Grasslands are ecosystems of global importance; in Peru, they represent more than half of the country's territory. However, few studies have been conducted on high Andean grasslands. The objective was to study morphological, productive, resource allocation, and nutritional characteristics in five populations of Festuca dolichophylla grown under similar conditions. Populations that originated from Huancavelica Community and University, Junín, Pasco, and Puno were grown in Huancavelica Community in a randomized block design. After twelve months, a uniformization cut was performed, and five months later they were evaluated. Morphological characteristics, productivity, and resource allocation were analyzed with ANCOVA, the nutritional characteristics were analyzed with one-way ANOVA (considering population as a factor). Significant differences (p < 0.05) were found for morphological charact...

El objetivo de la investigación fue evaluar las características morfológicas, parámetros productivos y características textiles en llamas (Lama glama) K’ara. Se trabajó con 292 llamas de unidades productivas de la región Huancavelica. Las características morfológicas (altura a la cruz, AC; altura a la grupa, AG; prerímetro torácico, PT; perímetro abdominal, PA; longitud de cuello, NL; longitud de cuerpo, BL) se obtuvieron con un bastón zoométrico, el peso vivo - PV se midió con una balanza digital colgante y las características de la fibra (diámetro de fibra, DF; coeficiente de variación del diámetro de fibra, CVDF; índice de curvatura, IC; longitud de mecha, LM; factor de confort, FC) se estudiaron en muestras de fibra que fueron analizados con el equipo OFDA-2000 (Optical Fibre Diameter Analyser). Para el análisis de los datos, se tuvo en cuenta el sexo y edad co...

El objetivo de esta investigación fue determinar el contenido nutricional y la digestibilidad in vivo de la materia seca de tres variedades de alfalfa (Alfamaster 10, Moapa 69 y Supersonic) en la alimentación de cuyes. Se utilizaron 15 cuyes machos de raza Perú (cinco por variedad), que se alojaron en jaulas metabólicas individuales. Se tuvo un periodo de acostumbramiento y evaluación. En la última etapa se registró el consumo de materia seca y el peso de las heces. Además, se determinó el contenido nutricional de las variedades de alfalfa. El contenido de proteína cruda, cenizas, fibra cruda, fibra detergente neutra, fibra detergente ácida y digestibilidad de la materia seca fueron diferentes (p<0.05) entre variedades de alfalfa; en cambio, el porcentaje de materia seca y extracto etéreo fueron similares (p>0.05). La variedad Supersonic mostró mayores contenidos de pr...

Alpaca fibre exhibits different quality grades based on fibre diameter and is regulated by the Peruvian Technical Standard – NTP 231.301.2022; however, there are few studies on its cross-sectional characteristics and tensile strength as a function of these different qualities. This study aimed to investigate the cross-sectional characteristics, fibre diameter, and tensile strength in relation to the quality grades. Seven fibre quality groups were established by measuring fibre bundles, and four samples were taken from each group. The cross-sectional characteristics, fibre diameter, and tensile strength were measured using the Fiber Mult, Fiber EC, and Fiber TST devices, respectively. All three variables were affected by fibre quality (p<0.05), showing larger cross-sectional areas and diameters in lower-quality fibres, while tensile strength increased up to quality grade 5 (Fine) bef...

Background: Alternative forages, such as chicory and plantain, have been successfully applied in various animal species. As a result, these forages could serve as an alternative for raising guinea pigs in high Andean regions; however, few, if any, reports have been published on the effects of their inclusion on growth, production, and carcass yield. Aim: This study aimed to determine the effects of incorporating chicory and plantain into the diet of guinea pigs on growth, production, and carcass yield, elucidating the possibility of using these species for feeding guinea pigs. Methods: The study was conducted in Andahuaylas—Perú, in an experimental period of 6 weeks. Five guinea pigs were randomly assigned to each diet treatment (30% chicory–70% lucerne, 30% plantain–70% lucerne, 50% chicory–50% lucerne, 50% plantain–50% lucerne, and 100% lucerne as a control). Growth, product...

The intensive use of chemical fertilizers in agriculture contributes to environmental pollution, which has driven the search for sustainable alternatives such as organic fertilizers. Among these, biofertilizer has garnered interest due to its potential to improve crop growth and yield. The objective of this study was to evaluate the effect of two types of biofertilizer: Bio Chumbinia (standardized) and traditional biofertilizer, as well as a control treatment (water), on the morphology, growth, yield, and leaf area of Maralfalfa (Pennisetum sp.). Morphological and growth variables were measured every 14 days, while yield and leaf area were evaluated in two successive periods corresponding to 42 days of growth. The results indicated that most morphological and growth parameters were significantly influenced by treatment, time, and evaluation (p < 0.05), except for tiller number, blade num...

In the tropical Andes, rangeland degradation has become one of the main threats to the sustainability of livestock production in the face of climate change. In this context, optimizing the yield and nutritional quality of raw material for silage is essential to sustain livestock productivity. The aim of this study was to identify local accessions (LM) of Lolium multiflorum Lam. with greater forage potential through evaluations in consecutive cuts made at the anthesis phenological stage, using a randomized complete block design with four replicates and ten local accessions (LM1, LM2, LM3, LM4, LM6, LM7, LM8, LM11, LM12 and LM13). The statistical analysis, based on linear mixed models, showed that cuts at anthesis had a significant effect among accessions, revealing high variability in agronomic and nutritional performance across cuts. In LM4, plant height at the fourth cut was 2.48-fold h...

Scenarios of climate change, extensive land use, soil degradation, the loss of native forest cover due to monoculture expansion, and pasture scarcity pose new challenges to livestock farming worldwide. Associated crops emerge as an alternative to mitigate these factors; however, selecting compatible species that do not generate competition and optimize the attributes of the forage is a necessity. Therefore, this study evaluated the effect of a maize and bean association, and cutting time on the morphological variables, yield, and nutritional composition of forage. A randomized complete block design (RCBD) with a 3A × 3C factorial arrangement and three blocks was used. Factor A (associations) had three levels: INIA-604-Morocho maize monoculture (M), M+PER1003544 chaucha bean association (M+F1), and M+PER1003551 chaucha bean association (M+F2). Factor C (maize cutting stage) had three lev...