Your local feedstore or your local large animal veterinarian.
Absolutely nothing.
One is good enough.
No they are very painless solutions to make sure that no metal every passes past the reticulo-rumen.
Yes. Most cow magnets can weigh around a pound or two each, but often never exceed three.
Cows don't have "built in magnets." Magnets are inserted down the throat of a cow as a way to prevent her from getting hardware disease from eating too much scrap metal like nails and wire. The magnet in a cow works exactly the same as any "normal" magnet does.
Some cows have magnets inside their stomachs! The magnets attract any metal that the cow might accidently eat, which would harm or kill the cow if it passed through the digestive system. A cow can keep a magnet inside the stomach for it's entire life without harm.
Their diet I suppose. The Cow is strictly herbaceous, while the Tiger is carnivorous by nature. On the Lighter Side: * It is oh so much easier to milk a cow than a tiger. * The answer becomes apparent when you walk up behind each and twist their tails * Cows are omnivorous (and none too bright). They invented cow magnets (Magnets with a rope on them that you feed into the mouth end of the cow) to pull the bits of barbed wire and old Chevys out of their innards. * There is a certain cachet of using "Tiger" in your team or sports name name that cows do not exhibit - for example would anyone go to see the Detroit Cows? or watch Cow Woods golf?
They are used to prevent any metal objects from penetrating the reticuloruminal lining. If any sharp objects (like nails and wire) do penetrate the stomach wall, this will invite infection and cause the cow to get extremely ill. Magnets are only used for those cows that are fed feed that tends to have a lot of metal junk in it, or are grazed in pastures with lots of metal junk in it. For cows that are grazed in clean pastures and are given clean hay, silage and straw, magnets are not necessary.
Chickens, Peacocks, hummingbirds, pigeons, cows, horses, duck, platapus, walrus, seals, and narwalls.- One of them is the cow.-Hershey-Bull
Chickens, Peacocks, hummingbirds, pigeons, cows, horses, duck, platapus, walrus, seals, and narwalls.- One of them is the cow.-Hershey-Bull
Go to your vet, buy a bolus-pill plunger and a pack of bolus magnets (some call them cow magnets). Restrain the cow, put the magnet pill in the plunger, open the cows' mouth, put the plunger at the back of the cows' throat, and pop the pill in. The magnet will stay in the cow's reticulum (the "hardware" stomach where bits of metal and string accumulate), picking up the nail she just ate as well as other things she ate by accident. The magnet will help keep the hardware from puncturing her stomach, causing infection and a malady known as "Hardware Disease."
Some migratory birds have some magnetic sense, now believed to respond to changes in field strength rather than N-S. Some farmers used to feed magnets to cows. They would stay inside the bottom of the cows stomachs. (they have 4 of them). If the cow ate a nail or barbed wire, it would be trapped and not pass through the rest of the cow digestive tract. eD