A low-loss and high-efficiency artificial propagation method for Taiwan loach

An artificial breeding and high-efficiency technology, applied in fish farming, climate change adaptation, animal husbandry, etc., can solve the problems of lack of clear reports, high mortality, lack of theoretical basis, etc., to reduce mortality losses, improve synchronous maturity, The effect of increasing the rate of oxytocin

Inactive Publication Date: 2021-05-04
TONGREN POLYTECHNIC COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Li Qian, Ru Jingen, Liu Shili, et al. Artificial breeding experiment of "Taiwan loach"[J]. Hebei Fishery, 2014(9):43-46.; Ding Chenlong, Wang Xinhai, Wang Xuanpeng, et al. Breeding of Taiwan loach and local loach, Comparison of gonad development and growth[J]. Journal of Tianjin Normal University (Natural Edition), 2016, 36(3):69-73. The artificial breeding of Taiwan loach is also blooming everywhere in mainland China, but the parent loach is not properly selected , Sperm extraction and high mortality after reproduction of female loach have always been important reasons for the high cost of reproduction
At present, there are some reports on the artificial propagation of this variety in scientific literature and invention patents, but some reports lack a certain theoretical basis, and some are not in line with the actual production.
There is no clear report on how to effectively select brood loach, avoid killing males, and reduce postnatal mortality of brood loach (especially female loach) so as to reduce reproductive loss and improve reproductive efficiency.

Method used

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  • A low-loss and high-efficiency artificial propagation method for Taiwan loach

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Example 1 (early May):

[0024] According to the above step (1), 50 kg of parent loach was cultivated; in early May, 300 12-month-old female loach and 300 male loach were selected according to the above step (2); artificial induction was carried out according to the above step (3), and the overall induced labor rate reached 94%. %; Carry out artificial insemination according to the above step (4), the overall fertilization rate reaches 98%, and the hatching rate reaches 85%; follow the above steps (1), (2), (3), (4), especially step (5) A series of operations were carried out for postpartum pro-loach care, and the survival rate of post-partum pro-loach reached 86%.

Embodiment 2

[0025] Example 2 (early July):

[0026] Follow the above steps (1) to cultivate 60 kg of parent loach; in early July, select 300 14-month-old female loach and 300 male loach according to the above step (2); artificially induce labor according to the above step (3), and the overall induced labor rate reaches 95%. %; Carry out artificial insemination according to the above step (4), the overall fertilization rate reaches 99%, and the hatching rate reaches 83%; follow the above steps (1), (2), (3), (4), especially step (5) A series of operations were carried out for postpartum pro-loach care, and the postpartum pro-loach survival rate reached 85%.

Embodiment 3

[0027] Example 3 (early September):

[0028] According to the above step (1), 70 kg of parent loach was cultivated; in early September, 300 16-month-old female loach and 300 male loach were selected according to the above step (2); artificial induction was carried out according to the above step (3), and the overall induction rate reached 92 %; Carry out artificial insemination according to the above step (4), the overall fertilization rate reaches 98%, and the hatching rate reaches 82%; follow the above steps (1), (2), (3), (4), especially step (5) A series of operations were carried out for postpartum pro-loach care, and the survival rate of post-partum pro-loach reached 87%.

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Abstract

The invention discloses a low-loss and high-efficiency artificial propagation method for Taiwan loach, which is characterized in that it comprises the following steps: (1) Prenatal cultivation of species of loach: selecting fast-growing and robust individuals from the first-year-old fish of the offspring one year in advance The commercial loach is used as a seed loach, and it is intensively cultivated for 0.5-3 months. (2) The selection of the seed loach: the water temperature reaches 18 degrees Celsius, and each group of male and female loach is placed in the parent loach classification screening tank for screening and matching; (3) Artificial induced labor ; (4) artificial insemination; (5) postpartum pro-loach care. Effectively select brood loach, improve the simultaneous sexual maturation of male and female and the same batch of brood loach, increase the induced labor rate, emergence rate and artificial reproduction efficiency, and reduce the death loss of brood loach in artificial breeding.

Description

technical field [0001] The invention relates to the field of artificial propagation of loach, in particular to a method for artificial propagation and seedling raising of Taiwan loach with low loss and high efficiency. Background technique [0002] In 2012, it was directly introduced to the mainland from Taiwan, China. It has the characteristics of large individuals, fast growth, high yield, no mud drilling, basically no difference in size between male and female, strong immunity, and low bait coefficient. half of the country. Li Qian, Ru Jingen, Liu Shili, et al. Artificial breeding experiment of "Taiwan loach"[J]. Hebei Fishery, 2014(9):43-46.; Ding Chenlong, Wang Xinhai, Wang Xuanpeng, et al. Breeding of Taiwan loach and local loach, Comparison of gonad development and growth[J]. Journal of Tianjin Normal University (Natural Edition), 2016, 36(3):69-73. The artificial breeding of Taiwan loach is also blooming everywhere in mainland China, but the parent loach is not prop...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01K61/10A01K61/17A01K61/95A23K20/163A23K20/174A23K20/195A23K50/80
CPCA23K20/163A23K20/174A23K20/195A23K50/80A01K61/10A01K61/17A01K61/95Y02A40/81Y02A40/818
Inventor 李艳华胡佳罗刚先大强罗实亚伍春艳王鲁杨秀萍
Owner TONGREN POLYTECHNIC COLLEGE
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