The objective of the study was to evaluate the phenotypic variability of the percentage of medullated fibres of Huacaya alpacas, as well as to calculate the phenotypic correlation between the average diameter of fiber (ADF) and the percentage of total medullation (PM). Fibre samples were collected from 36 Huacaya alpacas (0.4-10.4 years old males) to analyse the ADF and the PM with the projection microscope. The type of medulla of the fibres was considered as not medullated, fragmented, discontinuous, continuous and strongly medullated. A high phenotypic variability of PM between alpacas and within the samples was observed. The mean ± standard deviation of PM and ADF was 32.56 ± 18.30% and 17.58 ± 2.52 μm for non-medullated fibres; 29.29 ± 11.67% and 21.49 ± 2.39 μm for fragmented medullated fibres; 14.01 ± 10.14% and 24.04 ± 2.40 μm for discontinuous medullated fibres; 23.90 Â...

The objective of the study was to evaluate the phenotypic variability of the percentage of medullated fibres of Huacaya alpacas, as well as to calculate the phenotypic correlation between the average diameter of fiber (ADF) and the percentage of total medullation (PM). Fibre samples were collected from 36 Huacaya alpacas (0.4-10.4 years old males) to analyse the ADF and the PM with the projection microscope. The type of medulla of the fibres was considered as not medullated, fragmented, discontinuous, continuous and strongly medullated. A high phenotypic variability of PM between alpacas and within the samples was observed. The mean ± standard deviation of PM and ADF was 32.56 ± 18.30% and 17.58 ± 2.52 μm for non-medullated fibres; 29.29 ± 11.67% and 21.49 ± 2.39 μm for fragmented medullated fibres; 14.01 ± 10.14% and 24.04 ± 2.40 μm for discontinuous medullated fibres; 23.90 Â...

Genealogical and productive records are the most important pillars within genetic and genomic improvement programs, where the diversity of data that can be collected must be systematized and related, to carry out an adequate statistical analysis considering all the factors that influence the variables. On the other hand, the current proposals do not contemplate the total registration of the population, both genealogical and productive records. Moreover, there is no software that allows systematizing, ordering and providing objective and measurable information in an orderly manner within the management of domestic camelids. For this reason, the construction of a computer application was proposed allowing the collection of genealogical and productive records of the entire population of both alpacas and llamas within the herds. As a result, the computer application called "Pacokipu" and "Ll...