Officials visited Yr Ackery Farm, near Wrexham, following complaints about a dog seen to be eating a dead calf.
Brothers Ian and Wilfred Francis had run the farm since their father's death a couple of years earlier.
They pleaded guilty at Mold Crown Court to a dozen offences and were given 16-week sentences suspended for 12 months.
A month later, inspectors found the condition of some of the animals had improved, but the food quality was still poor.
Other offences included not reporting the death of a cow for 53 days when the time limit is seven.
District Judge Gwyn Jones told the pair "the strain has become quite clear" but it did not excuse the significant failure to comply with regulations.
He said it was also clear "some animals had died and there had been a high level of suffering for other animals".
The pair were not disqualified from keeping animals and each had to pay £3,000 costs to Wrexham council.
Don’t worry about failure; you only have to be right once.