CN102100319A - Compound feed used for culturing hemifusus tuba gmelin - Google Patents

Abstract

The invention discloses a compound feed for cultivating snails, which consists of а-starch, peeled soybean meal, peanut cake, domestic red fish meal, white fish meal, dextrin, fish oil, soybean oil, gelatin, compound vitamins and compound minerals and food attractant as raw materials, including mixing, stirring and granulating the pellet feed, the nutritional composition of the pellet feed is reasonable, the growth of the tube angle snail is better, the growth of the tube angle snail is good, and the pellet feed has a good effect on the tube angle snail. The feeding effect is better, the shape retention time is longer, and the palatability is also better. It is suitable for feeding on snails. The survival rate of this compound feed alone is over 90%, so this pellet feed can replace razor clams, blue clams, variegated clams and assorted clams. Natural bait such as fish reduces the feed cost of cultured snails and improves the economic efficiency of cultured snails.

Description

A kind of compound feed for cultivating pipe angle snails

technical field

The invention relates to a compound feed, in particular to a compound feed for cultivating snails.

Background technique

Hemifusus tuba , belonging to Gastropoda and Galeodidae, lives in the soft mud and sandy seabed at 11-40m offshore in the subtidal zone. Mainly distributed in the southeast coast of my country and the Sea of Japan. Its meat is plump, fresh and tender, has a unique taste, and is rich in nutrients such as protein and unsaturated fatty acids. It is a marine treasure with a certain health care effect, and is very popular in domestic and foreign markets. However, in recent years, due to unreasonable resource utilization, the number of wild snails has been decreasing day by day, and the market price is high, and the supply is in short supply. Snails are carnivorous molluscs, and they like to eat bivalves under natural conditions, especially those with thin shells and no filaments, such as clams, blue clams, and variegated clams. At present, the domestic and foreign research reports on snails mainly involve the ecology, breeding habits and artificial breeding of snails, and there is no report on the compound feed of snails. Therefore, most of the large-scale artificial breeding currently uses natural fresh and frozen bait, such as variegated clams and miscellaneous fish, so it is not only easy to pollute the water quality, but also the cost of breeding is high, resulting in the economic benefits of snail culture and the income of the farmers. reduce.

Contents of the invention

The technical problem to be solved by the present invention is to provide a compound feed for cultivating snails. The compound feed has good food-attracting effect, reasonable nutritional mix, long shape retention time in water, good palatability, and can replace natural bait , thereby reducing the feed cost of cultivating snails and improving the economic efficiency of culturing snails.

The technical solution adopted by the present invention to solve the above-mentioned technical problems is: a compound feed for cultivating snails, a granular feed made from the following raw material components through mixing, stirring and granulation: а-starch 8～ 12 kg, 7-8 kg of peeled soybean meal, 1.5-2.5 kg of peanut cake, 25-32 kg of domestic red fish meal, 26-32 kg of white fish meal, 4.5-6 kg of dextrin, 4-5 kg of fish oil, 4-5 kg of soybean oil kilograms, 6-8 kilograms of gelatin, 0.6-1.5 kilograms of multivitamins, 0.3-0.8 kilograms of compound minerals, 40-60 liters of food attractants, the food attractants are soaked in water of the same weight for 40-90 minutes, Crumble again, filter the leachate obtained with 120 mesh gauze. Using the food attractant of razor clam meat extract has a better effect on inducing consumption of snails; the combination of gelatin, а-starch and dextrin can not only keep the shape of the pellet feed for a long time, but also have better palatability, which is beneficial to Snails feed.

The raw material components are а-starch 10.0 kg, peeled soybean meal 7.5 kg, peanut cake 2.0 kg, domestic red fish meal 29.0 kg, white fish meal 29.2 kg, dextrin 5.3 kg, fish oil 4.5 kg, soybean oil 4.0 kg, gelatin 7.0 kg, compound 1.0 kg of vitamins, 0.5 kg of compound minerals, and 50 liters of food attractants. After the raw material components are made into rod-shaped hard pellet feed with a water content of 6-10%, the protein content is about 40%, and the fat content is about 13%. Feeding the compound feed with this formula can improve the growth of snails. Better, the survival rate is also higher.

