The unpaid cash seller or poultry grower shall lose the benefit of such trust if, in the event that a payment instrument has not been received, within 30 days of the final date for making payment under section
228b–1 of this title, or within 15 business days after the seller or poultry grower has received notice that the payment instrument promptly presented for payment has been dishonored, the seller or poultry grower has not preserved his trust under this section. The trust shall be preserved by giving written notice to the live poultry dealer and by filing such notice with the Secretary.