This test method is a titrimetric method used to determine the free fatty acid (FFA) content in animal feed. Oil is extracted from the feed sample prior to a titration to determine the free fatty acid content. It is a key quality control measure, as elevated FFA levels can indicate hydrolytic rancidity, degradation, or poor… Continue reading Free Fatty Acids [Feed]
This test method uses static headspace gas chromatography with flame ionization detection (GC–FID) to measure fusel alcohols—higher-chain alcohols produced during fermentation. The measurement of fusel alcohols is important for quality control, regulatory compliance, and detecting potential adulteration or off-spec fermentation. This test method identifies isopropanol, N-propanol, isobutanol, isoamyl alcohol, and N-amyl alcohol.
This test method is a cross-method calculation involving total digestible nutrients, net energy for lactation, net energy for maintenance, net energy for gain, digestible energy, and metabolizable energy analyses.
This test method is a cross-method calculation involving digestible energy and metabolizable energy analyses.
This test method is a standardized microbiological procedure for the detection and enumeration of Enterobacteriaceae in food and environmental samples. This method utilizes selective culture media and incubation conditions to isolate and quantify members of this important bacterial family.
This test method is a gas chromatography (GC-FID)-based procedure for the quantitative determination of cis-, trans-, saturated, monounsaturated, and polyunsaturated fatty acids in vegetable oils and non-ruminant animal fats. This method enables detailed fatty acid profiling critical for nutritional labeling, product formulation, and quality control.
This test method is a gravimetric method used to determine crude fiber content in oilseed meals, animal feeds, and related agricultural products. Crude fiber consists of the indigestible portion of plant material, primarily cellulose and lignin, remaining after digestion with dilute acid and alkali.
This test method is a gravimetric method used to determine the crude fiber content in oilseed byproducts, such as soybean meal, cottonseed meal, canola meal, and other plant-based feed materials. Crude fiber represents the indigestible portion of the sample that remains after chemical digestion, primarily composed of cellulose and lignin, but excluding more soluble fiber… Continue reading Crude Fiber [Oilseed Byproducts]
This test method is an official method for determining nitrogen and/or crude protein content in animal feed and feed ingredients using the combustion method (also known as the Dumas method). It is a rapid alternative to the traditional Kjeldahl method, relying on high-temperature combustion to convert nitrogen compounds into measurable nitrogen gas.
This test method is a classical Kjeldahl-based method for determining crude protein content in animal feed and feed ingredients. It is based on the quantification of total nitrogen in a sample, which is then converted to protein using a standard factor. This method is widely accepted and used in regulatory, quality control, and research settings.