Each kilogram of the multivitamin (commercially available) contains no less than the following active ingredients: vitamin A of 2.5 million IU, vitamin D of 500,000 IU, vitamin E of 25,000 IU, vitamin K3 of 5g, vitamin K3 of 10g Vitamin B1, 9g of vitamin B2, 8g of vitamin B2, 20mg of vitamin B12, 37g of niacin, 20g of D-pantothenic acid, 2g of folic acid.

Each kilogram of composite minerals (commercially available) contains not less than the following active ingredients: 2g of iron, 0.25g of copper, 1.6g of manganese, and 3g of zinc.

The pellet feed is rod-shaped hard pellet feed, and the moisture content of the rod-shaped hard pellet feed is 6-10%. The hard pellet feed has a longer shape retention time and a higher feed utilization rate. Of course, it can also be made into soft pellet feed.

The rod-shaped hard pellet feed has a diameter of 1.5-2.5mm and a length of 8-15mm; the pellet feed with the diameter and length is suitable for feeding by picornus snails, and the feed utilization rate is high.

The preparation method of the compound feed is the preparation of conventional pellet feed, weighing in proportion, mixing, agitating with a mixer, granulating with a granulator and drying, etc., which will not be described in detail here.

The daily feeding amount of the compound feed is 3 to 9% of the weight of the tube snail, and it is advisable to feed it 1 to 3 times a day.

Compared with the prior art, the present invention has the advantage of being a compound feed for cultivating snails, with а-starch, peeled soybean meal, peanut cake, domestic red fish meal, white fish meal, dextrin, fish oil, soybean oil, Gelatin, compound vitamins, compound minerals and food attractants are used as raw materials, and the pellet feed is prepared by mixing, stirring and granulating. The nutrient composition of the pellet feed is reasonable, and the growth of the snail is better, which is conducive to the growth of the snail. The pellet feed has a good effect on attracting snails, has a long shape retention time, and has good palatability. Natural baits such as razor clams, blue clams, variegated clams and miscellaneous fish have reduced the feed cost of culturing snails and improved the economic efficiency of culturing snails.

Detailed ways

Below in conjunction with embodiment the present invention is described in further detail.

Example 1

A compound feed for cultivating snails, weighing 10.0 kg of а-starch, 7.5 kg of peeled soybean meal, 2.0 kg of peanut cake, 29.0 kg of domestic red fish meal, 29.2 kg of white fish meal, 5.3 kg of dextrin, and 4.5 kg of fish oil , 4.0 kg of soybean oil, 7.0 kg of gelatin, 1.0 kg of multivitamins (commercially available), 0.5 kg of multivitamins (commercially available), uniformly mixed as the base material, of which 1.0 kg of multivitamins contains not less than 2.5 million IU of vitamin A , not less than 500,000 IU of vitamin D, not less than 25,000 IU of vitamin E, not less than 5g of vitamin K3, not less than 10g of vitamin B1, not less than 9g of vitamin B2, not less than 8 g Vitamin B6, not less than 20mg of vitamin B12, not less than 37g of niacin, not less than 20g of D-pantothenic acid, 2g of folic acid; 1.0 kg of compound minerals contains not less than 2g of iron, not less than 0.25g of copper, not less than 1.6g of manganese, not less than 3g of zinc; take 50 kg of razor clam meat and immerse it in 50 liters of water, soak for 1 hour, then crush it, and filter the leachate with 120 mesh gauze to get the razor clam meat The leachate is the food attractant. Mix 50 liters of the food attractant and appropriate amount of water with the above-mentioned base material, stir it into a billet that is easy to granulate, and then use a granulator to granulate the billet into diameters of 1.5-2.5 mm and lengths of 8 mm. ~15mm pellets, dried or air-dried into hard pellet feed with a moisture content of 6-10%.

Example 2

It is basically the same as Example 1, except that 8 kg of а-starch, 8 kg of peeled soybean meal, 1.5 kg of peanut cake, 25 kg of domestic red fish meal, 32 kg of white fish meal, 4.5 kg of dextrin, 4 kg of fish oil, and 5 kg of soybean oil kg, 8 kg of gelatin, 0.6 kg of multivitamins, 0.8 kg of multiminerals, 40 liters of food attractant, and the immersion time of razor clam meat during the preparation of food attractant was 90 minutes.

