RU2428007C2 - Method to increase reproductive performance of nutria females and their litter vitality - Google Patents

Abstract

FIELD: agriculture.

SUBSTANCE: invention relates to the field of breeding animals for furs. The method substance is to add 3-(cyclohexenyl-3)-heptamethyltrisiloxane into the main ration of breeding nutria females in the dose of 3 mg/kg of animal weight once in two days, in the second half of pregnancy.

EFFECT: method results in higher reproductive performance of nutria females and their litter viability.

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Description

The invention relates to fur farming and can be used, in particular, to increase the reproduction of nutria.

Closest to the proposed invention is the stimulation of the reproductive ability of female fur animals and the viability of their offspring by introducing 1- (chloromethyl) silatran or 1- (ethoxy) silatran into the feed, which involves the introduction of drugs into the feed by dissolving them in water and mixing the solution with the feed mass [1, 2]. However, these substances are practically insoluble in cold water, and gradually hydrolyze in hot water, which makes their practical use difficult.

The technical result of the use of 3- (cyclohexenyl-3) -heptamethyltrisiloxane (cyclosilol) is an increase in the reproductive ability of female nutria and the viability of the offspring.

This goal is achieved by introducing 3- (cyclohexenyl-3) -heptamethyltrisiloxane into the main diet of pedigree female fur animals every other day in the second half of pregnancy. At the same time, the number of females that did not give offspring decreases by 1.58 times in nutria, and the withdrawal of puppies in the first days of life decreases by 1.33 times. As a result, the exit to the main female increases by 1.2 puppies, and to the whelped one - by 1 puppy.

3- (Cyclohexenyl-3) -heptamethyltrisiloxane is a liquid that is readily soluble in fats [3].

The reproductive activity of the drug was established in scientific and industrial experiments on female nutria.

Example. Four groups of animals were formed from pregnant female nutria — analogues by weight before rutting and whelping results. Animals of all groups during the experiment were kept on a balanced diet of animal husbandry. In the second half of pregnancy, female nutria of groups 1-3 were introduced every other day into food 3- (cyclohexenyl-3) -heptamethyltrisiloxane at a dose of 1, 3 and 5 mg / kg of animal weight, respectively. Nutrias of the fourth (control) group did not introduce the drug into the feed. Puppies were recorded during the laying of females.

The results of the experiment are shown in the table.

From the table it follows that the introduction of the drug into the food of female nutria at a dose of 3 mg / kg (the second experimental group) made it possible to reduce by 1.58 times the number of females that did not give offspring, and to obtain a more viable young growth (the departure of puppies decreased by 1.33 times). As a result, the yield of puppies on the whelping female increased by 1 goal, and on the main female - by 1.2 goals, compared with the control.

The best yield of young animals in nutria was obtained with the introduction of the drug into food for females at a dose of 3 mg / kg of the mass of the animal, therefore it is optimal.

The effect of various doses of 3- (cyclohexenyl-3) -heptamethyltrisiloxane on the results of the propagation of nutria Indicators Groups of animals breeding one 2 3 four The number of pregnant females, goal. twenty twenty twenty 19 Females not giving offspring,% 5,0 - 15.0 5.3 NBR,% 15.0 10.0 15.0 10.5 Total not giving offspring,% 20,0 10.0 30,0 15.8 Fertility, goal. 6.20 ± 0.22 6.50 ± 0.31 5.50 ± 0.30 5.40 ± 0.20 Stillborn puppies,% - 3.4 - 3,5 Departure to registration,% 11.11 9.60 2.59 12.79 Exit: on a whelping female, goal. 5.50 ± 0.30 5.70 ± 0.31 5.40 ± 0.32 4.70 ± 0.29 on the main female goal. 4.40 ± 0.21 5.10 ± 0.21 3.80 ± 0.20 3.90 ± 0.30

Information sources

1. Orlov P.P., Voronkov M.G. Stimulator of the reproductive ability of female fur animals and the viability of their offspring // Pat. RU No. 2206989 C2. Bull. fig. 2003. No. 18.

2. Orlov P.P., Shulyatyev N.A. Stimulator of the reproductive ability of female fur animals and the viability of their offspring // Patent for invention No. 2249457 C1. Bull. fig. 2005. No. 10.

3. Andrianov K.A., Sidorov V.I., Khananashvili L.M. // DAN. 1964.T.158. No. 4. S.868-871.

Claims (1)

A method for increasing the reproduction of female nutria and the viability of their offspring, which involves introducing 3- (cyclohexenyl-3) -heptamethyltrisiloxane at a dose of 3 mg / kg of animal mass into the main diet of pedigree female females every other day, in the second half of pregnancy.