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Articles by K. Al-Kharousi
Total Records ( 3 ) for K. Al-Kharousi
  W. Al-Marzooqi , I.M. Al-Moqbali , O. Mahgoub , K. Al-Kharousi , M. Al-Abri , S. Zekri , O. Alqaisi and N.M. Al-Saqri
  Objective: The aim of this study was to evaluate the effect of thermally processed Prosopis juliflora pods (PJP) on the growth performance of broiler chickens. Methodology: Two experiments were conducted. In experiment 1, the nutritive value of raw or thermally processed PJP was evaluated through an ileal digestibility assay. Apparent metabolizable energy (AME) and ileal digestibility of crude fibre in the formulated diet (corn, raw and thermally processed PJP) were determined. The second experiment (a growth study) was designed to test the effect of thermal processing on the nutritive value of PJP (p<0.001). Seven dietary treatments were evaluated in experiment 2, namely, the basal diet, three levels of inclusion of raw PJP-based diets (5, 10 and 15%) and three levels of inclusion of processed PJP-based diets (5, 10 and 15%). Results: The results of experiment 1 showed that the AME of processed PJP was higher (24%) than that of raw PJP. The raw PJP had significantly lower AME content (10.16 vs 13.41 and 15.26 MJ kg–1) and lower apparent ileal digestibility coefficients of crude fibre (0.27 vs 0.46-0.65) compared to processed PJP and corn, respectively (p<0.001). The results of experiment 2, indicated that substitution of corn by 10% processed PJP significantly improved the crude fibre digestibility and AME (p<0.001) compared to the other dietary treatments. The weight gain of birds fed 10% processed PJP (55.13 g/bird/day) was similar to those of birds fed a basal diet (55.68 g/bird/day). Conclusion: Processed PJP can replace corn up to the level of 10% in broilers diets without affecting growth performance.
  W. Al-Marzooqi , Z.A.S. Al-Maskari , E.H. Johnson , K. Al-Kharousi , O. Mahgoub , N.M. Al-Saqri and Y. El Tahir
  Objective: The aim of this study was to assess the growth performance, meat quality characteristics and intestinal development of indigenous and commercial chicken strains raised under an intensive management system. Materials and Methods: One hundred eighty birds of local Omani and Cobb500 broiler chickens were divided into two groups of15 replicates with each replicate containing 6 birds. The birds were fed a non-medicated conventional corn-soybean meal diet. Feed intake, body weight gain and feed conversion ratio were recorded weekly. At the end of the growth experimental period (35 days), 15 birds per breed were randomly selected for morphological analysis of the jejunum and ileum, carcass and organ weight. Blood was collected for hematological and serum biochemistry analysis. Results: Hematological and serum analysis showed that there was no significant difference between the Omani and Cobb 500 broiler chickens, suggesting that the birds were healthy. The Cobb 500 showed a significantly higher feed intake (63.8%) and body weight gain (72.1%) and a better feed conversion ratio than that of the Omani breed (1.5 vs 1.96). Morphological analysis showed that Cobb 500 broilers had a greater villi height compared to the Omani breed (p<0.01). Conclusion: Villus development has a profound effect on the growth performance of chickens.
  W. Al-Marzooqi , K. Al-Kharousi , Y. El Tahir and E.H. Johnson

Background and Objective: The microflora in the gastrointestinal tract influences the digestion, health and wellbeing of chickens. This study was conducted to assess the relative abundance of bacterial microflora in different segments of the gastrointestinal tract (duodenum, jejunum, ilium and cecum) of indigenous local Omani chickens. Materials and Methods: One hundred fifty one-day-old chicks of indigenous (local Omani) chickens were raised under an intensive management system and fed a nonmedicated corn-soybean meal diet from 0-35 days of age. Results: Using 16S rDNA-based analysis, the study showed that each intestinal segment developed its own bacterial community and the diversity of the bacterial community changed from one age period to the next. In addition, the 16S rDNA sequences of Lactobacillales were dominant in the duodenum, jejunum and ileum libraries, whereas the 16S rDNA sequences of Clostridiales were dominant in the cecum libraries. The relative abundance of the bacterial microbiota differed significantly (p<0.05) across different intestinal segments. Conclusion: Each region developed its own bacterial community and the relative abundances of the bacterial community were quite different.

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