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Articles by T. Althnaian
Total Records ( 3 ) for T. Althnaian
  T. Althnaian , K.M. Alkhodair , I.F. Albokhadaim , A. Homaida and A.M. Ali
  The objective of this study was to study in detail about the endocrine cells of the camel duodenum. The duodenum is not only an important part of the gastrointestinal tract, but also works as endocrine portion by secreting some hormones that play key roles in the regulation of certain organs. Specimens from eleven dromedarian camels (Camelus dromedarius) of both sexes with age ranging from 2-12 years were examined. The immunohistochemistry was performed using five types of hormones. Gastrin showed high immunoreactivity at the endocrine of tunica mucosa and duodenal glands. Somatostatin showed very high immunoreactivity at endocrine of tunica mucosa and duodenal gland. The performance of insulin, which was done for the first time on the duodenum of camel, showed low immunoreactivity at endocrine cells of tunica mucosa and duodenal glands. Serotonin showed high immunoreactivity at the enteroendocrine cells of the tunica mucosa and few cells that produced serotonin at duodenal glands. Glucagon showed moderate to low immunoreactivity at the endocrine of tunica mucosa and duodenal glands. In conclusion, the study results found that the duodenum of the camel has distinctive characters immunohistochemically. Therefore, further physiological and experimental studies are required.
  T. Althnaian , K.M. Alkhodair , I.F. Albokhadaim , R.O. Ramdan and A.M. Ali
  The main objective of this research was to study the morphological characters of the camel duodenum. The general features of the camel duodenum were studied macroscopically. The camel duodenum was grayish to white in color. It was divided into two parts i.e., ampulla and thin part which form the long part. The thin part was divided into three parts i.e., descending part, caudal duodenal flexure (transverse part) and ascending part. The duodenum began at the pylorus and ended at the beginning of jejunum. Its mucosa was pink to grayish in color with crossed circular and longitudinal fold at the ampulla and longitudinal fold at the thin part. The length of the duodenum ranged between 1.2-3.1 m. In conclusion, the camel duodenum has distinctive morphological characters. The study provided an excellent potential for further physiological studies on camel duodenum under an arid environment.
  I.F. Albokhadaim , I.B. Ismail , S.M. El-Bahr and T. Althnaian
  Embryonated egg is an ideal, environment in which to investigate the effects of incubation temperature on the development of the chick embryo. The objective of the current study were to investigate the effect of increasing the incubation temperature of chick embryo by 1.2°C for 7 days (ED4 to ED11) on the body movement and mass of native saudi chick embryo. This objective was extended to examine the influence of pre-hatching temperature on post-hatching growth. Therefore, a total of 180 hatching egg of native Saudi chicken divided into two equal groups incubated at temperature 37.5°C. The incubation temperature was raised to 38.7°C from ED4 to ED11 in treated group before being returned to the control group incubation temperature (37.5°C). The study revealed that elevating the incubation temperature of the eggs of native Saudi chicken by just 1.2°C, from 37.5 to 38.7°C, during embryonic days (ED) 4-11 causes significant increase in embryonic movement as demonstrated in day 8 in the chicks incubated at 38.7°C together with an increase in embryonic development, the embryos incubated at higher temperature were heavier in weights and exhibit significantly longer legs than the controls in ED12 and 15. The increase in pre-hatching incubation temperature (38.7°C) did not reveal any significant effects on post-hatching growth or of feed conversion efficiency.
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