论文信息 - Vicente Celestino Pires Silveira I Javier Álvarez-Rodríguez II Margalida Joy II Albina Sanz II

Vicente Celestino Pires Silveira I Javier Álvarez-Rodríguez II Margalida Joy II Albina Sanz II

The Pampa-Corte model developed to simulate growth of beef cattle was adapted to simulate lamb growth. This paper has the objective to describe the main modifications and the fitness of model in the simulations of lamb growth. To validate the model two datasets from Centro de Investigacion y Tecnologia Agroalimentaria de Aragon (Zaragoza, Spain) were used. The first one used data from 29 male and 10 female lambs of Rasa Aragonesa breed born in spring of years 2005, 2006 and 2008. The second data came from 32 male lambs of Churra Tensina breed born in spring of years 2004 and 2007. The model showed good fit between observed and simulated data in intensive finishing lamb systems, although small deviations were observed after slaughtering the first animals that reached the commercial live-weight (LW) of 22kg.

Alberto Bernués

[1] G. Ripoll,et al. Ewe metabolic performance and lamb carcass traits in pasture and concentrate-based production systems in Churra Tensina breed , 2008 .

[2] I. Gordon,et al. Prediction of intake and digestion in ruminants by a model of rumen kinetics integrating animal size and plant characteristics , 1991, The Journal of Agricultural Science.

[3] A. Bernués,et al. Evaluation of "Pampa-Corte" simulation model in different beef cattle fattening systems in Spain , 2011 .

[4] Van Soest. Symposium on Nutrition and Forage and Pastures: New Chemical Procedures for Evaluating Forages , 1964 .

[5] J. M. A. Tilley,et al. A TWO-STAGE TECHNIQUE FOR THE IN VITRO DIGESTION OF FORAGE CROPS , 1963 .

[6] V. Silveira. Pampa corte: um modelo de simulação para o crescimento e engorda de gado de corte , 2002 .

[7] P. V. Soest. Nutritional Ecology of the Ruminant , 1994 .

[8] M. Theodorou,et al. A simple gas production method using a pressure transducer to determine the fermentation kinetics of ruminant feeds. , 1994 .

[9] E. Ørskov,et al. A study of artificial fibre bag technique for determining the dig estibility of feeds in the rumen , 1977, The Journal of Agricultural Science.