A child born to a married woman is presumed under common law to be the child of her husband by a presumption of paternity or presumption of legitimacy.
The behaviour of cows and heifers after they have conceived is one of the best non-invasive means of determining pregnancy in cattle. Simply put, pregnant cattle will not (or should not) come into estrus or heat for the entire duration of the 9.34-month (285 day) gestation period.
The Cow Pregnancy Calculator above attempts to generalize the estimation of the due date without any additional factors using a 285 day gestation period for Cattle.Other terms for this tool include: Calving Calculator, Cow Gestation Calculator, Jersey Cow Pregnancy Calculator, etc.he Cow Pregnancy Calculator above attempts to generalize the estimation of the due date without any additional factors using a 285 day gestation period for Cattle.