Cita:
The most up to date science of species classification based on molecular genetics as well as morphological schemes indicates, that the domestic cat (felis silvestris catus - often only called felis catus) is one of four sub species of the species felis silvestris. Because domestication has largely influenced and grossly altered the domestic cat's food preference, to explore the truly natural diet of felis catus we should look to the diet of its ancestors: the European wildcat or forest cat (felis silvestris silvestris), the Asian steppe cat (felis silvestris ornata), and the African wildcat or tawny cat (felis silvestris lybica) [1.]
When examining the diet of these three subspecies, none include fish. If we further expand our investigation to include all species of the genus felis, we come to the realisation that only one of its members - the jungle cat (felis chaus) - includes fish in its diet, although still hunts predominantly rodent prey [2.] but none of the others do, including the black-footed cat (felis nigripes), the sand cat (felis margarita), and Chinese mountain cat (felis bleti) [3.]
..It seems that the idea of raw, whole fish is not entirely without problems. An enzyme found in all raw fish, called thiaminase, can destroy vitamin B-1 (Thiamin), leading to neurological disorders accompanied by a general physical wasting due to loss of appetite. [2] This enzyme can be destroyed by cooking the food, which however reduces overall nutritional density of the food itself as well.
Summary: care givers have to accept that no favour is done for the cat by feeding fish as a main staple.
Fish, no matter if whole, dressed, raw, cooked, or canned will cause nutritional deficiency of some kind, which in turn will eventually lead to serious disease.
If fish is to be included in the meal plan of the domestic cat, one may only do so sparingly as treats, or to entice a sick cat to eat. Other than that, the story of fish and cats shall remain a fairytale.
(* a large percentage of domestic shorthair cats raise by Feline Future without previous contact to fish as food, will not eat fish when presented with it experimentally)
La tiaminasa destruye la vitamina B, que entre otras cosas es indispensable para el metabolismo de la taurina, por lo que el pienso Orijen, sería doblemente peligroso, primero por tener nua taurina poco bidisponible, y segundo por tener tiaminasa y afectar a la vitamina B.
Cita:
El pescado crudo no es un buen alimento para los gatos, ya que contiene una sustancia, la tiaminasa, que destruye la vitamina B.