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Tilapia feed formula

A feed formula, tilapia technology, applied in animal feed, animal feed, climate change adaptation and other directions, can solve the problem of increased costs for feed manufacturers and breeding producers, restricting the development and growth of the tilapia industry, and low feed protein conversion rate. and other problems to achieve the effect of improving feed utilization, optimizing feed efficiency and reducing protein content

Inactive Publication Date: 2009-07-08
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As the prices of global energy and food resources have continued to soar in recent years, the prices of feed protein raw materials have also continued to rise, resulting in increasing costs and declining profits for feed manufacturers and farmers, which has largely restricted the production of tilapia. The development and growth of the industry
Moreover, the content of protein raw materials in the feed is too high, which causes low feed protein conversion rate and waste of resources, and also causes environmental pollution problems such as high ammonia nitrogen content in the aquaculture water.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Embodiment 1: Feed (0% soybean meal, 32.7% flour) was formulated with Formula 1 shown in Table 1, and about 5.2 g of Gifu tilapia were raised for 64 days. After the experiment finished, the average weight of this group of tilapia was 46.3g, weight gain rate (WG) 815.1%, specific growth rate (SGR, %d -1 ) 3.69, all parameters were compared with high-protein low-starch feed (34% CP (crude protein content) group (24% soybean meal, 9.9% flour) and 32% CP group (16% soybean meal, 17.9% flour )) There is no significant difference. The protein efficiency of formula 1 was 2.36 slightly higher than 2.28 of 34% CP group and 2.34 of 32% CP group, but there was no significant difference.

Embodiment 2

[0018] Embodiment 2: Feed (8% soybean meal, 25.2% flour) was formulated with Formula 2 shown in Table 1, and about 5.2 g of Gifu tilapia were raised for 64 days. After the experiment finished, the average weight of this group of tilapias was 54.7g, weight gain (WG) 951.6%, specific growth rate (SGR, %d -1 ) 3.92, feed coefficient is 1.34, each parameter has no significant difference with 34% CP group (24% soybean meal, 9.5% flour); and the protein efficiency of formula 2 is slightly higher than 34% CP group, but no significant difference sexual difference. All parameters of formula 2 were slightly better than those of the 32% CP group (16% soybean meal, 17.1% flour), but there was no significant difference.

Embodiment 3

[0019] Embodiment 3: Prepare feed (8% fish meal, 15% soybean meal, 27.1% corn meal) with Formula 3 shown in Table 1, and raise about 9.2 g of Oza tilapia for 64 days. After the experiment finished, the average weight of this group of tilapia was 63.8g, weight gain rate (WG) 589.5%, specific growth rate (SGR, %d -1 ) 3.45, the feed coefficient is 1.28, and all parameters are significantly better than the low-starch feed (8% fish meal, 15% soybean meal, 12% corn starch) of equal protein and fat.

[0020] Specific growth rate SGR (%d -1 )=100×(1n final average weight-ln initial average weight) / experimental days

[0021] Weight gain rate WG(%)=(final average weight-initial average weight)×100 / initial average weight

[0022] Survival rate SR (%) = number of remaining fish tails at the end of the experiment × 100 / number of fish tails at the beginning of the experiment

[0023] Feed coefficient (FCR) = feed amount / (final body weight-initial body weight)

[0024] Protein efficienc...

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Abstract

The invention relates to a feed formulation for tilapia. The feed comprises the following nutrition components by weight percentage: crude protein, 25%-30%; crude fat, 3%-5%; ash content, 7%-9%; carbohydrate, 40%-55%; and moisture content, 9%-11%. The feed formulation of the invention increases the content of carbohydrate and reduces the content of protein, thus having the function of saving protein raw materials and reducing feed cost and pollution. Long-term raising experiments indicate that the feed produced by adopting the feed formulation of the invention has good palatability, and better growth effect is achieved in breeding of the tilapia. Compared with the feed of high protein contents, the low protein and high carbohydrate type feed for the tilapia can achieve considerably good growth effect and better feed efficiency; compared with feed with the same level of protein and fat, the feed for tilapia of the invention achieves better growth effect, higher protein transformation efficiency and lower ammonian discharge amount.

Description

technical field [0001] The invention relates to a high-carbohydrate tilapia feed formula. Background technique [0002] Tilapia is widely distributed in the brackish waters of the African continent and the Atlantic coast of the Middle East, and is the main economic fish in freshwater and brackish waters in Africa. Due to the advantages of fast growth, short breeding cycle, wide feeding habits, low bait requirements, few diseases, strong adaptability to the environment, and strong group reproduction, it is a good breeding object and has been widely introduced by other countries and regions. At present, my country has become the largest tilapia farming and exporting country in the world; according to statistics, my country's tilapia production was 1.13 million tons in 2007, and the world's tilapia production was about 2.6 million tons in the same year. Tilapia has become one of the main freshwater aquaculture species in my country (especially in the south). It is one of the m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23K1/18A23K1/00A23K10/22A23K10/37A23K10/38A23K20/142A23K20/147A23K20/158A23K20/163A23K20/174A23K20/20A23K50/80
CPCY02A40/818Y02P60/87
Inventor 刘永坚田丽霞阳会军高文邓世喜金胜洁
Owner SUN YAT SEN UNIV
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