Journal article

Predicting milk fatty acids and energy balance of dairy cows in Australia using milk mid-infrared spectroscopy

PN Ho, LC Marett, WJ Wales, M Axford, EM Oakes, JE Pryce

Animal Production Science | Published : 2019

Abstract

Mid-infrared spectroscopy (MIRS) is traditionally used for analysing milk fat, protein and lactose concentrations in dairy production, but there is growing interest in using it to predict difficult, or expensive-to-measure, phenotypes on a large scale. The resulting prediction equations can be applied to MIRS data from commercial herd-testing, to facilitate management and feeding decisions, or for genomic selection purposes. We investigated the ability of MIRS of milk samples to predict milk fatty acids (FAs) and energy balance (EB) of dairy cows in Australia. Data from 240 Holstein lactating cows that were part of two 32-day experiments, were used. Milk FAs were measured twice during the ex..

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