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

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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.
Lingua originaleEnglish
pagine (da-a)41-47
Numero di pagine7
RivistaSmall Ruminant Research
Volume97
Stato di pubblicazionePublished - 2011

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dairy sheep
economic valuation
profits and margins
Sheep
Economics
milk production
Milk
Survival Rate
survival rate
Costs and Cost Analysis
Fertility
production technology
lambs
pastures
variable costs
Ruminants
small ruminants
average daily gain
Birth Weight
birth weight

All Science Journal Classification (ASJC) codes

  • Food Animals
  • Animal Science and Zoology

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title = "Economic values for production and functional traits in Valle del Belice dairy sheep using profit functions",
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.",
keywords = "Breeding objectives, Economic values, Profit function, Sheep",
author = "Valentina Riggio and Baldassare Portolano and Marco Tolone and Maizon",
year = "2011",
language = "English",
volume = "97",
pages = "41--47",
journal = "Small Ruminant Research",
issn = "0921-4488",
publisher = "Elsevier",

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TY - JOUR

T1 - Economic values for production and functional traits in Valle del Belice dairy sheep using profit functions

AU - Riggio, Valentina

AU - Portolano, Baldassare

AU - Tolone, Marco

AU - Maizon, null

PY - 2011

Y1 - 2011

N2 - 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.

AB - 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.

KW - Breeding objectives

KW - Economic values

KW - Profit function

KW - Sheep

UR - http://hdl.handle.net/10447/76953

M3 - Article

VL - 97

SP - 41

EP - 47

JO - Small Ruminant Research

JF - Small Ruminant Research

SN - 0921-4488

ER -