Nitrogen excretion increased along with dietary protein level as
we found in these young minks. The nitrogen retention, NPU and
BV were not affected by protein level. The optimal ratio of protein to
energy was 3.36 in the diet for mink. Diet supplemented with 28%
protein was not able to meet the requirement of young male mink.
When protein concentration reached 34% in the diet, ADG
increased and FCR was ideal for minks. In the context, 34% protein
in dietary feed for young male mink was recommended.