EFFECT OF ZINC SULFATE ON SPERMATOGENESIS IN  CHICKEN COCKS   2-STUDY SOME CYTOGENIC CHARACTERS

	EFFECT OF ZINC SULFATE ON SPERMATOGENESIS IN CHICKEN COCKS 2-STUDY SOME CYTOGENIC CHARACTERS
AL-TAQANI
Article 1, Volume 21, Issue 2, 2008, Pages 0-0
Abstract
This study was conducted at AL- kufa technical Iustitute´s poultry farm during the period from 11th March to 19th April 2004, to investigate the influence of different levels of zinc sulfate on some sytogenic character of roosters . A total of( 128) shaver cocks, 18th weeks old and (2) kilogram average weight were used in this study .They left for (12) days as adaptation then eight pens each one s contain ( 16) cocks.There are four pens for injection rout in which the concentration of zinc sulfate were (0,10, ,15,20) mg/kg of B.W. daily. However there were four pens for drinking water route in which the concentrations of zince sulfate were (0,100, 150, 200 )mg/kg of B.W. daily. four exposure period (One week, Tow weeks,Three weeks,Four weeks ) for every treatment were added as a secund factor . Four cocks from each treatment were randomly slaughtered weakly and autopsyd to obtain the testes , testicular weight was determined immediately after werds.All demanded testes are done to study three characteristics which are the most important to spermatogenesis in cocks: 1-Percentage of abnormal spermatozoa . 2-Metotic index . 3-Percentage of chromosomal aberration . The results were showed : Cocks injected by more than (10) mg/kg of B.W. or the exposure of cocks in drinking water to more than (100) mg/kg of B.W.daily were Dramaticaly effected on spermatogenesis in cocks.The results clearly indicated that significant icreases are hapend in percentage of Abnormal Spermatozoa and Chromosomal Aberration . However , the period of exposure effected significantly except metotic index

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