Calving heifers at two is a key efficiency driver for Nottinghamshire suckler producer Ian Willison, who is aiming for fast early growth rates and a good balance of maternal genetics in his replacement heifers. Mr Willison says high youngstock growth rates and selecting sires for 200-day milk, calving ease daughters, scrotal size and positive fat depth make calving at two years old both optimal and achievable. Replacement heifers calve down at 22-23 months in the autumn-calving Simmental cross Blue herd […]