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    Comparison of Growth Curves of Broiler under Different Stocking Densities by Gompertz Model
    (KAFKAS UNIV, VETERINER FAKULTESI DERGISI, 2013) Sekeroglu, Ahmet; Tahtali, Yalcin; Sarica, Musa; Gulay, M. Sukru; Abaci, Samet Hasan; Duman, Mustafa
    The knowledge of the growth curve in poultry science is very useful for describing growth kinetics and setting commercial management procedures. The objective of this research was to fit the Gompertz growth curve from hatching weights to 42 d-old weights of broilers in 3 stocking density groups. A total of 284 Ross 308 broilers randomly divided into 3 stocking density groups (9, 13 and 17 birds/m(2)) in this experiment. All birds were weighted weekly. The asymptotic weight (A) of broiler chickens for 9, 13 and 17 bird/m(2) stocking density groups were 4198.46, 3807.45 and 3999.92 g, respectively (P<0.05). The growth rates (K) of broiler chickens for 9, 13 and 17 bird/m(2) stocking density groups were 0.055, 0.058 and 0.052, respectively (P<0.01). The coefficient of determination for all stocking density groups were 0.998, 0.997 and 0.996, respectively (P<0.05). Moreover, the mean square error (MSE) value was lowest for 9 bird/m(2) group (P<0.05). The current study suggested that stocking density of 9 bird/m(2) was better for the broiler growth of the different stocking densities on the base of mature live weight (A), coefficient of determination (R-2) and mean square error (MSE).
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    Egg production and quality characteristics of laying hens fed diets supplemented with dry caper (Capparis spinosa) leaf powder
    (Agricultural Research Communication Centre, 2018) Yildirim, Arda; Sekeroglu, Ahmet; Koc, Huseyin; Eleroglu, Hasan; Duman, Mustafa; Tahtali, Yalcin; Elmastas, Mahfuz
    An in vivo experiment was conducted to determine the effect of dietary inclusion of dry Caper (Capparis spinosa) leaf powder (DCL) on egg production and egg quality of laying hens at the beginning of the laying period. Four groups of commercial hens (ATAK-S) were fed with diets containing 0, 5, 10 and 15 g DCL/kg. The results demonstrated that dietary DCL had no effect on feed intake, feed efficiency, egg mass (EM) and egg production parameters (P>0.05). Hen-day egg production (HDP) value of the groups was 69.52%, 64.97%, 68.02% and 71.72% respectively. Trolox equivalent antioxidant capacity (TEAC), ferric reducing antioxidant power (FRAP) and total phenolics amount of DCL were 51.06 +/- 2.300 mmol trolox/kg, 50.10 +/- 3.488 mmol TEAC/kg and 2.78 +/- 0.050 g gallic acid equivalents (GAE)/kg respectively. Based on the results from the current study, the dietary DCL with levels up to 15 g/kg neither reduced productivity performance traits nor improved egg quality characteristics.C
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    THE EFFECT OF DRY CAPER (Capparis spinosa) FRUIT ON EGG PRODUCTION AND QUALITY CHARACTERISTICS OF LAYING HENS
    (UNIV AGRICULTURE, FAC VETERINARY SCIENCE, 2014) Yildirim, Arda; Sekeroglu, Ahmet; Koc, Huseyin; Eleroglu, Hasan; Tahtali, Yalcin; Sen, Merve Isil; Genc, Nusret
    This study was conducted to determine the effect of increasing dietary inclusion of dry Caper (Capparis spinosa) fruit (DCF) on egg production and quality characteristics of laying hens between 20 and 32 weeks of age. Four groups of commercial hens (ATAK-S) were fed with diets containing 0, 5, 10 and 15 g DCF/kg. The results showed that final body weight, feed intake, shape index (SI) and morning hen-day egg yield were influenced by dietary supplementation of DCF (P<0.05). Henday egg production (HDP) value of commercial hens groups was 73.47%, 56.67%, 54.18% and 51.72% respectively. The effect of increased the levels of DCF on egg weight, specific gravity, shell breaking strength, shell thickness, surface area, albumen pH, albumen index (AI), yolk index (YI), shell weight and haugh unit (HU) was not statistically significant (P>0.05) during the entire experiment. The lightness (L*) and redness (a*) values for egg shell color were similar (P>0.05) in the DCL supplemented groups as compared to the control group. The yellowness (b*), Hue angle (H), chroma (C*) and Delta E* values were lower (P<0.05) in 15 g DFC/kg group when compared with the control. Trolox equivalent antioxidant capacity (TEAC), ferric reducing antioxidant power (FRAP) and total phenolics amount of DCF were 43.75 +/- 0.680 mmol trolox/kg, 60.03 +/- 3.710 mmol TEAC/kg and 3.16 +/- 0.060 g gallic acid equivalents (GAE)/kg, respectively. Based on the results from the current study, the dietary supplementation with dry DCF had adverse effects on productivity performance traits and egg quality.
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    The effect of dry caper (capparis spinosa) fruit on egg production and quality characteristics of laying hens
    (University of Agriculture, 2014) Yildirim, Arda; Sekeroglu, Ahmet; Koc, Huseyin; Eleroglu, Hasan; Tahtali, Yalcin; Sen, Merve Isil; Duman, Mustafa
    This study was conducted to determine the effect of increasing dietary inclusion of dry Caper (Capparis spinosa) fruit (DCF) on egg production and quality characteristics of laying hens between 20 and 32 weeks of age. Four groups of commercial hens (ATAK-S) were fed with diets containing 0, 5, 10 and 15 g DCF/kg. The results showed that final body weight, feed intake, shape index (SI) and morning hen-day egg yield were influenced by dietary supplementation of DCF (P<0.05). Hen-day egg production (HDP) value of commercial hens groups was 73.47%, 56.67%, 54.18% and 51.72% respectively. The effect of increased the levels of DCF on egg weight, specific gravity, shell breaking strength, shell thickness, surface area, albumen pH, albumen index (AI), yolk index (YI), shell weight and haugh unit (HU) was not statistically significant (P>0.05) during the entire experiment. The lightness (L*) and redness (a*) values for egg shell color were similar (P>0.05) in the DCL supplemented groups as compared to the control group. The yellowness (b*), Hue angle (H), chroma (C*) and ?E* values were lower (P<0.05) in 15 g DFC/kg group when compared with the control. Trolox equivalent antioxidant capacity (TEAC), ferric reducing antioxidant power (FRAP) and total phenolics amount of DCF were 43.75±0.680 mmol trolox/kg, 60.03±3.710 mmol TEAC/kg and 3.16±0.060 g gallic acid equivalents (GAE)/kg, respectively. Based on the results from the current study, the dietary supplementation with dry DCF had adverse effects on productivity performance traits and egg quality.