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2014 | 17 | 2 |
Tytuł artykułu

Progesterone level does not distinguish the different course of canine ovulation determined by ultrasonography

Treść / Zawartość
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
The aim of this study was to compare progesterone concentrations in bitches during ovulation with a different course of follicular collapse as determined by ultrasonography. The study was conducted on 36 animals of different breeds, from 2 to 7 years old, and from 2 to 44 kg of body weight. Ultrasound examinations of ovaries were conducted in the peri-ovulatory period until ovulation was detected. Based on USG scans the animals were divided into two groups: group A with fast follicular collapse within 1 day, and group B with gradual follicular collapse within 2-3 days. Progesterone measurements were performed in both groups on the day when the beginning of ovulation was diagnosed by USG. Follicular collapse in group A was observed in 27.8% of animals (n=10) and in group B in 72.2% (n=26). There were no statistical differences (p<0.05) in progesterone concentrations between groups A and B (6.68 ± 0.92 ng/ml and 6.81 ± 0.57 ng/ml respectively). From 31 bred bitches (natural mating or insemination) pregnancy was confirmed in 29 females (93.5%). These results provide information about the sufficient stability of progesterone concentration during ovulation regardless of the follicular collapse speed. Ultrasonography during the peri-ovulatory period combined with progesterone measurements allows progress in ovulation management.
Słowa kluczowe
EN
Wydawca
-
Rocznik
Tom
17
Numer
2
Opis fizyczny
p.293-297,fig.,ref.
Twórcy
  • Department of Animal Reproduction with Clinic, Faculty of Veterinary Medicine, University of Warmia and Mazury in Olsztyn, Oczapowskiego 14, 10-719 Olsztyn, Poland
autor
  • Department of Animal Reproduction with Clinic, Faculty of Veterinary Medicine, University of Warmia and Mazury in Olsztyn, Oczapowskiego 14, 10-719 Olsztyn, Poland
autor
  • Department of Animal Reproduction with Clinic, Faculty of Veterinary Medicine, University of Warmia and Mazury in Olsztyn, Oczapowskiego 14, 10-719 Olsztyn, Poland
Bibliografia
  • Bocci F, Di Salvo P, Zelli R and Polisca A (2006) Ovarian ultrasonography and progesterone concentration during the pre-ovulatory period in bitches. 5th biannual EVSSAR Proceedings, p. 275.
  • Boyd JS, Renton JP, Harvey MJ, Nickson DA, Eckersall PD, Ferguson JM (1993) Problems associated with ultrasonography of the canine ovary around the time of ovulation. J.Reprod Fertil Suppl. 47: 101-105.
  • Concannon PW (2000) Canine pregnancy: Predicting parturition and timing events of gestation. In: Concannon PW, England E Verstegen J (eds) Recent advances in small animal reproduction. IVIS, Ithaca, New York, USA.
  • Concannon PW (2009) Endocrinologic control of normal canine ovarian function. Reprod Domest Anim 44 (Suppl 2): 3-15.
  • England GC, Allen WE (1989) Real-time ultrasonic imaging of the ovary and uterus of the dog. J Reprod Fertil Suppl 39: 91-100.
  • England GC, Yeager A (1993) Ultrasonographic appearance of the ovary and uterus of the bitch during oestrus, ovulation and early pregnancy. J Reprod Fertil Suppl 47: 107-117.
  • England GC, Russo M, Freeman SL (2009) Follicular dynamics, ovulation and conception rates in bitches. Reprod Domest Anim 44 (Suppl 2): 53-58.
  • Fontbonne A, Malandian E (2006) Ovarian ultrasonography and follow-up of estrus in the bitch and queen. Waltham Focus 16: 22-29.
  • Goodman M (2002) Demystifying ovulation Timing. Clin Tech Small Anim Pract 17: 97-103.
  • Levy X, Fontbonne A (2007) Determining the optimal time of mating in bitches: particularities. Rev Bras Reprod Anim 31: 128-134.
  • Reynaud K, Fontbonne A, Marseloo N, Viaris de Lesegno C, Saint-Dizier M, Chastant- Maillard S (2006) In vivo canine oocyte maturation, fertilization and early embryogenesis: a review. Theriogenology 66: 1685-1693.
  • Wallace SS, Mahaffey MB, Miller DM, Thompson FN, Chakraborty PK (1992) Ultrasonographic appearance of the ovaries of dogs during the follicular and luteal phases of the estrous cycle. Am J Vet Res 53: 209-215.
Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.agro-d89c87d5-d5ed-4c77-b55b-67529baaf5ab
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