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Estimation of economic values for traits of dairy sheep: II. Model application to a production system with one lambing per year

M. Wolfová^*,1, J. Wolf^*, Z. Krupová and M. Margetín

^* Institute of Animal Science, PO Box 1, CZ 104 01 Prague Uhínves, Czech Republic
Slovak Agricultural Research Center, Research Institute of Animal Production, Hlohovská 2, SK 949 91 Nitra, Slovak Republic

¹ Corresponding author: wolfova.marie{at}vuzv.cz

A bioeconomic model for dairy sheep was applied to a production system with one lambing per year. The classical extensive Carpathian system with indoor winter lambing, traditional weaning, sale of surplus lambs before Easter, and a summer milking period with ewes on pasture was modeled. The economic values of 15 performance and functional traits were calculated for the Slovakian Improved Walachian multi-purpose breed. The economic values per unit increase in the traits were 0.32 /kg of milk yield during the standardized milking period of 150 d, 0.29 /0.1% milk fat, 0.42 /0.1% milk protein, 0.28 /% and 0.56 /% for conception rates of female lambs and ewes, respectively, 0.20 /0.01 lamb born, 0.0036 /% and 0.0040 /% for lamb survival at birth and until weaning, respectively, 0.65 /kg of birth weight, 0.032 /g per d daily gain from birth until weaning, –0.030 /kg of mature weight, –0.38 /0.1 and –0.21 /0.1 conformation quality grade for weaned lambs and adult sheep, respectively, 0.42 /kg of fleece weight and 11.10 /year of productive lifetime for ewes.

Key Words: dairy sheep • bioeconomic model • economic value

This article has been cited by other articles:

				M. Wolfova, J. Wolf, Z. Krupova, and J. Kica Estimation of economic values for traits of dairy sheep: I. Model development J Dairy Sci, May 1, 2009; 92(5): 2183 - 2194. [Abstract] [Full Text] [PDF]