Comparison of growth curves by growth models in slow-growing chicken genotypes raised the organic system Eleroglu, H. (Cumhuriyet Univ., Sivas (Turkey). Sarkisla Asik Veysel Vocational High School); Yildirim, A. (Gaziosmanpasa Univ., Tokat (Turkey). Dept. of Animal Science); Sekeroglu, A. (Nigde Univ., Nigde (Turkey). Dept. of Animal Production and Technologies) ...
International journal of agriculture and biology,
2016, Letnik:
16, Številka:
3
Journal Article
Recenzirano
Two hundred and forty slow-growing chickens consisting of equal numbers of Hubbard S757 (5757) 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) and adjusted coefficient of determination (adj.R2) were detected above 0.996 in boot models for two genotype broilers. The highest value of R2 and adj.R2 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 R2 were all above 0.998; for the two models; however Logistic model was the best (0.999%).
The effect of dry caper (Capparis spinosa) fruit on egg production and quality characteristics of laying hens Yildirim, A. (University of Gaziosmanpasa, Tokat (Turkey). Dept. of Animal Science); Sekeroglu, A. (University of Nigde (Turkey). Dept. of Animal Production and Technologies); Koc, H. (University of Gaziosmanpasa, Tokat (Turkey). Dept. of Field Crops) ...
Pakistan journal of agricultural sciences,
2016, Letnik:
51, Številka:
1
Journal Article
Recenzirano
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 (ST) and morning hen-day egg yield were influenced by dietary supplementation of DCF (P less than 0.05). Hen-ay 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 greater than 0.05) during the entire experiment. The lightness (L*) and redness (a*) values for egg shell color were similar (P greater than 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 less than 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 plus minus 0.680 mmol trolox/kg, 60.03 plus minus 3.710 mmol TEAC/kg and 3.16 plus minus 0.060g garlic 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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