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Effect of Yucca Schidigera and aluminum chloride on the immunological status and lung histological structure of males and females Silver Montazah laying chickens strain
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Abstract: The present work was performed to study the effect of adding Yucca schidigera extract to feed and aluminum chloride to the litter on the immunological status, lung histological structure and some pathogen microorganisms in the intestine of males and females Silver Montazah laying strain. A total number of 320 females, 30 weeks old and 240 males 32 weeks old, were used. Birds of each sex were equally divided into four experimental groups with two equal replicates (40 hens and 30 cocks each) The first group was fed a basal diet and kept on untreated litter as control (CO), the second group was fed a basal diet supplemented with 0.2 g Yucca/kg diet and kept on untreated litter (YU), the third group was fed a basal diet and kept on treated litter with 250 g aluminum chlonde/m2- (AL), the fourth group was fed a basal diet supplemented with 0.2 g Yucca/kg diet and kept on treated litter with 250 g aluminum chloride/m2 (YU- AL). The four experimental groups were carried out in each of males and females chicks. The main results could be summarized as follows: Using Yucca schidigera in the diet or aluminum chloride in the litter or both compounds together significantly (P<0.01 ) decreased each of intestinal pH, the total counts of microbes (T.C), as well as pathogenic microbes such as, E. Coli and staphylocous (ST), while the coliform (CF) numbers were not affected. Using Aluminum chloride in the litter either alone or with Yucca significantly increased RBC'S antibody titer comparing with Yucca alone and control group (CO).
A significant decrease in intestinal pH accompanied with significant decrease in the numbers of the studied microbes was recorded for males as compared with females.
Regarding the interaction between the experimental treatments and sex significantly (P <0.01) increased serum antibody titer and significantly (P<0.01) reduced intestinal pH in both sexes, also these treatments significantly (P < 0.01) reduced the counts of CF, E. coli, ST and the T.C in females, while males were not significantly affected except, the E. coli counts which reduced by Yucca (YU) treatment.
Experimental treatments induced a destinectable improvement in the lung's histological structure for males and females. Where, these additives increased ciliar numbers and their length comparing with CO group. The same trend was obtained for the diameters of pulmonary secondary and parabronchiols as well as the air capillaries. Also, these additives decreased thickness of connective tissues in the lung which increased the efficiency of the respiratory process, this in turn reflected on the physiological and productive performance. However, there were no any differences between males and females in lung histological structure. Thus, it could be concluded that adding Yucca schidigera in the diet and/or aluminum chloride in the litter reduced the pathogenic microorganisms load and improved the lung tissues; however the best results were obtained by using YU-AL treatment.
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| Publication year |
2010
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| Pages |
107-124
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| Availability location |
معهد بحوث الانتاج الحيوانى- شارع نادى الصيد- الدقى - الجيزة
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| Availability number |
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| Organization Name |
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| serial title |
Egyptian Journal of Applied Science
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| ISSN |
1110-1571
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| Author(s) from ARC |
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| Agris Categories |
Animal physiology - Nutrition
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AGROVOC
TERMS |
Immunological factors.
Layer chickens.
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| Proposed Agrovoc |
Yucca Schidigera;aluminum chloride;lungpathogen microorganisms;
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| Publication Type |
Journal
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