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The National Institute for Agricultural and Food Research and Technology (INIA) is an autonomous Public Research Organisation (OPI) of the State Secretariat of Research, Development and Innovation of the Ministry of Economy and Competitiveness. It's the only public research organisation of the National State Administration exclusively dedicated to agrifood and forestry research. INIA's mission, in coordination with the equivalent institutions of the Autonomous Regions is to contribute to continuous and sustainable progress through development [...]

Journal Article

Journal article

Effect of the farm geographical location on the fertility after artificial insemination in Rasa Aragonesa ewes belonging to U.P.R.A. selection scheme  [2011]

Palacín, I., Universidad de Zaragoza, Huesca (España). Escuela Politécnica Superior de Huesca; Santolaria, P., Universidad de Zaragoza, Huesca (España). Escuela Politécnica Superior de Huesca; Fantova, E.; Blasco, M.E.; et al.

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The aim of this study was to analyze the effect of the farm geographical location and of the theoretical time distance between the farm and the insemination center on the fertility after cervical AI. Data from 18,528 AI in Rasa Aragonesa ewes belonging to the UPRA selection scheme were recorded. An average fertility of 54.3% was observed, with significant differences among the three provinces studied (Huesca: 58.6%; Zaragoza: 55.6%; Teruel: 44.3%; p<0.001). Fertility rates higher than 60% were found in three regions (Jacetania, Somontano and Daroca). The average time distance of these regions (<70 minutes) did not differ from that of the region with the lowest results (38.5-48.3%), therefore the effect of other variables should be studied. The regions nearest to the insemination center, with similar climatic conditions showed intermediate fertility rate (54.0-57.8%). These results showed a huge variability after insemination taken in account the geographical location of the farm and the distance to the insemination center. Future multifactorial studies are necessary including other factors with a possible effect on fertility.

From the journal

Congresos y Jornadas. Serie Producción Animal - Asociación Interprofesional para el Desarrollo Agrario (España)