Mississippi State University has created Excel spreadsheets for keeping lambing records. There is a general spreadsheet for all sheep and one specifically for hair sheep. There is a different spreadsheet for hair sheep because they have different adjustment factors. In order to properly compare lambs, weaning weights need to be adjusted for sex, type of birth and rearing, and age of dam.
The worksheets are Excel spreadsheets, so you'll need Excel to properly run them. Instructions are included in the Excel files.
Download lamb records worksheet
Download hair sheep worksheet