Good!
Seaweed in Cow Feed Reduces Methane Emissions Almost Entirely
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Re: Seaweed in Cow Feed Reduces Methane Emissions Almost Entirely
#92Good!
Same!
Re: Seaweed in Cow Feed Reduces Methane Emissions Almost Entirely
#93Good!
Qualsevol parida
Re: Seaweed in Cow Feed Reduces Methane Emissions Almost Entirely
#94Earlier quoted context omitted.
People are also trying to make meat without animals, by culturing animal tissues outside of an animal. You can see on a number of previous HN threads on this topic that a lot of animal advocacy groups have been forming a consensus about supporting these. I don't think any limits have been established on their eventual "realism" or biological similarity to tissues grown inside an animal. See https://en.wikipedia.org/w…
As that Wikipedia article mentions we would need a plant-based growth medium to get the meat to grow. Today they are using fetal bovine serum as a growth medium, which is both expensive and it is a by-product from the dairy industry. When a cow coming for slaughter is identified to be pregnant, the cow is slaughtered and bled, and the fetus is removed from the mother and brought into a blood collection facility. The…
I am a vegan and I am aware of the use of fetal bovine serum and I am all for it. Still way better than slaughtering billions of animals every year.
Until we have a plant-based growth medium I won't eat any fake meat myself though.
Re: Seaweed in Cow Feed Reduces Methane Emissions Almost Entirely
#95Serious question, could there be any way to instead capture said methane and use it for fuel? I feel like if the farms could make a decent buck off capturing it there’d be more incentive than say paying for seaweed.
Re: Seaweed in Cow Feed Reduces Methane Emissions Almost Entirely
#96Serious question, could there be any way to instead capture said methane and use it for fuel? I feel like if the farms could make a decent buck off capturing it there’d be more incentive than say paying for seaweed.
Yes, but it seems to need a surgical insertion into one of the cows stomachs so is probably dangerous / expensive.
https://phys.org/news/2008-07-cow-backpacks-methane-gas.html
Re: Seaweed in Cow Feed Reduces Methane Emissions Almost Entirely
#97Earlier quoted context omitted.
As other posters have said, it seems like it can be tricky to incentivise cattle owners to add algae to their feed, check this has actually been added, in proportions that have the desired effect, and so on. But how about if governments provide subsidised feed centrally, instead, with the algae added?
Or just legislate that feed manufacturers must add the algae?
Sadly, I fear legislators won't do that until there's an economic advantage for their supporters. So they need some magnates to be convinced, and buy up the production before they go ahead.
Why would legislators make regulations that just save the planet but don't make them rich? /s
Re: Seaweed in Cow Feed Reduces Methane Emissions Almost Entirely
#98I wonder: would there be any negative side-effects on the cows? Another way of putting it: is methane production in the gut of the cow a consequence of a useful process or is it something the cows can live without? Another question to ponder: would seaweed farming at such scale have negative consequences?
cows can not digest the cellulose ingredient in grass. essentially they foster anaerobic bacteria in their stomach which digest the cellulose. the cows live off the bacteria and their byproducts.
there are several different microbiobial paths from cellulose to methane with stages including acetic acid, acetone and hydrogen. depending on the conditions in the cow some of these paths are prefered or not.
I do not know whether not producing methane is bad for the cow in the long run. I guess it is not, given that the farmer mentioned in the aeticel has been feeding them the algae for a longer period of time.
Re: Seaweed in Cow Feed Reduces Methane Emissions Almost Entirely
#99I wonder: would there be any negative side-effects on the cows? Another way of putting it: is methane production in the gut of the cow a consequence of a useful process or is it something the cows can live without? Another question to ponder: would seaweed farming at such scale have negative consequences?
regarding your othe question: I'm pretty sure Bromoform can be produced large scale in classical chemical plants at low cost. question is whether that, applied as a fodder additive, has the same effect.
Re: Seaweed in Cow Feed Reduces Methane Emissions Almost Entirely
#100From 2017.
Previously on HN: https://news.ycombinator.com/item?id=12998395