"So the risk at the moment is through peak cull periods that there may be some delays in picking up calves from farms as we manage the peak kill."
McColl doesn't expect delays to be too long but some farmers could have their bobby calves for 24 to 48 hours longer than normal.
"Farmers are aware of the issue; as an industry, we have been putting out comms through various sector bodies to ensure farmers are aware of the potential issues coming up."
He said meat processors were struggling to find enough staff for the level of work that needed to be done.
"We're certainly not at full employment and like a lot of agriculture businesses, we're struggling to find and retain labour.
"It's been a long season and we've still got to get through the rest of winter, and obviously we're seeing winter flus and ailments impacting staff numbers."
Federated Farmers dairy spokesperson Richard McIntyre said farmers should keep in close contact with their processors about delays.
"This is a continuation of the disruption that we've seen from service providers over the last wee while due to labour shortages so my advice is to be patient with processors, know that they've seen this coming, and they're trying their best.
"Farmers should keep in touch with them and also have a backup plan in place if they do need to keep bobby calves for longer to ensure their needs are met."
- RNZ