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      • Open Access Article

        1 - Holstein calf monster Duplication of a part of the foot (Bimelia) with absence of the skin (Epitheliogenesis imperfecta) (A case report)
        S.M Hosseini M.H Youssefi M.R Youssefi SH Omidzahir عباس مؤمنی
        Congenital abnormality is effected by genetical or environmental causes. Congenitalabnormality and inherited disorders are form, situation, structure and functional abnormality thatexisting in the time of birth. These abnormalites can change perfectly just a structure o More
        Congenital abnormality is effected by genetical or environmental causes. Congenitalabnormality and inherited disorders are form, situation, structure and functional abnormality thatexisting in the time of birth. These abnormalites can change perfectly just a structure or afunction of system or part of several system of body. Such form of lesion is rare that indeedhappened two form of congenital abnormality. occurrded both duplication of a part of the foot(Bimelia) and absence of the skin (Epitheliogenesis imperfecta). Simultaneous occurrence oftwo congenital malformations is rare. We report these two in a Holstein calf. Manuscript profile
      • Open Access Article

        2 - پاسخ‌های ایمنی و پاسخ‌های برخی از متابولیت‌های خون به مکمل ریشه شیرین بیان افزوده شده در جیره گوساله‌های ماده هولشتاین
        R. Sajjadi A.A. Solati M. Khodaei Motlagh M. Kazemi Bonchenari
        در دهه اخیر گیاهان دارویی متفاوتی در تغذیه دام و طیور مورد استفاده قرار گرفته است. به نظر می‌رسد امکان جایگزینی برخی از گیاهان دارویی به جای آنتی‌بیوتیک‌های وسیع الطیف وجود دارد. ریشه شیرین بیان یک گیاه دارویی محسوب می‌شود که در مطالعات متفاوتی مورد استفاده قرار گرفته ا More
        در دهه اخیر گیاهان دارویی متفاوتی در تغذیه دام و طیور مورد استفاده قرار گرفته است. به نظر می‌رسد امکان جایگزینی برخی از گیاهان دارویی به جای آنتی‌بیوتیک‌های وسیع الطیف وجود دارد. ریشه شیرین بیان یک گیاه دارویی محسوب می‌شود که در مطالعات متفاوتی مورد استفاده قرار گرفته است. در مطالعه حاضر تأثیر افزودن ریشه شیرین بیان بر عملکرد و شاخص‌های انرژی (گلوکز، اسیدهای چرب غیر استریفه و بتاهیدروکسی بوتیرات) و عملکرد سیستم ایمنی (ایمنوگلوبین کل، ایمنوگلوبین G و ایمنوگلوبین A) گوساله‌های ماده هولشتاین مورد بررسی قرار گرفت. تعداد 14 رأس گوساله ماده با میانگین وزن 5/85 کیلوگرم در قالب طرح کاملاً تصادفی و در 2 تیمار قرار گرفتند (7 رأس گوساله در هر تیمار). تیمار شاهد به عنوان تیمار C در نظر گرفته شد و تیماری که مکمل شیرین بیان دریافت کرده بود به عنوانL  در نظر گرفته شد. آزمایش 10 هفته در نظر گرفته شد. هفته اول به عنوان دوره عادت دهی در نظر گرفته شد. مصرف خوراک به صورت روزانه بررسی شد و نمونه خون دو بار در طول آزمایش اندازه‌گیری شد. نتایج نشان داد که میانگین مصرف ماده خشک برابر 1790 و1860 گرم در روز برای تیمارهای C و L بود (05/0<P). غلظت اسیدهای چرب استریفه نشده در بین دو تیمار تفاوت معنی‌داری نشان داد (05/0P<). غلظت ایمنوگلوبین A تفاوت معنی‌داری نشان نداد اما غلظت کل ایمنوگلوبین‌ها و ایمنوگلوبین G تفاوت معنی‌داری در بین دو تیمار نشان دادند (05/0P<). غلظت کل ایمنوگلوبین‌ها برابر 1/150 و 2/138 میلی‌گرم در دسی‌لیتر برای تیمارهای C وL  بود که نشان دهنده بالاتر بودن این فراسنجه تا حدود 31 درصد با استفاده مکمل در برابر تیمار شاهد بود. به طور خلاصه نتیجه‌گیری شد با وجودی که مکمل شیرین بیان عملکرد دامها را تحت تأثیر قرار ندادده بود اما این مکمل توانست وضعیت انرژی در گوساله‌ها را بهبود داده و همچنین وضعیت ایمنی را در این دام‌ها بهبود دهد. Manuscript profile
      • Open Access Article

