Thank you for contacting the UVM Master Gardener Helpline with your question about weed seeds in compost.  

I have a couple of suggestions on how to kill weed seeds in your compost.  

If you are able to get the heat in your compost system to 140 degrees for 3 or more days, any weed seeds will be terminated.  Texas A&M Extension published an article you will find helpful entitled “Composting to Kill Weeds”:  https://aggie-horticulture.tamu.edu/vegetable/wp-content/uploads/sites/10/2010/10/E-326.-Easy-Gardening-Composting-to-Kill-Weed-Seeds.pdf

Another option is to solarize your raised bed which will also terminate the weed seeds.  Oregon State University Extension published “Soil Solarization an Alternative to Soil Fumigants”:  https://extension.colostate.edu/topic-areas/agriculture/soil-solarization-an-alternative-to-soil-fumigants-0-505/. 

I also offer this “General Information for the Potential Camelid Owner” from Oklahoma Cooperative Extension Service.  “Llamas and alpacas are pseudo ruminants and have three stomachs (cows, sheep and goats — all true ruminants have four).”:  https://extension.okstate.edu/fact-sheets/print-publications/vtmd/general-information-for-the-potential-camelid-owner-vtmd-9122.pdf.  I would need to seek additional advice to see how this impacts weed seed survival.

A few more articles you might find helpful: 

.  “How to Use Compost in Gardens and Landscapes” published by Oregon State University Extension https://extension.oregonstate.edu/catalog/pub/em-9308-how-use-compost-gardens-landscapes

.  “Safely Using Manure in the Garden” published by the University of Wisconsin Extension:  https://hort.extension.wisc.edu/articles/safely-using-manure-garden/

I hope this information is helpful.  If you have any further questions, please feel free to reach out.