Reproduction in goats is influenced by day length i.e. how long or short the days are. In Florida, the days begin to shorten in fall and this brings does in heat or estrus. In late spring or early summer the length of the days begin to increase and ends with the longest day of the year in June 21st-22nd. The time between late spring and the longest day of the year is referred to as the “out of season” period in goats. Few kids are likely to be born from August to November. Consequently, producers are not able to provide a regular supply of goat meat throughout the year. Some goats have the ability to breed out of season. It is important to select goats with the ability to breed out of season.
Meat goats may breed as early as five months as they reach sexual maturity between 5-9 months. Breeding young goats too early may be problematic, and so it is recommended that they be bred at 60-65% of their adult body weight or at 12 months of age. Meat goats come in standing heat or estrus every 20-21 days during the breeding season. The period of standing heat lasts for 24-36 hours. This is when the does are more receptive to the buck. Breeding behavior varies among individuals, herds and breeds. It is important to recognize when does come in heat so that they are bred early. Missed heat or failure to conceive early during the breeding season means that more feed has to be provided for the does that are not productive. In the tropics goats recycle or come into estrus throughout the year. Estrus is recognized when the does becomes nervous with the following signs. The tail is likely to shake, there is frequent urination, bleating, or swollen vulva discharge. The gestation period (time from conception to birth) ranges from 147 to 155 days with an average of 150 days. Many producers allow their buck (bellies) to run with the does (nannies). If your plan of the farm is to produce kids at a certain time of the year, then it may be advisable to introduce the buck to the does at a specific time of the year. In addition, introducing the buck stimulates recycling which is a natural way of synchronizing estrus.