Appetite is largely governed by energy intake and gut fill but can be significantly affected by individual animal tendencies and how tasty the food being offered is. Each animal has a maintenance requirement which is the energy necessary for all the resting bodily functions such as the beating of a heart and the constant action of nerve and muscle fibres. Above this is the requirement for voluntary activity such as running and playing. Every animal has its own rate and efficiency of use for these activities which makes it impossible to create a reliable formula for food requirement. Dogs (and cats to a lesser extent) will eat excessively simply because the food tastes good, a phenomena which gave rise to pet food advertising with statements like "eight out of ten cats prefer it" and the counter advertisement by hills science diet which states below a large photograph of sweets and ice cream that "eight out of ten children may prefer it".
Types of food vary enormously but can be broken down into those which which are 'complete', or those which form only a part of a diet such as 'mixer' biscuits. Complete feeds provide all the necessary nutrients discussed below and do not require any additional food provision. Food may also be dry or moist. Traditional feeding was typically based on a canned moist food with mixer biscuits. Many of the earlier dry feeds were poorly balanced and particularly in cats, predisposed them to kidney failure and other problems. Dry foods are now much improved and many reputable manufacturers provide dry or moist equivalents of the same food brand, the only difference being the moisture content. It is always very important when giving a dry diet to provide adequate fresh water as the requirement is not present in feed. Cystitis can be a problem even in the best balanced dry food if water intake is inadequate. Dry or crunchy foods also have a significant benefit on cleaning a pets teeth and indeed specific diets such as Hills 'T/d' are available for this purpose.
Feeding Regime The feeding regime is how much and how often our pets are fed. There is an established pattern to feed dogs and cats once daily, but there is little good reason to follow this and indeed twice daily feeding has many benefits. More regular salivation improves dental hygiene, smaller meals are easier to digest, and more frequent feeding reduces boredom and begging problems. Of significant importance in deep chested and large breed of dog is the prevention of gastric bloat and torsion which can be induced by large meals, particularly if followed by exercise. Gastric bloat and torsion is a life threatening emergency requiring immediate veterinary intervention.
Bones and chews. Vets will almost always advise that bones and often chews are avoided due to frequent problems when large fragments are swallowed. These can obstruct and even perforate the bowel. However, there are benefits with these, particularly to dental health, and some dogs can tolerate large bones very well. Chews such as Rasks, Royal Canin's Mini Oral Bar and CET chews are a much safer option. Always consult your own veterinary surgeon before giving bones to a pet. Never give poultry bones, as these often produce sharp fragments when chewed.
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