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Nutrition-enriched forage for parents fish of rockfish, and its pren. method

A nutritional enhancement, grouper technology, applied in animal feed, animal feed, climate change adaptation and other directions, can solve the problems of low survival rate of newly hatched fry, low reproductive performance of broodstock, poor quality of fertilized eggs, etc., and achieve the quality of fertilized eggs. The effect of improving the quality of and larvae, solving the palatability of the bait, and scavenging excessive free radicals

Inactive Publication Date: 2005-12-21
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the general carnivorous broodstock in seawater do not eat artificial feed, so the broodstock breeding is to directly feed fresh trash fish or squid, but if only fresh trash fish is used for feeding, the reproductive performance of the broodstock is low, and it is easy to cause diseases, and the quality of fertilized eggs Very poor, very low survival rate of newly hatched fry

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Embodiment 1: Weighing V according to the proportion E 180g, V C 360g, α-starch 900g, fish meal 7200g, put various nutrients in a blender and mix well, then add 900g of fish oil, then add 3L of water and stir to form a ball, and store it at -20°C. When feeding, press 2% of the total weight of the broodstock weighs 1000g of medlar with an average weight of about 20g, cuts the abdominal cavity of the medlar, and inserts about 2g of a group-shaped nutritional enhancer into the abdominal cavity of each medlin. After 60 days of nutritional fortification, the broodstock The diameter of fertilized eggs, the diameter of oil globules, the length of larvae, the volume of yolk sac, and the survival rate of larvae during the nutrient transformation period were far better than those of the control group fed only fresh miscellaneous fish (see Table 1). reproductive performance requirements.

Embodiment 2

[0017] Embodiment two: Weigh egg lecithin 900g in proportion, V E 90g, V C 180g, α-starch 450g, fish meal 1800g, put various nutrients in a blender and mix well, then add 450g fish oil, then add 1.5L water and stir to form a ball, and store it at -20°C. When feeding, Weigh 500g of medlin with an average weight of about 20g according to 1% of the total weight of the broodstock, cut open the abdominal cavity of the medlin, stuff about 2.5g of a group-shaped nutritional enhancer into the abdominal cavity of each medlin, and go through 60 days of nutritional fortification , the diameter of the fertilized eggs, the diameter of the oil globule, the body length of the larvae, the volume of the yolk sac, and the survival rate of the larvae during the nutritional transformation period of the parent fish are far better than those of the control group (see Table 1) that only feed fresh miscellaneous fish. Fish broodstock reproductive performance requirements.

Embodiment 3

[0018] Embodiment three: weigh astaxanthin 2.7g in proportion, V E 540g, V C 135g, α-starch 2700g, fish meal 5400g, put various nutrients in a blender and mix well, then add 1350g fish oil, then add 3L water and stir to form a ball, and store it at -20°C. When feeding, press 3% of the total weight of the parent fish weighs about 20g of medlar 2250g, cuts the abdominal cavity of the medlin, and stuffs about 2g of a group-shaped nutritional enhancer into the abdominal cavity of each medlin. After 60 days of nutritional fortification, the broodstock fertilized eggs Egg diameter, oil globule diameter, body length of larvae, yolk sac volume, and survival rate of larvae during nutritional transformation were far better than those of the control group fed only fresh miscellaneous fish (see Table 1), achieving enhanced reproductive performance of grouper broodstock requirements.

[0019]

[0020] Note: Different letters in the superscript indicate significant difference ...

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PUM

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Abstract

A nutritive-enriched feed for the parent rockfish is prepared from fresh small fish and / or squid, and nutrients including fish oil, VE, VC lecithin, fish powder, alpha-starch or dextrin, egg lecithin and astaxanthin through proportionally mixing said nutrients with water, and inserting the mixture in the cavity of small fish or squid.

Description

technical field [0001] The invention relates to a nutrient-enhanced feed for grouper broodstock breeding period and a preparation method thereof. Background technique [0002] Grouper is a kind of rare and precious seawater cultured economic fish. In Southeast Asian countries, Japan, my country Taiwan and the coast of South China, the scale of grouper farming is increasing, and the demand for grouper fry is also increasing. However, natural fry It is far from meeting the needs of the aquaculture industry, and the survival rate is extremely low, and the nutrition of broodstock directly affects the quality of fertilized eggs and larvae, so the nutrition of broodstock is very important. [0003] However, there are very few researches on broodstock nutrition, especially marine fish broodstock nutrition. Because the general carnivorous broodstock in seawater do not eat artificial feed, so the broodstock breeding is to directly feed fresh trash fish or squid, but if only fresh tra...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A23K10/22A23K20/10A23K20/158A23K20/163A23K20/174A23K50/80
CPCY02A40/818
Inventor 刘永坚田丽霞肖伟平
Owner SUN YAT SEN UNIV
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