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Breeding method beneficial to improvement of spawning quantity and quality of pharaoh cuttlefish

A tabby squid and breeding method technology, which is applied in fish farming, climate change adaptation, animal feed and other directions, can solve the problems that the number of larvae cannot meet the requirements of artificial breeding and the hatching rate is not high, and can accelerate the development of egg cells, enhance immunity, reduce The effect of the percentage of dead eggs

Inactive Publication Date: 2019-11-05
ZHEJIANG OCEAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the lack of understanding of the environmental conditions for the development of fertilized eggs of tiger squid, the hatching rate is not high, and the number of larvae obtained is far from meeting the needs of artificial breeding. Breeding method becomes very important

Method used

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  • Breeding method beneficial to improvement of spawning quantity and quality of pharaoh cuttlefish
  • Breeding method beneficial to improvement of spawning quantity and quality of pharaoh cuttlefish
  • Breeding method beneficial to improvement of spawning quantity and quality of pharaoh cuttlefish

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] The present embodiment provides a kind of cultivation method that is beneficial to improving the quantity and quality of laying eggs of tiger squid, comprising the steps of:

[0039] 1) Domestication of broodstock: Inject pretreated seawater into the domestication pond and hang the ovipositors inside, select healthy adult tiger squid broodstock with no trauma and plump carcass to enter the pond for domestication, and feed live shrimp mixed with marine algae, daily feeding amount It is 4% of its body weight, and the bait is fed once in the morning and evening, and the pond is cleaned and watered every day;

[0040] 2) Reproductive regulation: During the domestication period of the parent body, the reproductive regulation is carried out in the following ways: periodic starvation and then feeding, and temperature-variable cultivation in a gradient-variable temperature mode;

[0041] 3) Egg collection: After 3 weeks of domestication, the parent body will lay eggs naturally,...

Embodiment 2～9

[0056] Embodiments 2 to 9 respectively provide several other culture methods that are beneficial to improving the quantity and quality of tiger squid spawning, which are similar to Embodiment 1, and the differences are as described in Table 1.

[0057] The difference between the culture method in table 1, embodiment 2~9 and embodiment 1

[0058]

[0059] Note: in Table 1, " / " means that the operation of the embodiment is consistent with that of embodiment 1; "not performed" means that the operation is not performed in the embodiment.

experiment example 1

[0061] Sampling and counting the egg long diameter, egg short diameter and egg weight of fertilized eggs in Examples 1 to 6 respectively, the statistical results are as follows: figure 1 shown. Depend on figure 1 It can be seen from the diagram that the fertilized eggs in the preferred embodiment 1 of the present application are obviously better than those in Examples 2-6 in terms of size and weight, indicating that the fertilized eggs in Example 1 are of higher quality and are a kind of high-efficiency, A cost-effective method of farming tiger squid.

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Abstract

The invention relates to the technical field of pharaoh cuttlefish breeding, in particular to a breeding method beneficial to improvement of the spawning quantity and quality of pharaoh cuttlefish. The breeding method comprises the steps: (1) parent domestication, wherein adult pharaoh cuttlefish parents are put into a pond for domestication and fed with live shrimps and / or live crabs and / or livefish mixed with marine algae; (2) reproduction regulation, wherein periodic starvation and refeeding are sequentially carried out, and temperature change culture is carried out in a gradient temperature change mode; (3) spawn collection; (4) keeping of fresh and alive pharaoh cuttlefish, wherein hatching of fertilized spawns cultured on a large scale is inhibited, alive and fresh keeping is carried out by combining a C-type natriuretic peptide with cysteamine, and finally hatching and larva breeding are carried out. The method is beneficial to improvement of the physique of the pharaoh cuttlefish parents, promotes earlier and faster sexual maturation of the parents, enhances the mating probability of the pharaoh cuttlefish parents, realizes synchronous sexual maturation of the parents andimprovement of the quality of reproductive gametes, remarkably reduces the conversion ratio of normal fertilized spawns to fertilized inkjet spawns, accelerates the hatching of cuttlefish larvae through alive and fresh keeping, promotes the larval development and further improves the survival rate of larvae.

Description

technical field [0001] The invention relates to the technical field of tiger squid breeding, in particular to a breeding method that is beneficial to improving the quantity and quality of tiger squid laying eggs. Background technique [0002] The tiger squid (Sepia pharaonis), belonging to the phylum Molluscs, Cephalopoda, Sepia, and Squididae, is widely distributed in the Philippine Islands, the Malay Archipelago, the eastern, northern, and western parts of Oceania, as well as the coastal waters of India, the Red Sea, and the South my country Sea. It is widely loved by consumers because of its large size, high protein content, delicious taste and rich nutrition. In recent years, its chilled market price is about 30 yuan / kg, and the price of live fresh fish has reached 120 yuan / kg, which is a famous high-end aquatic product. For a long time, commercial tabby squid has been mainly sourced from marine fishing. Since the 1980s, due to overfishing and the deterioration of the e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/00A23K50/80A23K10/22A23K10/30
CPCA01K61/00A23K10/22A23K10/30A23K50/80Y02A40/81
Inventor 刘炳舰
Owner ZHEJIANG OCEAN UNIV
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