| TAZ-TFM-2013-614 |
El aumento de la prolificidad en el ganado ovino: Efectos económicos en las explotaciones y fisiológico-nutritivos en corderas de raza Ripollesa
Dkhili, Najet
Milán, María José (dir.) ; Caja, Gerardo (dir.)
Guada Vallepuga, José Antonio (ponente)
Universidad de Zaragoza,
VET,
2013
Producción Animal y Ciencia de los Alimentos department, Producción Animal area
Máster Universitario en Nutrición Animal
Free keyword(s): oveja ripollesa ; prolificidad ; alimentación ; gestión económica
Tipo de Trabajo Académico: Trabajo Fin de Master
Notas: This paper presents a study done in the Autonomous Community of Catalonia (Spain) on the economic consequences of increasing the prolificacy in farms of Ripollesa sheep breed, a local breed intended for meat production, and its effect on metabolic profile of ewe-lambs retained for replacement. A survey was done in 10 representative farms in 2 provinces of the above cited community: Girona and Barcelona. The obtained data corresponded to the annual average for 2010 and were statistically analyzed and compared by mean of an analysis of variance. Results showed that sheep farms studied were family type, with a flock size of 554 ewes and 20 males, and 353.5 sheep attended by worker, on average. Prolificacy and productivity showed values of 1.28 lambs/litter and 1.18 lambs sold/ewe and year, respectively, on average. Net margin was 10.7 €/ewe per year, on average. Total income was 146.8 €/sheep and year, the greater part coming from lamb sales (61.8%), followed by subsides (36.2%) and the rest from selling culled ewes and wool. On average, total costs were 136.1 €/sheep per year. Feeding costs were the greatest (43.2%) in total costs, followed by labor costs (40.9%) and depreciation costs (6.1%). Farms having a prolificacy greater than the mean (1.28 lambs/ litter), were able to pay the total costs and earned 25.8 €/ewe more per year. On the same sense, a prolificacy increase of 0.1 lambs/litter resulted in 6.9 €/ewe of extra revenue. A significant correlation between productivity and net margin (R ² = 0.5) was detected, increasing 4.3 € for each 0.1 lambs products per ewe and year. Finally, flock size resulted critical, recommending owning more than 400 sheep per farm and exploiting 300 ewes per worker, on average.
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