Phagostimulant for improving palatability of fish-meal-free giant freshwater prawn feed

Abstract

The invention provides phagostimulant for improving the palatability of fish-meal-free giant freshwater prawn feed. The phagostimulant is prepared from 2,6-dibromophenol premix, arginine, glycine, alanine and silicon dioxide. The phagostimulant is added to the fish-meal-free feed, so the breeding effect of fish-meal-free giant freshwater prawn feed and the breeding effect of commercially-available giant freshwater prawn feed with normal fish meal content have no obvious differences, the cost of fish-meal-free giant freshwater prawn feed is remarkably lower than that of commercially-available feed, and therefore the breeding benefits and incomes can be effectively improved.

Description

【Technical field】 [0001] The invention relates to a food attractant for Macrobrachium rosenbergii, in particular to a food attractant for improving the palatability of feed for Macrobrachium rosenbergii without fishmeal, and belongs to the field of aquatic feed additives. 【Background technique】 [0002] Macrobrachium rosenbergii (Macrobrachium rosenbergii) is a freshwater prawn. As early as the 1960s, Southeast Asian countries have begun to breed. Macrobrachium rosenbergii grows fast and has delicious meat. The annual production of Macrobrachium rosenbergii in my country has reached 100,000 tons. At present, the amount of fishmeal in the compound feed of Macrobrachium rosenbergii is usually more than 30%. With the squall of fishmeal price, reducing the amount of fishmeal has become the most effective way to reduce the cost of breeding, but Macrobrachium rosenbergii prefers animal bait, so the feed Reducing fishmeal in the formula will often lead to a decrease in the food i...

AI Technical Summary

Problems solved by technology

At present, the amount of fishmeal in the compound feed of Macrobrachium rosenbergii is usually more than 30%. With the squall of fishmeal price, reducing the amount of fishmeal has become the most effective way to reduce the cost of breeding, but Macrobrachium rosenbergii prefers animal bait, so the feed Reducing fish meal in the formula will often lead to a decrease in food intake and growth of Macrobrachium rosenbergii, which will reduce the survival rate of the culture and affect the breeding efficiency. How to improve the food-attractiveness of Macrobrachium rosenbergii feed without fish meal is a technical problem that needs to be solved urgently in this industry

[0003] Supplementing exogenous free L-amino acids is an effective way to increase the food intake of aquatic animals, but due to the differences in the development and physiology of aquatic animals' feeding receptor systems (including olfactory receptors and taste receptors), as well as the differences in the molecular structures of different amino acids, the stimulation of smell and taste The differences in different free amino acids make the food-attracting effect of the same amino acid on different aquatic animals very different. On the other hand, the food-attracting effects of different free amino acids on the same aquatic animal and its different growth stages are also very different.

Therefore, on the technical issue of aquatic animal phagocytosis, it is difficult for people to deduce whether there are similar conclusions in different aquatic animal breeding from the research results of phagocytosis of existing aquatic animal species. For example, alanine has a strong effect on carp. food-attracting effect, but it has a repulsive effect on crucian carp belonging to the family Cyprinidae [1] , At the same time, the effect of attracting food to Penaeus vannamei is not good [2] , Glycine showed an inhibitory effect on crucian carp's feeding [1] , but the effect of attracting puffer and striped bass is very significant [3]

[0004] The Chinese patent with application number 201310146541.0 mentions that supplementing 0.04% crystalline methionine in Macrobrachium rosenbergii feed with 25% fishmeal content can improve the palatability of the feed, but there are no examples and no claims; the invention patent with application number 201010595638.6 Disclosed is a method for preparing a low-fishmeal Macrobrachium rosenbergii feed with a fishmeal content of 15-20%. Since the fishmeal content is still high and high fish oil (1.5-2%) is additionally supplemented in the formula, there is no palatability problem. Therefore, it does not involve the technical method of solving the feed palatability; the Chinese herbal medicine feed without fishmeal of Macrobrachium rosenbergii mentioned in the Chinese patent application number 201310546689.3 mentions supplementing 4-5% of the food attractant, but it does not involve the type and proportion of the food attractant; the application The Chinese patent No. 2012101652978 discloses a fishmeal-free Macrobrachium rosenbergii feed formula. A large amount of shrimp processing waste is used in the formula, and the total consumption of shrimp powder and shrimp shell powder is as high as 13-25%, but it is well known that shrimp powder The quality of shrimp and shrimp shell meal is very inconsistent and the source is not stable, so it is not an effective fishmeal-free solution for M. rosenbergii compound feed

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