Parent fish selection method for improving reproductive efficiency of tilapia
A technology for reproduction efficiency and tilapia, which is applied in the field of broodstock selection to achieve the effects of reducing breeding time, improving reproduction rate and increasing reproduction success rate.
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Embodiment approach 1
[0008] Implementation Mode 1: Selection of Broodstock of Olia tilapia
[0009] 1. Selection before wintering. The Oria tilapia fry that were bred in May have grown to about 350 grams in October of the second year, reaching sexual maturity for the first time, and are selected before overwintering. 1. Male fish selection. The male "genital process" is obvious and triangular in shape. Use the mother finger and index finger to push from front to back on the rear abdomen, and a translucent liquid flows out from the front of the genital process. Other traits are selected according to the selection requirements of traditional broodstock (big size, good shape, Bright body color, clear and well-proportioned body pattern or caudal fin stripes). 2. Female fish selection. In the natural state, the female genital pores are clearly visible and narrowly elliptical, and other traits are selected according to the selection requirements of traditional broodstock. The unsuitable individuals ...
Embodiment approach 2
[0010] Implementation Mode 2: Selection of broodstock of Gifu tilapia
[0011] 1. Selection before wintering. The gifu tilapia fry that were bred in June grew to about 400 grams in October of that year. They reached sexual maturity for the first time and were selected before overwintering. 1. Male fish selection. The male "genital process" is obvious and triangular in shape. Use the mother finger and index finger to push from front to back on the rear abdomen, and a translucent liquid flows out from the front of the genital process. Other traits are selected according to the selection requirements of traditional broodstock (big size, good shape, Bright body color, clear and well-proportioned body pattern or caudal fin stripes). 2. Female fish selection. In the natural state, the female genital pores are clearly visible and narrowly elliptical, and other traits are selected according to the selection requirements of traditional broodstock. The unsuitable individuals were el...
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