123. The Effect of Variations in Feeding on Dairy Cows Yielding Milk of Poor Quality

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Abstract
Four cows, all giving milk low in solids-not-fat, were used for the experiment:1. The change from winter rations to pasture produced a decided increase in the solids-not-fat percentage and milk yield.2. Well-balanced rations fed to the cows during two lactations showed a small rise in the milk yield and solids-not-fat during the second lactation, but did not increase the solids-not-fat to above the 8·50 per cent, limit.3. Feeding a high protein ration of albuminoid ratio 1:2·76 produced no change in milk yield or casein, decreased the solids-not-fat and lactose, and increased the total milk nitrogen and albumin and globulin nitrogen.4. Feeding a high carbohydrate ration of albuminoid ratio 1:9·90 did not affect milk yield, fat or ash, but decreased slightly the solids-not-fat.

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