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当鉴别亲鱼成熟度时,往往会遇到这种情况:有的亲鱼卵巢轮廓呈“U”形,看起来似乎成熟得很好;而有的亲鱼卵巢轮廓呈“V”形,好象成熟较差,因而,在进行人工催产时,常常选择了前者,而忽视了后者。其实,“U”形腹亲鱼的催产效果并不及“V”形腹亲鱼,因为亲鱼的催产效果与亲鱼卵的发育程度有直接关系,亲鱼卵的发育程度又与亲鱼的营养有很大关系。“U”形腹亲鱼因怀卵量大,亲鱼摄食所提供的营养不能完全满足
When identifying broodstock maturity, often encounter this situation: some pro-fish ovarian profile was “U” shape, seems to be well-matured; while some broodstock ovarian contour was “V” shape, as if more mature Poor, therefore, in the artificial labor, often choose the former, while ignoring the latter. Actually, the effect of “U” shaped broodstock is not as good as that of “V” shaped broodstock because the pro-producing effect of broodstock is directly related to the development of broodstock. The development of broodstock is also related to the broodstock nutrition. “U” shaped broodstock due to large fecundity, broodstock feeding nutrition provided can not be fully satisfied