Effects Of Zinc-Enriched Yeast And Selenuim-Enriched Yeast In Dietary On Reproductive Performance Of Boars In Summer

This-experiment-studies-the-effects-of-zinc-enriched-yeast-and-selenuim-enriched yeast in dietary on growth and reproductive performance inboars in summer, the objective of the study was to investigate the effects ofdietary zinc-enriched yeast levels and selenuim-enriched yeast levels ongrowth performance, sexual desire performance, sperm quality, seminalproductive hormones concentration et-al in boar and give the suggestion ofthe improvement of zinc-enriched yeast and selenuim-enriched yeast indietary in boar and provide the theory and technical foundation ofzinc-enriched yeast and selenuim-enriched yeast in dietary in boar.The whole experiment is divided into two parts:Part one: Selected 9 Duroc boars were randomly divided into 3 groupswith 3 Duroc boars each.a repeated 3×3 orthogonal test design wasused. The 3 groups were control group, treatment groupⅠ, treatment groupⅡ, respectively, control group was fed the basal ration and the treatmentgroupⅠ-treatment-groupⅡ-which-were-fed-the-basal-ration-with-80.00mg/kg zinc-enriched yeast and 115.00mg/kg zinc-enriched yeast, respectively.the objective of the study was to investigate the effects of zinc-enriched yeast in dietary on growth performance, sexual desire performance, spermquality and seminal productive hormones concentration in boar.The resultsof the experiment showed that:①there was no difference in Initial wt, Finalwt, ADG among 3 groups,②there was significantly in Initial ejaculationtime between treatment groupⅠand control group, treatment groupⅡandthe treatment groupⅠwas significantly higher than control group, treatmentgroupⅡ-in-Continuous-ejaculation-time.③there-was-no-difference-in-semen volume, sperm concentration among 3 groups, the sperm motility oftreatmentgroup I was higher-9.59％(P＜0.05), 6.67％(P＜0.05) than controlgroup, -treatment groupⅡ-respectively. the-available-sperm-of-treatmentgroup I-was higher 9.65％(P＜0.05), 10.74％(P＜0.01) than control group,treatment-groupⅡ-respectively.the-percent-of-inadequate-spermatozal-morphology of treatment groupⅠwas lower 34.73％(P＜0.01), 5.58％(P＜0.05)than control group, treatment groupⅡ, respectively.④there-were-pluscorrelation-significantly-between-sperm-motility-and-semen-volume(P＜0.05). there were minus correlation significantly between sperm concentrationand-semen-volume(P＜0.05)and-plus-correlation-significantly-between-perc-ent of inadequate spermatozal morphology and semen volume(P＜0.05).there were plus correlation significantly extremely between available spermand-semen-volume-sperm-concentration-sperm-motility(P＜0.01)-respectiv-ely.⑤the-FSH-concentration-of-treatment-group-Ⅱ-was-higher23.64％(P＜0.01)-13.33％(P＜0.05)-than-control-group-treatment-groupⅠ-respectively. the-LH-concentration-of-treatment-group I was-higher-12.86％(P＜0.01)-2.60％(P＞0.05)-than-control-group-treatment-groupⅡ-respectively. the-semin-al-Testone-concentration-of-treatment-group I was-higher-34.56％(P＜0.01)-28.87％(P＜0.01)than-control-group-treatment-groupⅡrespectively. the-blo od-Testone-concentration-of-treatment-groupⅠwas-higher-11.77%(P＜0.05)-25.00%(P＜0.01)-than-control-group,-treatment-groupⅡ-respectively.the-serum zinc content of experiment-groupⅡwas higher 104.68%(P＜0.01)-66.86%(P＜0.01)-than-control-group-treatment-groupⅡ-respectively.⑥there-were-plus-correlation-significantly-extremely-between-LH-concentration-and-seminal-Testone-concentration(P＜0.01)-there-were-plus-correlation-significantly-between-seminal-Testone-concentration-and-FSH-concentration(P＜0.05),-there-were-plus-correlation-significantly-between-the-blood-Testone-concentration-and-FSH-concentration-seminal-Testone-concentration(P＜0.05)-respectively.there-were-plus-correlation-significantly-between-serum-Zinc-content-and-the-seminal-Testone-concentration-serum-Testone-concentration(P＜0.05)-respectively.