[Growth studies of bulls of the black pied dairy cattle breed during low feed levels. 3. Anabolism and energy metabolism at empty body weight at slaughter].


In two long-term individual feeding experiments with rations very rich in roughage, nutrient and energy retention in the course of live weight development of black-and-white dairy bulls were determined. For this purpose, a total of 123 animals were slaughtered at the age of 5, 9, 12, 15, 18, 21 and 24 months, and the total body was analysed of 97 animals… (More)