Supplements of molasses, barley or pasture hay for dairy cows restricted in roughage intake

Bartsch, B.D.; Wickes, R.B.

Proceedings of the Australian Society of Animal Production 12: 173

1978


Accession: 000760968

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Abstract
6 groups of 7 lactating Friesians received 70% of ME requirements from annual ryegrass/clover hay for 6 wk unsupplemented or supplemented with molasses at 10 or 30% or barley at 10% or 30% or hay at 30% of ME requirement. Daily milk yield was 11.7, 12.9, 13.1, 13.3, 14.9 and 13.4 kg, fat yield was 0.46, 0.49, 0.51, 0.51, 0.54 and 0.51 kg, SNF yield was 1.00, 1.10, 1.15, 1.15, 1.32 and 1.15 kg, protein yield was 0.34, 0.38, 0.39, 0.38, 0.46 and 0.39 kg. The ME from rolled barley was used most efficiently for milk, SNF and protein production; barley would be a more economic energy source for lactating cows during periods of poor pasture growth in southern Australia.