|
KMID : 1094020080250020079
|
|
Journal of Veterinary Clinics
2008 Volume.25 No. 2 p.79 ~ p.84
|
|
|
Estimating the Ovulation Time Based on Plasma Estradiol-17β and Progesterone Concentrations in Miniature Schnauzer Dogs
|
|
Kim Jeong-Bae
Kim Bang-Sil
Mun Byeong-Gwon
Yun Chang-Jin
Park Chul-Ho
Moon Jin-San
Suh Guk-Hyun
Oh Ki-Seok
Son Chang-Ho
|
|
|
Abstract
|
|
|
|
For estimating the ovulation time in Miniature Schnauzer dogs during the estrous cycle, radioimmunoassay of plasma estradiol- and progesterone concentrations was conducted on blood samples in 21 pregnant and 13 non pregnant dogs. When Day 0 was that plasma progesterone concentrations exceeded 4.0 ng/ml, on Day 64, parturition day, progesterone declined below 1.0 ng/ml with and when Day 0 was that plasma progesterone concentrations declined below 1.0 ng/ml, on Day -64, progesterone increased above 4.0 ng/ml with . Gestational length was (MeanS.D.) days from plasma progesterone concentrations exceeded 4.0 ng/ml and was days from first male acceptance. The plasma estradiol- concentrations reached maximum value with on Day .2, and plasma progesterone concentrations reached on Day 16 in pregnant and non pregnant dogs, respectively. Afterward, plasma progesterone concentrations declined below 1.0 ng/ml on Day 64 with in pregnant cycles and on Day 58 with in non pregnant dogs. No difference were found pregnant and non pregnant dogs in plasma estradiol- and progesterone concentrations (p<0.01). Based on first male acceptance (Day 0), the maximum of plasma estradiol- concentrations () occurred on Day -1 and plasma progesterone concentrations exceeded 4.0 ng/ml on Day 2 in pregnant () and non pregnant () dogs. These results suggest that in Miniature Schnauzers, the ovulation occurred when plasma progesterone concentrations exceeded 4.0 ng/ml, 3 days after plasma estradiol- peak and 2 days after first male acceptance.
|
|
|
KEYWORD
|
|
|
Miniature Schnauzer dogs, ovulation time, estradiol-17β, progesterone
|
|
|
FullTexts / Linksout information
|
|
|
|
|
|
Listed journal information
|
|
|
|