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Cows are at their most fertile between 60 and 80 days after calving. Cows remaining "open" (not with calf) after this period become increasingly difficult to breed, which may be due to poor health. Failure to expel the afterbirth from a previous pregnancy, luteal cysts, or metritis, an infection of the uterus, are common causes of infertility
Pregnant, lactating, and elderly women, for example, are susceptible to anemia and low bone density, mainly due to inadequate iron and calcium intake — nutrients readily available in red meat ...
They consist on a stainless spiral coil coated with an inert silicone rubber matrix impregnated in progesterone (1.55g). It has a nylon string that is placed hanging out of the vagina. Tying a loop on the string can facilitate removal of the device in the event the string is shortened to prevent rogue heifers or cows pulling them out.
The etymology of the term "freemartin" is uncertain: speculations include that "free" may indicate "willing" (referring to the freemartin's willingness to work) or "exempt from reproduction" (referring to its sterility, or to a farmer's decision to not bother trying to breed a freemartin, or both), or that it may be derived from a Flemish word for a cow which gives no milk and/or has ceased to ...
Cattle regurgitate and re-chew their food in the process of chewing the cud, like most ruminants. While feeding, cows swallow their food without chewing; it goes into the rumen for storage. Later, the food is regurgitated to the mouth, a mouthful at a time, where the cud is chewed by the molars, grinding down the coarse vegetation to small ...
By using cows that produce offspring within a one to two-week period, synchronized breeding allows dairy farmers to artificially inseminate cows for maximum pregnancy rates with minimal effort. [29] BST is a placental lactogen (PL) hormone and falls under the class of growth hormone, or somatotropin.
Research shows that milk production may be negatively impacted if cows do not acquire enough protein during their dry phase. [13] If farms are unable to provide separate diets for far-off and close-up cows, producers may choose to manage their diets with a shorter dry period and a negative DCAD (dietary cation-anion difference) ration diet.
Here's what candy debris looks like before it gets mixed in with feed. Source: Paul Octavious "At first I was offended by the thought," of cows eating candy, Janeen Hall Cole, a dairy farmer at ...