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Carl Leonard Pradera
A pleasant morning everyone. Greetings all the way from the Philippines!
Very good talk Prof McAllister, just to ask for you opinion on the silvopastoral systems and if there is applicability to the Canadian conditions?
Thank you Prof McAllister for the excellent presentation, do you have any recent data about greenhouse gases emissions from developing countries.
Thanks Juan - yes there is an opportunity for silvopastoral systems to play a role in carbon sequestration in Canadian agriculture. However, it needs to be taken from a strategic perspective. Needs to be value in continuing to graze and utilize the land as well as in the trees that are produced. Some of this could be accommodated through increase in shelter belts which can help reduce wind erosion, trap snow and enhance biodiversity within the field edges. However, in some regions it is very difficult to grow trees in Canada and they may rob the crop for soil moisture as well. We also need to be cognisant that if we are going to sequester carbon in trees we need to keep it there - and that means preventing forest fires - which release massive amounts of GHG into the atmosphere. One of our "Cows on the Planet Podcasts" focuses on how cows can help us achieve this goal in some forest ecosystems.
Thanks for the great presentation Prof McAllister. Increasing the livestock productivity using supplements/therapeutic antimicrobials has severe implications on antimicrobial resistance (this further supports the case for evaluating climate change within a one-health framework). What are your thoughts about striking a balance there, and are you aware of studies exploring this trade-off?
Hello Huda yes there is information on every country in the world that reports there GHG emissions to the IPCC Inventory Program. Some estimates are better than others - some countries have poor statistics on agricultural practices which is the starting point for estimating such emissions. The FAO has this information.
Hi Roshen - at present there are no antimicrobials in Canada with a claim for growth promotion. These products now only have claims for disease prevention or treatment. There are some products like growth implants and beta-agonists that can result in large improvements in feed efficiency and associated reduction in GHG emissions. These products went through rigorous regulatory procedures when they were approved for use by Health Canada and the CFIA. In my mind it would be a real shame if we were to loose these tools as they clearly improve feed efficiency and reduce GHG emissions on an intensity basis from ruminant production systems. We have a scientific paper submitted on this topic that is currently in review.
HI Tim! Can you comment on the concerns with bromoform in Asparagopsis, and its potential to be transferred through milk or meat?
Chinyere Eunice Nwafor-Okoli
Great talk! Thank you very much!
I just want to say that it is so refreshing to see research that is taking into account and preparing for climate change rather than the dual non-productive scenarios of hand-wringing and blame.
Donald - can you comment on the carbon sequestration potential of biochar as a soil amendment given its variability in how it's created and cost effectiveness, etc.?
Thank you both for the great presentations
What are the most effective ways that carbon is currently being sequestered into soils?
Very informative presentation! Thanks
Great talk and presentations, thank you both!
When you say that feeding concentrate reduce methane emissions, does that take into account the emissions used to plant/harvest etc the feed?
There are claims that no-till used in pasturelands and crops for beef are also economic preventing the use of fertilizers saving money and restoring soil health and food, your experience
Rate of C sequestration is very slow...
Thank you so much!
THANK YOU! GREAT PRESENTATION!
Thank you VM !!
great session, thanks
Chinyere Eunice Nwafor-Okoli
Thank you for putting this together
Very good talk, thank you from Brazil