{"product_id":"vitamin-a-nutrition-in-domestic-cats-metabolism-and-toxicity-von-tammy-freytag","title":"Vitamin A Nutrition in Domestic Cats","description":"\u003cp\u003eVitamin A is essential for all vertebrates. Birth defects may occur with either deficiency or excess vitamin A. High levels of vitamin A occur in some commercial cat foods due to the use of liver. Toxicity, teratogenicity, and metabolism of vitamin A were the focus of the research. The first objective was to define a safe upper level of vitamin A for cats during gestation. It was demonstrated that a high level of vitamin A added to the diets had potential to cause birth defects in the kittens, but not toxicity in the queen. The second study examined chronic vitamin A toxicity in female cats. It was found that cats in this study consumed far more vitamin A per kg body weight and had fewer signs of toxicity than reported cases in other species. A tracer was used to investigate whether cats given diets with high levels of vitamin A had the ability to safely metabolize excess vitamin A. Cats given a high vitamin A diet were able to efficiently remove it from plasma. Pet food manufacturers should find this information useful for formulating healthy cat foods for both gestating queens and adult cats.\u003c\/p\u003e\u003cdiv class=\"aw-variant-hidden-subtitle-div\" id=\"aw-variant-subtitle-9783838304977\"\u003e\u003ch3\u003eMetabolism and Toxicity\u003c\/h3\u003e\u003c\/div\u003e","brand":"Libri","offers":[{"title":"Softcover - 9783838304977","offer_id":39447222190173,"sku":"9783838304977","price":59.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0622\/files\/866db283-aeaf-4f47-8d11-523e2d556447.jpg?v=1770703207","url":"https:\/\/shop.autorenwelt.de\/products\/vitamin-a-nutrition-in-domestic-cats-metabolism-and-toxicity-von-tammy-freytag","provider":"Autorenwelt Shop","version":"1.0","type":"link"}