爱好者来说也是最难的。我一般采取第二种方法,因为我有 两个很熟的卖家,而对于刚刚开始养殖与繁殖的鱼友,我会推荐第一种方法,毕竟,它是最简单而又 最有效的,Womens Air Max 90 Popular White/Black Nike Shoes。神仙鱼的性成熟大约需要十个月,也就是今年购买的小鱼到明年才能繁殖。为什么一定要购买1月龄的小鱼呢? 这是因为只有在这时候才有可能 得到合格的亲鱼,如购买成鱼,则大多是被鱼主筛选后的,鱼市上很少能有好的成鱼,genuine ventilation jordans websites 山西煤老板用2,就算你运气好赶上了,air max shoes,但成鱼的喂养状况不一,鱼场有可能会用代有激素的饲料促使小鱼快速生长,表面上是无法判断的。这种鱼是不 能用来繁殖用的,你花很大精力给它创造环境而它们大多会出现受精不良或畸型。而且只有从小一起长大的鱼才会 相互友好,更有感情,有更大的成对机会,比率较高。(青梅竹马吗?:―)) 在亲鱼培养期间,要有鲜活、高营养、多样化的饵料,Mens Air Zenyth Green/Silver/White Nike Shoes,要定时投喂,喂养空间要大,这样才能培育出体型大、体格健壮的亲鱼。
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Old 05-03-2011, 02:42 PM   #2
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