Lamb fattening on Mediterranean‐like pastures in Chile versus olive oil cake‐based rations
Mediterranean‐like pastures in Central and South Chile house nearly half of the national sheep population, dominated by Merino and various crossbreds,with an important contribution of blackface breeds.A large proportion of these sheep are managed by small farmers using native pastures with a very small contribution of sown pastures and forages.The large majority of the native grasslands are severely degraded,and their yield is small and heavily seasonal.Wool and lamb yields are therefore small.Cultivation of olives trees for the production of high quality oil is rapidly expanding in the region.Using the modern two‐phase extraction,3‐4 metric tons of residues (.cake) are produced for every ton of oil.These residues are occasionally composted but most frequently left to decompose on the field.This unexhausted cake has a high demand for oxygen,decomposes slowly and can contaminate soils and water sources ; nevertheless,it can be used as an animal feed.The objective of the present work was to compare the performance of suckling,grazing lambs with that of contemporary weaned lambs fed either a control‐or a cake‐based ration.
lamb fattening Chile pastures olive‐oil cake
C.Aguilar R.Vera R.Lira J.Quenaya F.Squella H.Yutronic P.Toro P.Perez I.Briones
Ponti f icia Universidad Católica,Santiago,Chile I N IA,Chile Universidad de Chile FIA,Ministerio de Agricultura,Santiago,Chile
国际会议
呼和浩特
英文
2008-06-29（万方平台首次上网日期，不代表论文的发表时间）