mentalblog.com comments:
http://news.chabad.fm/144/8021.html
http://news.chabad.fm/144/8033.html
following this reasoning, and since one can never assert wether an animal is kosher for consumption or not until well after the animal is dead. milk should be ruled practically never kosher. that irrespective of commercial production or single cow.
since in the case of a single animal,
if found after killing treif, would not only be in excess of 1/60th but 100% not kosher.
I heard recently that this Rav said this as well.
If you have been drinking milk from a particular cow and after shchita it is revealed that she was treifa, all the milk you have been drinking was treifa. In fact, one never can drink milk or eat milk products without a safek.
Commercial milk each milching cow is individually followed and the milk can be attributed to a specific farm or batch. The same cannot be said of organic or peasant milk. From that point of view, commercial (reconstituted) milk is kosher while milk from a particular cow is dubious to say the least.
I wonder why in old Szatmarnemeti the thing never came up.
There's an additional safeik: There is no way of knowing if those 10% are treif at the time they are being milked.
once the milk is porish from the herd wouldn't the principle of kol dporish mirooba porish apply? and being that 90% kosher cows is certainly a rov it would seem there'd be no problem. but then again im adimettdly a am haoretz and a bad spelling one at that.
Two quick comments:
1) As a general rule, until proven otherwise the so-called triefa has a chazaka as kosher. Her milk is therefore not an issue of "after-the-fact" but "lechatchila"
2) Generally, when a cow has some reason that will eventually "disqualify" her, she general gives less and less milk as the "disability" worsens. In fact, therefore, the actual amount of milk id less than 10% even when the number of cattle might be numerically 10%.
blogger is down, again! enough, time to move to wordpress
In commercial herds, any decrease in production in an individual cow is immediately noticed and the cow replaced. So there may be no kashrus issue at all.
I heard about this on a shiur by Rabbi Yitzchok Chanoka (part of a 3-part series on Bishul Yisroel, Cholov Yisroel, and Pas Yisroel).
He said that the typical issue is with animals known as "DA Cows", where cows commonly have a problem with dislocated internal organs (I think) after giving birth. They are usually given an operation to fix it, thereby rendering them as treif animals (and their milk becomes ossur.
I haven't heard anything about 10% as a statistic, but apparently it affects a hefty proportion of cattle, and has been going on since the 1980s.
It is possible to check the cows for this - the operation leaves a scar, and Mashgichim for Cholov Yisroel milk also prevent these cows from being milked - thus only unsupervised milk is affected.
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