Grass carp compound feed

A compound feed and grass carp technology, applied in animal feed, animal feed, application, etc., can solve the problems of grass carp mesenteric fat deposition, low protein conversion efficiency, high feed coefficient, etc., to facilitate large-scale promotion, improve quality and be edible ratio, the effect of reducing ammonia nitrogen emissions

Inactive Publication Date: 2010-08-25
SUN YAT SEN UNIV
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AI Technical Summary

Problems solved by technology

The purpose of the present invention is to provide a method that can improve the growth and protein deposition rate of grass carp and reduce the feed coefficient and liver system number according to the

Method used

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  • Grass carp compound feed
  • Grass carp compound feed
  • Grass carp compound feed

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

Example 1

Formula 1 feed (31% by mass crude protein, 15% by mass starch) was prepared according to formula 1 shown in Table 1, and 4.5g grass carp was fed for 56 days. The weight gain rate (WG%) was 941.53, the feed coefficient was 1.07, and the specific growth rate (SGR, % / Day) 4.18, liver system number (HSI%) 2.36, intestinal fat coefficient (VSI%) 2.18, compared with the feed group (27% by mass crude protein, 25% by mass starch), the weight gain rate and specific growth rate are significant Increased, the feed coefficient, liver system number, intestinal fat coefficient and whole fish fat were significantly reduced. Compared with the feed group fed (31% by mass crude protein, 25% by mass starch), the weight gain rate, specific growth rate and feed coefficient were not significantly different, but the liver system number, intestinal fat coefficient and whole fish fat were significantly reduced.

Example Embodiment

Example 2

According to the formula 2 shown in Table 1, the feed was prepared (27% by mass crude protein, 1.157% by mass lysine, 0.3901% by mass methionine), 9.8g of grass carp was raised for 56 days, the weight gain rate (WG%) was 220.8, and the feed coefficient was 1.7. Protein deposition rate (%) 30.88, liver system number (HSI%) 1.63, intestinal fat coefficient (VSI%) 1.08, and feeding group (27 mass% crude protein, lysine 1.0485 mass%, methionine 0.3865 mass%) feed group In comparison, the weight gain rate was significantly increased by 11.4%, the feed coefficient was significantly reduced by 10.58%, the protein and protein deposition rate was increased by 8.27%, the visceral body ratio was decreased by 6.90%, the liver-to-body ratio was significantly decreased by 13.50%, and the liposome ratio was significantly decreased by 17.59%. Reduce the fat of whole fish and increase the content of muscle protein, and improve the quality of fish.

Example Embodiment

Example 3

According to formula 3 shown in Table 1, a feed was prepared (crude protein 28% by mass, lysine 1.55% by mass, and lysine hydrochloride 0.17%). After feeding 8.1g grass carp for 56 days, the weight gain rate (WG%) was 274.34. The feed coefficient is 1.51, and the specific growth rate (SGR, % / day) is 2.36. Compared with the feed group fed (crude protein 28% by mass, lysine 1.55% by mass, and lysine sulfate 0.25%), the weight gain rate is improved 32%, the specific growth rate increased by 0.17, but the difference was not significant. Compared with the feed group fed (crude protein 28% by mass, lysine 1.42% by mass), the weight gain rate, specific growth rate and feed coefficient were significantly improved. Compared with the feed group fed (crude protein 28% by mass, lysine 1.65% by mass, and lysine hydrochloride 0.3%), there was no significant difference in weight gain rate, specific growth rate and feed coefficient. From the perspective of growth, the effect of add...

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Abstract

The invention discloses a grass carp compound feed which comprises the following nutrient components by mass percentage: 22-32 crude protein, 3-6 crude fat, 21-28 nitrogen free extract, 15-22 starch, 7-10 ash content, 6-10 water, 1.18-1.34 total phosphorus, 1.42-1.55 lysine and 5-8 crude fiber. The grass carp compound feed effectively solves the problems that in the existing grass carp culturing process, the protein conversion efficiency is low, the feed coefficient is high and a great deal of mesentery fat is accumulated, and improves the grass carp quality and edible proportion.

Description

technical field The invention relates to the field of grass carp feed, in particular to a compound feed capable of improving the growth and protein deposition rate of grass carp and reducing feed coefficient, liver system coefficient and whole fish fat. Background technique Grass carp (Ctenopharyngodon idella) is widely distributed in rivers in the northeast, east, central and southern regions of China. Since the successful hatching in 1958 by artificial oxytocin insemination, grass carp has been introduced to various parts of the world in recent decades, such as Japan, Southeast Asia, Eastern Europe, and the United States, and has become a highly valued freshwater cultured fish. Grass carp is the second most productive fish in the world, and it is the main freshwater aquaculture fish in my country. In 2006, the output reached 3.96 million tons, accounting for 21% of the total freshwater fish and shrimp aquaculture output (China Fisheries Yearbook, 2006). At present, the u...

Claims

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Application Information

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IPC IPC(8): A23K1/18A23K1/175
Inventor 刘永坚田丽霞阳会军甘炼梁键钧
Owner SUN YAT SEN UNIV
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