Abstract

For the last two decades, the New Zealand dairy industry has intensified its milk production through the inclusion of feed supplements and the increasing use of nitrogen (N) fertilizer (Di & Cameron 2000). Increasing N losses from these systems, mainly from urine (Li et al. 2012), can negatively impact the environment. Cow N utilization efficiency can play a role in mitigating this negative effect (Woodward et al. 2011)...

M CorreaLuna, N Lopez-Villalobos, DJ Donaghy, PD Kemp, and GA AlmeidaJr

Proceedings of the New Zealand Society of Animal Production, Volume 77, Rotorua, 91-92, 2017
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