Evaluation of "Pampa-Corte" simulation model in different beef cattle fattening systems in Spain

Silveira, Vicente Celestino Pires; Casasús, I.; Alibés, Mireia Blanco; Joy, M.; Bernués, A.

doi:10.1590/s0103-84782011000300022

Cited by 3 publications

(2 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In sheep production, simulation models predict nutritional requirements, as well as productive, reproductive and economic performance (Gebre et al 2020). The Pampa Corte is a dynamic and mechanistic model developed in Brazil to simulate live weight gain in beef cattle (Silveira 2011); and validated for sheep production for conditions in Spain (Silveira et al 2012). Its adaptation to sheep production systems in Mexico represents an option for the rapid and reliable estimation of growth under different feeding scenarios.…”

Section: Introductionmentioning

confidence: 99%

Validation of a Pampa Corte simulation model for hair sheep production in a tropical silvi-pastoral system in Chiapas, Mexico.

Rebollo-Morales¹,

Yong-Ángel²,

Velarde-Guillén³

et al. 2021

Journal of Livestock Science

View full text Add to dashboard Cite

Most sheep production systems are based on grazing medium to low quality grasslands, with or without supplements. In tropical areas, the inclusion of legume shrubs and trees like Leucaena (Leucaena leucocephala) in silvopastoral systems associated with grassland are an alternative to improve their productivity. An efficient way to test the impact of these innovations is by simulation models. Therefore, the objective was to validate the Pampa Corte model developed in Brazil adapted to sheep growth under Mexican conditions to simulate the effect of the inclusion of Leucaena in a silvopastoral system based on Guinea grass (Megathyrsus maximus cv. Tanzania). Three scenarios were simulated, T1 = 100% Guinea grass, T2= 80% Guinea grass + 20% Leucaena, and T3= 60% Guinea grass and 40% Leucaena on a dry matter basis. Validation of the model was with data from a previous experiment on lamb growth fed a total mixed ration. Evaluation was from lineal regressions of simulated results over observed data. Results showed a coefficient of determination (R 2 ) of 0.94 between observed and estimated figures. The simulation model also showed that as the proportion of Leucaena increases in the silvopastoral system, the daily live weight gain (DWG) also increases. The model provided good results for lamb growth in silvopastoral systems based on Guinea grass with the inclusion of Leucaena and validated with data from feedlot lambs fed a total mixed ration, both for extensive silvopastoral systems with 20% Leucanea as for intensive silvopastoral systems with up to 40% of Leucaena inclusion.

show abstract

Section: Introductionmentioning

confidence: 99%

Validation of a Pampa Corte simulation model for hair sheep production in a tropical silvi-pastoral system in Chiapas, Mexico.

Rebollo-Morales¹,

Yong-Ángel²,

Velarde-Guillén³

et al. 2021

Journal of Livestock Science

View full text Add to dashboard Cite

show abstract

“…However, models that represent individual animal performance are still scarce in literature (FREER et al, 1997;CANNAS et al, 2004;CASTELLARO et al, 2006). The Pampa Corte model was developed in order to simulate beef cattle live-weight gain in a dynamic and mechanistic way (SILVEIRA, 2002;TREVISAN et al, 2009;SILVEIRA et al, 2011).…”

Section: Introductionmentioning

confidence: 99%