Examinando por Materia "Pastures"

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Análisis proximal y rendimiento de cinco especies nativas con valor forrajero
(Universidad del Zulia, 2022-01-13) Oliva, Manuel; Meléndez Mori, Jegnes Benjamín; Maicelo Quintana, Jorge Luis; Milla Pino, Manuel Emilio; Leiva, Santos
El objetivo del presente estudio fue evaluar el establecimiento, crecimiento, rendimiento y valor nutritivo de cinco especies nativas con valor forrajero (Cenchrus clandestinus, Philoglossa mimuloides, Philoglossa sp., Trifolium dubium y Trifolium repens). El experimento se realizó en el distrito de Molinopampa (Perú), donde se instalaron parcelas de 30 m2. La altura de planta se midió mensualmente hasta los 90 días. El material se cortó a nivel del suelo, se pesó, se secó y se determinaron los rendimientos de forraje verde y materia seca. El valor nutricional de las muestras se realizó siguiendo el procesamiento de la AOAC. Los resultados muestran que el porcentaje de establecimiento más alto fue alcanzado por T. repens (89,51%). La altura de planta mostró que P. mimuloides y Philoglossa sp. registraron su mayor crecimiento entre los días 30 y 60 después del establecimiento; y además fueron las especies con mayores niveles forraje verde (7,46 y 8,04 kg/m2) y materia seca (8,58 y 8,90 t/ha). En términos de valor nutricional, T. dubium y C. clandestinus registraron los niveles más altos de proteína y fibra, respectivamente; mientras que las especies del género Philoglossa tienen mayor digestibilidad.
Evaluation of two methods for estimating dry matter availability in mixed pastures in the Amazon region, Peru
(Estación Experimental de Pastos y Forrajes Indio Hatuey, 2022-01-27) Mas Portocarrero, Walter; Cuzco Mas, Erik; Mathios Flores, Marco Antonio; Angulo Villacorta, Carlos Darwin
En el presente artículo se evaluaron dos métodos para estimar la disponibilidad de materia seca en pastos mixtos en la región Amazónica, Perú; concluyendo que el método de capacitancia electrónica reporto medidas promedio de materia seca en el pasto significativamente superior al método tradicional y mostró características deseables y concordantes para su uso en la actividad ganadera.
Morphological differentiation, yield, and cutting time of Lolium multiflorum L. under acid soil conditions in Highlands
(MDPI, 2024-08-21) Carrasco Chilón, William; Cervantes Peralta, Marieta; Mendoza, Laura; Muñoz Vílchez, Yudith; Quilcate, Carlos; Casanova Nuñez-Melgar, David; Vásquez, Héctor; Alvarez García, Wuesley Yusmein
Livestock production in the basins of the northern macro-region of Peru has as its primary source pastures of Lolium multiflorum L. ‘Cajamarquino ecotype’ (ryegrass CE) in monoculture, or in association with white clover Ladino variety, for feeding. The objective of this research work was the morphological characterisation, yield evaluation, and cutting time evaluation of two local genotypes (LM-58 and LM-43) of Lolium multiflorum L. in six locations. An ANOVA was performed to compare fixed effects and interaction. It was determined that the LM-58 genotype is intermediate, growing semi-erect, with a dark green colouring and 0.8 cm broadleaf, and can reach an average stem length of 46 cm, up to 1.6 cm. day−1, achieving fourth-leaf growth at 28 days under appropriate management conditions. Despite the differentiated characteristics, according to BLASTn evaluation, the ITS1 sequences showed a greater than 99.9% similar identification to Lolium multiflorum L., characterising it as such. It was determined that the LM-58 genotype outperforms LM-43, achieving a forage yield of 4.49 Mg. ha−1, a seed production of 259.23 kg. ha−1, and an average of 13.48% crude protein (CP). The best biomass yield (49.10 Mg. ha−1.yr−1) is reached at 60 days; however, at 30 days, there is a high level of CP (14.84%) and there are no differences in the annual protein production at the cutting age of 60 and 45 days. With the results of the present study, LM-58 from a selection and crossbreeding of 680 ryegrass EC accessions emerges as an elite genotype adapted to the conditions of the northern high Andean zone of Peru.
The effect of hay supplementation on performance of grazing alpaca in the Peruvian Andes
(Kenya Agricultural and Livestock Research Organization, 2022-02-01) Enciso, M.; Gómez, C.; Osorio Zavala, Cesar Mauro
Productivity of alpaca grazing rangelands in the Andes is often limited by the low availability and quality of those pastures during the dry season of the year. The use as supplements of forages cultivated during the rainy season in appropriate areas in the Andes may be a strategy to improve performance of alpacas. Therefore, the supplementation of oat-vetch pellets or oat hay was evaluated and compared with a control group without supplementation. Sixty-three female alpacas (15 months of age, 34 ± 1.0 kg BW), divided in three groups, grazing range pastures (6.1% crude protein and 61.3% NDF) during dry season in Puno region of the Peruvian Andes were used for the study. The supplement was offered daily after grazing (400 g/alpaca/day). The study lasted for 84 days with evaluations of weight gain and intake every 28 days. Weight gain was greater for animals supplemented with oat-vetch pellet (3.1 ± 0.27 kg) compared to oat hay (0.98 ± 0.33) (P≤ 0.05) while the control lost BW (0.64 ± 0.22). The total dry matter intake (pasture and supplement) was 502, 575.6 and 579.5 g / alpaca/ day for the control, oat-vetch pellet and oat hay group respectively indicating partial replacement of pasture by the supplement. Under the study conditions, the supplementation of oat-vetch pellets improved performance better than oats hay or no supplementation for alpacas grazing range pastures during the dry season.