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A note on the evaluation of the acid-insoluble ash technique as a method for determining apparent diet digestibility in beef cattle.
McGeough, E.J. O'Kiely, Padraig Kenny, David A.
McGeough, E.J.
O'Kiely, Padraig
Kenny, David A.
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2010
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note on evaluation.pdf
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E.J. Mc Geough, P. O’Kiely and D.A. Kenny. A note on the evaluation of the acid-insoluble ash technique as a method for determining apparent diet digestibility in beef cattle. Irish Journal of Agricultural and Food Research 49: 159–164, 2010
Abstract
The objective was to determine if the acid-insoluble ash (AIA) method provided accurate
estimates of in vivo apparent digestibility compared with the standard total faecal
collection (TFC) method. Twelve steers, mean live weight 328 (s.d. 27.3) kg, were offered
one of three diets based on whole-crop wheat (WCW) or a grass silage (GS) diet in a 4
× 4 latin square design. Apparent dietary digestibility was determined simultaneously
using AIA and TFC methods. Agreement between the two methods depended on diet
type, with acceptable agreement (a difference between the methods of 0.06), observed
with the WCW-based diets. However, the strength of the agreement was weakened with
the inclusion of GS. Agreement statistics were found to be a useful tool for assessing
the relationship between the two methods of measurement.