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Articles by Riyadh S. Aljumaah
Total Records ( 3 ) for Riyadh S. Aljumaah
  Mutassim M. Abdelrahman , Riyadh S. Aljumaah and Moez Ayadi
  A study was conducted to evaluate the blood serum, liver, kidney and meat tissues Zn, Cu, Mn and Mg concentrations by collecting samples from two dominant camel (Camels dromedaries) breeds, Majaheem (n = 15 males) and Maghateer (n = 15 males); 1.5±0.5 years old raised under traditional semi intensive system in Saudi Arabia. Blood and tissues samples were prepared and analyzed for the Zn, Cu, Mn and Mg concentrations by Inductively Coupled Plasma Optical Emission Spectrometer (ICP-OES). Results showed that a significantly (p<0.05) higher Cu and Zn and lower Mn and Mg concentrations in blood serum of the Majaheem compared with the Maghateer breed. Copper and Mg concentration in Majaheem liver were significantly (p<0.01) higher, but lower Zn when compared with the Maghateer breed. For kidney samples, a significantly higher concentrations of Cu (p<0.0001) and lower Mn (p<0.05) and Zn (p<0.05) were found for Majaheem than for Maghateer. Furthermore, a significantly (p<0.05) higher Mg concentration and lower Cu (p<0.05) in meat samples from Majaheem breed when compared with the Maghateer. The inorganic matter percentages of liver, meat and kidney were significantly higher (p<0.05) for the Majaheem breed than for Maghateer (1.91, 1.2 and 1.371 vs. 1.46, 0.76 and 1.07%, respectively). Furthermore, Zn concentration in serum of Majaheem and Maghateer were positively correlated to Zn concentration in meat (R2 = 0.552 and 0.603, respectively; p<0.05). In conclusion, results indicate a breed differences may exist in Cu, Zn, Mn and Mg metabolism as a heritable characteristic. So, further studies are recommended.
  Riyadh S. Aljumaah and Mansour F. Hussein
  Normal reference ranges for hematology, blood chemistry, platelet indices and coagulation parameters were determined in male and female Erlanger’s gazelles (Gazella erlangeri). Data investigated included complete blood count, Platelet count (PLT), plateletcrit, mean platelet volume, platelet distribution width and a wide range of biochemical and chemical parameters including serum proteins, enzymes and other clinically important metabolites and inorganic constituents. Normal ranges of coagulation parameters were also investigated, namely; Prothrombin Time (PT), Activated Partial Thromboplastin Time (APTT), fibrinogen, procovertin, antihemophilic factor A coagulation activity, plasma thromboplastin component, Stuart factor and plasma thromboplastin antecedent concentration. Statistical analysis showed significantly higher (p<0.05) total leucocyte and lymphocyte counts in female as compared to male gazelles. All other haematological parameters were similar in males and females. No significant intersex differences were found in mean platelet counts, platelet indices and coagulation parameters. As in other desert gazelles, decreased PT and APTT and increased PLT, fibrinogen and antihemophilic factor coagulation activity were recorded in Erlanger’s gazelle as compared to humans. Serum chemical analysis revealed significantly higher (p<0.05) concentrations of glucose, urea, BUN and total bilirubin and significantly lower total protein and CL concentration (p<0.05) in female versus male gazelles. Other chemical parameters were similar in the two sexes. All the data recorded in this study are reported for the 1st time in Erlanger’s gazelles.
  Mohamed A. Abouheif , Mohamed Y. Al-Saiady , Saud I. Al-Mufarrej , Aziz Makkawi , Hafiz A. Ibrahim and Riyadh S. Aljumaah
  Twenty four Najdi ram lambs, weighing an average of 42.0+0.6 kg were utilized in this experiment to evaluate the effects of various alfalfa hay particle lengths in the diets and frequency of feeding on nutrients digestibility, ruminal retention time, total mean retention time and transit time. Lambs were randomly placed in a 3x2 factorial arrangement of three dietary treatments: 9.5 and 14 mm diets where alfalfa hay was processed to 9.5 and 14 mm particle lengths, respectively mixed with 3 parts of concentrate and pelleted as total mixed ration and long hay diet where one part of loose alfalfa hay (17.8±2.4 cm) was offered in combination with 3 parts of only-concentrate pellet and two feeding frequencies: once daily feeding at 0800 h and twice daily feeding in two equal portions at 0800 and 1500 h. All dietary treatments were homogeneous in their ingredient composition. Altering the particle length of alfalfa hay in diets did not affect the digestibility of DM or CP whereas digestibilities of ADF and NDF and ruminal retention time were 4.2 and 5.3% units higher (p<0.05) and 6.3 h longer (p<0.05), respectively for the long hay diet versus the 9.5 mm pelleted diet. The total mean retention time for the long hay diet was longer (p<0.05) at 63.1 h compared with the 9.5 and 14 mm diets. Lambs fed once a day had higher (p<0.05) NDF digestibility and 4.9 and 3.8 h longer (p<0.05) ruminal and total mean retention times, respectively than lambs fed twice daily. On the other hand, neither particle length of the alfalfa hay nor frequency of feeding had affected (p>0.05) the lower tract retention time and transit time.
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