Mooney (2010) found that in all cases the concentration of vitamins in extruded petfood exiting the extruder and dryer were lower than target levels. ![]() In their review of the extrusion process, Björck and Asp (1983) noted significant loss of the heat-labile vitamins B1, B5, B12 and C in dry food. Dry food is subjected to heat of at least 120☌ for 30 minutes during the extrusion process and studies repeatedly show this process positively obliterates vitamin content (Björck and Asp 1983, Killeit 1994, Hoffmann LaRoche and Nutley 1995, Mooney 2010). (2006) found significant losses of (>33%) of the heat liable vitamins retinol, vitamin C, folate and thiamin during cooking food at just 100☌. It’s why you always see many of these vitamins added in large amounts to dry dog food which has been positively pulverised with heat (121✬) and pressure for 30mins. Lešková et al. Anything from 40✬ really but by 70✬ they start to diminish rapidly. They hate everything, air, light but particularly heat. For example, there are the water-soluble and thus heat liable vitamins such as B complex (including thiamine, niacin, riboflavin and folic acid) as well as vitamin C. Most is not all raw dog food manufacturers are very aware what heat will do to the nutrient content of food. To explain why extrusion cooking destroys the nutrient content of food, here are a few paragraphs from my forthcoming book: Unfortunately, as you would expect, this sort of cooking obliterates the good stuff. Moreover, you can use highly contaminated material such as stale wheat and rank meat ingredients and their “badness” will be cooked away. It’s very quick and makes the most material in an hour. Why is petfood normally produced this way? Lots of reasons, all to do with cost. All the ingredients are mixed together under high pressure and very high temperatures (usually 121✬ for half an hour). Pet food extrusion cooking is very different. RawDry in Ireland, for example, make fantastic dehydrated Irish meat treats for pets, easily the best quality treat on the Irish market. Many of us now have little machines for this in our homes for making treats and other smaller scale industries. What are the Differences Between Dehydrating and Freeze-Drying?ĭehydrating is a process of using just air (and thus water) removal. It is the favoured way soldier and astronaut rations are produced. The remaining very dry food is then nitrogen sealed for storage to prevent contamination from water or oxygen. There is then a secondary drying step whereby any remaining water molecules are removed under slightly higher temperatures. The frozen water crystals evaporate directly from ice to water vapour in a process called sublimation. The food is placed in a vacuum chamber under very low heat and brought down to temperature. We have known this for millenia with early farmers air drying many items before storage, adding salt in later years (which further dessicates the area, thin-skinned baddies don’t like salt for that very reason).įreeze-drying is a three-step process that begins with freezing. Remove the water and baddies cannot thrive. If food contains water baddies can grow on it. Enter Jen’s new concept – freeze dried raw dog food. This means there is a massive gap in the market for a dry-but-still-raw dog food. And some just won’t make the leap to a raw dog food product because of all the scares put into them by the dry food propaganda machine. The Complete Pet Company makes great organic and ethical-as-possible raw dog food products but, as most of us realise, sometimes raw can be a bit messy (travelling, storage, bit of handling etc). This dog food was not to be just any old dog food, it was created with an ethical stand against Factory Farming, using high grade, good quality ingredients to create a dog food that was not only delicious and nutritious but based on what nature intended. Three women had a vision, to create and manufacture the best raw, organic, natural, free-range dog food on the market. If you got to eat meat, that’s where I want them living. ![]() Honestly, her turkeys come from farms where they sleep in trees and music is played to them. Her solution was to create a raw dog food based on ingredients that were hopping about in the open air. Like myself, Jen struggles emotionally with balancing the needs of her dogs with the ethical treatment of meat animals. ![]() Jen is a staunch believer in animal rights. I met Jen when I was speaking at Turrid Rugas’s Dog Symposium in Norway in 2015.
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