Examinando por Materia "Creole goats"

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Creole goat morphological diversity partially mirrors district-level variation in the seasonally dry forest of Piura in Peru
(Public Library of Science, 2025-12-31) Haro Reyes, José Antonio; Sessarego Davila, Emmanuel Alexander; Cruz Flores, Danny Julio; Gonzales Guevara, Pablo Ross; Ruiz Chamorro, José Antonio; Cruz Luis, Juancarlos Alejandro
Livestock systems in marginal ecosystems such as seasonally dry forests (SDFs) face increasing sustainability challenges, yet the role of morphology in mediating animal adaptation to local environmental and management conditions remains underexplored. In the Piura region of northern Peru—home to the country's most extensive SDF and its leading hub of goat production—Creole goats represent a diverse and under-characterized resource shaped by natural and human selection. Despite Creole goats' relevance, little is known about the spatial structure of their phenotypic variation or how it may signal emerging regional morphotypes. Addressing this gap, we conducted a comprehensive morphometric analysis of 617 female Creole goats across three distinct districts within Piura's SDF. Using linear body measurements (LBMs), morphometric indices, and multivariate analyses, we revealed significant district-level phenotypic differentiation. Goats from Catacaos exhibited consistently larger body dimensions and higher compactness indices, forming a distinct cluster in hierarchical analyses and suggesting the emergence of a localized morphotype. Notably, this phenotypic pattern was largely driven by animals from four specific farmers, pointing to the potential influence of herd-level management practices or breeding history. Despite this within-district heterogeneity, the Catacaos subgroup remained clearly differentiated from goats in Lancones. Principal component analysis of LBMs identified a dominant size axis explaining over 70% of variance, with Catacaos goats diverging along this dimension. In contrast, morphometric indices showed weaker discriminatory power. These findings suggest that LBMs outperform derived indices in capturing fine-scale phenotypic structure and may reflect both ecological adaptation and management-driven selection. Our results underscore the potential of morphometric profiling for identifying regionally adapted livestock types and lay the groundwork for future geographic indication schemes that valorize local biodiversity and support rural livelihoods.
Genomics and reproductive biotechnologies in goat production systems in Peru
(2026-06-01) Romero Avila, Yolanda Madelein; Sessarego Davila, Emmanuel Alexander; Pinazo Herencia, René Alfredo; Cruz Luis, Juancarlos Alejandro
Goat production in Peru is primarily carried out under extensive systems shaped by climatic variability, forage seasonality, infrastructure limitations, and persistent sanitary pressure. In this context, Creole goats represent a strategic animal genetic resource due to their capacity to adapt to arid and high-Andean environments. This review integrates the available evidence on production typologies in the main goat-producing regions of the country, the major sanitary and structural bottlenecks, and the state of the art of genomic, multi-omics, and reproductive biotechnology tools applicable to goats. It discusses how the transition from traditional markers to SNP genotyping, together with functional approaches such as microbiome analysis, transcriptomics, and proteomics, can contribute to understanding the biological basis of complex traits related to resilience, feed efficiency, and reproductive performance. Likewise, the potential of precision livestock farming to generate longitudinal phenotypes and strengthen genetic improvement programs in low-input systems is highlighted. Finally, priorities and considerations are outlined to advance the integration of phenotyping, genomics, and reproductive biotechnologies in extensive contexts, with emphasis on the generation of systematic data, interinstitutional coordination, and technology transfer aimed at the sustainability and conservation of goat resources. These insights may also inform genetic improvement strategies in other developing countries facing similar environmental and structural constraints in low-input goat production systems, particularly in arid and semi-arid regions.
Prevalence of Brucella melitensis in creole goats raised in extensive systems in the tropical dry forest of Amazonas, Peru
(Universidade Federal de Minas Gerais – Escola de Veterinária, 2025-11-03) Tafur Gutierrez, Lucinda; Alva Tafur, Gudelio; Godoy Padilla, David José; Frías, H.; Arista, M.A.; Bardales, W.; Encina, R.; Cruz Luis, Juancarlos Alejandro; Murga, N.L.
Este estudo teve como objetivo avaliar a prevalência da Brucella melitensis em populações de cabras nativas de Utcubamba, situada na região amazônica do Peru. Foram coletadas 354 amostras de sangue de cabras de vários sexos e idades de 18 produtores dos distritos de Bagua Grande, El Milagro e Cumba. Cada produtor preencheu um questionário sobre a presença da doença. As amostras de sangue foram centrifugadas para extrair o soro, armazenadas a -20°C e posteriormente analisadas por meio de um teste ELISA indireto. Os resultados não indicaram nenhum caso positivo de Brucella melitensis em Utcubamba. Esse resultado pode ser atribuído, em grande parte, à ausência de movimentação de animais Prevalence of… Arq. Bras. Med. Vet. Zootec., v.77, n.6, 2025 5 reprodutores de outras regiões e à implementação de um programa de controle e erradicação pelo Serviço Nacional de Saúde Agrária (SENASA) desde 2000. Utcubamba é considerada livre de Brucella melitensis devido a dois fatores principais: o consumo limitado de leite de cabra na região e a ausência de animais reprodutores introduzidos de áreas potencialmente infectadas. Essas condições atenuam substancialmente o risco de transmissão e refletem um ambiente favorável à saúde das populações caprinas locais.