El presente trabajo de investigación se realizó, con el objetivo de determinar el efecto de la edad sobre la densidad folicular en llamas del Centro de Investigación y Desarrollo de Camélidos Sudamericanos - Lachocc. Para ello se obtuvieron muestras de piel del .costillar medio de 54 Llamas de raza Q'ara de 1, 2, 3, 4 y 5 años de edad entre Hembras. (30) y Machos (24). Las muestras de piel se obtuvieron por punción con un sacabocado de 8 mm de diámetro, se sumergieron en formol (al 1 O%) y fueron procesados por la técnica de inclusión en parafina, se hizo la tinción de hematoxilina-eosina y posteriormente se realizó el conteo de folículos con ayuda del software Axio Vision (v. 4.8.2), obteniéndose finalmente la densidad de Folículos totales (FT), Folículos primarios (FP), Folículos Secundario (FS) y el Índice folicular (FS/FP). · Los resultados de la densidad (media) fu...

The test was carried out on the grounds of the National University of Huancavelica, between the months of January and February 2019, with the objective of evaluating the substrates and harvest times in the performance of the FVH of barley. For this, 54 trays (25.5x35.5cm) were used, distributed in three treatments; T0 (Control treatment or without substrate), T1 (sawdust), T2 (Stipa ichu ground), 100ml of 0.5% urea was added to the trays with substrate (55g of 2 to 3mm of particle) and allowed to soak for 24 hours. The sowing density was 2.5kg / m2. Irrigation was done twice a day. It was harvested in three times (15, 19, 23 days), thus cutting a quadrant of 10x10cm / tray.The different harvest times did not show significantly (P> 0.05) changes in the biomass production (3.54, 3.51 and 3.69kg / m2 for 15, 19 and 23 days respectively), increasing significantly (P <0.05) the height o...

The aim of this study was to evaluate the ruminal kinetics of the degradation of dry matter (DM), crude protein (CP) and neutral detergent fibre (NDF) of oat silage - potato foliage, in the ratio of 70:30, including four levels of wheat bran (0, 10, 20, 30%, based on the natural matter of the ensiled mass). A factorial randomized block design of 4 x 6 (levels, times) with three replications was used. Three Brown Swiss cattle with ruminal fistula were used. Samples (5 g) were placed in a nylon bag and incubated for 4, 8, 12, 24, 48 and 72 h. Zero time (t0) was used to calculate the soluble fraction. The disappearance (degradability) of DM, CP and NDF showed a quadratic result, observing an increase in the degradability of these nutrients up to the optimum level of 27.64, 22.64 and 27.80% inclusion of wheat bran in oat silage - potato foliage for 48 h of incubation, respectively. Except fo...

The research was carried out in the alpaca production unit of the Tomas Peasant Community, of the Lima Region, with the aim of identifying the floristic component of the pasture of a wetland area in the dry season of the year and the species that were most consumed by alpacas. Previously, the floristic inventory of 5 hectares of pasture was carried out and 10 mother alpacas and 10 tuis alpacas were assigned. During the study period, stool samples were taken to evaluate the diet by the microhistological method. The chemical components of the six main species of grasses most consumed were analyzed. In the initial inventory 36 species were found, of which the most consumed were 10 that made up approximately 80% of the diet. Chemical analysis shows a crude fiber content in a range between 66,23 to 77,24%, crude protein between 2.49 to 5,21% and vitamin A between 0,08 to 0,37 mg / 100g. The c...

The research was carried out in the alpaca production unit of the Tomas Peasant Community, of the Lima Region, with the aim of identifying the floristic component of the pasture of a wetland area in the dry season of the year and the species that were most consumed by alpacas. Previously, the floristic inventory of 5 hectares of pasture was carried out and 10 mother alpacas and 10 tuis alpacas were assigned. During the study period, stool samples were taken to evaluate the diet by the microhistological method. The chemical components of the six main species of grasses most consumed were analyzed. In the initial inventory 36 species were found, of which the most consumed were 10 that made up approximately 80% of the diet. Chemical analysis shows a crude fiber content in a range between 66,23 to 77,24%, crude protein between 2.49 to 5,21% and vitamin A between 0,08 to 0,37 mg / 100g. The c...

The research was carried out in the alpaca production unit of the Tomas Peasant Community, of the Lima Region, with the aim of identifying the floristic component of the pasture of a wetland area in the dry season of the year and the species that were most consumed by alpacas. Previously, the floristic inventory of 5 hectares of pasture was carried out and 10 mother alpacas and 10 tuis alpacas were assigned. During the study period, stool samples were taken to evaluate the diet by the microhistological method. The chemical components of the six main species of grasses most consumed were analyzed. In the initial inventory 36 species were found, of which the most consumed were 10 that made up approximately 80% of the diet. Chemical analysis shows a crude fiber content in a range between 66,23 to 77,24%, crude protein between 2.49 to 5,21% and vitamin A between 0,08 to 0,37 mg / 100g. The c...

