I've never seen an egg count tacked onto the numbering system.
Typically, it's just a way to show how many of each sex you have. The first number is males...the second number is females...and IF you have some unsexed animals, then they would be the third number.
0.1 = 1 female
2.0 = 2 males
1.2 = 1 male, two females
0.1.2 = 1 female and two unsexed