2018 Cilt 32 Sayı 2

Permanent URI for this collectionhttps://hdl.handle.net/11452/2475

Browse

Now showing 1 - 3 of 3

Effect of egg weight on eggshell thickness, pore density and chick quality in broiler breeder flock
(Bursa Uludağ Üniversitesi, 2018-07-29) Sabah, Saliha; Şahan, Ümran; Bursa Uludağ Üniversitesi/Ziraat Fakültesi/Zootekni Bölümü.; 0000-0003-4577-8054; 0000-0002-4912-0551
The objective of this research was to investigate the effect of egg weight on eggshell thickness, pore density and chick quality in broiler breeder flock. Additionally the correlations between the studied characteristics were calculated. Hatching eggs were collected from 40 wk old Ross 308 broiler breeder flock. The eggs were selected, weighed and numbered individually in light (54.71-58.88 g) and medium (58.24-60.62g) weighed egg groups. Eggs were incubated at 37.5°C and 55% RH in an incubator for 18 days. On 18th day eggs were individually weighed to calculate the egg mass loss. Then eggs were incubated at 37.0°C and 60% RH in a hatcher until hatch. At hatch chicks were weighed individually and chick length was measured. Additionally egg shell thickness and pore density was determined. Egg weight loss was found non-significant in both light and medium weighed egg groups (P>0.05). Egg weight had significant effect on eggshell thickness (P<0.05). Eggshell thickness was found higher in light weighed eggs than in medium weighed eggs (P <0.05) whereas, pore density was determined higher in medium weighed eggs (P<0.01). At hatch chick weight increased with the increased egg weight (P <0.05) while as chick length was not affected by egg weight. A significant correlations was observed between initial egg weight and average eggshell thickness (r= 0.551), chick weight (r=0.615), and also between average eggshell thickness and chick weight (r=0.484) in medium weighed eggs (P<0.05).
Research on the effects of NPK (Chemical fertilizer) and organic fertilizers used for some cotton species (Gossypium hirsutum L.) grown in semi-arid climate conditions on growing crops, growing crop elements and sustainable agriculture
(Bursa Uludağ Üniversitesi, 2017-12-27) Cevheri, Cevher İlhan; Yılmaz, Ahmet
Organic agriculture is a controlled and conditional system that protects the humankind, the environment and the whole ecosystem by preventing sentetic pesticides that cause serious illnesses and contaminate the soil, the air, the water and our food. In order to popularize organic agriculture this study was carried out by using ST-468 and BA-119 cotton varieties at NPK (Chemical fertilizer), Cattle manure, Pigeon manure, and control parcels at Akçakale Vocational High School of Harran University of Organic Agriculture conditions in 2013 and 2014. It is found that according to used organic and chemical fertilizers, plant height varies between 105,46 cm (control) and 116,48 cm (pigeon manure); boll number per plant-1 varies between 19,10 (control) and 31,03 (NPK); average boll weight varies between 5,43 g (control) and 6,18 g (Cattle manure); average seed cotton boll weight varies between 4.33 g (control) and 4,82 g (Cattle manure); seed cotton yield varies between 3240,26 kg ha-1 (control) and 4420,45 kg ha-1 (NPK fertilizer); monopodial branch number varies between 3,51 (pigeon manure) per plant-1 and 4,16 per plant-1 (Cattle manure); number plant-1 boll number per plant-1 varies between 12.13 (control) and 15.12 (NPK); First sympodial branch node number varies between 6,96 (Cattle manure) and 9.60 (Pigeon manure) number plant-1 ginning ratio varies between 40,88% (control) and 42,99 % (pigeon manure); 100 seed weight varies between 9,93 g (control)and 10,41 g (NPK). It is confirmed that the use of organic and NPK (chemical fertilizers) has dramatic effects and statistical differences on plant height, boll number, boll weight and yield.
Sensitivity analysis in landscape ecological planning; the sample of Bayburt
(Uludağ Üniversitesi, 2018-05-24) Özhancı, Esra; Yılmaz, Hasan
The components constituting the identity of a landscape are the natural and cultural components. These dynamic and productive systems that constitute landscapes are in constant interaction. Landscape sensitivity is the study of the delineation and protection of sustainable land use. It is the term that represents the dynamic relationships and interactions between the landscape itself and the adjacent artificial elements. According to official statistics, Bayburt province has not been developed much in terms of socio-economic situation and has also decreased in terms of its demographic structure. With this and the accompanying reasons, guidelines were needed for effective landscaping planning and management. The province represents an important reserve for the determination of ecological sensitivity areas because it has a relatively undisturbed rural landscape structure. In this study, the ecological sensitivity zones of the province of Bayburt were defined in order to preserve the natural and cultural assets that the province possesses and to harness them in a rational way. It was aimed to establish an ecologically efficient management model for the region and similar landscapes by demonstrating the effects of human and natural factors on the landscapes. Composite Ecological Sensitivity Map were created by performing an Ecological Sensitivity Analysis. In the light of this analysis, the major part of the province of Bayburt was to have moderately-sensity ecology. In the planning decisions to be made on macro and micro scale, the highly-sensitive areas should be taken as the focus, and the northeastern parts of the province must be preserved in accordance with their susceptibility. In the high-sensitivity areas, on the other hand, the eco-tourism activities should be performed in a limited and controlled manner providing that they become the buffer zones. In the moderately-sensitive parts that constitute the greater part of the area, however, the social, cultural and vital activities which do not cause pressure on the natural landscape are the fields to be sustained in line with the requirements of the modern age.

Browse

Browsing by Language "en"