yess if she becomes pregnatee
it is not possible for a 12 year old girl to express breast milk because her glands are not fully developed.
they cannot unless they are pregnant or a cow!
Jerseys produce around an average of 20,000 to 30,000 litres of milk per year.
Get bred and produce a calf.
300,00000
Cows produce 19,825 pounds of milk each year. That's 2,305 gallons of milk a year or about 8 gallons of milk every day of her milking period.
Holstein cows produce an average of 3.5% butterfat with an average of 17,000 pounds of fluid milk per year. That would be 595 pounds of butterfat per year. Holsteins are the highest total fluid milk producers, but are on the low side of percent butterfat and percent protein. Even so, if you compare Holsteins to breeds that produce higher butterfat (like Jerseys and Guernseys), the Holstein will produce more total butterfat in a year due to the higher volume of fluid milk that they produce.
A Belted Galloway cow can produce as much as 20,000 lbs. of milk per year or 9,000 liters of milk per lactation. The milk has very small fat globules which renders it partially homogenized.
Ayrshire cow can produce milk 5000 - 16000 kg/year. In 2006 Finland Ayrshire cows average milk production was 8 472 kg of milk. Fat-% was 4.29, and protein-% 3.46
It is possible if that 9 year old boy/girl is good at something that people would enjoy.
Yes, but for best milk production yearly breeding is advised.