title: [The efficiency of and requirements for selected amino acids in growing female pigs. 3. Threonine].
abstract: With the help of an N utilization model by Gebhardt (1963) and its further development the threonine efficiency coefficients (kThr) of wheat, barley, maize, rye and peanut oil meal of different charges with a supply of L-lysine monohydrochloride, DL-methionine and DL-tryptophan was ascertained with a total of 59 female pigs of the local breed (35-45 kg live weight) by means of an N balance method. The variation range of kThr was between 0.61 and 0.87 based on a threonine effectivity of wheat gluten with lysine as standard. The derived threonine requirement for 100 g daily protein retention with a live weight of 40 kg was ascertained as 6.9 g (kThr = 1) and 9.6 kg (kThr = 0.71 as mean values of the protein sources studied). The proof of threonine limitation in the protein sources was provided by the supplementation of DL threonine.
mesh_terms: D000596:Amino Acids / Q000378:metabolism; D000821:Animal Feed; D000818:Animals; D010367:Arachis; D004044:Dietary Proteins / Q000378:metabolism; D005260:Female; D005983:Glutens / Q000378:metabolism; D001467:Hordeum; D009584:Nitrogen / Q000378:metabolism; D012434:Secale; D013552:Swine / Q000378:metabolism*; D013912:Threonine / Q000378:metabolism*; D014908:Triticum; D003313:Zea mays
chemical_list: D000596:Amino Acids; D004044:Dietary Proteins; D013912:Threonine; D005983:Glutens; D009584:Nitrogen
vernacular_title: Ergebnisse zur Wirksamkeit und zum Bedarf an ausgewählten Aminosäuren beim wachsenden weiblichen Schwein. 3. Mitteilung. Threonin.