Zaburzenia przebiegu folikulogenezy u koz pod wplywem egzogennych gonadotropin

• Autorzy: Schwarz T , Murawski M. , Wierzchos E. , Nowicki J.

Warianty tytułu

EN

Ovarian follicular growth disturbances after exogenous gonadotrophin administration in goats

• Języki publikacji: PL

Abstrakty

EN

The aim of the study was to evaluate the influence of large doses of exogenous gonadotrophins on ovarian follicular growth in goats. Folliculogenesis in twelve Polish White Goats was studied in the breeding season. In every goat synchronization of estrus was realized using FGA. In group 1 (6 goats), 1200 iu of PMSG was injected at the day of sponge withdrawal (day 17). In group 2 (6 goats), for four consecutive days from day 15, 40 iu, 30 iu, 20 iu, 10 iu of FSH was injected twice a day. Daily examinations of ovaries were performed from the day when sponges were inserted, to the ovulation in the second day after superovulation estrous cycle. The number of follicles growing during medication using FGA did not differ between groups, and did not differ from observations performed during natural estrous cycle. In ovulation wave of group 1 22.2 (± 3.92) of follicles were growing, and 21 (± 3.95) reached diameter of ³ 5 mm. In ovulation wave of group 2 20.2 (± 2.93) of follicles were growing, and 18.5 (± 2.07) reached a diameter of ³ 5 mm. The differences between groups were insignificant. The ovulation rate in group 1 was 13.2 (± 3.06), and was significantly lower (P £ 0.05) than in group 2, i.e. 17.5 (± 3.67). After ovulation in the animals of group 1, follicular cysts appeared and disturbed folliculogenesis of the next estrous cycle. In the first wave there were more follicles then in the natural cycle, but after the second wave recruitment was stopped. In the ovulation wave less follicles were growing than in the natural cycle, however the ovulation rate was typical. There were larger numbers of growing follicles in the first postovulatory wave in group 2, nevertheless there were no disturbances in the rest of the cycle.

Słowa kluczowe

PL

superowulacja; hormony gonadotropowe; folikulogeneza; hormon dojrzewania pecherzyka jajnikowego; gonadotropina surowicy zrebnej klaczy; owulacja; hormony egzogenne; rozrod zwierzat; przebieg folikulogenezy; kozy

• Wydawca: -
• Czasopismo: Medycyna Weterynaryjna
• Rocznik: 2007
• Tom: 63
• Numer: 05
• Opis fizyczny: s.598-601,tab.,bibliogr.

Twórcy

autor

Schwarz T

• Akademia Rolnicza w Krakowie, al.Mickiewicza 24/28, 30-059 Krakow

autor

Murawski M.

autor

Wierzchos E.

autor

Nowicki J.

