Fish silage oil from rainbow trout processing waste as alternative to conventional fish oil in formulated diets for Mozambique tilapia Oreochromis mossambicus

Goosen, Neill J.; Wet, Lourens Francois de; Görgens, Johann F.; Jacobs, Karin; Bruyn, Anneke de

doi:10.1016/j.anifeedsci.2013.10.019

Cited by 26 publications

(37 citation statements)

References 29 publications

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“…Gross intestinal morphology of the mid-intestine of experimental animals was monitored according to the methods described previously (Goosen et al 2014c). …”

Section: Intestinal Morphologymentioning

confidence: 99%

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Comparison of hydrolysed proteins from different raw materials in diets for Mozambique tilapia Oreochromis mossambicus

2014

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The study aimed to compare three fish protein hydrolysates (FPH) from different origins as dietary ingredients for Mozambique tilapia Oreochromis mossambicus. The ingredients were self-prepared fish silage from rainbow trout viscera and two commercial FPH products from shrimp and mixed marine by-products. Each ingredient was further included at two dietary levels: a low level where hydrolysed protein contributed 20 g kg -1 protein to the diet and a high level where protein contribution was 40 g kg -1 . It was found that all three FPH products sustained high specific growth rates in excess of 2.5 % of body weight per day at both inclusion levels and that there were no negative impacts on production performance, animal health or intestinal gross morphology compared to the control. Further, there were no significant differences in specific growth rate, feed conversion, dress-out %, non-specific immunity parameters or intestinal morphology between any treatments. However, low inclusion of FPH from mixed marine origin (treatment HCL) showed significantly higher growth than high inclusion of self-prepared silage (treatment SH) through significantly higher final animal length and height; a simultaneous significant decrease in Jones condition factor in treatment HCL might be explained by a change in animal body composition. It is concluded that all FPH products were acceptable feed ingredients at the inclusion levels investigated; however, differences in animal growth seen between treatments HCL and SH might be the result of the different inclusion levels employed, and the FPH raw material origin. Further, interpretation of animal condition factor should also take into account supplementary trial data, as differences between treatments might not signify differences in animal well-being, but rather changes in body composition.

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“…Gross intestinal morphology of the mid-intestine of experimental animals was monitored according to the methods described previously (Goosen et al 2014c). …”

Section: Intestinal Morphologymentioning

confidence: 99%

“…The blood serum was recovered for the determination of lysozyme, total protein and immunoglobulin concentration, as described previously (Goosen et al 2014c). A portion of the blood was put into heparin-treated Eppendorf tubes and used to determine the haematocrit values using glass capillaries in a haematocrit centrifuge.…”

Section: Animal Health Statusmentioning

confidence: 99%

Comparison of hydrolysed proteins from different raw materials in diets for Mozambique tilapia Oreochromis mossambicus

2014

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“…Los ensilajes evaluados presentan altos porcentajes de ácidos grasos insaturados (tabla 4). Debido al gran contenido de ácidos grasos poliinsaturados que presentan los ensilajes, estos pueden ser utilizados como sustituto del aceite de pescado comercial o los de origen vegetal en las dietas para la alimentación animal; además, la solubilización excesiva de la proteína puede ser reducida por los lípidos del ensilaje, lo que puede mejorar su calidad [34].…”

Section: Eln = 100 -(Pc + Cenizas + Ee + Fdn)unclassified

Evaluación de procesos para obtener ensilaje de residuos piscícolas para alimentación animal

