Listar Ciencias agroalimentarias por título
Mostrando ítems 1126-1145 de 2375
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Feasibility of individual carotenoid quantification in mixtures using UV-Vis spectrophotometry with multivariate curve resolution alternating least squares (MCR-ALS)
(2022-02-09)A fast and low-cost analytical method to determine the concentrations of carotenoids (β-carotene, lutein, and lycopene) from mixed standard solutions or from fruit extracts (kiwi fruits, tomato paste, pink grapefruit juice, ... -
Feeding and Nutrition of Anteaters
(2011-05-02)The superorder Xenarthra (former Edentata) is grouped into two orders, Cingulata (armadillos) and Pilosa (anteaters and sloths). These are special mammals that show unique traits: (1) the existence of secondary articulations ... -
Feeding behavior and preference of horses fed rhizome peanut hay
(2021)Rhizoma peanut (RP, Arachis glabrata Benth) has been used as alternative legume hay for horses; however, feeding behavior and preference of horses fed this hay in comparison to other commonly fed hays war- rant investigation. ... -
Feeding colostrum with an esophageal feeder does not reduce immunoglobulin G absorption in neonatal dairy heifer calves
(2011-12)Although the use of esophageal feeders is commonly recommended to aid in timely provision of colostrum to calves, there are few published studies that compare their effectiveness with other feeding methods. Therefore, ... -
Feeding heat-treated colostrum or unheated colostrum with two different bacterial concentrations to neonatal dairy calves
(2009)The objective of this study was to determine the effects of feeding heat-treated colostrum or unheated colostrum of different bacterial counts on passive transfer of immunity in neonatal dairy calves. First milking colostrum ... -
Feeding heat-treated colostrum to neonatal dairy heifers: Effects on growth characteristics and blood parameters
(2009)Newborn Holstein heifer calves were studied to compare absorption of immunoglobulin G (IgG1 and IgG2), total serum protein concentration, lymphocyte counts, health scores, growth, and starter intake after receiving ... -
Fertilidad química de suelos en fincas de ganado lechero ubicadas en la Cordillera Volcánica de Guanacaste, Costa Rica
(2015-12)El objetivo de esta investigación fue determinar la fertilidad de los suelos de fincas lecheras de cuatro zonas de la Cordillera Volcánica de Guanacaste. El estudio se llevó a cabo durante un periodo de dos años (2009-2010) ... -
Fertilización con nitrógeno y potasio en maíz en un Alfisol de Guanacaste, Costa Rica
(2021)Introducción. En Guanacaste, Costa Rica, el maíz (Zea mays) es un cultivo de consumo cultural desde épocas precolombinas, muchos agricultores destinan zonas para su siembra en asocio con otros cultivos. Sin ... -
Fertilización de morera (Morus alba) para alimentación animal: Reduciendo costos y disminuyendo la contaminación ambiental
(2008)En nuestro medio existen numerosas especies forrajeras que presentan excelentes características de calidad nutritiva, disponibilidad, producción de biomasa y versatilidad agronómica. La morera (Morus alba), perteneciente ... -
Fertilización nitrogenada en pastos del género Cynodon
(2022)La fertilización nitrogenada de pasturas es una práctica agronómica utilizada para incrementar el rendimiento en forrajes. En esta investigación se revisó literatura en distintos países de América con el ... -
Fichas de forrajes (piso, corte, arbustivas)
(2020)Documento realizado en el marco del Proyecto de la Red Nacional de Pastos y Forrajes, Coordinado por Cámara Nacional de Productores de Leche. Poryecto: Validación y transferencia de casos de éxito, técnicas y variedades ... -
Field performance of hermaphrodite papaya plants obtained through molecular selection and micropropagation
(2019)Most commercial papaya varieties segregate hermaphrodite and female plants. Growers normally select hermaphrodite plants in the field, due to market preferences. This requires planting multiple plants per site and later ... -
Field Survey of Cucumber mosaic virus Subgroups I and II in Crop Plants in Costa Rica
(2001-09)Leaf samples were collected from cucurbit and solanaceous crop plants and Musa spp. in 28 locations in five provinces of Costa Rica during the period from January to October 1996. Sampling sites were selected in dry, humid, ... -
First insights into the prokaryotic community structure of Lake Cote, Costa Rica: Influence on nutrient cycling
(2022-10-03)Prokaryotic diversity in lakes has been studied for many years mainly focusing on community structure and how the bacterial assemblages are driven by physicochemical conditions such as temperature, oxygen, and nutrients. ... -
First Report of an Aster Yellows Subgroup 16SrI-B Phytoplasma Infecting Chayote in Costa Rica
(2002-03)An outbreak of a witches' broom disease affected approximately 20% of plants in several chayote (Sechium edule (Jacq.) Schwartz) fields in the commercial production area of the Ujarrás Valley, Cartago Province, Costa Rica ... -
First Report of Citrus Blight in Costa Rica
(2005-01)Citrus blight (CB), causing a chronic decline of citrus, has been an important disease in Florida for over 100 years. CB was first reported in Brazil in the 1980s and is now responsible for the removal of nearly 10% of the ... -
First Report of Citrus variegation virus in Palestine Sweet Lime, as Coffee Shade in Costa Rica
(2011)Symptoms resembling those of Citrus variegation virus (CVV) were observed in old Palestine sweet lime trees (Citrus limettioides Tan.) used as coffee shade in the Central Valley in Costa Rica. The symptoms include leaf ... -
First report of Iris yellow spot virus in Costa Rica
(2017)Iris yellow spot virus (IYSV), an emerging disease of onion crops, was identified by transmission electron microscopy, enzyme linked immunosorbent assay, and reverse transcription polymerase chain reaction in Costa Rica. ... -
First Report of New Phytoplasma Diseases Associated with Soybean, Sweet Pepper, and Passion Fruit in Costa Rica
(2009-02)A new soybean disease outbreak occurred in 2002 in a soybean (Glycine max) plantation in Alajuela Province, Costa Rica. Symptoms on the affected plants included general stunting, small leaves, formation of excessive buds, ...