ฝัง
- เผยแพร่เมื่อ 8 ก.ย. 2016
- You’ve probably seen cows enjoying a nice mouthful of grass, but why can't we do the same?
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Sources:
dujs.dartmouth.edu/2011/02/tur...
www.fda.gov/AnimalVeterinary/R...
science.jrank.org/pages/1335/C...
www.britannica.com/animal/rum...
www.mun.ca/biology/scarr/Rumi...
Cellulose:
www.britannica.com/science/ce...
antoine.frostburg.edu/chem/sen...
chemistry.elmhurst.edu/vchembo...
Hydrolysis/Fermentation Inside Rumen:
www.britannica.com/science/hy...
bioenergycenter.org/besc/publi...
web.mit.edu/pweigele/www/Towar...
famsbc.wordpress.com/2009/07/...
www.publish.csiro.au/?act=view...
www.eng.umd.edu/~nsw/ench485/l...
pubs.acs.org/doi/abs/10.1021/j...
arbl.cvmbs.colostate.edu/hbook...
mmbr.asm.org/content/66/3/506....
Microbes in Humans:
www.researchgate.net/publicat...
www.innerbody.com/anatomy/dige...
www.livescience.com/52026-colo...
Image Sources:
en.wikipedia.org/wiki/Cellulo...
en.wikipedia.org/wiki/Ruminan...
en.wikipedia.org/wiki/Cellula...
en.wikipedia.org/wiki/PH#/med...
"Tiny Microbes", as oppose to all those massive microbes i guess
lol
"Tiny" as opposed to all of the "teenie tiny" or the "eenine weenie teenie tiny" microbes.
*cough cough* 30cm *cough cough*
Microbes come in different sizes
There are some pretty big Amoeba living in the Mariana Trench.
This video was suggested to me after Hank yelled at me not to eat grass.
This video was looked up by me after Hank yelled at me not to eat grass.
@@ps92809 🤣🤣🤣🤣 Hank and John, teaching us all a bunch of stuffs. ❤️ there’s hope for the future.
mc
My five y/o daughter starts school today and I asked her, if there was anything in particular that she would like to learn and she said she wanted to know how horses could survive on grass? I actually always wanted to know that myself lol... now all I have to do is paraphrase everything to her and it'll make sense. Thanks for making this video.
Horses are not ruminants I read so. They have another arrangement for digesting the grass.
Horses aren't ruminants. Horses don't have multi-chambered stomachs. That basically defines a ruminant.
cause we were meant to smoke it
blaze it up
420 Graze It
+Reneguitario l
+U238 o
+U238 l
When you're so hungry you start looking at grass like THAT LOOKS DELICIOUSSS
Sometimes when I'm sitting in the lawn, I'll just start pulling grass and eat, like, half of it (just the parts that are easy to chew and are pretty sweet). I'm such a frickin weirdo 😬
🤣🤣🤣
How did Nebuchadnezzar eat grass for seven years in the Bible then?
@@godsgrace7777 By grass it meant NebuCHADnezzar was smokin WEEEEEED 🌿
Anyone eat sour grass? I love that stuff so much. I wish I could live on grass. Eating it.. I mean eating it. Lol
I like how you explain the answer as well as addressing the possible hypotheticals, this is what I've always liked about SciShow
What if I get bitten by a radioactive cow?
you switch brains and live your life as a cow. the cow goes to school, gets a nice job, car. Purdy good. :)
you'll be cow man. isn't that obvious?
+AfonsodelCB lol Cowboy
and the cow end up working in chick-fil-a
KurdRipper actually, I just noticed the OP is a woman, so cowgirl
Wait! Don't compost those lawn clippings. Use the Ruminator (TM / Patent Pending). Just put grass in, wait 3 days for enzymes to work and you gooey predigested edible grass goop. Never go grocery shopping again! Not available in stores. Order now.
(Can cause excess methane. May permanently make tongue green,enzyme packs sold separately)
"Ruminator" Did you have Dr. Doofenshmirtz name that?
+angeldude101 xD
XDXDXDXD
We have an ancient method to make grass edible. It's called lactobacterial fermentation, and we usually use it to conserve Cabbage as Sauerkraut. My grandparents did that in WW2
Pipe2DevNull I'll take 3
HUGH MUNGUS
*triggered*
I'm offended
Arrest that man
Omg omg omg
You made me regurgitate.
we can't eat grass because we took the herbivore upgrade path but didn't get "Rear Gut Fermenter" because we took "Omnivore" and the two are exclusive. Also in the early game we made the mistake of not picking up "cellulase" when we had the chance because we jumped the gun and changed our class to "Vertebrate" too soon.