        3 - Effects of Replacing Mineral Selenium Supplement with Selenium Nanoparticles on Blood Parameters of Dairy Calves
        Mohammad Karimi mehdi Ganjkhanlou farhang fatahei
        The purpose of this study was to investigate the effects of replacing mineral selenium supplements with nano selenium particles in the feeding of dairy calves and its effects on blood metabolites, and improving the growth performance and skeletal structure of infant cal More
        The purpose of this study was to investigate the effects of replacing mineral selenium supplements with nano selenium particles in the feeding of dairy calves and its effects on blood metabolites, and improving the growth performance and skeletal structure of infant calves. The number of 32 newborn Holstein calves with an average body weight of 37.85 ± 4.35 kg in the form of a completely randomized design with 4 treatments (eight calves in each treatment) for 83 days according to the supplemental consumption of milk or drinking water with sources Different selenium were placed. Treatments include: 1) inorganic selenium: providing 0.3 mg of selenium per kilogram of dry matter with sodium selenite, 2) low level of nano selenium: providing 0.15 mg of selenium per kilogram of dry matter with nanoparticles prepared from selenium, 3 (Medium level of nano-selenium: providing 0.3 mg of selenium per kilogram of dry matter with nanoparticles prepared from selenium, 4) High level of nano-selenium: providing 0.45 mg of selenium per kilogram of dry matter with nanoparticles prepared from selenium. The results showed that the calves that received nano selenium had no significant difference in the parameters of aspartate transferase and alanine transaminase compared to sodium selenite. The concentration of glutathione peroxidase in 42 days in nano selenium treatments increased and malondialdehyde decreased linearly significantly compared to mineral selenium (P=0.03). The results of this study showed that nano selenium was effective in improving the antioxidant status of calf blood during post-weaning. Manuscript profile
      • Open Access Article

        4 - Effects of Replacing Mineral Selenium Supplement with Selenium Nanoparticles on Feed Digestibility and Ruminal Parameters of suckling Dairy Calves
        Mohammad Karimi mehdi Ganjkhanlou farhang fatehi
        This study aimed to investigate the effects of replacing mineral selenium supplement with nano-selenium particles in feeding infant calves and its effects on nutrient digestibility and, rumen fermentation characteristics. The number of 32 newborn Holstein calves with an More
        This study aimed to investigate the effects of replacing mineral selenium supplement with nano-selenium particles in feeding infant calves and its effects on nutrient digestibility and, rumen fermentation characteristics. The number of 32 newborn Holstein calves with an average body weight of 37.85 ± 4.35 kg in the form of a completely randomized design with 4 treatments (eight calves in each treatment) for 83 days according to the supplemental consumption of milk or drinking water with sources different selenium were placed. Treatments include: 1) mineral selenium: providing 0.3 mg of selenium per kilogram of dry matter with sodium selenite source, 2) Low level of nano selenium: providing 0.15 mg of selenium per kilogram of dry matter with nanoparticles prepared from selenium source, 3 (Medium level of nano-selenium: providing 0.3 mg of selenium per kilogram of dry matter with nanoparticles prepared from selenium source, 4) High level of nano-selenium: providing 0.45 mg of selenium per kilogram of dry matter with nanoparticles prepared from selenium source. The results showed that improve the digestibility of protein and insoluble fibers in neutral detergent with nano-selenium. Ruminal ammonia nitrogen concentration in calves fed with rations supplemented with nano-selenium tended to decrease (p = 0.08) in a quadratic way, and its average level was the lowest. Acetate concentration for calves fed nano-selenium decreased (p < 0.01), while propionate concentration increased (p < 0.05) for calves fed nano-selenium. The results of this study showed that nano-selenium was effective in improving feed digestibility. Manuscript profile
      • Open Access Article

        5 - The effects of replacing mineral selenium supplement with selenium-nano particles on the performance of dairy calves
        Mohammad Karimi mehdi Ganjkhanlou farhang fatahei aboulfazl zali sadeghi mostafa ronak rafipor
        The purpose of this study was to investigate the effects of replacing mineral selenium supplement with nano selenium particles in the feeding of infant calves and its effects on nutrient digestibility, rumen fermentation characteristics, blood metabolites, and improving More
        The purpose of this study was to investigate the effects of replacing mineral selenium supplement with nano selenium particles in the feeding of infant calves and its effects on nutrient digestibility, rumen fermentation characteristics, blood metabolites, and improving the growth performance and skeletal structure of infant calves. The number of 32 newborn Holstein calves with an average body weight of 37.85 &plusmn; 4.35 kg in the form of a completely randomized design with 4 treatments (eight calves in each treatment) for 83 days according to the supplemental consumption of milk or drinking water with sources Different selenium were placed. Treatments include: 1) inorganic selenium: providing 0.3 mg of selenium per kilogram of dry matter with sodium selenite, 2) low level of nano selenium: providing 0.15 mg of selenium per kilogram of dry matter with nanoparticles prepared from selenium, 3 (Medium level of nano-selenium: providing 0.3 mg of selenium per kilogram of dry matter with nanoparticles prepared from selenium, 4) High level of nano-selenium: providing 0.45 mg of selenium per kilogram of dry matter with nanoparticles prepared from selenium. . The results showed that supplementing milk with selenium nanoparticles had no effect on the performance of calves during the pre-weaning period, but significantly improved it after weaning compared to calves that were fed sodium selenite. The feed efficiency in the second period increased exponentially (P&lt;0.01) and the average level was the highest. Improve the digestibility of protein and insoluble fibers in neutral detergent with nanoselenium. Some parameters of skeletal growth were improved by supplementation with selenium nanoparticles. Manuscript profile