Bibliografia

• 1.Armstrong D. T., Evans G.: Factors influencing succes of embryo transfer in sheep and goats. Theriogenology 1983, 19, 31-42.
• 2.Armstrong D. T., Pfitzner A. P., Warnes G. M., Ralph M. M., Seamark R. F.: Endocrine responses of goats to superovulation with PMSG and FSH. J. Reprod. Fertil. 1983, 67, 395-401.
• 3.Baril G., Remy B., Leboeuf B., Vallet J. C., Beckers J. F., Saumande J.: Comparison of porcine FSH, caprine FSH and ovine FSH to induce repeated superovulation in goats. Proc. 8 Meet. of Eur. Embr. Trans. Assoc. (Lyon) 1992, s. 126.
• 4.Bo G. A., Adams G. P., Pierson R. A., Mapletoft R. J.: Exogenous control of follicular wave emergence in cattle. Theriogenology 1995, 43, 31-40.
• 5.Boland M. P, Goulding D., Roche J. F.: Alternative gonadotropin for superovulation in cattle. Theriogenology 1991, 35, 5-19.
• 6.Cherardi P. C., Martin G. B.: The effect of multiple injections of pregnant mare serum gonadotrophin on the ovarian activity of merino ewes. Proc. Aust. Soc. Anim. Prod. 1978, 12, s. 260.
• 7.Dieleman S. J., Bevers M. M.: Effect of monoclonal antibody against PMSG administered shortly after preovulatory LH surge on time and number of ovulations in PMSG/PG-treated cows. J. Reprod. Fertil. 1987, 81, 533-542.
• 8.Driancourt M. A., Fary R. C.: Effect of superovulation with pFSH or PMSG on growth and maturation of the ovulatory follicles in sheep. Anim. Reprod. Sci. 1992, 27, 279-292.
• 9.Gordon I.: Problems and prospects in cattle egg transfer. Irish Vet. J. 1975, 29, 39-62.
• 10.Laster B. D.: Disappearance and uptake of 125I FSH in the rat, rabbit, ewe and cow. J. Reprod. Fert. 1972, 30, 407-415.
• 11.Moor R. M., Osborn J. C., Crosby I. M.: Gonadotrophin induced abnormalities in sheep oocytes after superovulation. J. Reprod. Fertil. 1985, 74, 167-172.
• 12.Nowshari M. A., Beckers J. F., Holtz W.: Superovulation of goats with purified pFSH suplemented with defined amounts of pLH. Theriogenology 1995, 43, 797-802.
• 13.Pendleton R. J., Youngs C. R., Rorie R. W., Pool S. H., Memon M. A., Godke R. A.: Follicle stimulating hormone versus pregnant mare serum gonadotropin for super-ovulation of dairy goats. Small Rum. Res. 1992, 8, 217-224.
• 14.Quirke J. F., Meyer H. H., Lahlou-Kassi A., Hanrahan J. P., Bradford G. E., Stabenfeldt G. H.: Natural and induced ovulation rate in prolific and non-prolific breeds of sheep in Ireland, Marocco and New Zealand. J. Reprod. Fertil. 1987, 81, 309-316.
• 15.Remy B., Baril G., Vallet J. C., Dufour R., Chouvet C., Saumande J., Chupin D., Beckers J. P.: Are antibodies responsible for a decreased superovulatory response in goats which have been treated repeatedly with porcine follicle- -stimulating hormone. Theriogenology 1991, 36, 389-341.
• 16.Rubianes E., Ungerfield R., Vinoles C., Rivero A., Adams G. P.: Ovarian response to gonadotropin treatment initiated relative to wave emergence in ultrasonographically monitored ewes. Theriogenology 1997, 47, 1479-1488.
• 17.Ryan J. P., Hunton J. R., Maxwell M. C.: Increases production of sheep embryos following superovulation of merino ewes with a combination of pregnant mare serum gonadotropin and follicle stimulating hormone. Reprod. Fertil. Develop. 1991, 3, 551-571.
• 18.Schams D., Menzer C., Schallenberger E., Hoffman B., Hahn J., Hahn R.: Some studies on pregnant mare serum gonadotrophin (PMSG) and on endocrine response after aplication for superovulation in cattle, [w:] Sreenan J. M. (red.): Control of Reproduction in the cow. The Hague: Martinus Nijhoff 1978, 122-143.
• 19.Schwarz T.: Dynamika rozwoju pęcherzyków jajnikowych kozy. Praca dokt., Wydział Hodowli i Biologii Zwierząt AR, Kraków 2003.
• 20.Schwarz T., Murawski M., Wierzchoś E, Tuz R.: Oddziaływanie cloprostenolu, oraz gestagenów i PMSG na dynamikę wzrostu pęcherzyków jajnikowych u przeżuwaczy. Medycyna Wet. (oddano do druku).
• 21.Schwarz T., Wierzchoś E.: Wzrost pêcherzyków jajnikowych w cyklu rujowym kóz. Medycyna Wet. 2000, 56, 194-197.
• 22.Sharma V. K., Gupta R. C., Khurama N. K., Khar S. K.: Oestrus synchronization and superovulation using equine FSH in crossbred ewes. Vet. Rec. 1994, 135, 164-165.
• 23.Thatcher V. M., de la Sota R. L., Schmitt E. J. P.: Control and management of ovarian follicles in cattle to optimize fertility. Reprod. Fertil. Develop. 1996, 8, 203-217.
• 24.Thompson J. G. E., Wales R. G.: Observations on the loss of the cellular vestment surrounding superovulated sheep oocytes. Anim. Reprod. Sci. 1987, 15, 169-175.
• 25.Walker S. K., Smith D. H., Frensham A., Ashman R. J., Seamark R. F.: The use of synthetic gonadotropin releasing hormone treatment in the collection of sheep embryos. Theriogenology 1989, 31, 741-152.
• 26.Yadav M. C., Walton J. S., Leslie K. E.: Plasma concentration of luteinizing hormone and progesterone during superovulation of diary cows using follicle stimulating hormone or pregnant mare serum gonadotrophin. Theriogenology 1986, 26, 523-540.