Do you really want my opinion or do you want me to agree that what your doing is okay? I think medicated chick starter and starter grower products are esential to get your birds growing and healthy first before you try to bulk them up. The protein level is actually higher than you might think. I believe the product we use on our chicks and juveniles is 18% up until they are about 13 weeks old and coop ready. At that point, I have my meat birds on a slightly different diet than my egg layers. Tinkering with protein and supplements is pretty crucial to how your chickens evolve and thrive.
Excessive high levels of 20% protein or greater "may" cause bleeding if fed to them too early on and possibly long term. Both feed reps from Purina and Nutrogena from my local feed store agree on this. There are time points throughout the yearly cycle that chickens need added protein which can benefit not only their health but also maintain growth and weight. Dont be led down the path that more is greater!
Keep in mind that chickens aren't turkeys and will never be! The quality of what you bring to the table is more important. It is important you recognize the standard norm weight of your breed and what size you can expect that bird to reach at full maturity. Strive to reach the max weight within that breed and keep them healthy and tasty! Or, make them great egg layers if that is your goal. They are what you feed them.![]()
We have true heritage, standard-bred Javas which are fed a 24% chick starter for 4 months and switch to the 21% Purina Flock Raiser after that. We've fed this regimen for years without any problems. We do not feed medicated chick starter, which simply contains amprolium to help guard against coccidiosis. And yet we have never had a problem with coccidiosis even though we don't feed medicated feed, while poultry breeders I know that have good husbandry methods use medicated feed because they can't seem to keep coccidiosis under control without the medicated feed. Never have our birds exhibited any adverse reactions from feeding our chosen dietary regimen. Our birds are quite healthy and we not only can see them from the outside, but we also see them from the inside because we butcher our birds to eat. And being that I am a registered nurse and my husband is a veterinarian, we know what we are looking at when we are examining a live bird or looking at a dead bird's internal structures.
What you feed depends on many, many variables. There is not a one-size-fits-all. Purina and Nutrena and all the other companies may tell you there is, but they are trying to sell their products. The feed reps are not veterinarians or poultry scientists with nutrition education and experience. While I would believe what a feed rep told me about their product, because they are supposed to be able to answer some basic questions about the products they sell, I would not assume they knew much of anything else about the nutrition needed for my chickens in my situation. Taking the feed rep's word as gospel without doing my own research and applying it to my own situation is as bad as going to Tractor Supply and letting them give me medical advice about my poultry when their only level of expertise is "This is what most people buy for that problem and they say that it works."