Accusing the Grand Alliance government of indulging in "minority appeasement", BJP and NDA members trooped into the well of the house and raised anti-government slogans.
The issue was raised by leader of Opposition Prem Kumar during zero hour.
Later, talking to reporters, Prem Kumar also demanded closure of thousands of illegal abbatoirs in Bihar too as done in Uttar Pradesh and Jharkhand.
On the other hand, budgetary allocation for SC/ST welfare has been slashed by 20 per cent and for OBC and Extremely Backward castes by 22 per cent, he said.
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He also said that while fencing of kabristan (graveyard) was carried with utter speed in Bihar in last fiscal, the same for samshan (crematorium) did not find any favour.
Out of a target for fencing 8064 graveyards in the state in 2016-17, the government completed work in 5307 graveyards while crematorium was not given attention, he said.
Prem Kumar accompanied by Lallan Paswan of RLSP (Rashtriya Lok Samata Party), an ally of BJP in NDA, and BJP leader Neeraj Singh Bablu, also demanded stopping of illegal trade of cattle and buffaloes from the state to Bangladesh and other parts of the country.
On political front, the Opposition leader said a BJP delegation would visit Lucknow in first week of April to meet UP new chief minister Yogi Adityanath to invite him for a felicitation programme here.