Journal of Biological and Environmental Sciences

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Browsing by Department "Biyokimya Bölümü"

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    The effects of ozone and chlorine applications on microbiological quality of chickens during processing
    (Uludağ Üniversitesi, 2007-12-01) Hecer, Canan; Balcı, Faruk; Udum, Cevahir Duygu; Veteriner Fakültesi; Gıda Teknolojisi Bölümü
    In this study, effects of two antimicrobial applications (ozone and chlorine) on broiler carcasses after evisceration were investigated. The ozone and chlorine (sodium hypochlorite, NaHClO) were applied to broiler carcasses as 1.5 ppm and 30 ppm for 7 minutes, respectively. During the broiler processing, the samples were taken from 14 different points in the production line, 17 surface points and 5 workers’ hands for the microbiological analyses as ten replicates. At the beginning, Escherichia coli growth was not observed after ozone treatment. But, E. coli growth increased after portioning and grading of broiler carcasses. It is assumed that workers’ hands and equipment can be a source of secondary contamination. Ozone can also be used in lower concentration and more safely than the chlorine.
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    Effects of plasma insulin, glucose and NEFA concentrations of feeding frequency during long term in lambs
    (Uludağ Üniversitesi, 2008) Udum, C. Duygu; Cetin, Meltem; Balcı, Faruk; Güneş, Nazmiye; Hecer, Canan; Veteriner Fakültesi; Zootekni Bölümü
    In ruminants, very little is known about the physiological background of the mechanisms involved in feed intake regulation. Mechanisms that control feed intake exist in ruminants but the exact nature of the control systems are not well understood. For this reason, the effects of different feeding regimens, and the initiation/termination of feeding on blood glucose, insulin, and NEFA were measured in lambs fed once, two times daily and fed ad libitum. To determine insulin hormone influence on feed intake, blood was sampled before 30 minutes of feeding (08:30) and after 1 hour of feeding (10:00) in the morning, and collected 14:00, before 30 minutes of feeding (15:30), after 1 hour feeding (17:00). In the different times fed lambs, plasma insulin levels had a significant change (P<0.05) between groups and between sampling times(P<0.05) but glucose and NEFA levels had no significant changes among groups. We have demonstrated for the first time that modification of feeding regimen could affect plasma insulin levels.