Citas bibligráficas
Valentin, R., (2023). Comparación de dos programas de mejoramiento genético para llamas (Lama glama) K'ara en la provincia de Pasco, Perú [Universidad Nacional Agraria La Molina]. https://hdl.handle.net/20.500.12996/5811
Valentin, R., Comparación de dos programas de mejoramiento genético para llamas (Lama glama) K'ara en la provincia de Pasco, Perú []. PE: Universidad Nacional Agraria La Molina; 2023. https://hdl.handle.net/20.500.12996/5811
@mastersthesis{renati/247033,
title = "Comparación de dos programas de mejoramiento genético para llamas (Lama glama) K'ara en la provincia de Pasco, Perú",
author = "Valentin Guillermo, Roy Elias",
publisher = "Universidad Nacional Agraria La Molina",
year = "2023"
}
Llamas make an important contribution to the economy of rural families in the Andes. However, llama breeding is characterized by low productivity, which could be increased with various measures such as improved animal health, feeding and genetic improvement programs. The objectives of the study were: 1) to develop a technical proposal for the selection of male llamas for meat production and 2) to simulate the response to the selection of two breeding programs. The study was carried out in the Pasco province, Simón Bolívar district. The technical proposal for the performance test and selection of young males was elaborated based on information from the literature, taking into account the regulations of the Peruvian alpaca and llama genealogical registers. In the simulation, two scenarios were compared, where the genetic gain in live weight and the increase in inbreeding were evaluated. The genetic gain in live weight per year was used as the basis for the comparison of the two scenarios. In scenario 1, 40 llama breeders participated and a performance test center was established for male selection candidates. 40 young males (one per breeder) are evaluated, of which 14 are selected as replacements per year. Scenario 2 involves 40 breeders and the Cooperative San Pedro de Racco, where the cooperative functioned as a central nucleus. The nucleus is formed by males coming from the cooperative and females coming from the breeders and the cooperative. In addition, a performance testing center is established in the nucleus for 60 males and 77 females, of which 21 and 27 are selected per year, respectively. The genetic progress per generation for live weight gain was 0.756 kg and 0.954 kg in scenarios 1 and 2, respectively. The increase in inbreeding per generation was 0.3 percent for scenario 1 and 0.6 percent for scenario 2. The nucleus strategy leads to greater genetic progress, however, it requires better linkage and organization with the beneficiary breeders.
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