Relationship between plasma progesterone and pregnancy-associated glycoprotein concentrations during early pregnancy in dairy cows

被引：7

作者：

Barbato, Olimpia ^{[1
]}

Merlo, Mariacristina ^{[2
]}

Celi, Pietro ^{[3
]}

Sousa, Noelita M. ^{[4
]}

Guarneri, Luigi ^{[5
]}

Beckers, Jean F. ^{[4
]}

Gabai, Gianfranco ^{[2
]}

机构：

[1] Univ Perugia, Fac Vet Med, Dept Biopathol Vet Sci, I-06126 Perugia, Italy

[2] Univ Padua, Dept Comparat Biomed & Food Sci, I-35020 Legnaro, PD, Italy

[3] Univ Sydney, Fac Vet Sci, Narellan, NSW 2567, Australia

[4] Univ Liege, Fac Vet Med, B-4000 Liege, Belgium

[5] Studio Vet Associato EMBRYOVET, I-25028 Brescia, Italy

来源：

VETERINARY JOURNAL | 2013年 / 195卷 / 03期

关键词：

Dairy cattle; Early pregnancy; Progesterone; Pregnancy associated glycoprotein; Late embryonic mortality; CATTLE; MORTALITY;

D O I：

10.1016/j.tvjl.2012.06.028

中图分类号：

S85 [动物医学（兽医学）];

学科分类号：

0906 ;

摘要：

The relationship between the concentration of plasma progesterone (P4) during embryo attachment or at recognition of pregnancy, and that of pregnancy-associated glycoprotein (PAG) was assessed in dairy cows. The outcome of artificial insemination (AI) was classified as positive (AI+), negative (AI-), or late embryonic mortality (EM) by measuring circulating PAG concentrations and by ultrasonography. Based on P4 concentrations at either day 21 or day 15, AI+ and EM cows were classified into 'low' (P4 concentrations < mean) and 'high' (P4 concentrations > mean) P4 groups. In both experiments, the threshold of P4 concentration between the 'low' and 'high' groups was approximately 6 ng/mL. PAG concentrations were lower in the 'low' group only when P4 concentrations were below the threshold. The study findings suggest that a possible P4 threshold exists below which PAG secretion may be impaired. Crown Copyright (C) 2012 Published by Elsevier Ltd. All rights reserved.

引用

页码：385 / 387

页数：3

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