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Peter Ballerstedt Profile picture
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28 Aug, 6 tweets, 4 min read
1/4 Preparing for next week...
So, per #ipccreport2021, the effect of enteric CH4 emissions from stable herds has been overstated (and CH4 from fossil fuels similarly underestimated).
IPCC. 2021. AR6. Ch 6 ipcc.ch/report/ar6/wg1… p 123 @FarmersDefence @GHGGuru @UCDavisCLEAR
2/4 And yet, even with this OVERESTIMATE, accounting emissions for the amount of foods needed to provide essential nutrients dramatically shifts the narrative. Now divide the beef or milk by 3...
@TyRBeal
3a & 3b/4 And the land footprint and water use shifts when the essential utilizable nutrients being supplied are considered. Metrics Matter!
4/4 Livestock, especially #ruminants, are champions of #upcycling! They increase the quantity and quality of humanity's food supply. And now factor in the 3-4 x overestimation of enteric methane's effect that's been used against ruminant animal agriculture...
Moughan, P. J. (2021). "Population protein intakes and food sustainability indices: The metrics matter." Global Food Security 29: 100548.
sciencedirect.com/science/articl…
Ertl, P., et al. (2016). "An approach to including protein quality when assessing the net contribution of livestock to human food supply." animal 10(11): 1883-1889. cambridge.org/core/journals/…

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More from @GrassBased

Peter Ballerstedt Profile picture
5 Jul
Where is the carbon in grasslands ("The upside-down forest").
An example of the distribution of carbon (C) stocks in the semiarid, shortgrass steppe ecosystems to 1 meter depth. 1/4
2/4
 Values are in kilograms per hectare, values in parentheses are turnover times of component pools.
94% below-ground
<15% below-ground C is “active"
Sanderson et al. 2020. Journal of Soil and Water Conservation. jswconline.org/content/75/1/5A
3/4
 It's critical to keep the grasslands intact, the single most important action in maintaining long-term C status.
Large amounts of soil C are lost quickly when grasslands are severely degraded or converted to other uses (e.g., to cultivation)
Sanderson et al. 2020
Read 4 tweets
Peter Ballerstedt Profile picture
17 Jun
Thread on #lysine #upcycling #ruminants
1/9
 Only 4% of the feed consumed by the global domestic ruminant herd is *potentially* human-utilizable. The upcycling of the other 96% into resources that are essential to modern (& future) societies is under-appreciated.
2/9
 Note:
- The grain fed represents only 10% of the global cereal production.
- 1/4 of the grain fed is off-grade & not human edible.
Source for this & previous slide.
Mottet, et al., (2018) cambridge.org/core/journals/…
3/9
 In the US, only 11% of the lifetime feed consumed by a commercial fed steer is *potentially* human-utilizable.
Rotz, et al., (2019) sciencedirect.com/science/articl…
Read 9 tweets
Peter Ballerstedt Profile picture
16 Jun
Herdmates, it's time to dive into the rumen and its microbiome. Not literally, of course. That would be nasty.
(Thank you, Dr, Eenennaam, for the image)
@BioBeef
1/4
Tim A McAllister, PhD is Episode 62's guest. Dr. McAllister is a Research Scientist in Ruminant Nutrition & Microbiology with Agriculture and Agri-Food Canada in Lethbridge, Alberta.
Watch -
2/4
Listen - herdmates.podbean.com/e/62-tim-mcall… or your favorite podcast platform
3/4
Read 4 tweets
Peter Ballerstedt Profile picture
20 Jan
1/6
 In case it comes up.
Global sector percentages of anthropogenic greenhouse gas emissions should not be used in discussions of individual country's sectors.
epa.gov/ghgemissions/g…
2/6
 The %s in the US (which contributes 15% of the global total) looks very different than the global total for a number of reasons: Nature of economy; Population; Efficiency of ag; Fuel sources; Standard of living; etc.
epa.gov/ghgemissions/i…
3/6
 In the US, ag is included with forestry and land us changes in the accounting of emissions. When the sequestration is accounted for, that sector more than offsets its emissions. The only sector to do so. Today.
epa.gov/ghgemissions/i…
Read 7 tweets
Peter Ballerstedt Profile picture
30 Nov 20
1/n Food for thought:
An understanding of metabolic health and a species appropriate diet hasn't informed conversations about sustainable health care. The "downstream" effects of food choices are usually informed by the received wisdom of the official "healthy diet."
What if:
2/n
 So what if, just speculating wildly here, what if there was a way for people with T2D to stop using those medications? I know, that sounds like crazy-talk, but hear me out.

Big numbers and unfamiliar units are sometimes hard to visualize, so here's one equivalent:
3/n
 And another (I'll add more).

Remember:
- These figures are *just* for the diabetes pharmaceuticals
- These figures do not include medications for related metabolic diseases.

Please note: These are preliminary figures. I've asked folks to check my work.
Read 16 tweets
Peter Ballerstedt Profile picture
27 Sep 20
Real World vs biophobic #TechnoUtopianists.
1a
"Livestock are critical for sustainable development yet often overlooked. The world’s cows, sheep, goats, pigs, poultry and other farm animals are the mainstay of livelihoods across the developing world. ... "

@SimmonsBart Image
1b
"... And the energy and nutrient-dense milk, meat and eggs these animals produce provide hundreds of millions of families in the world’s poorer countries with basic livelihoods, incomes, food and nutrition."
whylivestockmatter.org Image
2a
"Globally, livestock contribute about 40% of agricultural GDP and provide livelihoods and incomes for at least 1.3 billion people worldwide. ... "
whylivestockmatter.org/economic-oppor… Image
Read 14 tweets

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