SU1724137A1 - Method of sperm production from bulls - Google Patents

Abstract

Use: livestock, artificial insemination of animals. Summary of the Invention: After sperm production, the bulls produce twice a week with feed lithium carbonate and Glauber salt in a 1: 1 ratio at a dose of 2 g per head. 2 tab.

Description

The invention relates to the field of animal husbandry. There is a known method for producing sperm products from manufacturing bulls, including mounting on a machine tool or a front animal (ox, bull) and using an artificial vagina to collect sperm in a special arena.

However, this method does not fully ensure the effective use of bulls, the realization of the existing possibilities of the reproductive system of animals. From a significant part of the bulls receive only 7-10 thousand sperm doses per year. With prolonged use of the known method in some animals, even extinction of sexual reflexes, a decrease in sperm production, and a deterioration in its quality are observed.

Closest to the invention is a method for stimulating the reproductive function of bulls with the aid of the drug kresacin (a synthetic analog of auxins).

The essence of the method consists in feeding the bulls daily with the feed of the drug krezacin at a dose of 5 mg per 1 kg of live weight. However, this method is not without drawbacks: its use also does not fully realize the capabilities of the reproductive system of the bulls, requiring large labor costs. In addition, the drug used, krezacin, has some toxicity and, at the same time, does not have a sedative effect, reducing the aggressiveness of animals.

The purpose of the invention is to increase the reproductive ability of the manufacturing bulls and increase the safety of working conditions when working with aggressive animals. The goal is achieved by the fact that, in the method for producing sperm products, including the set-up on a machine tool or a dummy animal and the use of an artificial vagina, manufacturers give an additional Gofert dose of 2 g per head for three weeks a week for three weeks.

The composition under the code name Gofert includes two well-known drugs - lithium carbonate and Glauber's salt in a 1: 1 ratio, that is, 1 g of lithium carbonate and 1 g of Glauber's salt.

It is known that lithium ions stimulate the production of prostaglandins. Glauber's salt also enhances the spontaneous synthesis of prostaglandins in the body.

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Prostaglandins raise the level of lutropin and testosterone, as a result of which the bulls increase the volume of the sperm and the concentration of sperm in it. The veterinary expert of the State Agricultural Committee of the USSR (protocol No. 10 of December 23, 186), the Gofert preparation, is recommended for extensive scientific and production tests with a persistent yellow body of females.

The advantage of the invention is that the Gofert preparation increases the efficiency of using manufacturing bulls, stimulates the reproductive ability, is not toxic, is given periodically and has a soothing effect, which ensures the safety of working with aggressive animals.

 Comparative tests of the proposed and known methods were carried out on producing bulls of the Simmental and Holstein breeds aged 3-6 years. Three groups of animals were formed: the first (9 heads), the second (4 heads) and the third (6 heads).

The experiment was divided into three periods with a duration of 1 month each. The feeding, maintenance, and use of the experienced bulls were the same throughout the test. The mode of use is two double cages per week for a fake bull and an artificial vagina. In the second test period, the bulls of the first group were fed with concentrates twice a week (after the cage) Gofert preparation at a dose of 2 g per animal, and producers of the second group - krezacin preparation at a dose of 5 mg / kg body weight per day. In the first and third periods, the bulls did not receive preparations. In contrast to animals of the first and second groups, the bulls of the third group did not feed preparations in the experimental period.

Control of sperm production was carried out on the basis of the study of the following indicators: eculate volume (ml), sperm concentration (bn / ml) and total sperm number in the pulp (bn). The test results of the proposed method in comparison with the known are given in table. 1. From the above it is clear that the proposed method is more efficient than the known one. At the end of the experiment, in bulls of the first group, the volume of spermatozoa at the end of the experiment increased by.42%, the concentration of sperm cells increased by 14% and the total number of sperm cells in eeculate increased by 66%. In animals of the second group, which were used in a known manner, the volume of the ekuleta at the end of the experiment increased by 11%, the concentration of sperm cells — by 37%, and the total number of sperm cells in the cell — by 52%,

or 14% less than when applying the proposed method. In animals of the third group, not treated with drugs, the studied indices of sperm production

at the end of the experience remained at the same level

(sperm concentration) or become lower

baseline (volume of ekulta - by 21% and the total

the number of sperm in e-culture - by 21%).

Example. To evaluate the new method

0 9 bulls of the Simmental and Holstein breeds at the age of 3-6 years with a low level of sperm production (first group) were selected. The tests were carried out in three periods of 5 months each in 1 month.

During the three test periods, (doublet) bulls were performed twice a week for a dummy animal and an artificial vagina. In the second period, experienced bulls were given Gofert preparation with a dose of 2 g per animal with feed after the cage. In the first and third periods, the drug was not fed to animals. Six other bulls (the second group) of the Simmental and Holstein breeds at the age of 3-6 years used the same way as animals of the first group, without feeding the bulls after the cage of the Gofert preparation and in the second period of the experiment. The test results are presented in Table. 2

As can be seen from the materials table. 2, the sperm production in bulls of the first group was: in the first period, the volume of eculate was 2.6 ± 0.3 ml, the concentration of sperm cells 0,70tO, 05 billion / ml, the activity of sperm cells was 7.4 ± 0.2 points, the total number of sperm in ekule is 1.9 ± 0.6 billion; in the second period, respectively: 3.2 ± 0.2 ml, 0.7 ± 0.04 billion / ml, 7.9 ± 0.2 points, 2.38 ± 0.4 billion; in the third period, respectively: 3.7 ± 0.5 ml, 0.81 ± ± 0.08 billion / ml, 7.9 ± 0.2 points and 2.95 ± 0.7 billion.

In animals of the second group, the studied parameters of sperm production were: in

5 of the first period - eculate volume 4.2 ± ± 0.3 ml, sperm concentration 0.90 ± ± 0.07 billion / ml, sperm activity 7.9 ± ± 0.1 point, total sperm in eculae those 3.78 ± 0.6 billion; in the second period, respectively: 3.9 ± 0.5 ml, 0.86 ±

0 ± 0.04 billion / ml, 7.8 ± 0.4 points, 3.35 ± 0.5 billion; in the third period, respectively; 3.3 ± 0.7 ml, 0.89 ± 0.06 billion / ml, 7.6 ±. ± 0.5 points, 2.93 ± 0.3 billion.

Thus, tests have shown that the application of the proposed method stimulates the reproductive function in manufacturing bulls and makes it possible to increase the volume by an average of 14%.

five

Claims (1)

sperm products obtained from them (as compared with the known method). DETAILED DESCRIPTION OF THE INVENTION A method for producing sperm products from manufacturing bulls, including giving a biologically active substance with food and selecting sperm for an artificial vagina, characterized in that, in order to stimulate the reproductive function, carbon dioxide lithium and Glauber salt is used in a ratio of 1 : 1, which give the bulls twice a week after taking sperm in a dose of 2 g per head. Note. The numbers in the numerator - at the beginning of the experience, in the denominator - at the end of the experience. Table 2 Table 1