Turns out cows can be potty trained as easily as toddlers. Maybe easier.
It is no bull. Scientists put the task to the test and 11 out of 16 cows learned to use the “MooLoo” when they had to go.
Just like some parents, the researchers used a sweet treat to coax the cows to push through a gate and urinate in a special pen, and it took only 15 days to train the young calves.
Photo: AFP / RESEARCH INSTITUTE FOR FARM ANIMAL BIOLOGY
Some children take longer.
“The cows are at least as good as children, age 2 to 4 years, at least as quick,” said study senior author Lindsay Matthews, an animal behavioral scientist at New Zealand’s University of Auckland who worked with colleagues on the tests at an indoor animal research laboratory in Germany.
What started with a half-in-jest question on a New Zealand radio talk show about the very real problem of livestock waste resulted in a serious study published on Monday in the journal Current Biology.
It was not just a “wow, this could be fun” academic question. Massive amounts of urine waste is a serious environmental issue, Matthews said.
Urine contains nitrogen, which when mixed with feces becomes ammonia, which is an environmental issue due to acid rain and other problems, Matthews said.
It can also taint the water with nitrates and create the airborne pollutant nitrous oxide, he said.
And cows do pee a lot. A single cow can produce about 30 liters of urine a day, Matthews said.
“I am not surprised they can train calves to urinate in set locations, but I am surprised no one has demonstrated this before,” said Duke University animal cognition scientist Brian Hare, who was not part of the research. “The critical question is can it and will it scale?”
At the laboratory in Dummerstorf, Germany, the researchers mimicked a toddler’s training, putting the cows in the special pen, waiting until they urinated and then giving them a reward — a sweet liquid of mostly molasses.
Cows do have a sweet tooth, Matthews said.
If the cows urinated outside the MooLoo after the initial training, they got a squirt of cold water.
Then in two sets of experiments, the researchers let the Holstein cows roam about the indoor facility. When they had to urinate, 11 of them pushed into the pen, did their business, and got their sweet reward.
However, there were a couple of caveats to the experiment.
No. 1, they gave diuretics to the cattle to get them to urinate more because they had limited time to run the experiments under ethics guidelines.
And No. 2, they did not do No. 2. They only trained cows to use the MooLoo to urinate, not defecate.
Urine is a bigger problem, at least in Europe, Matthews said, but he predicted that they could train cows to poop in a certain place, too.
The biggest environmental problem for livestock, though, is the heat-trapping methane they emit in belches and flatulence, a significant source of global warming.
The cows cannot be trained not to belch or fart, Matthews said.
“They would blow up,” he said.
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