The present study aimed to determine the bromatological composition of the vetch silage associated with barley in five proportions and two levels of urea. A completely randomized design with three repetitions in a factorial scheme of 5 x 2 (proportions, urea) was used. The ratios of vetch and barley were: 0: 100, 25:75, 50:50, 75:25 and 100:0, respectively. Urea was added in 0 and 1% levels on a dry matter basis. Micro silos of PVC tubes 10 cm (diameter) x 60 cm (height) were used for 121 days. Samples were taken from the silos to determine dry matter (DM), crude protein (CP), neutral detergent fibre (NDF), acid detergent fibre (ADF), hemicellulose, mineral matter (MM) and pH. The vetch:barley 50:50, 75:25 and 100:0 without urea had higher DM content than the ammonified silages (p<0.05). The CP increased linearly in the silages with and without urea, especially the vetch/barley ammoni...

The present study aimed to determine the bromatological composition of the vetch silage associated with barley in five proportions and two levels of urea. A completely randomized design with three repetitions in a factorial scheme of 5 x 2 (proportions, urea) was used. The ratios of vetch and barley were: 0: 100, 25:75, 50:50, 75:25 and 100:0, respectively. Urea was added in 0 and 1% levels on a dry matter basis. Micro silos of PVC tubes 10 cm (diameter) x 60 cm (height) were used for 121 days. Samples were taken from the silos to determine dry matter (DM), crude protein (CP), neutral detergent fibre (NDF), acid detergent fibre (ADF), hemicellulose, mineral matter (MM) and pH. The vetch:barley 50:50, 75:25 and 100:0 without urea had higher DM content than the ammonified silages (p<0.05). The CP increased linearly in the silages with and without urea, especially the vetch/barley ammoni...

Este estudio tuvo como objetivo evaluar la composición química bromatológica, las fracciones energéticas, el consumo y digestibilidad de la materia seca e índice del valor forrajero del ensilado de residuo de quinua proveniente de la producción agrícola, conteniendo diferentes niveles de Saccharomyces y melaza. El experimento fue conducido en las dependencias de la Escuela Académico Profesional de Zootecnia de la Facultad de Ciencias de Ingeniería de la Universidad Nacional de Huancavelica. La variedad de quinua blanca que generó el residuo agrícola. Se utilizó el diseño completamente al azar, en esquema factorial de 4 x 4, con cuatro repeticiones. Los factores fueron constituidos por cuatro niveles de Saccharomyces (0, 0.5, 1.0 y 1.5% de la MS) y cuatro niveles de melaza (0, 1.5, 3 y 4.5% de la MS). Los ensilados fueron evaluados cuanto a las concentraciones de materia seca...

La identificación de especies en alimentos de origen animal presenta elevada importancia tanto en cuestiones relacionados con la calidad como con la seguridad alimentaria. La adulteración en los alimentos es relevante por motivos económicos, religiosos, legislativos o de salud pública. El objetivo de este estudio se centró en identificar especies animales (bovino, porcino y equino) en productos cárnicos a fin de determinar la adulteración en la venta de mortadela (MO), hot dog (H.D), chicharon de prensa (C.P), chorizo (CH) y jamonada (JA). El ADN fue extraído de 5 regiones diferentes de cada embutido y se realizó la PCR utilizando primers especie-específico. El amplicón de la PCR de la región especie-específico fue de 271, 212 y 145 pb para bovino, porcino y equino, respectivamente. El H.D fue el único producto amplificado por los primers específicos de bovino. El C.P y CH...

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 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 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...

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....

The effect of including whey in the diet of rams in the fattening stage of the company SAIS Pachacutec S.A.C, located in the central mountains of Peru at an altitude of 4119 m was evaluated. In total, 120 five-month-old Corriedale male rams from the “Cabaña” (n=40), “Plantel” (n=40) and “Majada” (n=40) genetic sections were used. Rams from each section was randomly distributed into four treatment groups (n=10 per group): T1 (0%, control); T2 (15%); T3 (25%) and T4 (35% whey). The whey was added to the concentrate (bran feed). The study included 14 days of adaptation to the feed and 90 days of trial. Final weight, weight gain and carcass weight were significantly different between treatments and sections (p<0.05), being greater in T4 and in the Cabaña section (final weight: 48.7 ± 0.6 kg; weight gain: 379.4 g/day; carcass weight: 20.9 ± 1.2 kg). Carcass yield was simila...