RU2399293C2 - Method of bird feeding supplement production - Google Patents

Abstract

FIELD: food industry.

SUBSTANCE: invention relates to agriculture. The method of bird feeding supplement production is as follows: wt bran and brick powder are mixed in the following ratio (in terms of dry substances weight). %: wheat bran - 98.5 and brick powder - 1.5; this mixture is extruded at a temperature of 100°C and under a pressure of 10 MPa. The obtained extruded product is introduced in the basic diet in a quantity of 10-18%.

EFFECT: invention allows to increase nutritional value of bird diet.

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Description

The invention relates to the field of animal husbandry and can be used to obtain feed for poultry.

Known methods for producing feed for ruminants, including mixing the main diet and clinker dust (1) and (2).

In addition, there is a known method that is effective when the dry matter content of the feed is up to 3.6% of clinker dust (3).

The disadvantage of method (3) is that the period of feeding with such a feed is limited by the permissible dose of accumulation in the organs of animals of individual elements contained in clinker dust.

The task of the invention is to reduce the percentage of clinker dust in the diet while increasing the nutritional value of the feed through the use of preliminary extrusion processing.

The problem is solved due to the fact that in the method of obtaining feed, including mixing the main diet and clinker dust, according to the invention, preliminary extrusion processing of part of one of the components of the feed (filler) with clinker dust is carried out and then mixing the resulting extrudate with the main diet in an amount of 10 -eighteen%.

The method is as follows, clinker dust is mixed with bran in the following ratio of dry matter, wt.%: Wheat bran - 98.5; clinker dust - 1.5. Then the mixture is moistened and extruded (4). To obtain an extrudate, a press extruder is used with a die of d = 10 mm installed, a length of l = 60 mm and parts of the screw rotation n = 160 rpm, an exposure temperature of 100 ° C and a pressure of 10 MPa.

Having obtained the extruded product, we determined the dependence of the in vitro digestibility of the dry matter of the extrudate on the amount of clinker dust introduced.

The tests were carried out on the model of broiler chickens, selected on the basis of analogues.

As follows from the results, the digestibility of extruded wheat bran increases from 72 to 78% with the addition of KP in an amount of 0.5-1.5%.

The digestibility of dry solids of extruded bran was greatest when 1.5% of clinker dust was added. A further increase in dust input led to a reduction in digestibility to 74%.

The results of the use of feed obtained by the proposed method are shown in table 1.

Table 1 Live weight and average daily gain of a bird Group Live weight, g The average daily gain in live weight at the beginning of the experiment at the end of the experiment g % to control Control 931.0 ± 10.3 2934.0 ± 16.5 46.4 ± 2.2 one hundred 1 experienced 914.8 ± 35.0 3112.4 ± 29.6 ** 55.0 ± 1.2 * 118 2 experienced 902.4 ± 35.5 2716.4 ± 21.7 ** 45.2 ± 3.3 97 Note: * - P> 0.05; ** - P> 0.01

The control group received an extruded product without clinker dust. The first experimental group was fed an extruded product with the addition of clinker dust in an amount of 1.5% of the extrudate (the proportion of extrudate 10-18%), which was introduced during extrusion. The second experimental group received an extruded product, while clinker dust was introduced in an amount of 1.5% when mixing the feed.

As can be seen from table 1, at the end of the experiment, the average live weight of the birds of the 1st experimental group was 3112.4 g, which is more than 6.1% higher than the control level, the difference with the 2nd experimental group reached 14.6% ( P <0.01).

At the same time, the average daily gain in the 1st experimental group was 55.0 g, which is 18.5% (P <0.05) higher than that in the control. In the second experimental group, the live weight of the bird increased at a rate of 45.2 g / head / day, which amounted to only 97.4% of the control.

In addition, the use of extruded feed component with clinker dust in poultry feeding increases the bioavailability of feed chemical elements. This was confirmed by the results of calculating the conversion coefficients of individual macro- and microelements from the feed of experimental birds, presented in Table 2.

table 2 The conversion rate of the chemical elements of the feed in the production of experimental broilers,% Indicator Group I experienced II experienced control Macronutrients Ca 7.3 6.3 5.5 TO 12.9 9.9 11.3 Mg 6.6 4.0 3.3 Na 50.8 35.8 36.7 R 53.3 23.3 30.1 Vital AT 0.5 0.3 0.4 Zn 17.7 10.3 10.5 With 4,5 1.8 3.9 Cu 1.7 1.3 1.4 Fe 10,2 8.0 6.6 Li 2.9 1.4 1.7 Mn 0.3 0.2 0.2 Si 0.9 0.2 0.4 As 19.7 4.8 5.3 Se 16,4 27.1 12.8 Ni 9.6 4.7 8.3

As a result, the efficiency of the use of chemical elements by birds from feed increased in the experimental group I, in general, in all respects in comparison with the control and experimental group II.

Using the proposed method allows to increase the nutritional value of the diet by including in its composition a mixture of extruded wheat bran with clinker dust.

INFORMATION SOURCES

1. US patent No. 4126703 "System for feeding animals with dry feed mixtures containing cement dust."

2. Description of the invention to the patent of the Russian Federation No. 240164 C1 "Method for producing feed for ruminants".

3. William E. Wheeler "Cement Kiln Dust - A Potential Feed Ingredient for Livstock? Cereal foods world. - 1978. Vol.23. No. 6. P.296-299.

4. Drozdova EA Optimization of extrusion modes and evaluation of the action of feed enriched in whey on physiological characteristics and metabolism of animals. // Disser. for a job. scientist step. Candidate biologist. sciences. - Orenburg, 2007 .-- 144 p.

Claims (1)

A method of obtaining poultry feed, comprising mixing the main diet with clinker dust, characterized in that the main diet contains wheat bran, which is mixed with clinker dust in the ratio of dry matter, wt.%: Wheat bran - 98.5; clinker dust is 1.5 and is extruded at a temperature of 100 ° C and a pressure of 10 MPa, the resulting extruded product is introduced into the main diet in an amount of 10-18%.