Serum and luteal progesterone profile and histomorphology of corpus luteum during preganancy in buffalo

Abstract

The present study on Ni1i-Ravi buffalo indicates that 58.11% of the foetuses were in right and 41.89% in the left uterine horn. The frequency of male and female foetuses observed in Ni1i-Ravi buffalo was 54.2% and 45.8% respectively. No case of twinning or intrauterine migration of ova was observed during this collection. The mean length (2.78 ± 0.04 cm; P<0.01), width (2.16± 0.02 cm; P<0.001) and weight (5.40±0.10g; P(0.001) of the luteal ovary during 31st to 315th day of pregnancy were significantly higher than that of the non-luteal ovary (Table 1). The mean length (1 . 72 ± 0 . 02 cm), width (1.75 + 0.02 cm), thickness (1.32 + 0.01 cm), weight, (2.15 + 0.04 g) and volume (2.18 ± 0.04 3 cm ) of corpus 1uteum were observed during 31st to 315th day of pregnancy. Significant decrease in thickness (P(0.05), weight (P<0.001) and volume (P(0.01) of corpus luteum was iii observed in gestation group II (8th to 10.5th month) as compared to group I (1.5th to 7th month), however, the length (P)0.05) and width (P)0.05) did not significantly in the two gestation groups. differ Mean serum progesterone concentration observed during 1.5th to 9.5th month of pregnancy was 2.7 ± 0.15 ng/ml. Mean serum progesterone concentration in gestation group I (3. 11 + 0.16 ng/ml) was significantly greater (P<O.OOl) than in group II (1.76±0.16 ng/ml), (Table 6). Mean luteal progesterone concentration during 1.5th to 10.5th month of pregnancy was 27.36 ± 1.52 ~g/g. Mean luteal progesterone concentration in gestation group I (31.99 ± 1.88 ~g/g) was significantly higher (P<O.OOl) than in group II (22.00 + (Table 7).