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By Robert Blair

This booklet offers recommendation and directions on how applicable diets will be formulated and the way feeding programmes will be built-in into an natural chook creation approach. the themes contain the goals and rules of natural chook creation, components of fowl food, licensed parts for natural diets, diets for natural fowl construction, selecting the best bird breed and pressure, integrating feeding Read more...

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Soils vary, however, in their content of trace minerals, and plants vary in their uptake of minerals. Consequently, feedstuffs grown in certain geographic areas may be marginal or deficient in specific elements. Thus, poultry diets usually require supplementation to ensure an adequate intake of trace minerals. Mineral salts used as feed supplements are not usually pure compounds but contain variable amounts of other minerals. Of the essential mineral elements, those likely to be deficient in poultry diets are calcium, phosphorus, sodium, copper, iodine, manganese, selenium and zinc.

1. Digestive system of the chicken. ) Mouth Digestion begins here. Saliva produced by the salivary glands moistens the dry feed so that it is easier to swallow. At this point the feed, if accepted, is swallowed whole. The feed then passes quickly to a pouch in the oesophagus, the crop. Crop This is a storage organ from which feed can be metered into the lower oesophagus for passage into the next section of the gut, the proventriculus. There is only minimal amylase activity in the saliva and crop, indicating little digestion of carbohydrates in this organ.

Summary of characteristics of fat-soluble and water-soluble vitamins. Fat-soluble Water-soluble Chemical composition Occurrence in feeds C, H, O only Provitamins or precursors may be present Function Excretion Specific roles in structural units. Exist as several similar compounds Absorbed with fats Substantial; primarily in liver, adipose tissue; not found in all tissues Faecal (exclusively) Importance in diet Grouping All animals A, D, E, K C, H, O + N, S and Co No precursors known (except tryptophan can be converted to niacin) Energy transfer; all are required in all cells, as coenzymes.

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