Effect of time and depth of insemination on fertility of Bharat Merino sheep inseminated trans-cervical with frozen-thawed semen

Table 1 Effect of timing and depth of insemination within cervico-uterine tract on pregnancy and lambing rates of Bharat Merino ewes inseminated with frozen-thawed semen

Timing of insemination after onset of estrus	Depth of insemination within cervico-uterine tract									Overall
Timing of insemination after onset of estrus	Full (uterine)			Mid (3^rd to last cervical fold)			Partial (os to 2^ndcervical fold)			Overall
	n	Pregnancy rate (%)	Lambing rate (%)	n	Pregnancy rate (%)	Lambing rate (%)	n	Pregnancy rate (%)	Lambing rate (%)	n	Pregnancy rate (%)	Lambing rate (%)
14 & 22 h	89	31.5	20.2	23	17.4	17.4	28	17.9	17.9	140	26.4	19.3 ^a
10 h	73	21.9	11.0	12	16.7	8.3	15	13.3	6.7	100	20	10 ^b
Overall	162	27.2	16.0	35	17.1	14.3	43	16.3	14.0	240	23.3	15.4

Values with different superscripts in same column are significantly (P < 0.05) different.

ISSN: 2055-0391