@conference {3672,
	title = {BRIEF COMMUNICATION: Plasma amino acid profiles of lactating dairy cows fed fodder beet and ryegrass diets},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {76},
	year = {2016},
	month = {07/2016},
	pages = {62-64},
	address = {Adelaide},
	abstract = {In pastoral systems, N intake by dairy cows generally
exceeds requirements (Kolver 2000). Feeds with low N
concentration can {\textquoteleft}dilute{\textquoteright} the amount of N eaten by grazing
dairy cattle, and ultimately reduce N pollution of the
environment. Use of fodder beet (FB) crop has increased
substantially in New Zealand because of its high DM yield
potential. Fodder beet also has low N content in the bulb of
the plant (0.8 to 1.5\% of DM; Heuz{\'e} et al. 2015) which is
useful for diluting dietary N content. However, these low
N concentrations could result in deficiencies of specific
amino acids (AA), potentially limiting milk production.
This paper reports the effect on plasma AA
concentrations of partial replacement of ryegrass pasture
with FB in the diet of lactating dairy cows. This information
will provide insights on how low-N diets could impact
nutrient supply to dairy cattle.},
	issn = {1176-5283},
	author = {Pacheco D and Waghorn G and Dalley DE}
}
