Chicken Questions: Isa Brown Hens. The one breed of chicken I receive the most questions about is the Isa Brown. They are the most family friendly of the all the chicken breeds and one of the most common throughout Australian suburban backyards.o make ISA Brown chicks they need to be bred from the pure bred rooster and hen. Because ISA Browns are a hybrid they usually lose all the good things that make a good all-round hen such as broodiness for the sake of being excellent daily layers.
How soon after exposure would symptoms develop? Symptoms generally begin 12-36 hours after eating contaminated food, but may occur as early as a few hours and as late as 10 days. Symptoms of botulism in infants may occur up to 14 days later. No, this cannot be spread from person to person. The symptoms of botulism make hospitalization necessary.
Without treatment, people with botulism may go on to develop paralysis of the arms, legs, trunk, and the muscles used for breathing. When botulism is caused by contaminated food, symptoms usually appear within 18 to 36 hours. However, they can start as soon as six hours later â or as long as 10 days later.