A deterministic static model was used to estimate the economic values (EV) of production (MY, milk yield; BW, birth weight; and ADG, average daily gain) and functional traits (ASR, adult survival rate; LSR, lamb survival rate; FE, fertility; PR, prolificacy; and LWewe, mature weight of ewe) in Valle del Belice dairy sheep. In this study, values for the biological parameters and the production traits used in the model were taken from real data, by surveying 15 Valle del Belice farmers and reflected the production circumstances of pasture based dairy production systems. In this system feed cost accounted for 95% of total variable costs, whereas fixed costs were low and reflected traditional and small ruminants’ husbandry system. A base situation with a fixed number of animals was considered to estimate the EV for the traits considered in this study. Economic values were positive for production traits: € 0.31 (MY, kg), € 4.40 (BW, kg) and € 0.15 (ADG, g) and for functional traits: € 2.15 (ASR, %), € 0.78 (LSR, %), € 2.64 (FE, %), € 0.39 (PR, %), except for LWewe that was negative (€ −0.08, kg). Sensitivity analysis of EV to changes in prices indicated that future economic values for traits might change dependent on output and price levels, in particular on milk and meat price level. This study suggests that genetic improvement of milk production, lamb and adult survival rate, fertility and prolificacy will have a positive effect on profitability of pasture based dairy production system.

Tolone, M., Riggio, V., Maizon, D.O., Portolano, B. (2011). Economic values for production and functional traits in Valle del Belice dairy sheep using profit functions. SMALL RUMINANT RESEARCH, 97(97), 41-47 [10.1016/j.smallrumres.2011.01.019].

Economic values for production and functional traits in Valle del Belice dairy sheep using profit functions

TOLONE, Marco;RIGGIO, Valentina;PORTOLANO, Baldassare
2011-01-01

Abstract

A deterministic static model was used to estimate the economic values (EV) of production (MY, milk yield; BW, birth weight; and ADG, average daily gain) and functional traits (ASR, adult survival rate; LSR, lamb survival rate; FE, fertility; PR, prolificacy; and LWewe, mature weight of ewe) in Valle del Belice dairy sheep. In this study, values for the biological parameters and the production traits used in the model were taken from real data, by surveying 15 Valle del Belice farmers and reflected the production circumstances of pasture based dairy production systems. In this system feed cost accounted for 95% of total variable costs, whereas fixed costs were low and reflected traditional and small ruminants’ husbandry system. A base situation with a fixed number of animals was considered to estimate the EV for the traits considered in this study. Economic values were positive for production traits: € 0.31 (MY, kg), € 4.40 (BW, kg) and € 0.15 (ADG, g) and for functional traits: € 2.15 (ASR, %), € 0.78 (LSR, %), € 2.64 (FE, %), € 0.39 (PR, %), except for LWewe that was negative (€ −0.08, kg). Sensitivity analysis of EV to changes in prices indicated that future economic values for traits might change dependent on output and price levels, in particular on milk and meat price level. This study suggests that genetic improvement of milk production, lamb and adult survival rate, fertility and prolificacy will have a positive effect on profitability of pasture based dairy production system.
Settore AGR/17 - Zootecnica Generale E Miglioramento Genetico
Tolone, M., Riggio, V., Maizon, D.O., Portolano, B. (2011). Economic values for production and functional traits in Valle del Belice dairy sheep using profit functions. SMALL RUMINANT RESEARCH, 97(97), 41-47 [10.1016/j.smallrumres.2011.01.019].
File in questo prodotto:
File Dimensione Formato  
tolone et al; 2011.pdf

accesso aperto

Descrizione: Articolo principale
Dimensione 241.88 kB
Formato Adobe PDF
241.88 kB Adobe PDF Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10447/76953
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 13
  • ???jsp.display-item.citation.isi??? 14
social impact