Zagazig University Digital Repository
Home
Thesis & Publications
All Contents
Publications
Thesis
Graduation Projects
Research Area
Research Area Reports
Search by Research Area
Universities Thesis
ACADEMIC Links
ACADEMIC RESEARCH
Zagazig University Authors
Africa Research Statistics
Google Scholar
Research Gate
Researcher ID
CrossRef
The inseminating bull and plasma pregnancy-associated glycoprotein (PAG) levels were related to peripheral leukocyte counts during the late pregnancy/early postpartum period in high-producing dairy cows
Faculty
Veterinary Medicine
Year:
2012
Type of Publication:
Article
Pages:
1390-1397
Authors:
Lopez-Gatius, F, Abdelfatah-Hassan, A, Almeria, S, Serrano, B, de Sousa, N. M, Beckers, J. F
DOI:
10.1016/j.theriogenology.2011.11.002
Journal:
THERIOGENOLOGY ELSEVIER SCIENCE INC
Volume:
77
Research Area:
Reproductive Biology; Veterinary Sciences
ISSN
ISI:000302108500014
Keywords :
Sire effect, Pregnancy-associated glycoproteins, White blood cell counts, Peripartum immunity, Dairy cattle
Abstract:
It has been established that the immunologic and endocrine status of the peripartum dairy cow determines the animal's subsequent productive and reproductive performance. Thus, at parturition reduced immune functions of peripheral blood polymorphonuclear cells (PMN) has been observed after a peak in pregnancy-associated glycoproteins (PAGs), and, more recently, the inseminating bull was linked to plasma levels of bovine PAGs in pregnant Holstein-Friesian dairy cows. The present study sought to determine whether changes in leukocyte counts during the peripartum period, indicative of the animal's immune status, could be related to the inseminating bull and to PAG levels. Ninety-six clinically healthy, single pregnant cows in a commercial dairy herd were selected. Four samples were collected before parturition (on gestation Days 220-226, 234-240, 248-254, and 262-268) and two samples after parturition (on Days 14-21, and 28-34 postpartum) to analyze total and differential blood cell counts. Based on GLM analysis procedures of variance for repeated measures, the inseminating bull was found to affect counts of total leukocytes and lymphocytes (P < 0.001; between-subject effects) throughout the peripartum period. In addition, cows with high plasma PAG levels (> 900 ng/ml) on Day 262-268 of gestation had higher numbers of total leukocytes and neutrophils throughout the peripartum (P < 0.001; between-subject effects). Young animals (<= 1 lactation) had higher total leukocyte and lymphocyte counts than older cows (2 or more lactations) throughout the study period. These results reveal a clear relationship between the inseminating bull or plasma PAG levels and peripheral leukocyte counts during the peripartum period in dairy cows. (C) 2012 Elsevier Inc. All rights reserved.
Online
PDF
جامعة المنصورة
جامعة الاسكندرية
جامعة القاهرة
جامعة سوهاج
جامعة الفيوم
جامعة بنها
جامعة دمياط
جامعة بورسعيد
جامعة حلوان
جامعة السويس
شراقوة
جامعة المنيا
جامعة دمنهور
جامعة المنوفية
جامعة أسوان
جامعة جنوب الوادى
جامعة قناة السويس
جامعة عين شمس
جامعة أسيوط
جامعة كفر الشيخ
جامعة السادات
جامعة طنطا
جامعة بنى سويف