I have found 3 papers describing urine total urine collection apparatuses.  I assume that you may be able to contact the authors and find the devices for purchase.

Here is a link describing where to order the collection cups and the udder supports to hold them.

Hope this helps.

http://extension.psu.edu/animals/dairy/nutrition/nutrition-research-tools/modified-urine-collection-cup

Hi,

We used to collect only fraction of the urine for sampling. it was done in the old fashion with a bucket and waiting early in the morning after thei stand up (this was done at pasture). We keept the cows in the parlour for an hour or so to collect the most of them. You can catch 70% of the cows if you have a big group of helpers (you need to be close enough to the cow to catch the urine). We repeated the technique in the following mornint co catch the urine of those cows we didnt get in the first morning. I hope this help you. Maybe the equipment that Jenifer mention could be usefull as well. Regards. Daniel

I think the best way to collect urine sample is Folley's catheters. But you have to modify with urine collection apparatus that you change in day. Neverthless I dont know the exact size of folley's catheter for cows... 

Urine cups were used at Penn State University.

The reply from Jennifer Bellaw is complete regarding urine collection from cows. My question is, You want total urine per day basis or you need a sample at a particular time for some biochemical analysis occasionally?

For most metabolic study one need to collect total urine and the devices which is given by the published literature is very good. Some time people use Folley's catheter for this. It should be very gentle  otherwise animals get internal injury during fixing the catheter. 

We are collecting urine from animals for pregnancy diagnosis. In the morning securing a animal in a chute and giving a perineal  massage you can collect samples from animals without any problem. I am giving the link for details for this.

http://www.dpi.nsw.gov.au/agriculture/livestock/animal-welfare/general/livestock/sop/cattle/urine-collection

https://www.youtube.com/watch?v=gaAaPLTH4HA

Thank you.

Can you please contact  Professor N.  Ngongoni  on the given  email: [email protected].     He did something on urine and purine derivatives, possibly he may have the know how on urine collection in ruminants. He specializes on protein nutrition.

Good luck

Thank you all for your answers and all these interesting information I am going to study!

Based on my field experience, the best way for collecting urine from animal is just go for per-rectum examination and slightly massage the bladder,  you will can get liters of urine freshly, For this you need to get some veterinary doctor help.

Best of luck

 how we collect urine from different animals

http://extension.psu.edu/animals/dairy/nutrition/nutrition-research-tools/modified-urine-collection-cup