Effects of supplemental protein sources during the grazing period on performance, ruminal characteristics and blood constituents in early weaned growing Wagyu steer calves

Autor:	Masahito Sugimoto, Yukinobu Sato, Cizuru Yayota, Syuji Kuzuoka
Rok vydání:	2003
Předmět:	Rumen Animal science Withers Soybean meal Grazing Hay A protein General Medicine Corn gluten meal Biology General Agricultural and Biological Sciences Ammonia nitrogen
Zdroj:	Animal Science Journal. 74:303-311
ISSN:	1740-0929 1344-3941
Popis:	We investigated the effects of grazing and supplemental protein sources during the grazing period on growth performance, ruminal characteristics and blood constituents in 15 growing Wagyu steer calves weaned at 3 months of age. Each animal was allotted one of three treatments: (1) GSBM, soybean meal (SBM) supplemented as a protein source during a grazing period; (2) GCGM, corn gluten meal (CGM) supplemented as a protein source during a grazing period; or (3) NG, no grazing, in which steers were fed hay and GSBM concentrate only. The estimated rumen undegradable protein (RUP) concentration of CGM was higher than that of SBM. High RUP supplementation during the grazing period did not influence feed intake or growth performance. Compared with the NG treatment, the average daily gain in GSBM and GCGM calves was significantly depressed (P
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::ec3ccdd5f3499120ba6c93b352074ba8 https://doi.org/10.1046/j.1344-3941.2003.00121.x Zobrazit plný text záznamu Plný text ve formátu PDF