What to look for in a Golden breeding

Golden breeding needs to be noted: 1 first heat female dogs are generally not suitable for breeding, sexually mature but the body has not reached full maturity. 2 first mating age female dogs for 1.5 years (to the second heat mating is good) male dogs for 2.0 years. 3 female dogs in heat with 1-2 times, two intervals to 48 hours is good, male dogs a year breeding 20-40 times, not more than 2 times in a week is good.