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2001 | 45 | 2 |

Tytuł artykułu

Influence of elimination of morphologically dominant follicles on the effectiveness of superovulation in heifers

Treść / Zawartość

Warianty tytułu

Języki publikacji

EN

Abstrakty

EN
Leaving on ovaries a morphologically dominant follicle on the day of start of superovulation significantly lowered its effectiveness in heifers. Mechanical removal of the dominant follicle increased the effectiveness of superovulation. Influence of elimination of a dominant follicle was especially visible in these cases, in which the follicle remained on the ovary during 4 d before the programme started. Significant differences were ascertained in the numbers of corpora lutea found on ovaries on the day of embryo collection and in the numbers of nonfertilized ova.

Wydawca

-

Rocznik

Tom

45

Numer

2

Opis fizyczny

p.267-273

Twórcy

autor
  • National Veterinary Research Institute, 85-090 Bydgoszcz, Poland

Bibliografia

  • 1. Adams G.P., Matteri R.L., Kastelic J.P., Ko J.C.H., Ginther O.J.: Association between surges of follicle stimulating hormone and the emergence of follicular waves in heifers. J. Reprod. Fertil., 1992, 94, 197 - 198 .
  • 2. Assumpção M.E.O.A., Madureira E.H., Arruda R.P., Celeghini E.C.C., Gusmoes P.P.G., Candini P.H., Visintin J.A.: lnfluence of the dominant follicle on the superovulatory response in nelore heifers. Theriogenology, 1997, 47, 165 abstr.
  • 3. Bartman C.P.: Untersuchungen zur Verbesserung der Superovulationsergebnisse beim Rind durch Entfernung des dominanten Follikels am Eierstock mit Hilfe der Sonographie. Tierärztliche Hochschule. Diss. Hannover, 1992.
  • 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. Botz R.: Untersuchungen zur Verbesserung der Auswahl von Spendertieren für den Embryotransfer beim Rinde mit Hilfe der Sonographie. Tierärztliche Hochschule. Diss. Hannover, 1991.
  • 6. Bungartz L., Niemann H.: Effects of a dominant follicle on ovarian responses of dairy cows following various superovulatory treatment schedules. Theriogenology, 1993, 39, 198 abstr.
  • 7. Bungartz L., Niemann H.: Assessment of the presence of a dominant follicle and selection of dairy cows suitable for superovulation by a single ultrasound examination. J. Reprod. Fertil., 1994, 101, 583 - 591.
  • 8. Huhtinen M., Rainio V., Aalto J., Bredbaccka P., Maki - Tanila A.: Increased ovarian responses in the absence of a dominant follicle in superovulated cows Theriogenology, 1992, 37, 457 - 463.
  • 9. Nohner H.P., Hahn J., Hahn R.: Optiemeirung der Embryonenausbeute beim Rind durch Aspiration der Flussigkeit Grosser Follikel vor Einleitung der Superovulation mit Hilfe einer Ovarpunktionkaniule. Dtsch. Tierärztl. Wschr., 1996, 103, 302 - 306.
  • 10. Vinkler A., Lopatářova M., Havliček V.: Influence of the ovarian cycle stage at beginning of superovulatory stimulation on ovarian respons and quality of aquainted embryos. The International Conference: 10TH PŘIBYL'S Days. Actual problems of animal Reproduction, Košice, 1999, 78 - 83.
  • 11. Wehrman M.E., Bergfeld E.G., Cupp A.S., Kojima F.N., Peters K.E., Mariscal V., Sanchez T., Kittok R.J., Kinder J.E.: Development of a persistent ovarian follicle influences response to superovulation in heifers. Theriogenology, 1994, 41, 332 abstr.
  • 12. Zbylut J., Jaśkowski J.M.: Magazyn Wet., 2001, 10, 28-30.

Typ dokumentu

Bibliografia

Identyfikatory

Identyfikator YADDA

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