Group breeding method for micropterus salmoides easy to eat compound feed
A compound feed and group breeding technology, applied in biochemical equipment and methods, microbial measurement/inspection, etc., can solve problems such as further verification of biological functions
Active Publication Date: 2021-06-18
PEARL RIVER FISHERY RES INST CHINESE ACAD OF FISHERY SCI
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Problems solved by technology
However, the biological functions of these candidate genes and genotypes have not been further validated in largemouth bass cultured on alternative feeds
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[0039] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some of the embodiments of the present invention, but not all of them. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments of the present invention belong to the protection scope of the present invention.
[0040] Unless otherwise defined, all technical terms used hereinafter have the same meanings as commonly understood by those skilled in the art. The terminology used herein is only for the purpose of describing specific embodiments, and is not intended to limit the protection scope of the present invention.
[0041] Unless otherwise specified, the various reagents and raw materials used in the present invention are commercially available products or products that can be prepared by known methods.
[0042] Materials and methods
[0043] 2.1. Experimental fish and sa...
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Abstract
The invention provides a group breeding method for micropterus salmoides easy to eat compound feed, and belongs to the technical field of aquatic product breeding and biological genes. According to the invention, the expression modes of POMC genotypes after fasting and re-feeding are compared. Physiological indexes of various ingestion and growth performance, including weight, cortisol, growth hormone, insulin-like growth factor-1 and blood sugar and correlation of their contents with the POMC genotypes, are detected. The regulation and control effects of different POMC genotypes in food ingestion and inhibition of micropterus salmoides are fully illustrated. The domestication of the micropterus salmoides by replacing bait fish with the compound feed has been well developed in the aquaculture industry; and the research is beneficial to the molecular marker-assisted breeding of the feeding habits of the micropterus salmoides and is used for obtaining micropterus salmoide groups with rapid growth, high utilization rate of the compound feed and high domestication efficiency ingestion characters. The method can be applied to subsequent further improved variety breeding of the micropterus salmoide groups easy to eat the compound feed.
Description
technical field [0001] The invention relates to the technical fields of aquatic breeding and biological genes, and relates to a method for population selection of largemouth bass easy-to-eat compound feed. Background technique [0002] Largemouth bass (Micropterus salmoides), introduced to mainland China from North America in the 1980s, is now one of the most productive species in aquaculture, with an annual production of 477,808 tons in 2019 (China Fishery Statistical Yearbook 2020). Wild largemouth bass are carnivorous fish that prefer to eat small fish, crayfish, amphibians, and insects in their natural environment, while commercially farmed largemouth bass feed on frozen or live forage fish. Forage fish cause huge production costs and overexploitation of marine resources, and at the same time, excessive forage fish can drastically deteriorate water quality. In order to mitigate the negative impact of fishmeal, inevitably, there is a trend to use formula feeds as substit...
Claims
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IPC IPC(8): C12Q1/6888C12Q1/6858
CPCC12Q1/6888C12Q1/6858C12Q2600/124C12Q2600/156C12Q2600/172C12Q2531/113C12Q2527/107Y02A40/81
Inventor 胡婕孙承熙叶星
Owner PEARL RIVER FISHERY RES INST CHINESE ACAD OF FISHERY SCI