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Milk yield and fat content, II. The effect of various factors (annual yield, age, live weight, annual fat content and stage of lactation) on the relation between daily milk yield and its fat content in Black Pied Lowland cattle


Milk yield and fat content, II. The effect of various factors (annual yield, age, live weight, annual fat content and stage of lactation) on the relation between daily milk yield and its fat content in Black Pied Lowland cattle



Z. Tierz. ZuchtBiol 59: 136-164



IN an earlier study it was found that daily butterfat percentage in relation to daily milk yield decreases in the form of a hyperbola, while the relation between daily butterfat yield and milk yield is given by a straight line. Whether annual yield, age, live weight, annual butterfat content, and stage of lactation alter the position of the butterfat lines forms the subject of the present communication, the studies having been carried out in 4 breeding areas of Black Pied Lowland cattle.

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