Nutrients for cats provides nourishment for your kitty, this includes macromolecules (large molecules) such as proteins, carbohydrates, and lipids and micronutrients such as vitamins, minerals and water. These types of nutrients are the same for humans and other mammals like dogs. Dogs are omnivores like us (both meat and vegetable eaters). This is why dogs throughout the ages have eaten scraps from the dinner table. Because of this people think that they can also feed scraps to cats, but this is very wrong.
The metabolism of cats is very different than dogs and humans. Cats have dietary requirements that are specifically feline. Cats are carnivores (meat eaters), they must have meat to maintain good health. Some humans who are vegetarians might prefer that their pets also be vegetarians. Dogs can, cats cannot. That is just the way Mother Nature intended cats to be, meat eaters! Cats that have a vegetarian diet can become very sick. This is because a vegetarian diet lacks certain amino acids (building blocks of proteins) that are only found in meat.
Taurine is one of those essential amino acids that cats need. Taurine is absent in plants. Taurine deficiency will cause blindness and heart problems in cats. Cats are carnivores so they must have meat protein to maintain good vision and heart function. Go to this link for a very detailed and comprehensive article on
feeding your cat written by Lisa A Pierson, DVM. She also provides her
cat food recipe which she uses in her clinic to treat cat obesity. She feeds her cat what she considers a "species-appropriate diet consisting of raw meats (chicken and rabbit), finely ground bones, and organs using a properly balanced recipe." She and many others have switched to a carnivorous diet for their cats. If you are interested in switching your cat to a total raw meat diet these following sites will be very helpful in guiding you.
Raw Fed Cats
For Commercial cat foods I have researched and come up with some of the best cat foods, both dry and canned. These are considered to have the most protein with less grain and meat by products. You might be surprised that "Fancy Feast Flaked Ocean Fish Feast Gourmet Cat Food 3 oz." is considered a very good cat food high in protein. One of the best commercial cat foods are "Wellness Cat Core" (both dry and canned)which has grain free formulas that contains no meat by-products, wheat, soy, dairy, corn or corn gluten, artificial flavors, preservatives or colors.
In nutrients for cats, another big difference between cats and dogs is that cats require more fat (lipids) than dogs. Studies have indicated that kittens need a diet consisting of more than 30% fat. This is why kitten food has so much more fat than adult cat food. Not only do cats need more lipids than dogs but this fat must be in the form of animal fat. Plant and animal fats are very different. Animal fats are much more saturated than plant fats. I know you are probably thinking that this is unhealthy, well to humans yes. The metabolism of carnivores is much different than ours. Nutrients for cats require much higher animal protein and animal fat in their diets.