title: [Nitrogen metabolism of broilers fed 15-N labeled wheat.5. Skin, feathers and 15-N balance].
abstract: In the present study 17 four-week-old broilers received a ration supplemented with 15N labelled wheat for a period of 2 days. The 15N excess was 295mg. 3 birds each were killed 3, 6, 12, 60 and 108 hours after administration of the last 15N dose. The present communication provides data on the N and 15N content of the bone skin, feathers and data on the 15N balance. On an average, 11% of the amount of 15N administered were found in medullar bones. A fairly uniform pattern of 15N labelling was observed at the different test points of the skin while the time pattern of 15N frequencies in the feathers was non-directional. 15N' balance showed that at all the 6 test point the range of error for the recovery rates was less than 3%. The present study substantiated the suitability of the stable N isotope for use in N metabolism trials.
mesh_terms: D000821:Animal Feed; D000818:Animals; D002645:Chickens / Q000378:metabolism*; D005241:Feathers / Q000032:analysis*; D009584:Nitrogen / Q000378:metabolism*; D009587:Nitrogen Isotopes; D012867:Skin / Q000032:analysis*; D014908:Triticum
chemical_list: D009587:Nitrogen Isotopes; D009584:Nitrogen
vernacular_title: Untersuchungen zum N-Stoffwechsel des Broilers mit 15N-markiertem Weizen. 5. Mitteilung. Knochen, Haut, Federn und 15N-Bilanz