The calf was a normal 84-pound heifer and the 278-day breeding date was used. One cow was observed to accept service during 2 out of 3 pregnancies included in this study. In the calculation of results, all abortions were excluded, as well as one gestation period of 322 days from the last-known service.he calf was a normal 84-pound heifer and the 278-day breeding date was used. One cow was observed to accept service during 2 out of 3 pregnancies included in this study. In the calculation of results, all abortions were excluded, as well as one gestation period of 322 days from the last-known service.
This is another varies with the individual bird and the breed answer. Some chickens lay an egg almost every day, others every 1.5 to 2 days. Younger hens (called pullets if less than one year old) will lay smaller eggs at larger intervals until they reach maturity.ens lay eggs on the same schedule as without a rooster present. If the rooster is allowed to mingle with the hens, there is a high likelihood that the eggs will be fertilized. This could result in chicks if the eggs are allowed to incubate (either in the nest under the hen or in an egg incubator).
A chicken may take from about 5 minutes to an hour to lay her egg. She will lay an egg a day at approximately the same time. It takes about 20 hours for an egg to be made inside her body.That's why she is limited to one egg per day.It takes 20 hours to make an egg. It takes 20 hours to make an egg and between 5 minutes and an hour to lay it, depending on the hen. rooster is necessary to have fertilized eggs, but a hen will lay eggs even if no rooster is present. Incubation time for fertilized eggs is 21 days. Days 1-18 require an internal temperature of 99.5 F and a humidity of 50-60%. Days 18-21 require an internal temp of 99.5 and a humidity of 70-80%.