Determination of the digestible energy intake and apparent absorption of macroelements in pasture-fed lactating Thoroughbred mares
Brief content of the article
The authors studied the nutritive value of pasture in terms of digestible energy (DE) intake (DEI) and dry matter intake (DMI) and digestibility to determine the absorption of macroelements in lactating Thoroughbred mares grazed on good quality ryegrass-white clover pasture. For this experiment 8 lactating mares and their foals were used. Trials were conducted do determine dry matter intake and digestibility parameters and feacal output of several nutrients. The authors concluded that good quality ryegrass had a DE content of 10.8 MJ/kg DM and a macroelement composition of 3.33 g/kg Ca, 3.0 g/kg P, 1.67 g/kg Mg, 1.67 g/kg Na and 24.2 g/kg K will provide adequate DMI, DEI and Macro-element intake to lactating Thoroughbed mares.
Keywords: requirement; pasture; dry matter; crude protein; soluble carbohydrate; ADF; NDF; minerals.
Grace, N.D., Shaw, H.L., Gee, E.K. and Firth, E.C. 2002. Determination of the digestible energy intake and apparent absorption of macroelements in pasture-fed lactating Thoroughbred mares. New Zeeland Veterinary Journal 50: 182-185.
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