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).
Â· just now. Report Abuse. Most chicken breeds start laying small eggs around 6-7 months of age. They will continue to lay well for about 2 years, then they start to taper off,...might lay 3 eggs a week then 2. Most farm people do not keep laying hens beyond 2-3 years..they go into the pot.But if you plan on these being pets...well, as long as you're willing to keep feeding them.....eport Abuse. Most breeds start laying about 20-22 weeks and will lay every day or every other day for about 3 years. They will lay after that but not as much. If people arekeeping them for eggs they usually kill them and use them for stewing hens after about 3 years.