Heifer breeding

[A-RRanch]

I am going to keep some of my heifer calves from this year. All born Feb-April what are your thoughts on when I can safely breed them without having to worry about them having any difficulties?

 

[TennesseeTuxedo]

Angus at 14-15 months old.

 

[Lazy M]

60% of mature weight..800 lbs for most breeds