Haemoglobin and potassium types were related to body weights from birth to 1 year of age and first 6-monthly wool yield in the Nali breed of Indian sheep. Weighted mean comparisons between haemoglobin and potassium types made within sires for weights at birth, weaning (3 months), 6 months and 1 year and first 6-monthly wool yield did not show any statistically significant differences for any of these traits.

Two hundred and four Targhee ewes and 15 rams were used to study the effect of the number of ewes per ram on mating activity and conception rate in ewes mated after synchronizing oestrus with intravaginal, progestinated pessaries. Each ram was mated with 8, 12, 16 or 20 ewes.

The number of ewes per ram had no influence on the percentage of ewes mated or conception rate at the synchronized oestrus. It also had no effect on percentage of ewes lambing, number of lambs born per ewe lambing or average lambing date. Seventy-six% of the ewes were marked within 8 days after progestagen treatment with a conception rate of 84-5%. This study demonstrated that one ram per 20 ewes is sufficient for maximum mating activity and conception rate in ewes mated at a synchronized oestrus.