You mean about Goat re: A1? Not sure. Read so many books and articles over past 30 years. It may have been a scientific abstract. I did a lot of science database research for my ebook, since it dealt tangentially with milk. I recall seeing an assay of the substances found in typical goat’s milk. By far most of the casein, well over 90%, was A2, but it seems to me that 2-3% was A1.
Yes, Eastern cows are much higher in A2; many Western breeds are higher in A1. Jersey and Guernsey are, as I recall, higher in A2. Anyway,
I suggest you start by perusing articles on Mt. Capra’s website. The company was founded in 1927 (or ‘28), after they made a goat milk formula for their babies that rejected cow’s milk. They began marketing it for women who could not breast feed but who needed to avoid cow’s milk. It is a family business still. If it is about goat milk, then they probably know it. Email them if no article answers you.
I write from memory. If I am wrong, let me know.
Thanks for all the info. The A2 milk company developed the test for cows using the hair from the tail head to determine whether they were A1A2 or A2A2. They also test the milk. A1 cows are culled. Nearly all the cows in New Zealand, home base to the company are all A2A2. They have a contract now with China supplying them with their A2 Platinum baby formula. There are 3 processing plants in the US now that are packaging A2 fresh milk from herds that have converted here. No infant formula here yet in the stores, but it can be found on the internet. I think it will take a decade or 2 but eventually all cows here will be A2A2 also. That will be a good thing. I’ve been looking on the internet this evening for evidence of A1 even a trace in goats. I’ll check out the Mt. Capras website thanks. There is also a company making goats milk formula in New Zealand called Bubs. Nice to find someone on FR who is well versed on the subject!