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Sosa R.,Institute Investigaciones Porcinas IIP | Diaz Y.M.,Institute Investigaciones Porcinas IIP | Cruz T.,Institute Investigaciones Porcinas IIP | De La Fuente J.L.,Institute Investigaciones Porcinas IIP
Cuban Journal of Agricultural Science

This study shows the most recent advances of the "Centro de Promoción y Desarrollo de Biogás" (CPDB) about the use, diversification and perspectives of anaerobic digestion of Cuban pigs. Some of the reached results are the generation of electricity using biogas, the development of biodigesters of fixed domes and the tubular ones, the drying bed/biodigester system, and the characterization of biogas, produced in Cuba, not only with water wastes but also with residues of high content of animal fat. It is also stated the usage of new construction materials for repairing the biodigesters, and the experiences of the recycling of water. This study is also about the perspectives of the use of biogas in breeding pigs in Cuba. It can be concluded that the usage of biogas for cooking and generating electricity shows the development and diversification of this resource in Cuban agriculture. The results allowed characterizing the biogas and its more important indicators in the Cuban conditions. Besides, several plant systems of biogas have been evaluated and developed for small and medium pig productions. It is recommended to continue the researches and technology transfers in biogas plants that allow to accelerate, in short time, the use of these plants for the productions of cooperatives, small farms and state farms. It is suggested to continue the development of researches and technology transfers in prototypes of equipment for the use of biogas (lamps, refrigerators, electricity generators, among others). It is necessary to increase the training and organization as a way of increasing the number of specialists and technicians for working in plants and equipment design for the use of biogas, with the objective of carrying out constructions and installations in a short period. Source

Cruz E.,Institute Investigaciones Porcinas IIP | Almaguel R.E.,Institute Investigaciones Porcinas IIP | Mederos C.M.,Institute Investigaciones Porcinas IIP | Ly J.,Institute Investigaciones Porcinas IIP
Zootecnia Tropical

In order to evaluate the deep bedding technology as alternative for fattening pigs in the rural sector, in Cuba. Two rearing cycles of 106 days with 108 animals each (castrated males and females), YL (Camborough) cross, of approximately 21,0 kg live weight and 75 days average age were used. The pigs were distributed into a random block design with three treatments for each cycle: T1, deep bedding based on gramineous hay; T2, deep bedding based on dried sugar cane bagasse (80%) and gramineous hay (20%) and T3, solid concrete floor, with four repetitions by treatments. The animal performance traits (up to approximately 100 kg live weight) were studied. A chemical and microbiological evaluation of the bedding material was made. There were significant differences for the consumption and the alimentary conversion (P<0,05) to the pigs housed in hay bed, bagasse and hay bed and solid concrete floor: 2,53; 2,50; 2,74; 3,42; 3,38 y 3,60 respectively. Significant differences were obtained (P<0,01) for the nitrogen and the phosphorous in the bedding material at the end of the experience: 1,43 and 1,85, respectively. There was not presence of Salmonella sp and helmints eggs. It was saved 360 m3 of water. It was conclude that the deep bedding technology is an alternative that satisfies the current demands of the rural pig producers in Cuba. Source

Cruz E.,Institute Investigaciones Porcinas IIP | Almaguel R.E.,Institute Investigaciones Porcinas IIP | Mederos C.M.,Institute Investigaciones Porcinas IIP | Cordero Y.,Institute Investigaciones Porcinas IIP | Ly J.,Institute Investigaciones Porcinas IIP
Livestock Research for Rural Development

The pig production system in deep bedding is now very important in Cuba, in productive and social terms, as an alternative for small-scale pig production. This paper concerns the physical-chemical studies (organic matter, nitrogen, phosphorous, rate carbon/nitrogen, pH and temperature) and microbiological studies (fecal coliforms, Salmonella sp and helmint eggs) made to the compost generated from this system in the Swine Research Institute. Was characterized the compost after two breeding cycles of 106 days each. Microbiological results were transformed to log10 (x +1) and the statistical analysis of the chemical and microbiological parameters was applied to analysis of variance, using a mathematical model of simple classification. This residue showed a relatively high content of oxidizable organic matter, with a near neutral pH and thermophilic temperature values. The nitrogen level reported (0.97%) is comparable to the internationally established rules for different biosolids and there was no presence of phosphorus. There was no presence of Salmonella sp. or helmints eggs at the end of two cycles of breeding. It was conclude that the compost from the deep bedding system for fattening pigs, in the Swine Research Institute, is a potential source of nutrients to be applied in agriculture as organic fertilizer and does not represent risks from microbiological point of view. It was recommended to evaluate the use of this waste once stabilized as organic fertilizer in different crops. Source

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