Journal of Oil Palm Research Vol. 32 (4) December 2020, p. 639-646 EDISON MAZÓN PAREDES*; MARCELINO HERRERA RODRÍGUEZ**; CARLOS MAZÓN PAREDES*; ANTÓN GARCÍA MARTÍNEZ‡ ; MANUEL DELGADO PERTIÑEZ‡‡ and JOSÉ LUIS GUZMÁN GUERRERO‡‡‡
Received: 18 November 2019 Accepted: 5 April 2020 Published Online: 7 October 2020
Ecuador has a variety of agroindustrial by-products, which can be used in animal feed, although their nutritional values are often unknown. The objective of this study was to evaluate bromatological composition of palm kernel cake (PKC) in samples from two palm oil extraction plants in two areas (Quevedo and Santo Domingo) and two production periods (August and September). Random samples were taken weekly with two repetitions for a total of 64 samples. Dry matter (DM), ash, organic matter (OM), crude protein (CP), ether extract (EE), crude fibre (CF), nitrogen-free extract (NFE), neutral detergent fibre (NDF), acid detergent fibre (ADF), acid detergent lignin (ADL), calcium, phosphorus, crude energy (CE) and metabolisable energy (ME) were determined. OM (62.92%) and EE (10.10%) content were higher at the Quevedo plant, while CF (23.84%) and ADL (24.66%) were higher at the Santo Domingo plant. The sampling period affected DM (98.58%), CF (23.98%) and ADL (23.78%) content, which were higher in September, while EE (10.87%) and phosphorus (0.44%) were higher in August. For CP, NFE, NDF, ADF, ash, calcium, CE and ME, interaction was observed between the two factors studied. It was concluded that most of the parameters analysed depend on the place of origin or the extraction season, or interaction between the two factors.KEYWORDS:
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* School of Zootechnical Engineering,
Faculty of Livestock Sciences,
Quevedo State Technical University,
Km 6½ via a El Empalme cruce a Mocache,
120501 Quevedo, Los Rios, Ecuador.
** Department of Aquaculture, Agricultural and Fisheries
Research and Training Institute (IFAPA),
Km 4, Carretera El Rompido-Punta Umbria,
21450 Cartaya, Huelva, Spain.
‡ Faculty of Veterinary Medicine,
University of Cordoba,Campus de Rabanales,
s/n 14071 Cordoba, Spain.
‡‡ Department of Agroforestry Sciences,
Higher Technical School of Agronomic Engineering,
Sevilla University, 41013 Sevilla, Spain.
‡‡‡ Department of Agroforestry Sciences,
University of Huelva, Campus de la Rabida,
21819 Palos de la Frontera, Huelva, Spain.