CS258365B1 - A method for producing a loose feed mixture with ensiled maize and adsorbed urea and apparatus for its implementation - Google Patents

Abstract

The purpose of the solution is to produce a loose feed mixture with silaged corn cobs and adsorbed urea for feeding cattle and sheep. The stated purpose is achieved by mixing a mixture of silaged crushed corn cobs, mineral feed supplement, feed supplement for individual categories of cattle and a solution of urea in water after pre-mixing in a mixing screw in a horizontal homogenizer, in which, at increased air flow pressure, intensive adsorption of urea, which is in molecular dispersion, occurs.

Description

BACKGROUND OF THE INVENTION The present invention relates to a process for the production of a loose feed composition with silage crushed ears of corn with adsorbed urea for feeding cattle and sheep.

By crushing ears of corn, grains with okhotky, a suitable kernel feed for cattle and pigs is obtained which has about 10% more nutrients than the original amount of grain. Since the obtained feed has a relatively high moisture content, usually 40 to 50%, this feed is most often preserved by silage. Said feed has a high energy value but a relatively low content of digestible crude protein.

In order to make the best use of the nutrients in maize silage, this feed needs to be supplemented with digestible nitrogenous substances and mineral supplements.

As a source of digestible nitrogen substances in cattle and sheep, a urea solution in water can be used, which is dosed by a metering pump to a mixture of silage crushed ears of maize, mineral feed supplement and feed supplement for each cattle category, followed by dosing into a vertical homogenizer. in which the urea, which is found in the molecular dispersion on the surface of the loose feed, undergoes intensive adsorption of urea during the swirling movement of the bulk feed particles and the increased air flow pressure. The resulting mixture is conveyed from the vertical homogenizer by a discharge auger to a removal conveyor belt.

Using the process for producing a loose feed mixture with silage maize and adsorbed urea according to the invention, a kernel feed for cattle and sheep is produced which is fed due to the increased moisture content within three days of its production. The urea in this feed is contained in a molecular dispersion adsorbed to the loose portion of the feed, resulting in its gradual desorption in the rumen of the cattle, resulting in its better use as a source of nitrogenous substances and reducing the risk of ammonia intoxication at rapid decomposition of urea present in the rumen fluid solution. The addition of a feed supplement for each category of bovine animal both balances the nutrients in the finished product needed for the respective performance of each animal category and increases the dry matter in the finished product, which can be dosed by existing bulk compounding equipment.

In the accompanying drawing, a diagram of a device for preparing a loose feed mixture with silage maize and adsorbed urea according to the invention is shown.

Simultaneously oiled crushed ears of corn are discharged into the hopper of the mixing auger by a discharge auger from the reservoir χ, the mineral feed supplement from the dispenser 2 and the feed supplement from the reservoir. From the mixing screw jj the mixture is fed into a vertical homogenizer J, in which the blades on the vertical shaft cause swirling of the bulk feed particles and an increased flow pressure, resulting in intense adsorption of urea in the molecular dispersion on the surface of the bulk feed. from the vertical homogenizer 2 the mixture is discharged by a discharge auger 8 onto a strip conveyor 9.

Example 1

In the manufacture of the bulk feed mixture with silage maize and adsorbed urea, 60 wt. silage crushed ears of maize with a dry matter content of 55%, a 2% solution by weight. urea in 6 wt. water, feed salt 0.6 wt.%, mineral feed supplement FEM 3 1.4 wt. and feed mixture DOB 30 wt. The obtained feed mixture with a dry matter content of 63% corresponds to an energy value of 79% by weight. official feed mixtures for DOB dairy cows.

Example 2

A mixture of 60 wt.% Is simultaneously metered into the hopper of the mixing screw. silage crushed ears of maize, 1,4% wt. mineral feed supplement FEM 3, 0.6 wt. feed salts and 30 8 wt. feed mixture DOB and spray nozzle solution of 2% by weight. urea in 6 wt. water. From the mixing screw, the mixture is dosed into a vertical homogenizer 7, from which a conveyor belt 8 is discharged by a discharge screw for removal.

During feeding of the feed mixture there was a gradual desorption of urea in the rumen of dairy cows so that after one-hour treatment in rumen 65% was desorbed and after two-hour treatment 87% of urea.

The process for the production of a loose feed composition according to the invention consists in providing a complete nuclear feed which remains free-flowing even with its increased moisture content.

Claims (2)

SUBJECT OF THE INVENTION A process for the production of a loose feed mixture with silage maize and adsorbed urea, characterized in that from 85 to 95% by weight of a continuous flow is used. a mixture of silage crushed ears of maize, a mineral feed supplement and a feed supplement for each category of cattle in a swirling motion, adding 15 to 5 wt. solution of urea in water. 2. Apparatus according to claim 1, characterized in that a discharge auger of the silage crate (1) of silage crushed ears of corn, a mineral feed suppler (2) and a feed additive container (3) is connected to the hopper of the mixing auger (6). the urea-water tank (4) is connected via a metering pump (5) to the spraying nozzle of a mixing screw (6) whose hopper is connected to the inlet upper part of the vertical homogenizer (7), while its lower part is provided with a discharge screw ( 8), its hopper is connected to a removal conveyor belt (9).