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Given a passage and a query based on the passage, generate an unambiguous, concise and simple answer to the query from information in the passage. Note that the answer may not be present in exact form.

Gestation Calculator. Date when calf is due is from a given date of service based upon 283 days of pregnancy. Enter month and day and indicate whether it is the service date or the due date. Select a Month and Day. Cows with poorer fertility (or have a tougher time getting bred again after giving birth) may have a longer gestation period than those with good fertility (or those that have settled during the first part of the breeding season after a 45 to 60 day rest period).Usually small cows have a shorter gestation period than big cows, but not always. Researchers Say Incubation Period for Mad Cow Disease May Be Longer Than Thought From the WebMD Archives June 23, 2006 -- Symptoms of mad cow disease (bovine spongiform encephalopathy, BSE) may emerge more than 50 years after infection in humans, according to a new study. Researchers say the findings show that the size of a potential mad cow disease epidemic may be much bigger than previously thought. Gestation Calculator Date when calf is due is from a given date of service based upon 283 days of pregnancy. Enter month and day and indicate whether it is the service date or the due date. A: According to the U.S. Environmental Protection Agency, the average gestation period for cows is nine months. Pregnancy in cows lasts 280 days, on average; however, cows can give birth up to 290 days after conception, according to Merck Animal Health. Continue Reading Gestation Calculator: Date when calf is due is from a given date of service based upon 283 days of pregnancy. Enter month and day and indicate whether it is the service date or the due date. Generally, the average gestation period for a cow depends on the cow's breed. Manzano Angus Ranches explains that different breeds give birth at different times. For example, Jersey cows give birth at around 279 days after conception while Brahman cows tend to give birth closer to 292 days after conception. Angus cows have a gestation period of around 281 days. Learn more about Animal Reproduction Gestation Table; Frame Scoring; Calculating Adjusted Weights; EVENTS CALENDAR; CONTACT On average, the gestation period or length-of-pregnancy of a cow is 285 days long. This is similar to the pregnancy period of a woman, which is closer to around 9 months or ~2 60 days. However, actual gestation period of a cow can range from 270 days to 295 days, depending primarily on breed[s], age, body condition and nutritional health. On average, the gestation period or length-of-pregnancy of a cow is 285 days long. This is similar to the pregnancy period of a woman, which is closer to around 9 months or ~260 days. However, actual gestation period of a cow can range from 270 days to 295 days, depending primarily on breed[s], age, body condition and nutritional health. Length of gestation is primarily an inherited trait, but has nothing to do with the rate of maturity of a certain breed or an individual animal. Query: how long is the gestation period for cows
Output:
On average, the gestation period of a cow is 285 days long.