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ANIMAL NUTRITION


Question:


A 300 kg steer is required to grow at a rate of 0.77 kg/day on a diet consisting of 3.0 kg hay (DM 890 g/kg; ME 8.0 MJ/kg DM) and an unknown quantity of concentrate (DM 900 g/kg; ME 14.0 MJ/kg DM). Determine the net energy of hay (MJ/kg DM).Efficiency of metabolisable energy utilisation by ruminants for maintenance is given by 0.35*metabolisabilty +0.503.Efficiency of metabolisable energy utilisation by ruminants for growth is given by 0.78*metabolisabilty +0.006.

6.78

12.8

4.03

5.67