I have some WH ducklings coming soon, and I wanted to feed them something with sufficient niacin. I found the Purina Duck Pellets at a Tractor Supply. It seems like most options for feeding ducklings and chicks are a crumble. Are pellets a choke hazard (should I grind them up)? Also, do these still need to be supplemented with any additional niacin?
https://www.tractorsupply.com/tsc/product/purina-duck-feed-pellets-5-lb
https://www.tractorsupply.com/tsc/product/purina-duck-feed-pellets-5-lb