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Your dog is what it eats ?
Why a dry diet is crap
Allow me to clarify as I feel it is of great importance in the understanding of how YOUR doggy actually works . The body contains over 100,000 proteins that function in a number of capacities. Structural proteins are found in connective tissue, bone, and muscle, while functional proteins are components of hormones, antibodies, enzymes, contractile proteins, and membrane transport proteins. The primary requirement for protein is driven to ensure that sufficient amino acids are present and available to produce and maintain these structural and functions proteins. In fact, it is more accurate to discuss protein requirement in terms of amino acid requirement Dietary protein sources must be readily digested by the dog. The quality of the protein source must be sufficient to maintain body tissues. Protein quality is based on the type and amount of essential amino acids contained in the protein source. Protein quality is estimated by determining its biological value, which is the percentage of amino acids absorbed and retained by the body for maintenance of tissues. Two main sources of dietary protein are animal-based proteins and plant-based (grains) proteins. Although cereal proteins are a common component in commercial canine rations, these materials can have a low biological value because of low content of certain amino acids. In general, high-quality protein materials derived from animal sources provide superior digestibility, amino acid balance, and palatability. Because proteins from animal tissues are more digestible and contain a higher percentage of essential amino acids, these materials generally result in a higher biological value compared to cereal protein sources. Because of the higher biological value of animal protein, a smaller portion of the diet can be fed. Energy sources are presented in the form of carbohydrates, proteins, and fats. While each of these energy sources are not essential (required) for dogs, they are in a sense required to maximize the performance of a dog. Protein and fat, which are essential, are much easier to discuss in terms of needs and benefits. Carbohydrates, which dogs do not have a true requirement, are more difficult.

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