Expanded feed for resisting fatty liver of tilapia and preparation method

Abstract

The invention discloses expanded feed for resisting the fatty liver of tilapia and a preparation method of the expanded feed. The feed is prepared from, by mass, 3% to 8% of domestic fish meal, 15% to 25% of bean pulp, 15% to 30% of double-low rapeseed meal, 10% to 15% of cottonseed meal, 15% to 23% of strong flour, 8% to 15% of corn, 6% to 12% of DDGS, 1% to 2% of freshwater fish oil, 1% to 3% of soybean oil, 1% to 2% of monocalcium phosphate, 1% to 3% of bentonite, 1% to 2% of premix of vitamin and mineral salt, 0.1% to 0.5% of crystalline lysine, 0.1% to 0.5% of free methionine and 1% to 2% of compound fatty liver resisting preparation. Through reasonable component matching, all the nutritional requirements of tilapia are met, the stability of the feed in water is good, the tilapia grows fast, the feed conversion rate is high, and the survival rate is high. Meanwhile, according to the feed, the secretion and metabolic capability of the liver cells of the tilapia can be obviously improved, the liver function and disease resistance of the tilapia can be improved, the organ-body ratio and the fat-body ratio can be decreased, the meat taking rate can be increased, and culture benefits are good.

Description

technical field [0001] The invention relates to a tilapia feed, which belongs to the technical field of fish compound feed, in particular to an extruded feed for resisting fatty liver of tilapia and a preparation method thereof. Background technique [0002] Tilapia belongs to the family Cichlidae of the order Perciformes, commonly known as African crucian carp. Tilapia has thick meat, less bone spurs and rich nutrition. It is a recognized healthy food, and its global consumption is constantly increasing. Tilapia also has the advantages of strong fecundity, fast growth, and strong disease resistance, so it has become one of the main species of freshwater aquaculture in my country. The annual farming volume of tilapia in China is as high as 1.2 million tons, mainly concentrated in coastal areas such as Guangdong, Guangxi and Fujian. [0003] With the popularization of artificial large-scale breeding, the bait for feeding tilapia is mainly compound feed, but the imbalance of...

AI Technical Summary

Problems solved by technology

[0003] With the popularization of artificial large-scale breeding, the bait for feeding tilapia is mainly compound feed, but the imbalance of nutrients in the ingredients, coupled with the deterioration of the breeding environment, tilapia is prone to fatty liver disease

The occurrence of fatty liver disease not only affects the growth rate of tilapia, increases the feed coefficient, but also reduces the disease resistance of fish, and even causes a large number of fish deaths, bringing huge losses to farmers; at the same time, tilapia with fatty liver disease High fat body ratio and low meat extraction rate affect the quality of tilapia fillets