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Relationship between Zinc and Seminal Quality of Ram

LIU Hong-yu et al (College of Animal Sci-Tch,Northwest Sci-Tech University of Agriculture and Forestry,Yangling,Shaanxi 712100)  
10 mature male tail sheep were selected and divided into 5 group at random,fed with the different concentrations of zinc,to study the relationship between days of feed and seminal quality.Treatment A was the control group,where was contained 39.69?mg/kg of zinc in basal diet.In treatment B,C,D and E,the zinc were added by 40?mg,60?mg,80?mg and 100?mg/(day·ram)(levels of zinc were 48.12?mg/kg,53.83?mg/kg,59.55?mg/kg and 27?mg/kg),respectively.The results showed:①there was significantly difference in seminal quality(P0.05) between the treatment and CK;②there was significantly difference in sperm vitality and sperm abnormality(P0.05) among the different levels of zinc,but no significantly difference in ejaculate volume,sperm No.of ejaculation and pH value(P0.05);③treatment A was the control group,which have very significantly difference in sperm No.of ejaculation with the others(P0.01),and treatment B had no significantly difference with treatment C and E(P0.05),treatment B and D,treatment D and E had significantly difference(P0.05);④every treatment had very significantly difference(P0.01)in sperm abnormality;⑤treatment A had very significantly difference in PH value with the other(P0.01);and treatment B had no significantly difference with treatment C(P0.05),treatment B had significantly difference with treatment D and E(P0.05),treatment C and D,E had no significantly difference(P0.05)and⑥the supplement of zinc for two month,the sheep which are lacking in zinc would have good seminal quality.
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