Tag Archives: broiler chickens

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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509-514 I. Vitina, V. Krastina, M. Daugavietis, J. Miculis and S. Cerina
Applying Spruce Needle Extractives in Broiler Chicken Feeding
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Applying Spruce Needle Extractives in Broiler Chicken Feeding

I. Vitina¹, V. Krastina¹, M. Daugavietis², J. Miculis¹ and S. Cerina¹

¹Research Institute of Biotechnology and Veterinary Medicine “Sigra” of Latvia University of Agriculture, Institūta 1, Sigulda, Latvia, LV-2150; e-mail: sigra@lis.lv
²Latvian State Forest Research Institute “Silava”, Rigas 111, Salaspils, Latvia, LV 2169; e-mail: inst@silava.lv

Abstract:

Spruce needle extractive substances were produced from a forestry by-product –green biomass of spruce needles. Spruce needle extracts contain a significant amount of natural biologically active substances. During our investigations the evaluation of biologically active substances from spruce needle total extract and of neutral extracts was carried out to assess their effects on innovative composition broiler chicken meat. The feeding trial was conducted with cross Ross 308 broiler chickens by adding the spruce needle total extract and, separately, neutral extract substances to the composition of broiler chickens’ diet. Using spruce needle extractive substances increased live weight on average by 4.31–7.58% (P &lt; 0.05) and decreased feed conversion by 6.28–7.33% in comparison with the control group. The use of neutral extract substances in the poultry diet improved the composition of fatty acids, increased the amount of total carotenoids by 0.45–0.57 mg kg−1 and decreased the cholesterol level by 11.16–23.66 mg 100g−1 in meat.

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