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« on: September 23, 2010, 09:39:28 am »
if they are producing a large amount of milk during a very few months of the year, then letting the cows dry out the majority of the year - that is a very natural scenario.
the problem is, it is not a ==profitable== scenario if the milk is sold at less than many dozens of dollars per gallon.
therefore, it is unlikely that the fraction of pure grass/grass-haylage-calories/total-calories, that the cows are consuming throughout the 12 months of the year, is sizeable. For any milk that is sold commercially.
the scenario mentioned in the first paragraph, is plausible for a homestead. But if you were homesteading, you'd most likely prefer goats.
Beef operators are very upfront and proud about labeling their steer-meat as grass-finished. It is biologically and commercially plausible for a beef animal operation.
If it were true for the dairy, believe me, they'd be advertising and labelling it as such. But they are careful not to do that, because false labelling and false advertising are criminal offenses!
So they wait till they're asked, then they give these not-really-a-yes-or-no answers.
I don't mean or want to talk badly about folks who i'm sure are lovely people, but the scientific facts of a dairy animal are there for anyone to study up on!