Expanded pellet feed for trionyx sinensis and preparation method thereof

Abstract

The invention discloses an expanded pellet feed for the trionyx sinensis. The curing degree of the expanded pellet feed is 100 percent. The expanded pellet feed is prepared from domestic white fish meal, America white fish meal, imported eel-grade red fish meat, flour, cassava pieces, soy beans, non-transgenic soybean meal, fermented soybean meal, pregelatinization starch, milk powders, mineral premix, vitamin premix, monocalcium phosphate, calcium propionate and phosphatide oil by using a twin-screw extruding fully-curing expansion machine to firstly carry out quenching and tempering on the materials for 160 to 200 seconds under the conditions that a vapour pressure is between 0.4 and 0.5MPa, a humidity is between 19 and 23 percent, and a temperature is between 85 and 90 DEG C, and then carry out curing on obtained product under the conditions that a curing temperature is 180 DEG C, a cavity pressure is between 22 and 28atm and a curing time is between 25 and 30 seconds. Each kilogram of mineral premix comprises Mg, Na, K, Fe, Cu, Mn, Zn, Se, Co and I. The expanded pellet feed for the trionyx sinensis has the advantages of reasonable configuration of various elements required by nutrition and growth, complete curing, resistance to cause damage to all nutritional factors, low cost, higher stability in water and higher digestibility.

Description

technical field [0001] The invention relates to soft-shelled soft-shelled turtle feed, in particular to an extruded granular feed for soft-shelled soft-shelled turtle and a preparation method thereof. Background technique [0002] Chinese soft-shelled turtle (turtle) has higher requirements for protein and fat, and needs more animal protein sources. The global fishmeal production has declined and the price has risen rapidly, making the cost of soft-shelled turtle breeding higher and higher. Conventional soft-shelled turtle feed is a compound powder, as the announcement number is CN100534319, and the announcement date is September 2, 2009. The title is a patent for invention of a pollution-free soft-shelled turtle compound feed, which discloses fish meal comprising 50% to 70%. , 15% to 30% starch, and an appropriate amount of yeast powder, milk powder, egg yolk powder, gluten powder, natural stone powder or trace elements composed of calcium dihydrogen phosphate, compound vit...

AI Technical Summary

Problems solved by technology

Conventional soft-shelled turtle feed is a compound powder, as the announcement number is CN100534319, and the announcement date is September 2, 2009. The title is a patent for invention of a pollution-free soft-shelled turtle compound feed, which discloses fish meal comprising 50% to 70%. , 15% to 30% starch, and an appropriate amount of yeast powder, milk powder, egg yolk powder, gluten powder, natural stone powder or trace elements composed of calcium dihydrogen phosphate, compound vitamins, Biebao and bile chloride Alkaline and other raw materials are mixed together. The patent is characterized by Biebao, but the amount of fishmeal is relatively large, the cost is high, the nutritional equipment needs to be improved, and the anti-nutritional factors are not destroyed, especially the lack of various trace elements needed for growth. It is not easy to store and feed, and the nutrients are lost during feeding, and the digestibility is low

And the publication number is CN1923033, and the publication date is March 7, 2007, and the name is called a kind of invention patent application of the production technology of soft-shelled soft-shelled soft-shelled turtle, then discloses and comprises the fishmeal of 41%~75%, 18%~ 22% of flour, 2% to 16% of beans, and appropriate amount of yeast powder, gluten or other binders, trace elements, vitamins and probiotics, etc. The wet puffing agent is prepared at a temperature of 80-130°C. This patent application is characterized by wet puffing at 80-130°C. However, the amount of fishmeal is also relatively large, and the cost is high. The trace elements have not been studied, and the destruction of anti-nutritional factors is not perfect. Although the preservation, feeding and digestibility have been improved, the degree of ripening is not enough, and the puffing effect is not ideal.