I have been eating organic chicken and using coconut oil and coconut milk and then lots of rice (rice noodles, rice cakes, ...I make little pancakes out of everything and fry them in coconut oil, yummy!.
Cows give birth any age, since a cow is a female bovine that has already had a calf or two. Heifers, on the other hand, give birth when they're ~24 months of age. Since the gestation period is around 9 months or more (by only a few days), a heifer is able to get bred at around 15 months of age.
Cows may produce their first calf when they are two, and most produce a calf by age 3. Each May, cows give birth to 1 to 2 calves. Cows rarely have more than 2 calves and young cows rarely have twins. A cow's nutritional condition (body weight) determines the number of calves born and when a cow first breeds.