Okay but i will be eating car parts when i reach god-tier because i can do that.
@@gnostaoticanarchangautalch4225 i bet after 2 years u forgot u comment this
Where do we respec?
@@HustlersMindsetz Yeah but it really sounds like me.
@@FirestoneX No respec option so I hope you have been rotating your saves.
I'm so early, there aren't even any boring, overused anus-jokes.
This doesn't feel like SciShow anymore.
But why are there anus aro...
Ya those are always the best to entert-anus
You talk in circles.
Why there is grass around my anus???!!!11!!1!
Grass
Gr-ass
You're welcome.
we eat them and now we want to eat their food too? we are just too much
eat eat eat repeat
+MrGoldFish007 welcome to america.
We don't even need to eat them. That's the best and worst part.
And this is why it's fun to live in America.
you can't have your cow and eat it
1400s: Is the Earth round?
1900s: Can we go to space?
2017: WHY CANT WE EAT GRASS
Lol
So true XD
091104chris
More like
200 BC: Is the earth round?
Feeding humans on grass would end world hunger bro. Worth investigating.
LOL
Plants eat meat, meat eats plants, meat eats meat, but do plants eat plants?
Only when nobody is watching.
yes, plants do "eat" other plants. They use decomposed plant matter as food for their growth.
yes, plants do "eat" other plants. They use decomposed plant matter as food for their growth.
But plants don't eat meat....?
Justin Parkan
He means decomposed meat (rotting).
"...as convenient as it would be to graze on your front lawn for dinner"
XDD
Cows eat grass.
I eat cows.
Therefore I eat grass.
Grass eats shit, then you eat shit.
shit is decomposed food, so i eat food
+Trison Dahal What you mean "decomposed food?"
And then when you die, you become the grass.
+Anıl Ertürk yeah it's called digestion the same thing happens with plant matter. Unless by destroying you meant cooking in which case yeah same exact thing
Love how they mentioned cows make short chain fatty acids, which is actually what makes up most of their calories.
Also non-rumenants aka hind gut fermenting herbivores use their caecum for cellulose digestion. In humans it's atrophied to the appendix though, but is still a good reservoir for bacteria for reseeding after infections or antibiotics.
So this is why you see so many cows standing around masticating.
I prefer to sit or lie down when I masticate.
I prefer to masturbate while I masticate ...
Cows have no shame. And neither does Mark Keller
Bruce Dunn I prefer to call it honest. llls
kchen075 or do both at the same time
"As convenient it would be to graze on your own front lawn for dinner", cracked me up unexpectedly. 3:32
Love your videos guys, you answer questions I would never imagine to ask.
Great video. About the neutral pH of a cow's stomach, I guess that's why feeding them corn will cause them problems. I suppose the corn will alter the pH and stress the natural microbes.
"We humans don't have it as easy."
Uhh, yes, we do.
Wild humans
Excellent video! It answered the questions I had after answering the question you proposed.
Thank you
Aww! When I was young, sometimes I would eat grass!
I know we're talking about beef rumen, but I prefer chicken rumen. I like it so much, I buy it in super bulk. Most people are happy to buy it at $0.15 per package, but I hold out for it to drop to $0.10, and then swoop in with the double coupons! It's one of the few things that stuck with me from college.
You mean gizzards?
The way this dude be saying grass got me feeling some type o' way
Very nice presentation
nice video ty scishow
Scientists: 'We're trying to find a cure for cancer'
Other scientists: 'We need funding to experiment with cellulose so we can eat grass'
"Why can't we digest grass?" Cause we not cows *ends video*😂😂😂
Interesting question, I'll have to ruminate on it for a while.
I like how this is trending after the tiktok with no explanation
I'm curious about the bioavailability of the nutrients in wheat grass juice and other wild grass juices.if we use machines to break down the cellulose is there any nutritional value without the cellulase enzyme? Also I'd love to hear about the contrast between grass and other fibrous leafy greens. Thanks!
Thanks for the info!!!
Thanks
Cow eats grass, man eats cow, vegans can't eat grass nor cows... you can't explain that...
You can eat it if you really wanted to. You just can't digest the fiber. Fiber is good for you anyway so that doesn't matter.
What is there to explain? Grass isn't food for people. Lots of other things are food.
I get the joke, dont worry. Cant explain it just like with the tides lol
Try eating a cow without cooking it or bathing it in Ammonia and see how long it takes to get food poisoning. :)
In other news beef was declared as a carcinogen by the world health organization!
actually, early humans did eat meat without cooking it. cooking meat however makes it easier to digest and reduces the likelihood of foodborn illness. cooked meat was also easier to digest than plants, and thus more filling. (it takes a lot of salad to satisfy hunger)
If we cannot break down cellulose... Is lettuce and other green veggies made up of something else?
