Effect of distiller’s rye pulp on milk yield, metabolism and health in high-yield cows

In a 120-day group feeding trial involving 24 cows, interspersed with a four-week period of individual feeding for 8 cows, 2,6 kg of barley were replaced by the dry matter equivalent of distiller’s rye pulp. Aside from measuring feed intake, milk yield and live weight gain, characteristic data were gathered for rumen fluid. There was no significant effect either on milk yield or live weight gain. Characteristic data for rumen fluid show that distiller’s rye pulp positively affects intraruminal carbohydrate breakdown. For example, the acetic to propionic acid ratio after pulp feeding was 1,88 : 1, when barley was fed it was 2,0 : 1. All rumen fluid parameters analyzed were within the physiological range so that rye pulp can be expected to cause no health or milk yield problems. Therefore the ration for milk cows in high yielding range can, at least, contain 10% distiller’s rye pulp

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