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).
Female chickens (hens) generally start laying eggs at around 20-24 weeks of age. Some breeds take longer. They don't need a rooster to lay eggs and if you are lucky they will â¦ lay an egg per day. This will vary depending on the breed of the hen. You can expect the first eggs sometime around week 20 (5 months) Some hens take a few weeks longer to produce. Give t â¦ hem a boost by feeding a Laying pellet type feed that is a bit higher in protein and minerals needed to form good solid eggs.