RU2802758C1 - Granular feed for trout fry with protein raw materials of microbial synthesis - Google Patents

Abstract

FIELD: agriculture.

SUBSTANCE: granular feed includes wheat, soybean meal, corn gluten, meat meal, fish meal, blood meal, fish oil, sunflower oil, gaprin. All components are used in a certain ratio.

EFFECT: increase in live weight and body condition ratio.

1 cl, 1 ex

Description

An invention is known in which they were grown on mixed feed with 50% haprin, and digestibility was determined [Abramova, Afanasyeva, 1989]. It has been shown to have 83% protein digestibility, 80-93% amino acid availability, 58% lipid availability, 89% nucleic acid availability, and 61% total nutrient availability. According to the conclusion of GosNIORH [Ostroumova et al., 1991], gaprin turned out to be a more nutritious feed component than paprin for carp, salmon, whitefish, and Far Eastern salmon. It is recommended to include it in starter feeds (to replace paprin), as well as in production feeds for fingerlings (up to 30%). When growing carp in warm-water farms in mixed feed for yearlings weighing from 50 to 200 g, its optimal amount can be 20%, for fish weighing from 200 g to commercial weight - 13%. Gaprin can be added to feed for juvenile trout in an amount of 10-20%. (http://www.aquaristics.ru/pond/forage/mikrobnaya-biomassa-gaprin-v-pitanii-dlya-ryb).

The known invention relates to livestock farming, in particular to a protein feed additive for farm animals, poultry and farmed fish. The method is characterized by the fact that it contains a strain of methane-oxidizing bacteria Methylococcus capsulatus GBS-15 VKPM V-12549 and a strain of heterotrophic bacteria Cupriavidus gilardii GBS-15-1 at a certain ratio. In this case, the additive may additionally contain a strain of heterotrophic bacteria Stenotrophomonas acidaminiphila GBS-15-2, as well as a strain of heterotrophic bacteria Klebsiella pneumonia 1-17. The use of the invention makes it possible to obtain a product with a high protein content.

The known invention is intended for use in livestock farming, poultry farming and fish farming, in particular, it relates to bioadditives for feed when growing farm animals and birds, fish in artificial reservoirs, to increase productivity and natural resistance.

Studies of the nutritional properties of the protein feed additive were carried out on animals for which the product was intended: pigs, calves, sheep, poultry, fish. Animals were fed according to accepted standards. The control diets included soybean meal, fish meal, and gaprin as a source of protein. The amount of the claimed protein feed additive and the control additive included up to 20% of the daily norm of digestible protein in the diet, depending on the age of animals, birds and fish.

Feeding the diet with a protein feed additive containing the proposed association of strains helps to increase live weight due to the growth of muscle tissue. The quality of meat improves by reducing the fat content in muscle tissue.

The known invention makes it possible to increase the productivity of animals, poultry and fish, their survival rate, the environmental safety of meat, and to obtain meat with functional properties (RF patent No. RU 2717991 C1, published 03/27/2020).

The prototype chosen was the RGM diet - 8 V for juvenile trout weighing more than 50 g, diet (in%): fish meal - 19.6, meat and bone meal - 2, blood meal - 2, wheat meal - 7.6, algae meal - 1 , skimmed milk powder - 2, sunflower meal - 25, soybean meal - 26, hydrolytic yeast - 8, phosphatides - 5.8, PF premix - 1 (https://msd.com.ua/fish-farming/kormforel/) The disadvantages of the known formulations include the multicomponent nature, high cost and instability of feed quality due to the introduction of a variety of animal products and meals into the formulation.

The goal is import substitution and expansion of the range of domestic food products for growing salmon species.

The technical result is an increase in live weight, absolute, average daily gain, absolute increase in length, width, body height, as well as the preservation of fish species.

