Rumen degradable protein content is highest for

Answer: Option C

Rumen degradable protein content is highest for Groundnut cake.
Groundnut cake is a by product obtained after the extraction of oil. The cake contains 45 - 60% protein, 22 - 30% carbohydrate, 3.8 - 7.5% crude fibre and 4 - 6% minerals.
A higher ruminal degradability of protein has been reported for groundnut cake at 0.46 and 0.42.