You mentioned your mentor told you to push your birds for early meat production, any specifics that you would care to pass along?
I am trying to improve meat production in my strain, am planning to feed 30% game chick starter for the first 4 weeks, and am ambivalent about leaving them on that (they aren't CornishXs, should not have problems outgrowing their bones, right?) or switching to 20% FlockRaiser during some part of their youth. Other than selecting against the scrawny birds, I can't think of anything else, can you?
Best wishes,
Angela
Angela, you can feed them higher protein feed, and up to the upper limits when they are on grass. Confined, there is a point where you waste money, and do more harm than good. When 20% of their ration is 14% protein grass and half of it's weight is water . . . you get the point. You have to decide where that is with your own birds. The highest protein feeds has no effect on final size.
You will get to know them, and what you like for them. I feed my Catalanas differently than I do my NHs. I would start with the 24%, and go from there. That works best for my NHs up to about 8wks where the difference starts getting smaller. It is a waste for my Catalanas, and bad for the Catalana pullets.
Getting the best numbers is management. Some different things help.
One starts in the brooder box. I try to get them off of heat early, but this does not help to get an early carcass. They will grow faster if they have access to heat longer. They utilize a lot of energy to stay warm. Earlier cooler temps does not stunt their final size, but it does have an affect on early rate of growth. Raise two boxes differently and you will see what I mean.
The above illustrates environment. You want to avoid extremes either way early in their development, if you are looking at the numbers. You want to avoid checks in the rate of growth. You want to beat the heat to. When you hatch means a lot. Ideally they will be coming off of heat once the nights stop dropping too low.
Cockerels running around the pasture will not fill out as fast. Some of it is the feed consumed. They will fill out earlier if they are confined to house and run. I let my cockerels run, but meat is not my priority. I select them accordingly, of course.
When I have, and when I do again, raise a batch for the sole purpose of flesh . . . I am not letting them run all over the place.
Get them away from pullets as soon as you can tell the difference.
Each of the above will not make a big difference. It is a series of small victories. You have to balance your priorities. Think management. Environment, feed, etc. Everything matters. What matters most is genetics and selection. You want them to reach their potential, and within the limits of their potential.
You do not want to push your pullets. If you feed a high protein feed, drop the levels once you can separate them. There is no advantage to pushing pullets. Only disadvantages. Let the genetics do the talking with the pullets, and depend on selection.
Concerning selection, improvements are had in increments. You have to hatch and raise enough to select. Especially when you are concerned with production. There has to be enough grown all of the way out to make final choices. You also have to feel the birds. Who has good fleshing at what age. It is not just who is biggest. Feel the thighs, breast etc. Go through the pullets the same way, because they are the other half of the mating.
You have to decide at what age is appropriate for your birds. You want it consistent from year to year, but gradually raising the bar. I want them as close to the peak of the growth curve as I can get them, and as close to them molting into their adult feathers as I can. They only get tougher and more expensive from that point on. Productive is efficient. If they are not efficient (comparatively speaking), they are not productive.
To select them for a purpose, the purpose has to matter. It has to be done consistently from year to year. It has to be intentional, and intelligent. There has to be a system. It is not complicated. It is only a rhythm as we go through the seasons.
The rate of improvement depends on the variability within the flock we are selecting from. Often the initial progress is faster than the later progress. At a point, progress is slow unless we can hatch thousands. 100 chicks a year is only going to get us so far, so fast, once we get to a point.
There is a link between how many hens we breed, and how many eggs we hatch.
Keeping the flock vigorous is important. Rate of growth, maturity, point of lay, etc. all is affected by vigor. You want to select from the most vigorous cocks and hens, all of the time. Health and vigor is always priority number one. Less vigorous birds, have less than vigorous offspring. Less than vigorous offspring are less productive.
Plan on bringing a new bird every so often. Going too far hurts vigor, and therefore production.
Good luck. Hope there is something helpful in all of that.