METHOD FOR SELECTIVE BREEDING OF FAST-GROWING STRAIN OF LINED SEAHORSE

摘要

An method for selective breeding of a fast-growing strain of lined seahorse, including: (1) selecting high-quality lined seahorse parents as a base population for selective breeding; (2) performing prenatal intensified breeding; (3) performing pairing and mating, and rearing the juveniles thereof; (4) performing selective breeding in three junctures with different selection proportions; (5) pairing the saved adult lined seahorses, wherein those with low vitality, having injuries on the body surface, or having a dysplastic brood pouch or gonad are culled, and a selection proportion of 10% for every generation is maintained thereafter; (6) repeating steps (2) through (5) for at least four times to obtain a high-quality strain of lined seahorse with improved weight and body length and stable growth. The method can be used for selective breeding of a new strain with high quality and high yield.

主权项

1. A method for selective breeding of a fast-growing strain of lined seahorses, comprising:
step (1), selecting high-quality lined seahorse parents as a base population for selective breeding; step (2), performing prenatal intensified breeding on the lined seahorse parents from the step (1) at an age of 3-5 months; step (3), pairing and mating the lined seahorse parents from the step (2), and rearing reproduced juveniles thereof; step (4), performing selective breeding on male and female juveniles from the step (3) in the following three junctures with different selection proportions: at an age of 2-3 months which is a fast-growing stage, selecting juveniles with a highest growth rate and high vitality; when selected juveniles grow to a marketable stage at an age of 4-5 months, selecting marketable juveniles with a highest growth rate and high vitality; when selected marketable juveniles grow to a sexual maturity stage at an age of 6 months, selecting adult lined seahorses with a highest growth rate and high vitality; step (5), pairing the adult lined seahorses from step (4), wherein those with low vitality, having injuries on a body surface, or having a dysplastic brood pouch or gonad are culled to maintain a selection proportion of 10% for every generation; and step (6), repeating the steps (2) through (5) for at least four times to obtain a high-quality strain of lined seahorses with an improved weight and body length and a stable growth.