Dissertation (Metadaten)
Titel:Development and application of a method to estimate feed digestibility in sheep grazing differently managed grasslands in Inner Mongolia, China
Autor:Chengjie Wang
Fakultät:Agrar- und Ernährungswissenschaftliche Fakultät
DDC Sachgebiet:590 Tiere (Zoologie)
Datum der mdl. Prüfung:18.07.2007
Referent(in):Prof. Dr. A. Susenbeth
Korreferent(en) Korreferentin:Prof. Dr. F. Taube
Beschreibung:Digestibility of herbage is the crucial information required for feed evaluation and to evaluate the different climatic and management factors that affect grassland and animal productivity. The fecal CP method does not require collection of representative herbage sample and shows great benefits as reliable, rapid and inexpensive method for estimating digestibility of herbage. In Chapter 2, the development and evaluation a prediction equation is described for estimating OM digestibility of herbage from CP concentration in fecal OM, using data from large number of in vivo digestibility trails in sheep with a large variation in herbage composition. In Chapter 3, the results of a gazing experiment with sheep are presented where the effects of two different grazing systems (rotational and continuous grazing) on HM, re-growth, feed intake and digestibility, and on LWG at moderate grazing intensity of 4.5 sheep/ha throughout two grazing seasons in the L. chinensis grassland of Inner Mongolia were investigated.
Schlagworte:Sheep; Organic matter digestibility; Fecal crude protein; Rotational and continuous grazing