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    Comparison of Growth Curves by Growth Models in Slow-Growing Chicken Genotypes Raised the Organic System
    (FRIENDS SCIENCE PUBL, 2014) Eleroglu, Hasan; Yildirim, Arda; Sekeroglu, Ahmet; Coksoyler, Fikret Nafi; Duman, Mustafa
    Two hundred and forty slow-growing chickens consisting of equal numbers of Hubbard S757 (S757) and Hubbard Grey Barred JA (GB-JA) strains were utilized for the investigation in organics system and were used to estimate growth curve in Gompertz and Logistic model. The asymptotic weights for GB-JA and S757 genotype female; male in the Gompertz model were estimated 3725.34 g; 6109.60 g and 4876.10 g; 6496.47 g and same parameter were found in Logistic model 2133.33 g; 2906.35 g and 2790.37 g; 3635.00 g respectively. The Gompertz model was higher estimate than Logistic model for the asymptotic weights parameter. The instantaneous growth rate for GB-JA and S757 genotype female; male in the Gompertz model were estimated 0.1424; 0.1288 and 0.1525; 0.1495 and same parameter values were found in Logistic model 0.3753; 0.3734 and 0.3873; 0.3949 respectively. Significant difference was observed for the instantaneous growth rate parameter between GB-JA and S757 genotypes in each of models. According to the results of goodness of fit in Gompertz and Logistic growth curve models, the coefficient of determination (R-2) and adjusted coefficient of determination (adj. R-2) were detected above 0.996 in boot models for two genotype broilers. The highest value of R-2 and adj. R-2 were obtained from the Logistic model in GB-JA. The two models were all fitted the growth curves of slow-growing chicken genotypes in organic system very well, and the fitting degrees R-2 were all above 0.998; for the two models; however Logistic model was the best (0.999%). c 2014 Friends Science Publishers
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    Comparison of meat quality and fatty acid profile in slow-growing chicken genotypes fed diets supplemented with Origanum vulgare or Melissa officinalis leaves under the organic system
    (TAYLOR & FRANCIS LTD, 2013) Eleroglu, Hasan; Yildirim, Arda; Isikli, Nursel D.; Sekeroglu, Ahmet; Duman, Mustafa
    This study was conducted to compare the meat quality and selected fatty acids profile of two different slow-growing broiler genotypes (Hubbard S757; S757 and Hubbard Grey Barred JA; GB-JA) fed diets supplemented with dry oregano (Origanum vulgare L., OV; 10 g/kg basal diets) or lemon balm leaves (Melissa officinalis L., MO; 10 g/kg basal diets) under organic housing system. It is concluded that slow-growing genotypes had no effect on L* parameter of the breast, thigh and abdominal fat meat quality. Two hundred and forty chicks were allocated randomly into 4 experimental groups according to a 2x2 factorial arrangement. Birds were raised until 98 days in order to achieve an acceptable market live weight. The b* colours of breast and thigh meat were significant different among genotypes and also a* colour of breast meat of GB-JA increased (P<0.05). Slow-growing female broilers produced a higher dry matter content and lower fat content of breast meat as compared with males. There were the higher concentrations of linoleic (C18:2n-6) acid and the lower concentrations of linolenic acid (C18:3n-3) in genotypes fed with supplemented dry oregano or lemon balm leaves diet. Sex affected total unsaturated fatty acids (UFA) composition, polyunsaturated fatty acid (PUFA) and linoleic acid, were higher in slow growing males breast meat as compared with females breast meat. These results suggested that the slow-growing genotypes might had influenced the colour of breast and thigh meat, although overall meat quality was not affected under the organic system.
