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Articles by Ergun Demir
Total Records ( 2 ) for Ergun Demir
  Huseyin Eseceli , Ergun Demir , Nurcan Degirmencioglu and Murat Bilgic
  This study has been conducted to evaluate the use of Bio-Mos®, mannan oligosaccharide derived from the cell wall of yeast, as a potential replacement of growth promoting antibiotics in the diet of broilers. Effects of an antibiotic growth promoter (Avilamycin) and mannan oligosaccharide (Bio-Mos®) on performance have been examined in 320 days-old Ross 308 broiler chicks. These chicks were randomly grouped into two treatments with eight replicates of 20 chicks each. Commercial corn-soybean based broiler starter, grower and finisher diets were formulated as basal diets. Basal diets were supplemented with an antibiotic growth promoter (0.1% Avilamycin) and a mannan oligosaccharide (starter 0.15%, grower 0.1%, finisher 0.05% Bio-Mos®). Live weight, weight gain and feed intake, feed conversion ratio were not affected significantly by dietary treatments throughout the experiment (p>0.05). Mortality rate, hot carcass yield and feed cost for kg live weight gain did not show any significant differences among the groups (p>0.05). Mannan oligosaccharide (Bio-Mos®) has the potential to be an alternative to antibiotic growth promoters in broiler diets.
  Ahmet Sekeroglu , Musa Sarica , Ergun Demir , Zafer Ulutas , Muammer Tilki , Mustafa Saatci and Hussain Omed
  This research was carried out to investigate the effects of husbandry systems (deep litter, free range and cage systems) on brown layer strain of ATAK (GxSx) in terms of egg production and egg quality. In the experiment, deep litter and free range systems were replicated four times with 20 birds per replication and the cage system was replicated six times with 16 birds per replicate. Water and feed were supplied ad libitum to the birds in the experiment. In deep litter, free range and cage systems, respectively: 50% production age was 168.75, 160.00 and 158.33 days (p>0.05); feed intake (g/bird/day) was 157.21, 146.70 and 134.33 (p<0.01); bird weights at 5% egg yield were 1732.07, 1697.27 and 1775.05 g (p<0.01); hen housed egg production was 96.44, 118.08 and 111.00 eggs (p>0.05); egg shape index was 76.46, 76.05 and 77.27% (p<0.01); egg shell colour (L-a-b) was 25.28, 23.80 and 22.56 (p<0.05); egg albumen pH values were 8.79, 8.72 and 8.72 (p<0.01); cracked egg ratio was 2.66, 2.02 and 3.13% (p>0.05). The free-range system had some advantages when compared to deep litter and cage systems in terms of 5% yield age weight, hen housed egg yield, egg shape index and cracked egg ratio. However, as a result of the study, it has been determined that there were no great differences among deep litter, free-range and cage systems. More detailed studies are necessary to show the differences and advantages of the main poultry housing systems.
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