A routine hoof-trimming schedule helps you find and treat lame cows early.
Gerard Cramer of Cramer Mobile Bovine Veterinary Services in Stratford, Ontario, Canada, uses this calculation to help his clients determine how often a hoof trimmer should visit their herds:
(herd size x 2.6*) ÷ # of cows your hoof trimmer can do a good job on per day
* 2.6 = two evaluations per cow per year + 30 percent heifers + 30 percent lame cows
Here is an example, using a 1,000-cow herd:
(1,000 x 2.6) ÷ 40 = 65 visits per year or every five to six days.