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Soybean products are widely used in animal feeds. These are solvent extracted or mechanically pressed soybean meal and various methods of heat processed fullfat soybeans. Soybean protein concentrates may be occasionally used in specially prepared feed formulas. Identification of soybean products in a feed is generally made by the characteristics of the hulls and hilum [...]
There are several varieties of corn (Zea mays). The yellow varieties of flint or dent corn are almost exclusively used as animal feed in Asian region; however, the white varieties are used in some locations Ground corn and corn gluten are commonly used in formula feeds.
Microscopic Features
1. The corm kernel is tooth-shaped and covered with [...]
The microscopic identification of feed ingredients or adulterants is based upon relating the characteristics seen to known materials. The skill of a feed microscopist is determined by the ability to identify the feed constituents observed. In general, there two key methods of identifying feed components.
Fish meal is produced by either wet rendering or dry-rendering. Most fish meal used in animal feeds is manufactured by the wet method where the fish are cooked with steam under pressure, subsequently pressed to remove most of the oil and some of the water, and then dried to a moisture content of 6 – [...]
Animal production industries as well as aquaculture play an increasingly important role in modern agriculture and contribute a substantially increasing portion of protein needed by the human population. Each year, more species are studied and cultured, more products and by-products are marketed. The related activities supporting the production, particularly in the formula feed industry, are [...]