N.J. Stat. § 4:11-36
All live poultry shall be bought by avoirdupois net weight and it shall be unlawful for any person to buy or receive or cause to be bought or received for the purpose of resale or manufacture, as dealer, broker, agent or otherwise, any poultry unless the same is weighed on suitable scales which have been tested and sealed by an authorized weights and measures officer; and the purchase of live poultry by the lot, the pen or by the flock is prohibited under the terms of this act; provided, however, that where special circumstances exist and are shown, the State superintendent or a county or municipal superintendent may, upon request, give approval to a sale of live poultry by the lot, pen or flock and such sale shall not come within the provisions of this act.
N.J.S. § 4:11-36