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Digestibility of Heat Treated Barley in Blue Fox and Mink Korhonen, Hannu T; Niemelä, Paavo
EDUCARE Vol 7, No 1 (2014)
Publisher : EDUCARE

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Abstract

ABSTRACT: Carbohydrates are easy accessible raw material for fresh feed in domestic animal production. Barley, which mainly contains carbohydrates, has become more popular as an ingredient in feed for fur bearing animals in particular. The aim of the present study was to clarify the effects of heat treatment on digestibility of barley in farm-raised juvenile blue fox and mink. Two different heat treatments were compared here: (1) traditional heat treatment; and (2) specific treatment, including exposure to pressure and heat, and by gelatinization. Experimental animals were six adult males of dark standard-type mink or “neovison vison” and blue fox or “vulpes lagopus”. The digestibility was evaluated by the AIA indicator method with 0.5 silicate (celite 545) serving as an inert indicator. Main components in the study feed were slaughter-house offal, Baltic herring, barley, and water. Ash content was higher in specific than in traditional diet (p < 0.001). Crude protein content tended to be slightly higher in specific diet. In blue fox and mink, digestibility of crude protein and fat were similar in traditional and specific diet (p > 0.005). Digestibility of carbohydrates and organic matter was significantly (p < 0.01) better for specific than traditional diets. Heat treatment including gelatinization can be recommended to use for better utilization of carbohydrate stuff in the diet.KEY WORDS: Farmed furbearers, mink and blue fox, heat treatment, feed ingredients, fur farming, carbohydrate, and digestive value.  About the Authors: Prof. Hannu T. Korhonen, Ph.D. and Paavo Niemelä, Ph.D. are Principal Research Scientist and Docent in Applied Zoology at the MTT Agrifood Research Finland, Animal Production Research, Silmäjärventie 2,  FIN-69100 Kannus, Finland. For academic purposes, corresponding author is: hannut.korhonen@mtt.fiHow to cite this article? Korhonen, Hannu T. & Paavo Niemelä. (2014). “Digestibility of Heat Treated Barley in Blue Fox and Mink” in EDUCARE: International Journal for Educational Studies, Vol.7(1) August, pp.43-48. Bandung, Indonesia: Minda Masagi Press and UMP Purwokerto, ISSN 1979-7877. Chronicle of the article: Accepted (March 20, 2014); Revised (May 30, 2014); and Published (August 17, 2014).
A Questionnaire Study on Euthanasia in Farm-Raised Mink Korhonen, Hannu T; Sepponen, Juhani; Eskeli, Pekka
EDUCARE Vol 5, No 2 (2013)
Publisher : EDUCARE

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Abstract

ABSTRACT: A questionnaire was formulated to collect data on euthanasia procedures and routines in farmed mink. The principle aim was to clarify the extent and functionality of the main killing methods, i.e. filtered exhaust and cylinder CO (carbon monoxide) and cylinder CO2 (carbon dioxide). The questionnaire was sent to 397 mink farms in Finland and to 143 in the Netherlands. The final response rates were 34.3% for Finland and 24.5% for the Netherlands. The farms in the Netherlands were typically larger than those in Finland. The preferred method of euthanasia in the Netherlands is cylinder CO, which has been shown to work well in that countrys farming system. In Finland, the filtered exhaust CO killing method has a long history, and farmers have grown accustomed to using this special method. The results were as follows: 20.0% of farmers listened outside the killing box, and when there was no sound, they presumed the animals were dead; 20.0% of farmers checked the state of the animals through the inspection window of the box before opening it; 80.0% of farmers waited for 5 minutes or more after the last mink was put into the box before emptying it; 45.7% farmers inspected each individual mink when emptying the box, checking for breathing and movement; and 14.3%  of farmers inspected the mink at the cooling site, checking for breathing and movement. The replies to our questionnaire study suggest that farmers consider that all three euthanasia methods, cylinder CO, cylinder CO2 and filtered exhaust CO are effective and useful ways of killing mink in farming practice.KEY WORDS: Mustela vison, killing methods, social welfare, gas euthanasia, fur farming, and Finland and Netherlands’ farmers. About the Authors: Hannu T. Korhonen, Juhani Sepponen and Pekka Eskeli are Principal Research Scientists and Ph.D. Docents in Applied Zoology, Animal Production Research, MTT (Agrifood Research Finland) Silmäjärventie 2, 69100 Kannus, Finland. The authors can be contacted via e-mail at: hannu.t.korhonen@mtt.fiHow to cite this article? Korhonen, Hannu T., Juhani Sepponen & Pekka Eskeli. (2013). “A Questionnaire Study on Euthanasia in Farm-Raised Mink” in EDUCARE: International Journal for Educational Studies, Vol.5(2) February, pp.241-250. Bandung, Indonesia: Minda Masagi Press owned by ASPENSI in Bandung, West Java; and FKIP UMP in Purwokerto, Central Java, ISSN 1979-7877.Chronicle of the article: Accepted (December 20, 2012); Revised (January 25, 2013); and Published (February 17, 2013). Â