This is practically the easiest and most convenient method of testing pregnancy in cows. var mm = newdate.getMonth() + 1; The typical calf weighs between 55 and 100 pounds. Are you looking for a gestation calculator for cows? Read this complete guide on everything you need to know about cow gestation (length, stages, problems, and more). Cow Repurchase Decision Tool. The cell mass will typically arrive within the uterus by the end of the 2nd week after fertilization. As much as of a blessing getting more than one calf at once is, you should be aware of the drawbacks. // return false; The Gestation Period for Cows is approximately 279-292 days from the first breeding. var date = new Date(tt); These four are the most common ways you can tell if a cow is pregnant. The cattle gestation period length has approximately 283 days. Gestation Calculator Select Your Breeding Date: Gestation Table Click to Download Enter your zip code and hit go to find a dealer near you! At this stage, the cow fetus is roughly the size of a small cat and grows relatively slowly. Optimal Milk Module - For commercial producers, Angus Optimal Milk allows you to enter your current average cow weight and cow, her milking level, plus your annual estimated . It takes 2 to 6 hours for the calf to rotate to an upright position. The birth generally takes between half an hour to two hours. You can return any time to this calculator to check how many days are left until the due date as long as you remember your cows' breeding date. Gestation Chart This gestation chart is for your use in determining due dates for beef cattle.