Browsing by Author "Perea, Jose"

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    Identification and implementation of technological packages for dual purpose cattle. a case study of Manabi-Ecuador
    (2014) Torres, Yenny; Rivas, Jose; De Pablos-Heredero, Carmen; Perea, Jose; Toro-Mujica, Paula; Angon, Elena; Garcia, Anton
    Advances in livestock systems are associated with the implementation of technologies in production and improvment of their income. The aim of this research was to examine the identification and implementation of technological packages and their relationship with the variability of the production in the dual purpose cattle of Manabi - Ecuador. Two climatic zones are distinguished: 1) Tropical dry forest and 2) Tropical rain forest. Twenty five (25) technologies grouped into six technological packages (TP) were selected by using qualitative and participatory methods. Interviews were conducted in a sample of 41 farms to assess the implementation of technological packages, using descriptive statistics, Sperman correlations and multiple regressions. The higher degrees of implementation correspond to animal health (76.2 %), equipment (55.6 %) and feeding (55.5 %). Correlations (P<0.01) between TP of feeding, with equipment (0.711) and reproduction (0.774) were evidenced. The variability in milk production (30 %) is explained by the TP of land use in the Tropical dry Forest and by the TP animal health in Tropical rain forest. This research facilitates preliminary results about the identification of a number of technologies that are implemented in the dual purpose cattle of Manabi - Ecuador. Moreover, all animal production systems being seeking a dynamic balance of technologies that allows farms migrate to more efficient processes without losing the main attributes, in this case of the dual purpose cattle systems.
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    TECHNICAL EFFICIENCY AND VIABILITY OF GRAZING DAIRY CATTLE SYSTEMS IN LA PAMPA, ARGENTINE
    (COLEGIO DE POSTGRADUADOS, 2013) Angon, Elena; Garcia, Anton; Perea, Jose; Acero, Raquel; Toro Mujica, Paula; Pacheco, Hernan; Gonzalez, Ana
    Grazing dairy systems in La Pampa are going through a difficult situation due to low profitability and the competitive and sustitutive relationship between agriculture and livestock production over use of the land. Agriculture (primarily soy and maize) is listed at international prices, but dairy production competes in the inner Argentinian market. In this complex situation it is necessary to understand the efficiency and viability of these systems in the province of La Pampa (Argentina). Random stratified sampling was carried out per department with proportional allotment and 47 producers were interviewed, representing 27 % of the producers in the Pampa basin. Milk production (MP, L year(-1)) was modelled with regards to the size of the herd in number of milking cows (MC) and concentrate intake (CONI, kg MC-1 d(-1)). Through parametric techniques, an average technical efficiency of 35 % was estimated and three levels of efficiency were established through the interval OF ((x) over bar - 1 / 2S,(x) over bar +1 / 2S). Later, through single-factor variance techniques of fixed effects the variables that explain differences based on the level of efficiency were determined: size, productivity, percentage of permanent grasslands, use of supplements, labor productivity and degree of diversification of farms. The viability study revealed that 59.6 % of farms are not economically viable. The main factors to increase viability are: improving feeding guidelines and use of concentrate; optimization of input allotment and size of farms.