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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
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.
Muskoxen live in herds of 12–24 in the winter and 8–20 in the summer when dominant bulls expel other males from the herd. [52] They do not hold territories, but they do mark their trails with preorbital glands. [53] Male and female muskoxen have separate age-based hierarchies, with mature oxen being dominant over juveniles. [52]
A crossbreed produced by crossing a Hereford bull with Holstein or Friesian cows; used to obtain beef offspring from dairy cows. Not maintained as a separate breed, although females may be used for further breeding with other beef bulls. Blonde d'Aquitaine: France: Pale brown, paler round eyes and nose. Muscular. Fast-growing if well-fed. Bonsmara
Thirty cows that survived a truck rollover that killed 14 others on a Connecticut highway have gotten a veterinary exam and are cleared to complete their journey, the state Agriculture Department ...
Without ovulation, she may enter interestrus, which is the combined stages of diestrus and anestrus, before reentering estrus. With the induction of ovulation, the female becomes pregnant or undergoes a non-pregnant luteal phase, also known as pseudopregnancy. Cats are polyestrous but experience a seasonal anestrus in autumn and late winter. [19]
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Early studies are showing that inadvertent exposure in the first trimester of pregnancy was not associated with birth defects, but at the moment it is not recommended to take a GLP-1 during pregnancy.