The research was carried out in the alpaca production unit of the Tomas Peasant Community, of the Lima Region, with the aim of identifying the floristic component of the pasture of a wetland area in the dry season of the year and the species that were most consumed by alpacas. Previously, the floristic inventory of 5 hectares of pasture was carried out and 10 mother alpacas and 10 tuis alpacas were assigned. During the study period, stool samples were taken to evaluate the diet by the microhistological method. The chemical components of the six main species of grasses most consumed were analyzed. In the initial inventory 36 species were found, of which the most consumed were 10 that made up approximately 80% of the diet. Chemical analysis shows a crude fiber content in a range between 66,23 to 77,24%, crude protein between 2.49 to 5,21% and vitamin A between 0,08 to 0,37 mg / 100g. The c...

El presente estudio se realizó en el Camal Municipal de Huancavelica, Perú. Se registraron datos de 111 ovinos criollos procedentes de criadores de diferentes lugares de la zona, de ambos sexos y de dos edades (4 y 6 dientes), controlados en el período de febrero 2022 a marzo 2022, con el objetivo de determinar correlaciones fenotípicas entre el PVS y las medidas biométricas: longitud de cuerpo (LC), altura de cruz (ALCR), profundidad de tórax (PTR), amplitud torácica (AMTR), perímetro torácico (PT), amplitud de lomo (AMLM) y largo de lomo (LALM). No hubo efecto del sexo en los PVS, pero si en el factor edad. La variable PVS fue mayor en la edad de 6 dientes respecto a 4 dientes en ovinos criollos, pero en sexo el mayor peso obtuvo las hembras respecto a los machos. Se evidenciado correlaciones fenotípicas moderamente baja entre PVS con PT=0.53***, LC con PTR=0.46***, PVS con A...

En este estudio se caracterizó y determinó los parámetros cinéticos relacionados a la degradabilidad de la materia seca (MS) de los forrajes nativos: Festuca dolichophylla (Fd), Sipa obtusa (Sob), Calamagrostis sp (Csp), Stipa ichu (Sich) y Muhlenbergia ligularis (Mli), en el primer estomago de 3 alpacas con fistula permanente, durante los meses de invierno. Se incubaron 2,500 a 2,505 g de material vegetal durante 6, 24 y 72 horas (h), calculando las fracciones solubles en t0. El tipo de forraje afectó la degradabilidad de MS, a tasas de pasaje del 2, 5 y 8% /h. Los coeficientes insolubles potencialmente degradables (b) e indigestibles (i) presentaron una variación mínima en la MS, con tasas de degradación (c) bajas. Los meses de invierno hicieron variar la (c) de MS entre 0,3 y 1%/h, donde Fd, Sob y Cps, mostraron coeficientes superiores al 50% a una tasa de pasaje del 2% /h, lo...

This research was serialized in the Laboratory of Animal Nutrition and Food Evaluation (LUNEA) of the Professional School of Zootechnics of the National University of Huancavelica, Peru, with the objective of estimating the consumption of forage barley silage with levels of potato foliage (Solanum tuberosum) and wheat bran from neutral detergent fiber. Forage barley samples with a chopped size of 4 to 6 cm were used, where potato foliage and wheat bran were added at different levels 0, 10, 20 and 30%. The chopped material was ensiled in bag-type mini-silos with a capacity of 5 kg for 30 days. After the fermentation time, the mini-silos were opened and samples were taken to evaluate the neutral detergent fiber and apply the prediction equation for consumption. of dry matter (CMS). An analysis of variance was used for the variables under study. The %FND was in the range of 47.29±4.03% to ...

The aim of this study was to evaluate the effects of the yeast Saccharomyces cerevisiae as an additive for the preparation of oat and barley silage in two fermentation times (21 and 42 days). Oat and barley minisilos were prepared using four levels of yeast (0, 15, 30 and 45 g/kg FV). The minisilos were opened at 21 and 42 days. Three silage replicates were prepared for each combination of silage x yeast level x silage time. The bromatological composition values of the oat silage in terms of crude protein (CP), mineral matter (MM), neutral detergent fibre (NDF), acid detergent fibre (FDA), ethereal extract (EE) and pH increased when the yeast was added in relation to the control, but the dry matter (DM) decreased. The quality of the barley silage in terms of DM, CP, NDF, FDA and EE improved when adding 30 and 45 g/kg of yeast, compared to the control; however, it decreased for EE and pH....