Abstract

Potential response of lactating dairy cows to bovine somatotropin (bST) was estimated ex ante for 12 geographically distinct pastoral regions of New Zealand. The estimation process was as follows. First, seasonal pasture growth data were collected or, where such data were unavailable, seasonal pasture growth was estimated from published climate data using the GROW model. The UDDER model was then used to generate, from the pasture growth information and average regional stocking rate, seasonal pasture mass profiles for an

PMB, Ekanayake, C Matthew, and WC Bailey

Proceedings of the New Zealand Society of Animal Production, Volume 56, , 289-291, 1996