Yahya Sabah Abdulameer

IntroductionThe effects of thermal stress (TS) on chickens have been widely explored due to their relation to economic losses and animal performance retardation. Modern broiler chickens strains have greater sensitive to high temperature than old strain (1). A high temperature is one of the major stressors linked to economic losses to the poultry industry (2). It causes bad growth performance (3), ...

INTRODUCTIONNow a day, there are limitations on the use of antibiotic because of its resistance development after prolonged consumption. So there is constant search and development for the new other alternatives such as prebiotics, probiotics and phytobiotics1-4. The principal site for digestion, nutrient assimilation and energy harvest is small intestine. These absorbed nutrients are directly con ...

IntroductionThe first days of life are very critical for gastrointestinal (GI) maturation and immunity development, especially for high yield breeds. However, in commercial hatchery practice the birds within this period exposures for many stressors, such as newly hatched chicks remain for up to 36 hours after hatching before they are pulled from hatching cabinet and then it followed by hatchery pr ...

1. IntroductionThe newly hatched chicks may be more acceptances to pathogens and oxidative factors because their immune system is still immature in early period of life. Delay in collection chicks from hatchery trays can culminate immunity and oxidative stress of the newly hatched chicks. Furthermore, it is believed that high yield breed, although advantage to industry, have put more problems on t ...

INTRODUCTIONThe improvement of the immune system and intestinal safety is associated with high production in a new strain of broilers (1), there for all methods that enhance these systems were studied deeply and we need to discover other strategies to create a balance between bird health and production. Although there are potential discussions about the use of some methods such as antibacterial su ...

1. IntroductionHistorically, biological active substances in herbal plants are considered the main sources for preventing and treating infectious diseases. They are also applied as protective drugs in human. Many investigators have explained that some herbal plants have biological active materials are able to increase animal production and act as antibacterial drugs [1,2]. The attention on herbal ...