Question:  query regarding  use of urea in cattle feed - 
Answer:  urea treated straw can be use as cattle feed , to increase the nitrogen content in the straw he method should should be practise , but the proportion of urea use in the straw must fulfill the norms without toutching the toxic level [ 2 kg of urea solution can be spray over 100 kg of straw  which should be kept in compressd form for 5-10days prior to use as feed, this procedure will increase the palatability of straw with a pleasent flavour , which is prefered by the cattle ]