Cows also drink green tea in Shizuoka! What is the effect?

study summary

What disturbs me this time is that giving dairy cows green tea increases milk production! It was Shizuoka Prefectural Research Institute of Livestock Technology that conducted the research.

We interviewed Mr. Takahiro Seto, who is in charge of part of the research.

Born in Fujimiya City, Shizuoka Prefecture, he was in his current position after earning a doctor’s degree (veterinary medicine) from Hokkaido University.

Chida

What kind of research is this?
To put it simply, I verified.

Seto

The research was conducted for two years, the first year by Mr. Seto’s juniors and Mr. Seto in charge of the second year.

During the first year, he asserted whether the cows drank tea in the first place and that drinking tea did not affect their health.

The first year experiment showed that cows were eating green tea without any problems, so in the second year, they conducted a long-term three-month trial to see how it affects milk yield, etc.

Why did you decide to give your cow green tea?

Chida

Why did you decide to give your cow green tea in the first place?
The problem is we want to expand the availability of tea.
For dairy farmers, increased milk production leads to increased income. It all starts with the idea that giving tea can have a positive effect.

Seto

Chida

Catkin and tea contain ingredients that are believed to be good for the body.
I agree. There are different tensions for dairy cows. Higher stress leads to reduced milk yield.
It is expected that the ingredients of the tea will be effective against stress.

Seto

Green tea to relieve stress!

However, that became apparent after the test.

Research process

Chida

The cow drinks tea and is bitter! Too good! Did you react like that?
Nothing like that (laughs)
However, in the first year trial, cows were given water for about 2 hours after milking.

Seto

A cow actually drank tea at the time of the experiment.

Chida

I love beef and green tea!
Isn’t it too hot to drink? Are you cold? ??
Since I couldn’t cool the hot tea in place, I decided to water it in the first place.
2.5 grams of tea leaves are added to 1 liter of water and extracted for 1 hour.

Seto

Chida

Right. It’s running water, isn’t it?

Once, I accidentally extracted it with warm water.
After that I did not drink any cows.

Seto

Chida

Open!
With lukewarm water, the ingredients of the tea secrete more, and it sounds insane.
Right. When extracting tea with water, it is difficult to separate tannins and caffeine, which are astringent and bitter ingredients, but extract many amino acids.

Seto

Chida

He said he doesn’t drink cows because warm water will be astringent and bitter.
By the way, does cow get sick or have diarrhea from drinking green tea?
That is not the case. We also did a first year blood test to confirm that.

Seto

Chida

Ah it is. Summary,

  • Drink more tea than water
  • Drinking tea has no obvious negative effects on cows

That would be the case.

Status for green tea at the time of the experiment

Chida
That’s the problem.
In short, in the second year long-term salary test,
It is said that there is a close relationship between water consumption and milk intake. It is thought that the increase in milk production is due to the high consumption of water.

Seto

Chida

You drink a lot, so you can serve a lot.
What was the stress reduction effect you originally envisioned?
In that respect, I had a blood test on my second year test. Unfortunately, however, the effect was not recognized with the amount of tea consumed this time.

Seto

Chida

Ah it is. So there seems to be something different about the cows that drink tea.
How about the cost of converting water into tea?
Since we are conducting research on the assumption that it will actually be used in the field, we are also calculating that score.
From the conclusion, the “income” with the costs would be an additional 141 yen per child per day. Was.

Seto

* Based on feed costs at the time of the study.

Chida

Is it 5,640 yen per day? ??
Rub! !!
However, in an environment that is too hot and cows are over-pressed,
It is known that there is no difference between water and green tea because cows drink a lot of water regardless of tea or water.
Therefore, it should be noted that not every day has positive effects. Instead, it can negatively affect the tea when it is too hot.

Seto

Chida

Point to be careful

  • Water out
  • If it’s too hot, it’s no different than water

That is it.

If you change from water to tea, 40 animals add 2 million yen a year … It’s a word of power.

Delicious beef should drink tea! ??

Chida

No stress-relieving effects (at trial drink) were observed with water tea.
But I drink more tea than water.
Breastfeeding a lot should be reflux.
So why do cows drink more water from the tea?
Undefined reason.
However, the hypothesis is that “the cows like the taste of watered green tea”.
There is much more to say.
Hence, I don’t think it will be effective under a lot of astringent and astringent properties.

Seto

Chida

That means cows drink more than water because they see the delicious taste of green tea? Ah it is.
On overseas dairy farms, safe water cannot be obtained in some places.
So I thought about “how do people drink unsuitable water to drink”.

Seto

Chida

The amount of milk is proportional to the amount of water you drink, so you know how to mix water for everyone.
The situation is different from Japan.
Right. In Japan, drinking water is readily available, so there’s no need to “force everyone to drink water.”
However, I realize the importance of this research.

Seto

Chida

The dairy farmer is making a lot of effort and effort,

There’s still room for that.

Laboratory where a very good environment is maintained thanks to the barn manager

next rollout

Chida

It is said that the research at the lab has been completed. Is there any example of a showcase at the venue?
I can’t tell you the details yet, but a local tea plantation and a dairy farmer are working together.

Seto

Chida

Does that mean it’s as beneficial as a teahouse?
Tea leaves used for this mechanism are called “powders”, which are always produced in the production process and have a low commercial value.
If it sells for the price at the time of the study, the teahouse is profitable.

Seto

Chida

Dairy farmers can make a total profit even if they buy at that price.
No one loses! is not it! !!

Summary

I can’t believe a cow drinks tea.

However, in fact, I prefer to drink filtered green tea over water, and as a result milk yield increases.

Also, it’s surprising as it will be a plus for the teahouse.

It is said that no negative effects on livestock from drinking tea have been confirmed, so it could be a good research outcome for both dairy farmers and teahouses.

In addition, it has never existed in the dairy industry until now.

I really look forward to seeing how this new perspective will be applied in the future!

If you are interested, please visit Shizuoka Prefectural Research Institute of Livestock Technology!
Curator: Mr. Seto
communications:
Email takahiro1_seto@pref.shizuoka.lg.jp
Phone 0544-52-0146