In rabbit breeding farms, collecting hair from the skins of "White Giant" breed rabbits is an actual problem. Therefore, the technical task is to develop a device providing a weakening of the hair cover retention in the dermis of brine-moistened rabbit skins by the multiple exposure of the electromagnetic field of the ultrahigh frequency (EMFUHF) and pneumatic conveying of the fluff. The scientific idea involving the heat treatment of rabbit skin by repeated exposure to EMFUHF in toroidal perforated resonators in continuous mode was developed. A non-conventional approach to the design of resonator chambers of microwave devices with low-power magnetrons, providing for the repeated exposure of EMFUHF to raw materials to reduce its microbiological contamination was proposed. The prospective nature of the proposed technical solutions and methods for the impact of EMFUHF on rabbit skins in continuous mode, based on sound parameters of the electrodynamic system of microwave devices with toroidal resonators, having rational design and technological parameters and operating modes was proved. The developed ultrahigh-frequency device with the toroidal resonator provides for new results in achieving the continuity of the technological process of removing the hair cover from the rabbit skins during the brine spraying on the skins, high electric field strength and the resonator's own Q-factor, the uniformity of the raw material heating in the resonator; variations in the device capacity. The main components are a guide tube, a cable-washer conveyor, toroidal resonators and a pneumatic conveyor. Magnetrons were installed in the central parts of the resonators, and in the toroidal part, whose average perimeter is equal to a multiple of half the wavelength, there is a perforation. Proposals for the further improvement of microwave equipment for the removal of hair from rabbit skins in a continuous mode using the system of automated control and process control were submitted

microwave generators, toroidal resonators, conveyor, skinning rabbits, brine

1. Belova M.V. Design features of resonators of the microwave installations for heat treatment of raw materials in production mode. Vestnik KazGAU [Proceedings of the Kazan state agrarian University] 2015. no 4 (38). pp. 31–37. (I Russian)

2. Zhdankin G.V., Novikova G.V., Mikhailov O.V. the Development of microwave set key with mobile resonators. Vestnik NGIEI [Proceedings of NSEEI] 2017. no 2 (69). pp. 61–71.

3. Zhdankin G.V., Storchevoy V.F., Ziganshin B.G., Novikova G.V. Development and substantiation of parameters of multi-tiered microwave installation for thermal treatment of moist raw materials in continuous. Nauchnaya zhizn’ [Scientific life]2017. no. 4. pp. 4–14. (I Russian)

4. Ivashov V.I. Tekhnologicheskoe oborudovanie [Technological equipment of enterprises of the meat industry] Moscow, Kolos, 2001. 552 p. (in Russian)

5. Novikova G.V., Zhdankin G.V., Mikhailov O.V. Analysis of the developed sverkhvysokochastotnoi installations for heat treatment of materials. Vestnik KazGAU [Proceedings of the Kazan state agrarian University] 2016. no 4 (42). pp. 89–93. (in Russian)

6. Belov A.A., Zhdankin G.V., Novikova G.V., Mikhailov O.V.  Sverkhvysokochstotnaya ustanovka s toroidal’nym rezonatorom [Microwave installation with toroidal-ing a resonator with honeycomb rotor for heat treatment of raw materials] Patent RF, no. 2629159, 10 p. (in Russian).

7. Ponomarev K.K. Sostavlenie differentsial’nykh uravnenii [Preparation of differential equations] Minsk, Higher school, 1973. 558 p. (in Russian)

8. Strekalov A.V. Elektromagnitnye polya I volny [Electromagnetic fields and waves] Moscow, RIOR, INFRA-M, 2014. 375 p. (in Russian)

9. Shamin A.E., Novikova G.V., Ziganshin B.G. Technology of processing fur raw material. Vestnik KazGAU [Proceedings of the Kazan state agrarian University] 2017. no 3(45). pp. 61–67. (in Russian)

10. Shamin A.E., Ziganshin B.G., Novikova G.V. Development of microwave dryer for fur raw materials. Vestnik KazGAU [Proceedings of the Kazan state agrarian University] 2017. no 3(45). pp. 86–90.

11. Komlatskii V.I, Loginov S.V. Effektivnoe krolikoodstvo [Effective rabbit breeding. – Krasnodar] Krasnodar, Kubsau, 2013. 224 p.

12. Opisanie sposoba snyatiya pukha [Description of the method for removing fluff for felt production from skins of rabbits and hares] Available at: http://www.findpatent.ru/patent/4/40499.html. (in Russian)

13. Sposob mikrobiologicheskoi obrabotki [Method of microbiological treatment of cellulose-containing raw materials] http://www.findpatent.ru/patent/3/35319.html. (in Russian)

14. Tao Y.R. Studies on quality rex rabbit fur. World Rabbit Science. 1994. no. 2(1). pp. 21–24.

15. Petersen A. The influens of feeding on the chemical composition of carcasses and on pelt quality in the castor rex rabbit. World Rabbit Science. 1995. no. 3(3). pp. 141–145.

16. Allain D., Rochambeu H., Vrillon  J. The inheritance of wool quantity and live weight in the French Angora rabbit. Animal Science. 1999. no. 68. pp. 441–447.

17. Colin M. Rabbit production in east European countries. World Rabbit Science. 1993. no. 1. pp. 37–52.

18. Herrmann S., Lange  K. Characteristics of angora rabbit fibre. World Rabbit Science. 1996. no.  4. pp. 155–158.

19. Derkanosova A.A. Analysis of the prospects of production of domestic feed preparations. Vestnik VGUIT [Proceedings of VSUET]. 2012. no. 2. pp. 194–196. (in Russian).