Nicholasm 967 We dont eat any cellulose,human eat plant because they contain sugar and vitamin which are important for us,then we expell cellulose thats why plants doesnt leave you ''full''.
There's a reason those don't have many calories.
good explanation
I am disturbed and impressed.
Nice video! Two follow-up questions: Can't you cook the grass, or otherwise prepare it in a kitchen for human consumption? Or treat grass with those microbes in a factory to make it suitable for human consumption?
Cows don't have a 4 chamber stomach, they have 4 separate stomachs. Also food goes into the ruman first, is then brought up as cud, rechewed, swallowed and sent into either the ruman or reticulum, then into the omasum, and lastly to the abomasum (which is a true stomach like ours).
Or.... someone doesn't want us to wake up realizing we're surrounded by an uncontrollable food source in an over abundance.
It is fun to watch his hand
Why eat the grass when you can eat the cows instead. It's tastier anyway :P
Found the meateater
yea meet is so good
We are all omnivores meat is a natural part of our diet. Choosing not to eat meat is the UN-natural diet.
It would solve a lot of starvation issues if humans could eat grass. It's not about how something taste but if you can live just by eating it. I honestly don't think a starving child in Africa cares about the flavors.
I guess that would mean you are digesting the grass.
Would cellulase be helpful in digesting every leafy vegetable? From what
I hear, spinach is hard for your body to break down until you boil it
or at least steam it.
This actually explains why every time you see a cow, sheep or goat too, they're always munching on something!
I live in Ireland...
incredible informative!
Why does my grasshole have hair around it?
You need to shave/mow it.
`lmao just imagine trying to do that with a lawnmower
It's to catch those bits of sweetcorn you didn't chew properly the first time.
Dindleberrie
DONT EAT GRASS - HANK GREEN
"Hay is cheaper, grass is free; horses eat it, why can't we?" -little poem my Granddad taught me.
"Straw is cheaper, grass is free, buy a farm and get all three." -A poem my dad taught me to recite when someone says "hey" to me.
I wasn't going to watch this video but the title started making me chuckle because it read like someone was very, very upset that they couldn't eat grass
I should stop eating grass
Hollybird well not me i throw up my food alot and i chew on it even though i never evennconsumed grass
Short answer, we don't have enzymes which break down cellulose.
And this isn't even getting into the silicate that grass incorporates into its leaves. As you guys mentioned during the history of life videos, this is an innovation that grass came up with which makes chewing it basically like chewing sand.
Lifes burning questions.
Here's my question: if it were possible for us to digest the grass properly, how nutritious would it be? How much would a human need to eat to satisfy, let's say a 2,000 calorie/day requirement? Also, does it provide any vitamins/minerals? (possible solution to eating grass would be to grow a suitable organ for the proper cellulase producing microbes to thrive in, inserting it above the stomach)
Good question.
Repost it over and over so they'll answer it.
Yes, I think so. I know that grass such as wheat grass contains tons of nutrients. Supposedly, for human, one shot, or 2 oz, of wheatgrass juice (because we cannot digestive plain, unjuiced grass) contains more nutrients than 5 pounds of veggies and fruits...
Frosty.. That sounds like something was hyped up..
+FrostyWolfZ That's just a hyped food fad to sell you something that tastes horrific for an astonishing amount of money. Just eat a handful of raw broccoli or a fresh spinach salad and you would get just as much nutrients and vitamins if not more, plus the healthy fiber that wheatgrass juice doesn't have. There is no such thing as a "miracle food", just predatory companies and people making money off of gullible consumers desperate for an easy solution to a complex problem.
Yeah, I was going to say the same thing. It sounds like something that a Salesman from a natural food store would tell you.
Why would you want to eat like a cow when you could just eat the cow? lol. Much tastier!
agreed :D
Because PETA happened.
because meat consumption is so terrible for the body. But that would require some degree of self awareness.
What is the leading cause of death in the US and what is the cause?
Well, considering the fact that our stomachs don't have the enzymes to digest cellulose AND the fact that humans have a simple digestive tract which most closely resembles that of Carnivores, I'd have to say that is complete and utter bullshit.
There's also the fact that our bodies are highly dependent on saturated fats for many functions in the body (which mainly come from animal sources) as well as proteins. The protein synthesis that our bodies undergo are mostly compatible with animal proteins as those are the most easily digested and absorbed by the body.
