Chicken embryos and newborn chicks are extremely sensitive creatures, especially in regard to environmental temperatures. Low temperatures, including those resulting from spray vaccination, may have a dramatic effect on the birds’ feed intake and stimulation of the immune system.
This article can also be found at World Poultry Volume 22 number 3. To view the article online simply click on the link below.
Keywords: embryos, chick health, spray vaccination, immune system, climate, broilers