Example 3

It is basically the same as Example 1, except that 12 kg of а-starch, 7 kg of peeled soybean meal, 2.5 kg of peanut cake, 32 kg of domestic red fish meal, 26 kg of white fish meal, 6 kg of dextrin, 5 kg of fish oil, and 4 kg of soybean oil 6 kilograms of gelatin, 1.5 kilograms of multivitamins, 0.3 kilograms of multivitamins, 60 liters of food attractants, and the soaking time of razor clam meat was 40 minutes during the preparation of food attractants, and they were not dried or dried to become soft pellet feed.

Test case

Test group: Take snails with a shell height of 2.25±0.25cm and a body weight of 0.65±0.25g, and randomly distribute them. Each test group has 5 parallel experiments, each parallel test is 20 snails, and there are 4 test groups in total ( Test group 1, test group 2, test group 3, test group 4), the total weight of each group is basically within ±0.25g;

Test basin: inner diameter 16cm, height 8cm, sand in the basin, sand thickness 1.5-2cm, water depth 5-6cm, 20 animals in each basin;

Test conditions: water temperature 28.7±4.1℃, salinity 24.3±1.5, cool environment, continuous oxygenation for 24 hours, water change once in the morning and afternoon;

Feed and feed: the daily feeding amount (measured by the moisture content of 6-10%) is 6% of the total weight of the tube snail, which is divided into two times in the morning and evening, and the 5 pots of the test group 1 are fed with the compound feed of Example 1 Feeding, 5 pots of test group 2 were fed with the compound feed of Example 2, 5 pots of test group 3 were fed with the compound feed of Example 3, and 5 pots of test group 4 were fed with small miscellaneous fish ;

Test results: After 15 days of feeding, count and weigh the number of live snails. In test group 1, 96 survived, with an average weight gain of 10.21%; in test group 2, 93 survived, with an average weight gain of 7.62%; in test group 3 A total of 91 survived, with an average weight gain of 6.64%; a total of 96 survived in test group 4, with an average weight gain of 9.38%.

In the test, the water quality of the test group 4 was worse than that of the test groups 1-3, indicating that the compound feed was used, and the water quality was less polluted.

Claims (5)

1. A compound feed for cultivating snails, characterized in that the pellet feed is made by mixing, stirring and granulating the following raw material components: 8-12 kg of а-starch, 7-12 kg of peeled soybean meal 8 kg, peanut cake 1.5-2.5 kg, domestic red fish meal 25-32 kg, white fish meal 26-32 kg, dextrin 4.5-6 kg, fish oil 4-5 kg, soybean oil 4-5 kg, gelatin 6-8 kg, 0.6-1.5 kilograms of compound vitamins, 0.3-0.8 kilograms of compound minerals, and 40-60 liters of food-inducing agents. The food-inducing agents are soaked in water of the same weight for 40-90 minutes, then crushed, and then crushed with 120-mesh gauze. The resulting leachate was filtered. 2. A kind of compound feed for cultivating snails as claimed in claim 1, characterized in that said raw material components are 10.0 kg of α-starch, 7.5 kg of peeled soybean meal, 2.0 kg of peanut cake, domestic red fish meal 29.0 kg, 29.2 kg of white fish meal, 5.3 kg of dextrin, 4.5 kg of fish oil, 4.0 kg of soybean oil, 7.0 kg of gelatin, 1.0 kg of multivitamins, 0.5 kg of multi minerals, and 50 liters of food attractants. 3. A kind of compound feed for cultivating snails as claimed in claim 1, characterized in that every kilogram of said multivitamins contains no less than the active ingredients of the following quantities: 2.5 million IU of vitamin A, 50 10,000 IU of vitamin D, 25,000 IU of vitamin E, 5g of vitamin K3, 10g of vitamin B1, 9g of vitamin B2, 8g of vitamin B2, 20mg of vitamin B12, 37g of niacin, 20g of D-pantothenic acid, 2g of folic acid. 4 . A compound feed for cultivating snails as claimed in claim 1 , wherein the pellet feed is rod-shaped hard pellet feed, and the moisture content of the rod-shaped hard pellet feed is 6-10%. 5 . A compound feed for cultivating snails as claimed in claim 4 , characterized in that the rod-shaped hard pellet feed has a diameter of 1.5 to 2.5 mm and a length of 8 to 15 mm. 6 .