Now, if you wanted to argue that the chemicals and hormones that they pump into our meat sources are terrible for you, then I'd agree with you vehemently. I also think animals should be raised in a healthier manner than spending their entire existence cooped up in some industrialized building living off of nothing but unhealthy grains and formula.
But ultimately, eating meat is better for you than living entirely off of vegetation as most of the nutrients in plants cannot be absorbed by the body again, due to our bodies' inability to break down cellulose.
Thanks for your response and passion.
Everything we need can be gotten from nuts and seeds far better than animal sources.
The issue is not about cellulose, that is fiber to us, and there are plenty of easy tricks to exposing the food. Cellulose is not a factor in digesting nuts and seeds, which has your saturated fats too!
Yes, the toxins from the meat are terrible, but the microbe and parasite risk is far worse.
And to the sensitive individual, the one who can perceive life as consciousness, the vibe is poor. Yes, Poor. Death consciousness is furtive and negative. Where living food awakens and quickens the spirit and mind..
Glad I watched this just before heading out for the weekly grocery shopping. I forgot the coupons last week for the grass fed cows butter but this video reminded me to put them in my purse which I did immediately before it slipped my mind again. :p
I knew the reason already, but I'm glad I learned a little bit more about it.
What happened to the Americans living in space?
We wanted to change a graphic that was confusing. It'll be back up on SciShow Space in a few minutes!
+SciShow just about to ask the same thing!
+Dudezement Penis pump
+dudezement try jelqing
+Doggy McDogeface Swedish Made
Graaaaaassss... tastes bad!
Hit the sack, jack!
Not the good grass
And that's the wayyy the news goes!
Uh-oh! Somersault jump!
AIDS!!
We eat grass seeds constantly; wheat, corn, rice, millet, rye, barley, sorghum...sugar cane is also grass.
Processed foods are basically heavily modified grass.
Really good video. I dunno how i searched for an answer but im glad I did
"Cows really do have it made"
*Chomps into hamburger*
There's A Pill you can take to Cure Lactose Intolerance???????? Omg I need to find that!
the things you learn from these videos hahaha
"Cows have it made" lol, best intro ever.
I use to eat dandelions when I was a little kid now that I remember. they taste like sour candy with a little less sugar. idk why i stop but watching this makes wanna go eat them again.
How can birds drink the same water they bathe, poop and pee in?
Bird brain
ronnie ssebaggala As in mind over matter?
birds don't pee :/
+*jr123* I'm no bird expert, but I'm almost certain they do. Their body has to have some mechanism of getting rid of toxins, excess water, and dead blood cells.
I suppose that all could be excreted with everything else, but at the very least they have kidneys.
jr123 Still tho.
what if you put the microbes in your mouth with some chewed grass and kept them in there for a couple of hours?
So you're basically asking for a cow to vomit inside your mouth and also you wanna keep the vomit in there for HOURS?!?!!
Don't tell me what to do
+Yout Tuka I love you.
Don't let your dreams be dreams!
Woah Gib wassup -Hof
what a great video
We do eat grass seeds and a lot of them. Rice, wheat, rye, barley, maize and so on are all grasses.
Oh god i cant digest grass? Okay gotta change my diet
DON’T EAT GRASS! Don’t eat grass.
Don’t- Eat- DON’T EAT GRASS.
For whatever reason whenever I see that thick, dark green, lush grass in a field, I want to munch on it. Only for a little bit, though.
Life is *not* made only of energy. There are many, many vitamins, enzymes, etc. that we need. Grass can do a *lot* for you.
You just crushed alot of vegans dreams just now. xD
You don't need to eat the grass directly... you can add cellulase and make sugar or bear from ground up grass or wood...
I was just about to say "Waw, no stupid vegan jokes under this video, finally we have evolved enough to go past this dad joke"....and then...then I saw your comment :c y bruh
@@aoeu256 agree, just eat those which eat grass. I'd call myself secondhand vegan.
or stop talking and just try it
@@purplemoon4874 lol the young shall grow, and you grow up too its just a joke.
I'm smoking grass right now
Nice
don't leave the cows out!
This is the prime of my reccomened section. I mean seriously. GRASS
You can just add the cellulase enzyme and a good ph to ground up grass, wood chips, and/or paper. Then after its done you can eat the "wood sugar", maybe, with yeast bacteria to turn some of the sugar to alcohol.
Could it be possible to genetically modify the microbes to be able to withstand the acid of our stomachs? Thus allowing us to eat grass?
In theory
Yea, absolutely.
According to the video the microbes withstand it already but they can't break down cellulose under acidic conditions. I fear that means you have to genetically modify chemistry.
