MilkBar Calf Self Feeders feature the patented MilkBar nipple which promotes slow nursing for best calf health. Slow nursing maximizes salivation which introduces enzymes and natural antibiotics for good digestion and healthy immunities. Slow nursing cuts down on guzzling and choking which ensures milk enters the abomasum, not the rumen where scours can result. And MilkBar nursing allows calves to be raised in groups. WHY IS GROUP FEEDING BETTER? Socialized calves are more content than calves raised in isolation, but they will suck on each others tails and ears unless their salivating urge is satisfied with the MilkBar nipple. Group feeding saves labor and allows good visual monitoring to compare calves.