Observations on the age at first breeding of West African Dwarf Sheep University Ibadan. Nigeria showed that optimal and weight 1st young ewes was not less than eleven months least 13kg respectively When mated earlier, incidence abortion in­creased lambs tended to smaller birth. In older ages lengthening generation internal unacceptable. The relalionuship between (4 ) (X) from four 56 weeks est...