Age for breeding
September 13, 2012 at 11:19 pm #17017Member: WA
What is the age at which LB’s start breeding? This is my first experience with raising livestock. My boar is about 6 months old and my gilt is 5 months old. By doing measurements, my boar is abou 210 lbs and my gilt is about 140 lbs. I just want to know when to expect this.September 14, 2012 at 7:13 am #18134Member: TX
I have had gilts give birth as early as 11 Months, gestation is 3 Months, 3 Weeks and 3 Days. I have heard that the boars mature faster than the girls. Hopes this helps.
FrankSeptember 14, 2012 at 7:51 am #18135Member: WA
Thanks. That helps. Are there any signs or signals for when she goes into heat?September 14, 2012 at 8:05 am #18136Member: TX
I’ve noticed that if I get my gilts pregnant too early, it really stunts their growth, the sows growth, overall. That has just been my experience. We usually try and keep the gilts away from the boars until they are at least 225-250 pounds, that way they’ll be at least 275-300 when they have their first litter. Getting them to this weight usually takes over a year, but that’s what we do. We seem to get larger litters out of the larger sows. I suppose they just have more carrying capacity.
RossSeptember 15, 2012 at 1:49 am #18138Member: MO
As Frank says, age of heat caries from gilt to gilt BUT if you have the boar in with her he will soon let you know 🙂 He will start to pester her probably WAY before she is ready but she will only let him mount her when she is ready.
Depending on whether we have boars the right size we normally leave a young boar in with a young gilt so they mate when they are ready. The first litter is normally smaller but we have never had a problem with a gilt farrowing etc.
Large Blacks seem to have silent heats in that they have very little, if any physical showings. Some pigs are very visible but I know several breeders have commented that they do not know when their LB’s are in heat – that is one of the reasons they are so hard to AI accurately. Once in a while we will see one of ours mounting another pig which is an obvious sign but that does not happen all the time. The only way we know is due to the boars.
Most of our gilts come into heat between 7 & 10 mths. Most of our pigs will mate 2-3 times once heat occurs – normally over a 24-36 hr period.
MissouriSeptember 15, 2012 at 7:00 am #18140