The technical result is achieved by granulated feed for juvenile trout with protein raw materials of microbial synthesis, consisting of components of animal origin, fish meal, blood meal, and fish oil; ingredients of plant origin wheat, soybean meal, characterized in that gaprin is introduced as a product of microbial origin, additionally contains meat flour, sunflower oil and corn gluten, with the following ratio of components per 100 g of the finished product, g:

Wheat 12 Soybean meal 20 Corn gluten 5 Meat flour 10 Fish meal 12.5 Blood meal 10 Fish oil 10 Sunflower oil 8 Gaprin 12.5

daily feed supply was calculated monthly according to changes in live weight.

Gaprin is a biomass of methane-oxidizing bacteria Mithylococcus capsulatus. These bacteria are characterized by a very high rate of reproduction and protein synthesis, which made their use attractive for the production of feed protein.

A distinctive feature of the amino acid composition of gaprin is the high content of aromatic acids - phenylalanine and tyrosine, as well as methionine. This is one of the very significant advantages of Gaprin, because... The lack of these amino acids is constantly felt in feed for many fish species.

An example of a specific implementation.

To prepare granulated feed for juvenile trout with protein raw materials of microbial synthesis - gaprin per 1000 g, wheat - 120 g, soybean meal - 200 g, corn gluten - 50 g, meat flour - 100 g, fish meal - 125 g, blood meal - were used. 100 g, fish oil - 100 g, sunflower oil - 80 g, haprin - 125 g.

The process of producing compound feed for aquaculture facilities with partial replacement of fishmeal with raw materials of microbial synthesis (gaprin) included the following stages: extrusion of raw materials; grinding of extruded raw materials; mixing diet components; granulation; conditioning; vacuum deposition of fat; cooling).

Experimental work was carried out in the conditions of the Center for Breeding Valuable Species of Sturgeon of the Volgograd State Agrarian University. The 1st control and 3 experimental groups of juvenile trout were used as research objects. The initial weight of the experimental individuals was 55 g. The duration of the experiment was 60 days.

The dynamics of live weight of juvenile trout was determined by the results of weighings once a month, on the basis of which absolute and average daily growth, as well as fatness coefficients, were calculated.

Analysis and generalization of experimental materials obtained during studies assessing the effectiveness of using domestically produced protein components in trout feeds allowed us to draw the following practical and theoretical conclusions.

Based on the results of the research experiment, a positive dynamics of live weight was recorded among representatives of the 2nd, 3rd and 4th experimental groups in relation to the 1st control group by 7.01, 14.36 and 7.61%, respectively.

As a result of the experiment, individuals of the 2nd, 3rd and 4th experimental groups prevailed over the results of absolute increase in live weight over their peers from the 1st control group by 13.49, 26.21 and 15.15%, respectively.

Representatives of the 3rd experimental group also had the best indicators of relative growth; they exceeded their analogues from the control by 32.30, as well as the 2nd and 4th experimental groups by 17.75 and 20.57, respectively.

In terms of absolute increase in body length, no significant differences were recorded between the 1st control and experimental groups. Thus, the first control group was inferior to peers from experimental groups 2, 3 and 4 on this indicator in the second control period by 6.71, 9.54, 7.81%, respectively.

The fatness coefficient of representatives of the 3rd experimental group was higher than that of representatives of the 1st control group, as well as the 2nd and 4th experimental groups.

Thus, the declared product feed for juvenile trout provides an increase in live weight, absolute, relative growth, absolute increase in body length, and fatness coefficient.

Claims (3)

Granulated feed for juvenile trout with protein raw materials of microbial synthesis, consisting of components of animal origin, fish meal, blood meal, fish oil; ingredients of plant origin wheat, soybean meal, characterized in that gaprin is introduced as a product of microbial origin, additionally contains meat flour, sunflower oil and corn gluten, with the following ratio of components per 100 g of the finished product, g: Wheat 12 Soybean meal 20 Corn gluten 5 Meat flour 10 Fish meal 12.5 Blood meal 10 Fish oil 10 Sunflower oil 8 Gaprin 12.5, daily feed supply was calculated monthly according to changes in live weight.