Scott Baromski In that case, it'll be a good day for humanity when we can swallow some bacteria samples and then be able to eat the lawn.
Grass is very low on nutrition. So you would spend most of your day eating, just to keep from starvation. So why would you want to eat grass?
wait so vegans cry that we are herbivores and we are not suposed to eat meat?how come we cant digest grass but we can digest a nice fine steak?
Because vegans are idiots.
Because usually vegans are stupid and they try to come up with stupid bullshit like that to make people leave their loved ones(cows,chickens) alone,we are omnivores we aint herbivores and we will always eat meat and unlike a herbivore we can live on meat,they cant.
Those people are simply ignorant when it comes to human biology.
The thing is that Humans are actually omnivores: we have some plant digestion features which carnivores lack. We aren't specialized herbivores but we can process starch and gluten unlike carnivores. Indeed, most humans can live without meat, It doesn't mean we require grass and bark.
Do you take advice on how to treat heart conditions from a car mechanic? Then by all means, take advice on evolutionary anthropology from vegans.
'Leave the grass to the cows' sounds like a saying, it could mean 'do not waste time chasing things that are not use to you'
As a farmhand I confirm this! I work with dairy cattle and with pigs! If the grass is to short cut it is bad for the chambers in the stomack. If the grass is to long the stomacks cant process it enough. I dont have the english words for it but it is bad for the chambers her to. If they eat only straw they can not process it in what so ever so they die of starvation. Optimum is about 10 cm or 4 inches long grass!
Cause we are meat eaters that's why. Cows eat grass, we eat the cows, it's the circle of life. Hakuna Matata aeeeeee...
Tell that to my stake I just ate, we are not deers! Ask any doctor we are omnivores eating meat is part of our diet. It's not healthy to eat plants only or viable, the best way is to eat both animal products and plants. Not only that vegan only diet is bad for the environment. Save the earth, eat some meat!
Dude I read studies that confirm my claims, go and tell the inuit to stop eating meat. Why you vegans so ignorant, I agree we should eat more veggies, but eating only vegetables is not sustainable or healthy for us. The best diet is a balanced one, like Mediterranean diet or Japanese diet with a lot of oily fish. We need those animal fats and proteins. Yes you can survive on plants only, but you can't go full throttle on grass only.
It's not good for you to just eat vegetables and it's not good for you to just eat meat. What a surprise, just look at your teeth and it all makes perfect sense. Cows eat grass, humans eat cows and cats eat humans. Very simple!
You're a carnivore, huh? Well i guess scurvy ain't a thing and vegan diets can't be complete on all life stages. Lazy troll, 1/10
+Crispy Slick Animal products are never healthy? If animal products were unhealthy we wouldn't even be here because our ancestors ate meat regularly for convenient energy and nutrients. There were no plant-based diets before agriculture, deal with it. Plenty of species eat meat, they aren't dying off because of it
So what is the Wheat grass that I eat all the time in my green Shake?
35823582 its just young sprouted wheat or barley seed
Poking Master i answered the question what more am i supposed to do?
It seems that not even a channel like Scishow is safe from the memes
I live in rural Saskatchewan, everywhere I look, I see cows - to eat!
Can you do one on cerebral aneurysms? I had one rupture at 19 and would love to learn more!
So are wheat grass drinks pointless?
nope it's easier to digest so you can get more minerals than chewing.
Two cow-related videos in a week SciShow? I find it quite a-moo-sing.
....
FUCK OFF.
+jimjames, paul and tyrone aww don't be a bull-y.
I was literally just thinking about this
What would it take to make humans solar powered?
Like a plant?
we are solar powered, albeit indirectly.
You could say we are solar powered. Try living without sunlight for 2 years, your body would not enjoy it at all. Even not being able to see sunlight causes problems. This is noted in blind people, it throws your circadian rhythm out of wack which can screw with your bodily functions.
This comment section is so...interesting
Merged Zamasu phahahah to say least
Oh wow
Leave grass to the cows, and the cows to my plate.
Wait, if a cow can break down cellulose, could I feed cows paper, sawdust, pencil shavings, old clothes and cotton wool?
Looks as if we have a promising career in dairy farming ahead of us.
Together with 10% smaller cells.
Wasn't that the stereotype of goats in cartoons, that they ate just about everything.
Milk has to come from somewhere
I mean everywhere
MasterLagoz Yeah, goats eating tin cans, etc. was a standard trope. Funny!
then why do supermarkets sell wheatgrass?
AliceDeBois its just sprouted wheat seeds
Epic vid
2:18 there's the answer