محیط کاربری
تبلیغات
آخرین مطالب
آرشیو
اخبار سایت
انتقادات و پیشنهادات

تبلیغات متنی

دکتر آرش امیدی، استاد گروه مدیریت بهداشت دام، دانشکده دامپزشکی دانشگاه شیراز



Compromised liver functions during the breeding period of clinically healthy Holstein cows
Article 2Volume 20, Issue 2, Spring 2019, Page 89-95  XMLPDF (221 K)
Document Type: Full paper (Original article)
DOI: 10.22099/IJVR.2019.5256
Authors
M. Mohebbi-Fani1A. Omidi  orcid 1A. Mirzaei2S. Nazifi2E. Pourtajabadi3M. Badkoobeh3
1Department of Animal Health Management, School of Veterinary Medicine, Shiraz University, Shiraz, Iran
2Department of Clinical Sciences, School of Veterinary Medicine, Shiraz University, Shiraz, Iran
3Graduated from School of Veterinary Medicine, Shiraz University, Shiraz, Iran
Abstract
Background: The sub-clinical carry-over effects of post-partum (PP) conditions and the problems independent of parturition may affect the cows’ performance during the breeding period. Aims: It was hypothesized that some mid-lactation cows may have compromised liver functions and calculating liver activity index (LAI; -1.5 to +1.5) may be helpful in detecting such conditions. Methods: Plasma lipid and protein profiles, retinol and ceruloplasmin were measured in 37 Holstein cows on days 60, 90, and 120 PP. Liver activity index was calculated using the measures of cholesterol, albumin and retinol. The results were interpreted using some health and performance indices. Results: The mean LAI was 0.00 ± 0.61. Sixteen cows (45.7%) were LAI‾ and 19 cows (54.3%) were LAI+. In LAI+ cows the concentrations of cholesterol and albumin were unchanged, but in LAI‾ cows both of them increased through the study (P<0.05). Greater concentrations of low density lipoproteins (LDL) (P<0.01) and lower concentrations of γ- and total globulins (P<0.05; day 60) were detected in LAI+ cows. Ceruloplasmin was not different between the LAI groups with the highest level on day 90. Cholesterol had the strongest and the most repeated correlations with LAI during the study. The correlation of albumin with LAI faded on day 120 and vitamin A had a relationship only on day 60 PP. Triglycerides (TGs), very low density lipoproteins (VLDL) (day 60) and LDL (days 60 and 90) had positive correlations with LAI. All globulin fractions showed negative correlations with LAI on day 60. Seventy percent of the cows without endometritis (day 30 PP) and 33% of the infected cows were LAI+ during the breeding period. About 79% of the cows with body condition score (BCS) loss ≤0.75 (day 60) and 38% of the cows with BCS loss >0.75 were LAI+ during the breeding period. Conclusion: Compromised liver functions may exist in dairy cows during the breeding period and may be detected by calculating LAI. The relationship of LAI during the progressed lactation with herd’s performance needs to be investigated.

http://ijvr.shirazu.ac.ir/article_5256_413745b5c6b4b2aebd07256f3e78f82c.pdf


  دیدگاه شما : [0] نظر   رای به مطلب :

تگ ها : Breeding period; Dairy cow; Liver activity index


موضوع : مباحث پژوهشی - مقالات پژوهشی
تعداد بازدید : 128 بار
ارسال شده در سه شنبه 4 تير 1398 - 08:27



دسته بندی
نظر سنجی

   در چه رشته ای تحصیل می کنید (کرده اید)؟


       

  1. دامپزشکی
  2. علوم دامی
  3. پزشکی
  4. رشته های دیگر

        

لینکستان
تبلیغات
اوقات شرعی
آمار
افراد آنلاين : 2
امروز : 9
ديروز : 28
اين هفته : 173
اين ماه : 584
امسال : 15566
کل بازديد : 101468
کل مطالب : 73
تگهای مطالب


تمامی حقوق این سایت متعلق به دکتر آرش امیدی می باشد
این وبسایت توسط سایت ساز مهر نسخه 2 محصولی از شرکت نگاه روشن پارس ایجاد شده است