Feeding Standards for Australian Livestock. Ruminants

absorption activity addition Agric allowance amino acids amounts animals appears approximately assumed Aust Australia body breeds calculated calves cattle concentrations containing cows daily dairy decrease deficiency degradation described determined diet dietary digestibility effect efficiency endogenous energy equation estimates et al evidence ewes example feed feed intake forages g/kg gain given grass grazing greater growth heat higher increase indicate intake lactation lambs less liveweight loss lower maintenance matter mean measured metabolism microbial milk MJ/kg nutrition observed occur pasture period plasma practical predicted Proc Prod production proportion protein quantity range reduced relative reported requirements respectively responses rumen ruminants sheep silage similar studies suggested supplement supply Table temperature term tissues unit values variation vary vitamin weight wool yield