Tag Archives: Sex

483-491 A.J. Kryeziu, N. Mestani, Sh. Berisha and M.A. Kamberi
The European performance indicators of broiler chickens as influenced by stocking density and sex
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The European performance indicators of broiler chickens as influenced by stocking density and sex

A.J. Kryeziu, N. Mestani, Sh. Berisha and M.A. Kamberi*

Department of Biotechnology in Zootechny, Faculty of Agriculture and Veterinary, The University of Prishtina, “Bill Clinton” Boulevard, nn, XK10000, Prishtinë, Republic of Kosovo.
*Corresponding author: E-mail: muhamet.kamberi@uni-pr.edu

Abstract:

The aim of this study was to investigate the influence of different stocking densities on the growth performance of Ross 308 broiler chickens up to six weeks of age. A total of 216 one-day broiler chicks were randomly assigned to three treatment groups based on the stocking density: Low (LSD) = 14 chickens m-2, Medium (MSD) = 18 chickens per m2 and High (HSD) = 22 chickens m-2, with four replications. Higher body weight gain (TWG) was observed for the low (2,043.89 g) and medium (2,008.03 g) compared to the high (1,901.51 g) density. The study revealed that chickens of the LSD treatment consumed significantly (P < 0.01) more feed compared to the HSD chickens. High stocking density (22 m-2) tended to improve feed conversion ratio compared to medium (18 m-2) and low (14 m-2) stocking density, but the differences were not significant (P > 0.05). From the results of this study it can be concluded that broiler chicks can be stocked up to 22 chickens m2, as far as required standards are assured.

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417–425 M. Hruška
Evaluation of the actual sitting position of drivers of passenger vehicles
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Evaluation of the actual sitting position of drivers of passenger vehicles

M. Hruška

Czech University of Life Sciences, Faculty of Engineering, Department of Technological Equipment of Building, Kamýcká 129, CZ165 21 Prague 6, Czech Republic
*Correspondence: jabko@tf.czu.cz

Abstract:

This paper is concerned with comparing the actual sitting position of drivers of passenger vehicles with the position commonly considered optimal from the viewpoint of active and passive safety, and the long-term effects on the driver’s health. The research described herein was conducted on a sample of randomly selected drivers in Czech Republic. All the measurements were conducted in a single, neutral, medium-sized passenger vehicle with which none of the test subjects had any previous experience. For this reason, none of the tested drivers had the advantage of familiarity with the environment. This research came about as an attempt to re-create the common situation wherein a driver adjusts his/her position behind the steering wheel solely on the basis, of intuition. Through a statistical evaluation of the acquired data, it was possible to confirm the initial hypothesis that a substantial portion of tested drivers assume a less than optimal driving position. This fact has a negative effect not only on reducing active and passive safety, but directly impacts upon the health of drivers who cover high annual mileage. The results of this paper can be used when designing cabins and modern interactive systems for passenger vehicles, which will be able to assist the driver in setting the optimal driving position. In this way, it will be possible to directly impact upon traffic safety and positively influence drivers’ health.

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