Yazar "Akbag, H. I." seçeneğine göre listele

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    Effects of kefir as a probiotic source on the performance of goat kids
    (South African Journal Of Animal Sciences, 2010) Atasoglu, C.; Akbag, H. I.; Tolu, C.; Das, G.; Savas, T.; Yurtman, I. Y.
    Kefir is a sour, viscous, slightly carbonated and alcoholic milk beverage, which is traditionally fermented using a culture of bacteria and yeasts. The influence of kefir on health has been well studied in mice and rats. However, research on kefir use in ruminants is rather limited. The aim of this study was to investigate the effect of kefir as a probiotic on the performance of goat kids during the pre- (45 days) and post-weaning (45 days) periods. Forty eight kids were randomly allocated to four treatment groups: Control, Kefir, Auto-Kefir (autoclaved) and Probiotic (a commercial probiotic). The kids were weaned at 45 days of age. The supplementation of different probiotics did not have any significant effect throughout the study on live weight and weight gain of the kids as compared to the Control group. Milk intake or milk-based nutrient intake of kids did not differ significantly among treatments in the pre-weaning period. Similarly, the intake of concentrate feed and nutrients from the concentrate was not affected by the treatments during post-weaning. No significant differences in faecal consistency of kids were found among the treatments. The results of the study indicated that supplementation of kefir as a natural probiotic or a commercial probiotic source does not improve performance of goat kids under the conditions in the present study and suggest that new approaches are required for studying the efficacy of this probiotic.
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    Growth, behavioural and haematological responses to poultry red mite infestation in Japanese quail
    (Eugen Ulmer Gmbh Co, 2020) Erdem, H.; Konyali, C.; Akbag, H. I.; Savas, T.
    The aim of the study was to investigate the effects of poultry red mite (PRM) infestation on Japanese quail. Two trials were carried out under same conditions, each using 80 one-week-old quail chicks. Half of the chicks were experimentally infested with PRM and the other half functioned as control group. The conditions of the two trial rooms were the same. Low infestation was observed in Trial I, while high infestation was seen in Trial II. Live weight (LW) and daily feed intake (DFI) were not significantly affected in Trial I (P = 0.2190). However, infested birds scratched themselves 2.46 times more than the control birds (P = 0.0002). Haemoglobin (Hg) of control and infested birds were 9.58 g.dl(-1) and 7.72 g.dl(-1) (P = 0.0017), and eosinophil proportions 5.79% and 18.58% (P = 0.0004), respectively. In Trial II differences of LW between control and infested birds reached a significant level at the 5th week (P = 0.0038). DFI of control birds was higher than in infested birds (P < 0.0001). Infested birds showed 4.22 times more scratching behaviour than the control (P = 0.0003). Hg, erythrocyte and haematocrit were 5.52 g.dl(-1), 1.79.10(6).mu l(-1) and 29.36% in infested birds, respectively; 11.28 g.dl(-1), 3.78.10(6).mu l(-1) and 43.47% in the control (P = 0.0001). Ratio of the spleen to carcass weight was 0.08% in control and 0.10% in infested birds (P = 0.0595). The ratio of gizzard to carcass weight was higher in infested birds (P = 0.0008). A higher mortality in infested birds was observed in Trial II compared to Trial I (P < 0.0001). The carcasses of infested birds showed lower dry matter content than carcasses of control birds (P = 0.0006). In conclusion, a low level of infestation did not lead to major negative effects, but decreased haemoglobin levels and increased scratching behaviour of the infested birds, indicating a negative impact on welfare. However, high infestations of PRM had severe effects on the quail.
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    The Effect of Restricted Nutrition on Ewe Milking Performance and Lamb Growth Characteristics in Creep Feeding Conditions
    (Islamic Azad Univ, Rasht, 2022) Yildirir, M.; Akbag, H. I.; Yurtman, Y.
    Nutrient deficiency during lactation period negatively affects dams milk production and lamb growth performance. However, the effect of ewe nutrition level on growth rate of Karacabey Merino lambs raised with access to creep feeding is not clear. Therefore to study these effects, a total of 84 single lambed Karacabey Merino ewes (aged 3, 4, 5 years old, 68.05 +/- 0.96 kg of live weight (LW); 2.64 +/- 0.07 of body condition scores (BCS)), and their lambs (n=84) were divided into two feeding treatment groups: group with 32-35% (energy and protein) nutrient restriction (restricted feeding; RF) and control (control feeding; CF) group according to 100% of nutrient requirements. Lambs had free access to concentrate feed in creep feeding conditions until 96 days of weaning. Lactation milk yield was higher in CF group than RF group (P=0.01). Except for milk fat content (P=0.495), milking characteristics as daily milk yield, protein, lactose, and nonfat solids (NFS) contents of milk were found higher (P <= 0.001) in CF group than RF group. Significant interaction was observed between feeding treatment groups (RF and CF) with lamb gender on the daily weight gain (P=0.01) and weaning weight (P=0.036) of the lambs. Male lambs in CF group were heavier than male lambs in RF group (P=0.01) while female lambs in both groups had similar weaning weight (P > 0.05). Growth performance of male lambs was negatively affected by restricted nutrition of their dams, while no significant difference was observed in female lambs. Restricted ewe nutrition negatively affects the potential growth rate of suckling lambs in creep feeding condition.