The use of GnRH agonist for supression of cats reproductive function


  • A.I. Vasetska Lugansk National Agrarian University, st Alchevskih, 44, Kharkiv, 61002
  • A.A. Mass Lugansk National Agrarian University, st Alchevskih, 44, Kharkiv, 61002
Keywords: cat, agonist GnRH, implant, implantation, pubertal, prepubertal, sexual cycle, step excitation of the sexual cycle

Abstract

The article presents the results concerning the duration of GnRH agonist deslorelin «Suprelorin» 4.7 mg using in cats prepubertal and pubertal age. Experiments conducted on pedigree and non-pedigree cats and lasting for 2.5 years. For research was formed three groups (n = 10), age from 3 months to 3 years. The first group was the control animals, they flowed naturally estrus cycle, they received any drugs and have no contact with male. The estrus cycle of the control group of animals observed an average six times within one year, three times in spring and autumn, which is the norm for this type of animal. For 30 months (2.5 years) observation cats from the control group showed excitement stage of estrus cycle an average 15 times. Animals from the second group, age 3–6 months, which has not have the first estrus (prepubertal) was placed subcutaneous implant «Suprelorin» 4.7 mg. In the third group were cats from 7 months to 3 years which have experienced one or more estrus cycles (pubertal). The animals were implanted implant «Suprelorin» 4.7 mg immediately after the last estrus. In the second group of animals (prepubertal), excitement stage of reproductive cycle manifested through 480–1567 days after implant implanted and the average duration of the reproductive cycle was 920 days (30 months). A few cats from this group were found changes in the reproductive system such as: uneven structure of the endometrium, reducing the size of the ovaries, ovarian cysts after ovariohysterectomy. Cats from the third group (pubertal) excitement stage of reproductive cycle manifested after 120 to 730 days after implanted the GnRH implant and the average duration of the reproductive cycle was 379 days (approximately 13 months). A few cats from this group, after ovariohysterectomy, observed changes in the reproductive system such as: endometrial hyperplasia, uneven structure and porosity consistency endometrial, ovarian cyst.

Downloads

Download data is not yet available.

References

Fontaine, E., Fontbonne, A. (2011). Clinical use of GnRH agonists in canine and feline species. Reprod Dom Anim. 46, 344–353.

Walter, B., Otzdorff, C., Brugger, N., Braun, J. (2011). Estrus induction in queens with the GnRH-agonist implant containing 4.7 mg Deslorelin. Theriogenology. 75(6), 1125–1129.

Corrada, Y., Hermo, G., Johnson, C., Trigg, T., Gobello, C. (2006). Short-term progestin treatment prevent estrus induction by a GnRH agonist implant in anestrous queens. Theriogenology. 65, 366–373.

Trigg, T., Doyle, A., Walsh, J., Swangchan-Uthai, T. (2006). A review of the advances in the use of the GnRH agonist deslorelin in the control of reproduction. Theriogenology. 66, 1507–1512.

Abstract views: 119
PDF Downloads: 81
Published
2017-02-04
How to Cite
Vasetska, A., & Mass, A. (2017). The use of GnRH agonist for supression of cats reproductive function. Scientific Messenger of LNU of Veterinary Medicine and Biotechnologies. Series: Veterinary Sciences, 19(73), 25-27. https://doi.org/10.15421/nvlvet7305