Larson in Immunobiology of Human Milk speaks about the human placenta allows transfer of IGG to the infant whereas cow placenta does not.  This affords the human infant a higher chance of survival if mother's colostrum is not available.  



-----Original Message-----

From: Lactation Information and Discussion [mailto:[log in to unmask]] On Behalf Of Jacquie Nutt

Sent: Friday, November 21, 2014 1:12 PM

Subject: Pasteurised/homogenised milk, was: Medolac



Jane writes <<In addition, I found that when cow milk that has been

pasteurized thusly is fed to calves, they do not do well.   How can we

recommend for humans what won't work for cows?>>



Another species altogether also doesn't do too well with treated milk - my

yogurt cultures.   For some years, I've been making yogurt with raw fresh

milk (literally, 100 steps from the cow, still warm).   Now I'm in a

different country, I just cannot get it to turn out the same, now that I am

buying store milk.   Interestingly, it seems to be not so much the

pasteurised milk that's an issue, but homogenised milk. Unless I find unhomogenised milk, my yogurt method does not work.  I heat both the raw and the shop milk to the same temp in any case, so it's not that the raw milk confers any special raw properties to my method.



I must find out more about homogenisation - obviously it's altering the way the fat molecules adhere to whatever. I've always believed that this affects how it is digested/assimilated in our own bodies, and I've been happy to avoid commercial milk for that reason.  However I have no evidence yet to back this up.



I heard once (in a dairy farmers' talk!) that the placenta in different species deliver different types/amounts of antibodies and this is why calves cannot survive without cow colostrum, whereas humans can adapt in

some ways.  Any biologists on Lactnet who could add more to this?   Could

have been an Old Farmer's Tale, of course.



Best wishes

Jacquie Nutt IBCLC



             ***********************************************



Archives: http://community.lsoft.com/archives/LACTNET.html

To reach list owners: [log in to unmask]

Mail all list management commands to: [log in to unmask]

COMMANDS:

1. To temporarily stop your subscription write in the body of an email: set lactnet nomail 2. To start it again: set lactnet mail 3. To unsubscribe: unsubscribe lactnet 4. To get a comprehensive list of rules and directions: get lactnet welcome



             ***********************************************



Archives: http://community.lsoft.com/archives/LACTNET.html

To reach list owners: [log in to unmask]

Mail all list management commands to: [log in to unmask]

COMMANDS:

1. To temporarily stop your subscription write in the body of an email: set lactnet nomail

2. To start it again: set lactnet mail

3. To unsubscribe: unsubscribe lactnet

4. To get a comprehensive list of rules and directions: get lactnet welcome