Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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    Determining tolerance of Japanese quail to different dietary fat peroxidation values by supplementation with Rosemary and Aloe Vera on performance and meat quality
    Ghasemi-Sadabadi, Mohammad ; Veldkamp, Teun ; Krimpen, Marinus van; Ebrahimnezhad, Yahya ; Ghalehkandi, Jamshid Ghiasi ; Salehi, Alireza ; Didehvar, Mirmojtaba ; Khodaei, Mohammadreza ; Mehdizadeh, Amin - \ 2020
    Animal Feed Science and Technology 267 (2020). - ISSN 0377-8401
    Antioxidant - Growth performance - Japanese quail - Meat quality - Peroxide value oil

    Tolerance of Japanese quail to different dietary fat peroxidation values (PV) in combination with supplementation of antioxidants was investigated. In total 1200 Japanese quail were divided into 16 treatment groups in a 4 × 4 factorial design. The diets were supplemented with 4 % soybean oil differing in peroxidation values (2.06, 45.18, 101.99 and 146.03 (meq/kg) and the antioxidant treatment including: no antioxidant, Rosemary powder, Aloe Vera gel powder, and commercial antioxidant. Dietary inclusion of high PV oil decreased body weight gain (BWG) and feed intake (FI) of quails at all period. Feed conversion ratio (FCR) was increased during the whole period by dietary inclusion of high PV oil (P < 0.05). The supplementation of Rosemary and Aloe Vera increased BWG at 22−35 and 7−35 days (P < 0.05). Different PV oils had a significant effect on the carcass yield, abdominal fat, and intestine weight (P < 0.05). Rosemary and Aloe Vera gel supplementation decreased abdominal fat and increased intestine weight in quail (P < 0.05). Higher PV oil decreased blood glucose, total protein, IgM and IgG also increased blood cholesterol, triglyceride, and LDL. Rosemary and Aloe Vera gel supplementation increased blood glucose (P < 0.05). Blood AST, ALT, and MDA were increased in the quails fed higher PV oil but higher PV oil decreased the levels of SOD and GPx activity (P < 0.05). The blood AST and MDA concentrations of quails declined with antioxidants supplementation, Furthermore Rosemary and commercial antioxidant increased SOD activity (P < 0.05). Dietary inclusion of higher PV oils in diets decreased villus height of quails (P < 0.05). Higher PV oils increased PV and thiobarbituric acid in meat in quails when compared to lower PV oil. Furthermore, PV and thiobarbituric acid in meat was lower in antioxidants supplementation when compared to the non-supplementation group (P < 0.05). Quails fed highly PV oil showed lower PUFA and higher SFA in meat compared with those fed low PV oil. The use of antioxidants in this study increased PUFA and decreased SFA in meat (P < 0.05). Significant interaction effects were observed between antioxidants and different PV oils on blood AST and MDA activity and PV in meat. These results suggest that diet PV oil over 2.06 PV meq/kg reduced the growth performance of quails. Furthermore, the use of antioxidants improved the growth performance, however, no significant interaction effects between different PV oil and antioxidants were found on growth performance. Therefore antioxidants could not prevent the negative effects of high PV oil.

    Evaluation of watershed health using Fuzzy-ANP approach considering geo-environmental and topo-hydrological criteria
    Alilou, Hossein ; Rahmati, Omid ; Singh, Vijay P. ; Choubin, Bahram ; Pradhan, Biswajeet ; Keesstra, Saskia ; Ghiasi, Seid Saeid ; Sadeghi, Seyed Hamidreza - \ 2019
    Journal of Environmental Management 232 (2019). - ISSN 0301-4797 - p. 22 - 36.
    Analytical network process - Fuzzy theory - Multi-criteria decision analysis (MCDA) - Soil erosion - Watershed health

    Assessment of watershed health and prioritization of sub-watersheds are needed to allocate natural resources and efficiently manage watersheds. Characterization of health and spatial prioritization of sub-watersheds in data scarce regions helps better comprehend real watershed conditions and design and implement management strategies. Previous studies on the assessment of health and prioritization of sub-watersheds in ungauged regions have not considered environmental factors and their inter-relationship. In this regard, fuzzy logic theory can be employed to improve the assessment of watershed health. The present study considered a combination of climate vulnerability (Climate Water Balance), relative erosion rate of surficial rocks, slope weighted K-factor, topographic indices, thirteen morphometric characteristics (linear, areal, and relief aspects), and potential non-point source pollution to assess watershed health, using a new framework which considers the complex linkage between human activities and natural resources. The new framework, focusing on watershed health score (WHS), was employed for the spatial prioritization of 31 sub-watersheds in the Khoy watershed, West Azerbaijan Province, Iran. In this framework, an analytical network process (ANP) and fuzzy theory were used to investigate the inter-relationships between the above mentioned geo-environmental factors and to classify and rank the health of each sub-watershed in four classes. Results demonstrated that only one sub-watershed (C15) fell into the class that was defined as ‘a potentially critical zone’. This article provides a new framework and practical recommendations for watershed management agencies with a high level of assurance when there is a lack of reliable hydrometric gauge data.

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