Hylines
Hylines are a hybrid chicken specifically bred for their egg laying ability, seldom going clucky.
The Hylines we get are normally aged 16 weeks, and they start laying around 18-20 weeks if well cared for
At 16 weeks they are old enough to go straight onto a good quality Layer pellet.
They have been vaccinated and the program of vaccinations is this:
The chicks Receive at the Hatchery
Mareks
Coccidiosis
Salmonella
The Normal Vaccination program on farm (where they raise them to 16 weeks) is
Megan Vac (Salmonella) 2 week & 14 Week
IB ( Infectious Broncihits) 4 week & 10 week
AE ( Avian Influenza) 11 week
So when you're buying a Hyline, it pays to ask at what age did they leave the commercial growers, as chicks bought as day olds have missed out on the 2,4,10,11 & 14 week vaccinations.