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Feed for hybrid fish and preparation method and application thereof

A fish feed and raw material technology, applied in the field of hybrid fish feed and its preparation, can solve the problems of slowing down of fish growth, weight loss, and increasing the amount of ammonia nitrogen in the breeding system, etc.

Pending Publication Date: 2019-11-29
SHANGHAI OCEAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the protein content in the feed is lower than the normal requirement of the fish body, the fish will slow down its growth rate, and even show symptoms such as growth stagnation, weight loss, and susceptibility to diseases; when the protein content is too high, the excess protein may be used as Energy is consumed, and this part of protein consumed as energy will increase the amount of ammonia nitrogen in the breeding system and cause water pollution

Method used

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  • Feed for hybrid fish and preparation method and application thereof
  • Feed for hybrid fish and preparation method and application thereof
  • Feed for hybrid fish and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0077] Example 1: Crossbreeding of bream and bream and construction of backcross offspring

[0078] 1 experimental fish

[0079] The female parent used in the experiment is Megalobrama amblycephala (MA) "Pujiang No. 1" fine variety (approval unit: National Aquatic Raw Variety Approval Committee, approval number: GS-01-001-2000); the male parent is Dianshanhuqiao The original species of Culter alburnus (CA) (taken from the Shanghai Dianyuan Aquatic Breeding Farm) has a slender body, flat sides, in the shape of willow leaves, a straight back of the head, and a raised back of the head. The parents are 3-year-old, sexually mature and well-developed, and they are both kept in the Genetic Breeding Center of Bory Bream, Ministry of Agriculture, Shanghai Ocean University.

[0080] 2 experimental reagents

[0081] Chorionic gonadotropin, luteinizing hormone releasing hormone, colchicine, DAPI (Germany Partec), PHA (Shanghai Sunshine), NaCl, KCl, disodium hydrogen phosphate (12H 2 O)...

Embodiment 2

[0085] Example 2: Research on feed for offspring of crossbreeding and backcrossing bream and bream

[0086] 1 Experimental design and feed formulation

[0087] In this study, the dietary protein level was taken as the influencing factor, and other factors were controlled relatively constant. Among them, the five levels of protein are 25%, 30%, 35%, 40% and 45%, respectively. The animal protein source of feed preparation is Peruvian fish meal (TASA super steam red fish meal), and the plant protein source is soybean meal and rapeseed meal (purchased from Shanghai Dongchen Grain and Oil Co., Ltd.). Soybean oil was used as the fat source, and the fat level of the feed was fixed at about 4.5%. Sugars are provided by wheat flour and wheat bran to balance the level of nitrogen-free extract. α-starch is used as the binder, effective phosphorus is adjusted with calcium dihydrogen phosphate; vitamins and mineral salts are supplemented with premixed materials. The experimental feed f...

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Abstract

The invention discloses a feed for hybrid fish. The feed includes fish meal, soybean meal, rapeseed meal, wheat bran, wheat middling, monocalcium phosphate, a premix (including the following components: CuSO4.5H2O, FeSO4.7H2O, ZnSO4.7H2O, MnSO4.4H2O, Na2SeO3, KI, vitamin A, vitamin D, vitamin E, vitamin K3, vitamin B1, vitamin B2, vitamin B6, vitamin B12, vitamin C, nicotinic acid, pantothenic acid, folic acid and choline), salt, soybean oil, and an adhesive. The invention also discloses a preparation method of the hybrid fish feed and application of the hybrid fish feed in increasing weight gain rate of megalobrama amblycephala and culter alburnus hybrid and backcross descendants, reducing feed coefficient, increasing intestinal villi, enhancing specific growth rate and improving the expression of trypsin gene TRY, chymotrypsin gene CTRL1 and pancreatic elastase gene ELA1.

Description

technical field [0001] The invention belongs to the field of aquatic science and relates to a feed for hybrid fish, a preparation method and application thereof. Background technique [0002] According to statistics, in terms of fish hybridization, there are about 212 natural hybrids in the world, of which seawater fishes account for about 30 species, and the remaining hybrids are freshwater fishes. The work of hybrid breeding has developed rapidly in our country, and a number of new hybrid varieties have been successfully bred so far, covering interspecific and even intergenus hybrids, which have made significant contributions to my country's aquaculture industry. [0003] Two, three, four and haploid fish may appear in the hybrid offspring of fish. Therefore, the application of hybrid breeding is not limited to the use of heterosis, but also can use the method of hybridization to obtain polyploid offspring. [0004] The optimal demand for fish protein is to meet the prot...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23K50/80A23K10/22A23K10/37A23K10/30A23K20/26A23K20/158A23K20/163A23K20/174A23K20/20A23K20/105A23K40/10A01K61/10
CPCA23K50/80A23K10/22A23K10/37A23K10/30A23K20/26A23K20/158A23K20/163A23K20/174A23K20/30A23K20/105A23K40/10A01K61/10Y02A40/818Y02A40/81Y02P60/87
Inventor 邹曙明郑国栋陈杰郭丹丹吴成宾
Owner SHANGHAI OCEAN UNIV
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