Every licensed slaughterer that does not have brand inspection prior to slaughter on each day on which he slaughters, and whose hides are not inspected during the month, shall on or before the 15th day of each month mail to the bureau a written report which shows in separate columns all of the following:
(a)
The number of calves, cows, steers, stags, and bulls which were slaughtered during the preceding calendar month.
(b)
The number which he slaughtered on each date.
(c)
From whom the animals were purchased.
(d)
The date of purchase.
(e)
The brands on branded cattle and the sex and breed of unbranded cattle.