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    Comparison of the Growth Performance and Carcass Characteristics of Two Slow-Growing Broiler Genotypes Fed Diets Supplemented with Dry Oregano (Origanum vulgare L.) or Lemon Balm (Melissa officinalis L.) Leaves under the Organic System
    (KAFKAS UNIV, VETERINER FAKULTESI DERGISI, 2014) Eleroglu, Hasan; Yildirim, Arda; Sekeroglu, Ahmet; Duman, Mustafa
    This study was conducted to determine the growth performance and carcass characteristics of two slow-growing broiler genotypes (Hubbard S757 and Hubbard Grey Barred JA) fed diets supplemented with dry oregano (Origanum vulgare L. or lemon balm leaves (Melissa officinalis L.) as growth promoter source under an organic housing system. In this study 240 chicks (mixed-sex) were allocated randomly into 4 experimental groups according to a 2 x 2 factorial arrangement for 2 broiler genotypes and 2 diets. The effects of dry herb leaves and genotype x herb leaves interaction on studied parameters were not significant at all weeks of age (P>0.05), except neck (%). Body weight, body weight gain, feed efficiency, carcass weight and yield, leg weight and yield, breast weight and yield, back weight and yield, edible giblets weight and yield of Hubbard S757 genotype were higher (P<0.05) than those of Hubbard Grey Barred JA genotype. The female breast (P<0.01) and edible giblets yield (P<0.05) were superior to those of males. These results show that herb leaves used as a growth promoter source under organic housing system did not affect the studied parameters and that in terms of these parameters, and subsequent Hubbard S757 genotype were superior to Hubbard Grey Barred JA genotype.
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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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    Meat physico-chemical composition of guinea fowl fed organic diets supplemented with dry oregano leaf
    (Sivar-Soc Italiana Veterinari Animali Reddito, 2020) Yildirim, Arda; Eleroglu, Hasan; Duman, Mustafa
    The present study was conducted to determine the meat quality and some fatty acids of standard guinea fowl genotype fed organic diets supplemented with dry oregano (Origanum vulgare L.) leaf. A total of 240-one day-old guinea fowl keets (mixed-sex) were randomly divided into four dietary groups with three replicate pens (20 keets per pen). The birds were fed on the basal diet with supplementation of the control (without supplement, 0 g/kg), 5 g/kg (low), 10 g/kg (medium) and 15 g/kg (high) dry oregano leaf (Origanum vulgare L., OV) during 16 weeks. There were no significant differences for the values of L-star, a(star), b(star), H-star (Hue angle), C-star (Chroma), Delta E-star((L-star 2+a(star 2)+b(star 2))(1/2)) in right breast with skin (Pectoralis major and Pectoralis minor) and without skin between each group. No statistical differences were found between the mean values on physical characteristics (pH, water holding capacity), chemical composition (moisture, protein, fat and ash), saturated and unsaturated fatty acids of right breast meat of guinea fowl with the supplementation of the different levels of dietary oregano leaf. These findings showed that oregano supplementation had no practical adverse impact on the meat quality of guinea fowl reared in the organic system.
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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.
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    The welfare of slow growing broiler genotypes reared in organic system
    (UNITED ARAB EMIRATES UNIV, 2015) Eleroglu, Hasan; Yildirim, Arda; Duman, Mustafa; Sekeroglu, Ahmet
    This study study was conducted to compare welfare indicators and some serum biochemical parameters of two different slow-growing genotypes (Hubbard S757; S757 and Hubbard Grey Barred JA; GB-JA) under organic housing system. A total of 240 day-old chicks were allocated randomly into 2 experimental group with 6 replicates and 20 chicks was reared in each replicate. The tonic immobility was a significant difference between genotypes and sex at 10 and 14 weeks, respectively (P < 0.05). Overall duration of tonic immobility was similar (P > 0.05) in genotypes and sex. The effect of sex was significant for width of tarsometatarsus at the joint with tibiotarsus; males had greater fluctuating and relativite asymmetry than females (P < 0.05). There were positively correlations between fluctuating and relative asimetry values of the third phalanx of the mid toe length and the fourth phalanx of the outer toe length from specific feet trait measurements. Serum cholesterol and uric acid had significant differences between genotypes (P < 0.01). Cholesterol levels was significantly (P < 0.01) higher in male than in female slow-growing broiler. It is concluded that slow-growing genotypes and sex had no effect on measures of welfare, such as the fluctuating asymmetry, relativite asymmetry, tonic immobility and rectal temperatures.