@article {3672,
	title = {Effects of a daily dose of zeolite on rumen ammonia of lactating dairy cows consuming fresh-cut ryegrass pasture},
	journal = {New Zealand Journal of Animal Science and Production},
	volume = {78},
	year = {2018},
	month = {07/2018},
	pages = {137-141},
	address = {Lincoln},
	abstract = {Zeolites are aluminosilicates that can be safely fed to ruminants on a daily basis. They have a strong affinity for cations, including
ammonium (NH4
+), which creates the potential to adsorb excess ammonium released in the rumen and reduce urinary nitrogen (N)
excreted. The main objective of this proof-of-concept study was to evaluate the effect of a single dose of 300 g of zeolite, deposited
into the rumens of cannulated dairy cows before the main morning meal of fresh-cut ryegrass pasture, on changes in rumen
ammonium concentrations over the following 8 h. The two-week trial was a cross-over design with 12 cows, either fed ryegrass
as a sole diet (Control) or with zeolite (Zeolite). There was a consistent trend for rumen ammonium concentrations in the zeolitetreated
cows to increase more slowly over time, and were lower than control cows 8 h after the zeolite was given (P = 0.08). This
study provides some indications that a daily dose of zeolite, fed at the onset of the morning meal, may have a moderating effect on
rumen ammonium concentration, and reduce plasma urea N concentrations in lactating dairy cows fed a ryegrass-dominant diet.},
	issn = {1176-5283},
	author = {Beukes PC and Gregorini P and Waghorn GC and Selbie PB}
}
@conference {39925,
	title = {Influence of individual beef cuts on net carcass value},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {44},
	year = {1984},
	month = {Jan},
	pages = {235-238},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	abstract = {Expected rates of genetic change in lamb growth and composition were calculated for 2 different selection goals; increase in lean growth rate (LRG) and decrease in weight-adjusted \% fat (APF). Carcass fatness was measured in a number of ways on an animal{\textquoteright}s own or its relatives{\textquoteright} performance. Under either selection goal, all selection programmes resulted in reduced \% fat adjusted for age. All selection programmes for either selection goal improved lean weight but there was little improvement over selection for live weight alone. Alternatively, use of fat measurements did not decrease lean weight improvement and resulted in leaner carcasses. Changing carcasses from 13.5 kg and 25\% fat to at least 15 kg and no more than 24\% fat was most quickly achieved by selecting against APF.},
	issn = {1176-5283},
	author = {Selbie PB and Nicol AM and Mellon MJ and Bass JJ and Duganzich D}
}
