Determination of the Reproductive Capacity of Rabbits of Hybrid Crosses when using Artificial Insemination in Combination with Hormone Therapy in a Private Rabbit Farm

Abstract

The article provides some information on the technological process of artificial insemination of rabbits: obtaining sperm, evaluating the quality of ejaculate and its breeding, evaluation of technologies for the introduction of sperm into the genital tract of females that were carried out on the basis of a private rabbit farm, specializing in breeding hybrid rabbits, namely HYPLUS lines. The effectiveness of artificial insemination depends on the quality of the parent stock and the method of semen administration. Vaginal injection is the simplest and least invasive method. Before artificial insemination, all animals should be inspected to avoid physiological abnormalities. In order to obtain maximum performance, all rabbits are fertilized during the period of sexual hunting, synchronization of which is achieved by the introduction of hormonal preparations based on the serum of gonadotropin foal mares (GSHK). The effectiveness of the drug is determined by an external examination of the genitals. For fertilization, rabbits with a pronounced swollen, oval loop, bright red or lilac color, the foldability of the mucous membrane of which is well expressed are selected. A significant factor in the success of artificial insemination is the choice of the optimal time. The most effective time of fertilization should be performed no later than 30-60 minutes after receiving semen for evaluation and breeding. The optimum degree of sperm breeding is determined by its quality and density. Rabbit semen is divided into three types: thick, medium and rare. Various solvents are used for dilution, which include substances to maintain the energy balance of sperm, buffer components, salts, a broad spectrum of antibiotics, and components to maintain osmotic pressure and acid stabilization (pH). Specialized disposable catheters are used for semen administration, followed by the intramuscular administration of a synthetic nanopeptide, an analogue of gonadotropin-releasing hormone LH-RT-luliberin, to stimulate the exit of mature ovarium from the ovaries into the reproductive tract. The most effective reproduction technique was developed using the Foligon and Surfagon hormonal drugs for optimal profitability and rate of reproduction of rabbit, and the use of semi-dense birth for maximum efficiency and to prevent rabbit depletion