Analysis of pellet degradation of extruded high energy fish feeds with different physical qualities in a pneumatic feeding system

Synnøve, Turid; Oehme, Maike; Sørensen, Mette; He, Gaojie; Lygren, Ingolf; Åsgård, Torbjørn

doi:10.1016/j.aquaeng.2010.11.002

Cited by 64 publications

(64 citation statements)

References 26 publications

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“…Esta técnica simula las tensiones a las que son expuestos los pellets en los dispositivos de alimentación neumática. Este aparato está diseñado con un tornillo Arquímedes que alimenta los pellets a un aspa simulando el proceso de degradación de los pellets por impacto y cizalla (Aas et al, 2011b). Morken et al (2011) usaron el Doris Tester para determinar la durabilidad de harina de pescado con diferentes formulaciones y condiciones de procesado.…”

Section: Dorisunclassified

Parámetros de Calidad y Metodologías para Determinar las Propiedades Físicas de Alimentos Extruidos para Peces

et al. 2017

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ResumenEl presente trabajo relaciona los métodos tradicionales usados para analizar la calidad física de un alimento extruido para peces, como dureza, durabilidad, estabilidad en agua, velocidad de hundimiento, densidad aparente, capacidad de absorción-pérdida de aceite y porosidad como métodos para en el control de su producción a nivel industrial. Las propiedades físicas de los pellets son relevantes para la toma de decisiones relacionadas con las condiciones de procesamiento, transporte, almacenamiento, aprovechamiento biológico del animal y evaluación de nuevas materias primas y aditivos. Existen diversos métodos para determinar la calidad física de los pellets. Sin embargo, en su mayoría se relacionan con alimentación de animales terrestres, los cuales no son apropiados para la alimentación de peces. Estos requieren condiciones de resistencia al estrés mecánico y al mismo tiempo presentar una textura y tamaño que facilite la ingesta adecuada del alimento en el agua. Palabras clave: dureza; durabilidad; velocidad de hundimiento; densidad aparente; porosidad Physical Quality of Extruded Aquafeeds. Effect of Formulation and Processing Conditions AbstractThe present work relates the traditional methods used to analyze the physical quality of fish extruded food, such as hardness, durability, water stability, sinking speed, bulk density, oil absorption and loss capacity and porosity as methods for the control of Its production at an industrial level. The physical properties of the pellets are relevant for decision making related to the conditions of processing, transport, storage, biological use of the animal and evaluation of new raw materials and additives. There are several methods for determining the physical quality of the pellets. However, they are mostly related to feeding of terrestrial animals, which are not suitable for feeding fish. These require conditions of resistance to mechanical stress and at the same time should have a texture and size that facilitates the adequate intake of food in the water. (FAO, 2013). La harina y aceite de pescado son los alimentos de mayor demanda en este sector, sin embargo, actualmente se están investigando alimentos para peces a base de ingredientes alternativos como plantas, microorganismos y otras fuentes de proteína animal (Sørensen, 2012). Para estos desarrollos es muy importante la calidad fisicoquímica y estructural de los alimentos alternativos siendo algunas de las pruebas más comunes la fuerza de tensión a la fractura, dureza, durabilidad, estabilidad en agua, velocidad de hundimiento, densidad aparente, absorción y pérdida de grasa (Thomas y van der Poel, 1996; Sørensen, 2012). Algunos autores como Hilton et al. (1981) han estudiado diferentes procesos de obtención de pellets como extrusión y peletizado por vapor, observando que los pellets extruidos eran más durables, tenían mayor estabilidad en agua y absorbían mayor cantidad de agua. Otros aspectos importantes a tener en cuenta son las condiciones de proceso y los ingredientes usados en las formulaciones (...

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Section: Dorisunclassified

Parámetros de Calidad y Metodologías para Determinar las Propiedades Físicas de Alimentos Extruidos para Peces

et al. 2017

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“…These pellet characteristics may be central because dietary moisture may improve feed intake and growth and be related to disintegration of feed pellets. The decreasing durability and increasing dust formation at DM above 92% indicate that low water content could potentially create pellet breakage leading to feed spill (Aas et al, 2011a). Such feed spill caused by small particles and fines may reduce feed intake and feed utilization at commercial fish farms.…”

Section: Measurement Of Physical Feed Qualitymentioning

confidence: 99%

“…The controlled feeding routines used in the present experiment were not expected to create fines compared to large scale facilities. However, available methods used to analyze physical feed quality did not correlate with pellet degradation in pneumatic feeding system (Aas et al, 2011a). To reduce feed spill and increase feed intake and feed utilization it is important to produce pellets with a compromised physical quality to balance losses related to feed transport and conveying against potential negative effects on fish performance.…”

Section: Measurement Of Physical Feed Qualitymentioning

confidence: 99%

“…To deal with these large volumes, feed often is transported in bulk. At the farm, feed is often kept in large silos and conveyed with use of pneumatic feeding systems to the cages (Aas et al, 2011a, Oehme et al, 2012. Developments in feed transportation have increased the mechanical impacts on feed pellets.…”

Section: Introductionmentioning

confidence: 99%

“…Feed producers thus need to produce feeds with high pellet quality to avoid pellet breakage. Pellet breakage represents loss of valuable feed resources and has consequences for the cost-efficiency of salmon production (Aas et al, 2011a).…”

Section: Introductionmentioning

confidence: 99%

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Effects of dietary moisture content of extruded diets on physical feed quality and nutritional response in Atlantic salmon (Salmo salar)

et al. 2014

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Feed pellets in modern aquaculture must be of high physical quality to withstand mechanical impacts. However, physical quality of feed has been shown to affect nutritional responses. In the present study, different moisture contents were used to modify physical feed qualities.Effects of dietary moisture content on physical feed quality, feed intake, nutrient digestibility and growth performance in Atlantic salmon were investigated. Different drying times of four commercial-like extruded diets resulted in in dry matter contents of 95.9%, 94.1%, 92.3%, 90.8%. A fifth diet containing 70% dry matter was made

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Breakage probability of feed pellet under repeated compression and impacts

et al. 2023

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Analysis of pellet degradation of extruded high energy fish feeds with different physical qualities in a pneumatic feeding system

Cited by 64 publications

References 26 publications

Parámetros de Calidad y Metodologías para Determinar las Propiedades Físicas de Alimentos Extruidos para Peces

Parámetros de Calidad y Metodologías para Determinar las Propiedades Físicas de Alimentos Extruidos para Peces

Effects of dietary moisture content of extruded diets on physical feed quality and nutritional response in Atlantic salmon (Salmo salar)

Breakage probability of feed pellet under repeated compression and impacts

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