1.Check the color of pet food
The color of pet food can reflect the type and structure of the raw materials of pet food. Dogs are omnivorous animals based on meat, so the color of high-quality dog food should reflect the color of meat. The meat will show a kind of brown or dark brown under high-temperature puffing process by pet food extruder machine https://www.zenopelletmachine.com/product/pet-food-extruder-for-sale/ . so dog food with more meat content will be darker than food with less content.Pet food made by pure chicken shows another situation, good chicken powder is lighter in color because it is pure chicken meat and does not contain by-products such as chicken bones and chicken internal organs. Therefore, pet food made from pure chicken will have a lighter color. In addition, the current industrial technology of pet food is very advanced, adding some pigments can imitate the color of meat, so it is difficult to judge the quality of pet food based on color alone.
When buying dog food, check the external color is necessary, and try to look carefully from the appearance to see if there is any mildew and deterioration. As for the beauty of the color of the dog food itself is really not important. Therefore, the general belief that good food must be dark and light-colored dog food must be bad is not good method.

2. Check the shape of pet food
Many pet owner like to look at the shape, size, rules and regularity of dry puffed dog food pellets when choosing food for their pets.They judge the quality of dog food according to those rules. which is also incorrect. Dog food is manufactured through a series of deep processing procedures by dog food production line https://www.zenopelletmachine.com/product/pet-food-production-line/ . It belongs to industrialized mass production. The important step is puffing. Puffing is the variation caused by the water rushing out of the particles instantly, so it is relatively random.
If there are real meat ingredients, the meat will shrink under the high temperature, it is difficult to make every particle of the dog food exactly the same. Theoretically speaking, the shape control ability of plants such as corn, starch, soybeans, and flour is much greater than meat. On the contrary, the more starch, the easier control of shape .
In short, by observing the uniformity of the shape, size and specification of dog food pellets, there is a bit right, which can reflect the manufacturer's ability to control the pet food pelleting process, and reflect the scale of the enterprise on the side. Normally, just grab a handful of pet food in your hand and the food size is basically uniform at a glance, and the appearance and shape are basically the same. That will be good for pet food.To overemphasize that all food are completely in the same shape and size, that will be hard for manufacturing.

3. Check the surface of pet food
Dog food is a combination of meat and many other raw materials. It contains a lot of meat tissue fibers. Crushing is necessary in feed production line https://www.zenopelletmachine.com/ . However, many pet owner request that the surface of the pet food should be delicate. The more delicate the better, this is a very incorrect view.
First of all, dogs or cat do not like to eat too delicate food, and many times pet owner like to soak dog food in water and then feed it to their pets,it will become very sticky, this is the biggest trouble for dogs in eating, dog would rather eat harder foods than give them soft, sticky foods. Excessively delicate food can also affect the palatability of dogs.
Therefore, dog food does not need to be very delicate. The rough surface is precisely the traces by the fibrous material of the meat. On the contrary, the dog food pellet with a strong sense of roughness have a lot of meat content. If the dog food with a large amount of vegetable starch and coupled with special food additives,it will make the surface very smooth of the dog food , Generally, the surface of high-quality dog food particles is neither too rough nor very delicate. It is normal for some small bumps to be felt.

4. Check the smell of pet food
Many pet owner choose pet food and dog food for their pets, they like to smell it first. It’s normal and necessary. This is the normal habit of human beings when dealing with food, but don’t judge it by your their own noses.We all know that dogs’ sense of smell is more than 40 times of humans, and they can distinguish the most important odors, they are more sensitive to acidic substances. Therefore, pet dogs have different preferences for food odors. Humans prefer to smell the fragrant or milky taste, but dogs are different. Dogs prefer the smell of meat and fishy taste.
Some dog food manufacturer understand the preferences of human beings, so they formulated into a fragrant milk flavor or other flavors through various synthetic flavors. They do not know this kind of taste is not good to dogs. Therefore, the palatability of the dog is greatly affected and the pet's love for food is reduced.
When choosing pet food and dog food, it is necessary to smell it. You can judge the freshness of the dog food. If there is a taste of fat oxidation and rancidity, that is the smell of oil, he food is not very fresh, do not choose it. A good dog food tastes normal light meat or fishy , the aroma is natural and not strong.
In short, try to choose some dog food with balanced nutrition, true and clear labeling, clear ingredient content, and higher freshness. Only in this way bring a healthy life to your pet.