⑦there-were-plus-correlation-significantly-between-FSH-concentration-and-sperm-motility-available-sperm(P＜0.05)-respectively.there-were-plus-correlation-significantly-between-the-blood-Testone-concentration-and-sperm-concentration(P＜0.05).there-were-plus-correlation-significantly-between-serum-zinc-content-and-sperm-motility,-available-sperm(P＜0.05)-respectively.Part two: Selected 9 Landarce boars were randomly divided into 3groups with 3 Landarce boars each.a repeated 3×3 orthogonal test designwas used.The 3 groups were control group, treatment groupⅠ,treatmentgroupⅡ, respectively, control group was fed the basal ration and thetreatment-groupⅠ-treatment-groupⅡwhich-were-fed-the-basal-ration-with-0.35mg/kg-selenium-enriched yeast and 0.50mg/kg selenium-enrichedyeast, respectively, the objective of the study was to investigate the effectsof dietary selenium-enriched yeast on growth performance, sexualdesire-performance-sperm-quality-and-seminal-reproductive-hormones-concentration in Landarce boar.The results of the test showed that:①there was no difference in Initial wt,Final wt,ADG among 3 groups Landarceboars(P＞0.05).②the-initial-ejaculation-time-of-treatment-groupⅡwas-higher 6.93%(P＜0.05), 2.62%(P＞0.05) than control group, treatment groupⅠ,respectively.the-continuous-ejaculation-time-of-treatment-groupⅡwas-higher-6.98%(P＜0.05)-5.06%(P＜0.05)-than-control-group-treatment groupⅠ,respectively.③there-was-no-difference-in-semen-volume-sperm-concentration-among 3 groups(P＞0.05), there was significantly in sperm motilitybetween treatment groupⅠand treatment group-Ⅱ,control group(P＜0.05)in the 45th day of experiment, respectively, there was significantly inavailable sperm between treatment groupⅠand treatment groupⅡ,controlgroup(P＜0.05) in the 15th,30th,45th day of experiment, respectively, therewas significantly in the percent of inadequate spermatozal morphologybetween treatment groupⅠand treatment groupⅡ,control group(P＜0.05)in the 15th,30th,45th day of experiment, respectively.④there were minuscorrelation-significantly-between-sperm-concentration-and-semen-volume(P＜0.05).there-were-minus-correlation-significantly-between-sperm-motility-and-percent-of-inadequate-spermatozal-morphology(P＜0.05).there-were-plus-correlation-significantly-between-available-sperm-and-semen-volume,sperm concentration,sperm motility(P＜0.01), respectively.and there wereplus correlation significantly between available sperm and the percent ofinadequate spermatozal morphology(P＜0.05).⑤the FSH concentration oftreatment-groupⅠwas-higher-20.37%(P＜0.01)-10.17%(P＜0.05)-than-control-group-treatment-groupⅡ-respectively.the-LH-concentration-of-treatment-groupⅠwas-higher-30.77%(P＜0.01)-4.62%(P＜0.05)-than-control-group-treatment-groupⅡ-respectively.the-seminal-Testone-concentration-of-treatment-groupⅡwas-higher36.76%(P＜0.01)-7.39%(P＜0.05)-than-control-gro -up,-treatment groupⅠ-respectively. the blood Testone concentration oftreatment-groupⅡwas-higher-20.08%(P＜0.01)-11.81%(P＜0.05)-than-control-group-treatment-groupⅠ-respectively.-there-were-significantly-extremely-in-serum-selenium-content-between-experiment-groupⅡand-eontrol-group-experiment-groupⅠ-respectively.there-were-significantly-extremely-in-serum-selenium-content-between-experiment-groupⅠand-control-group.⑥there-were-plus-correlation-significantly between LH-concentrationand-FSH-concentration(P＜0.05)-there-were-plus-correlation-significantly-between-seminal-Testone-concentration-and-FSH-concentration(P＜0.05)-there-were-plus-correlation-significantly-between-the-seminal-Testone-concentration-and-LH-concentration(P＜0.01)-there-were-plus-correlation-significantly-between-blood-Testone-concentration-and-FSH-concentration(P＜0.05).-there-were-plus-correlation-significantly-between-serum-selenium-content-and-blood-testone-seminal-testone(P＜0.05).respectively.-⑦there-were-plus-correlation-significantly-between-FSH-concentration-and-available-sperm(P＜0.05)-there-were-plus-correlation-significantly-between-LH-concentration-and-sperm-motility(P＜0.05)-there-were-plus-correlation-significantly-between-the-blood-Testone-concentration-and-sperm-motility(P＜0.05).-there-were-plus-correlation-significantly-between-the-serum-selenium-content-and-sperm-motility(P＜0.05)-available-sperm(P＜0.05) -respectively.