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Concentrate allowances by 1971 National Research Council standards compared to other feeding guides for lactating dairy cows



Concentrate allowances by 1971 National Research Council standards compared to other feeding guides for lactating dairy cows



Journal of Dairy Science 56(1): 113-118



For 3 periods of 28 days 3 groups each of 4 Holstein and 2 Ayrshire cows were given concentrate according to (a) NRC 1971 (NAR 42, 7213), (b) the McDonald Agro-guide 1971 (NAR 36, 7004) based on digestible energy, or (c) the Canadian Dairy Herd Analysis Service based on estimated net energy. All cows were given maize silage 12.3 kg at each of 2 feeds, 2.7 kg wilted lucerne and timothy silage at midmorning and 2.3 kg timothy hay after evening milking.

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Accession: 000047906

Download citation: RISBibTeXText

DOI: 10.3168/jds.S0022-0302(73)85123-9



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