Size of dominant follicle, plasma progesterone and estradiol levels on the day of ovulation and subsequent conception rate in buffalo (Bubalus bubalis) following modified ovsynch + CIDR protocol

Figures & data

Figure 1. Schematic diagram of estradiol-based protocol, Group I (n = 15).

E₂ – estadiol-17β; GnRH – gonadotropin releasing hormone; CIDR – controlled internal drug release; PGF – prostaglandin F2α; US – ultrasonogrphy; BS – blood sample; AI – artificial insemination.

Figure 2. Schematic diagram of ovsynch-based protocol, Group II (n = 15).

E₂ – estadiol-17β; GnRH – gonadotropin releasing hormone; CIDR – controlled internal drug release; PGF – prostaglandin F2α; US – ultrasonogrphy; BS – blood sample; AI – artificial insemination.

Table 1. Diameter of largest follicle (LF), plasma progesterone (P₄) and estrogen (E₂) levels in either group (mean ± SE).

Day	LF (mm)	P4 (ng/ml)	E2 (pg/ml)
Estrogen-based group
0	6.24 ± 0.77	1.55 ± 0.41	0.12 ± 0.30
9	9.52 ± 0.56^a	1.78 ± 0.33^A	0.15 ± 0.33^c
11	12.12 ± 0.38^b	0.57 ± 0.07^B	0.33 ± 0.10^d
Ovsynch-based group
0	6.8 ± 0.45	1.15 ± 0.33	0.16 ± 0.10
7	9.81± 0.34^a	1.28 ± 0.23^A	0.12 ± 0.23^c
9	12.54 ± 0.22^b	0.52 ± 0.05^B	0.45 ± 0.30^d

^{a vs. b, A vs. B and c vs. d}p < 0.05.