et al. 2017

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ResumenEn el estudio se evaluaron procesos para la obtención de ensilaje de residuos de Trucha arcoíris (Oncorhynchus mykiss) como alternativa para alimentación animal; para ello se utilizaron ocho tratamientos: cuatro ensilajes químicos, vísceras enteras + ácido fórmico, vísceras enteras + ácido acético, vísceras molidas + ácido fórmico, vísceras molidas + ácido acético; y cuatro biológicos; vísceras enteras + melaza, vísceras enteras + harina de yuca, vísceras molidas + melaza y vísceras molidas + harina de yuca; bajo un diseño completamente al azar. Las variables determinadas fueron pH, acidez titulable, consistencia, perfil microbiológico y la caracterización nutricional mediante análisis de composición química y pruebas de digestibilidad in vitro. Para el pH, los tratamientos con adición de ácido fórmico presentaron valores inferiores (3.26); para la acidez titulable, los tratamientos con inclusión de melaza generaron porcentajes más altos (3.78 y 3.56%), los ensilados preparados con vísceras enteras lograron un grado de licuefacción mayor (9.75 -20.38 cm/30s), la digestibilidad in vitro de la materia seca de los ensilajes estuvo por encima del 96% y esta fue equivalente a la encontrada en la harina de pescado. Los ensilajes constituyen una alternativa de buena calidad para alimentación animal debido al contenido de nutrientes que presentan.Palabras clave: caracterización nutricional, ensilaje biológico, ensilaje químico, residuos de pescado.

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“…The silage oil recovered from rainbow trout processing waste as an alternative fish oil source for fish feeding and reported that silage oil with good source of PUFA content successfully substituted with commercial oil without adverse effect on growth parameters (Goosen et al, 2014). The silage oil recovered from rainbow trout processing waste as an alternative fish oil source for fish feeding and reported that silage oil with good source of PUFA content successfully substituted with commercial oil without adverse effect on growth parameters (Goosen et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

“…Recovery of fish oil from fish silage produced from fish wastes may also be an alternative source for human consumption. The silage oil recovered from rainbow trout processing waste as an alternative fish oil source for fish feeding and reported that silage oil with good source of PUFA content successfully substituted with commercial oil without adverse effect on growth parameters (Goosen et al, 2014). For preparing animal feed from seafood processing wastes and discard fish, fish silage technique has many advantages like easy production, low investment, energy and labour.…”

Section: Introductionmentioning

confidence: 99%

Fatty acid composition and oxidative stability of oils recovered from acid silage and bacterial fermentation of fish (Sea bass – Dicentrarchus labrax) by‐products

Özyurt

Özkütük²,

Uçar

et al. 2017

Int J of Food Sci Tech

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Summary Lipid quality and fatty acid compositions of fish oils recovered from fish (Sea bass – Dicentrarchus labrax) waste silages produced with formic acid (FA) and five different LAB strains (Lactobacillus plantarum (LP), Pediococcus acidilactici (PA), Enterococcus gallinarum (EG), Lactobacillus brevis (LB) and Streptococcus spp. (ST)) were assessed to ensure for the usage for human consumption. Generally, it was observed that there were no significant differences between PUFA contents (23.27–23.64%). Peroxide (PV) (2.12 meq active O2/per kg of oil) and TBA values (1.07 mg malonaldehyde (MA) g−1 oil) of fish oils from acid silage were significantly higher than those of the fermented ones (1.14–1.91 meq active O2 kg−1, 0.67–0.81 mgMA g−1 oil, respectively). Anisidine values (AV) were determined in range of 8.04–11.14 for fermented silages and 13.08 from acid silage. The highest totox value (17.33 ± 0.88) was also detected in acid silage oil whereas fermented groups gave totox value in the range of 10.40–13.88. It can be concluded that the initial lipid quality of fermented fish waste silages was better than the initial lipid quality of acid fish waste silage. Therefore, fish oils recovered from fermented silages can be used as food additives or supplements for animal and human diets.

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Fish silage oil from rainbow trout processing waste as alternative to conventional fish oil in formulated diets for Mozambique tilapia Oreochromis mossambicus

Cited by 26 publications

References 29 publications

Comparison of hydrolysed proteins from different raw materials in diets for Mozambique tilapia Oreochromis mossambicus

Comparison of hydrolysed proteins from different raw materials in diets for Mozambique tilapia Oreochromis mossambicus

Evaluación de procesos para obtener ensilaje de residuos piscícolas para alimentación animal

Fatty acid composition and oxidative stability of oils recovered from acid silage and bacterial fermentation of fish (Sea bass – Dicentrarchus labrax) by‐products

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