What is meat glue? Is it allowed in Canada? （100～200words)

Answer too questions: What is meat glue?  Is it allowed in Canada? 100 ～ 200 words

useful sources:

 http://laws-lois.justice.gc.ca/eng/regulations/C.R.C.%2C_c._870/page-160.html#doc

http://files.constantcontact.com/0515061c001/d47de54f-e992-48fb-abab-7366aa8f02dc.pdf

https://www.youtube.com/watch?v=hXXrB3rz-xU