Evaluation of three-dimensional sonography for antral follicle count in cycling dairy cows

2018 ◽  
Vol 160 (12) ◽  
pp. 719-726
Author(s):  
A Schweizer ◽  
F Janett ◽  
H Bollwein
Keyword(s):  
Dairy Cows ◽  
Three Dimensional ◽  
Antral Follicle ◽  
Antral Follicle Count

scholarly journals Repeatability of antral follicle count according parity in dairy cows

2018 ◽  
Vol 64 (6) ◽  
pp. 535-539
Author(s):  
Keisuke KOYAMA ◽  
Takeshi KOYAMA ◽  
Masahito SUGIMOTO
Keyword(s):  
Dairy Cows ◽  
Antral Follicle ◽  
Antral Follicle Count

Reduced Antral Follicle Count in Dairy Cows of Reproductive Age Is Associated with a High Incidence of Aneuploidy and Alterations in the Localization of PGRMC1 and AURKB.

2012 ◽  
Vol 87 (Suppl_1) ◽  
pp. 298-298
Author(s):  
Federica Franciosi ◽  
Valentina Lodde ◽  
Irene Tessaro ◽  
Davide Corbani ◽  
Silvia C. Modina ◽  
...  
Keyword(s):  
Dairy Cows ◽  
Antral Follicle ◽  
Antral Follicle Count ◽  
Reproductive Age ◽  
High Incidence

1057 The association between Anti-Mullerian Hormone concentrations, antral follicle count and fertility measures in dairy cows

2016 ◽  
Vol 94 (suppl_5) ◽  
pp. 506-507
Author(s):  
M. Gobikrushanth ◽  
P. A. Dutra ◽  
C. A. Felton ◽  
A. Ruiz-Sanchez ◽  
T. C. Bruinjé ◽  
...  
Keyword(s):  
Dairy Cows ◽  
Antral Follicle ◽  
Antral Follicle Count

Association between antral follicle count and reproductive measures in New Zealand lactating dairy cows maintained in a pasture-based production system

2016 ◽  
Vol 85 (3) ◽  
pp. 466-475 ◽  
Author(s):  
Marcelo F. Martinez ◽  
Neil Sanderson ◽  
Laurel D. Quirke ◽  
Stephen B. Lawrence ◽  
Jennifer L. Juengel
Keyword(s):  
New Zealand ◽  
Dairy Cows ◽  
Production System ◽  
Antral Follicle ◽  
Antral Follicle Count ◽  
Lactating Dairy Cows

scholarly journals PHYSIOLOGY AND ENDOCRINOLOGY SYMPOSIUM: Anti-Müllerian hormone: a biomarker for the ovarian reserve, ovarian function, and fertility in dairy cows

2019 ◽  
Vol 97 (4) ◽  
pp. 1446-1455 ◽  
Author(s):  
Francesca Mossa ◽  
James J Ireland
Keyword(s):  
Dairy Cows ◽  
Ovarian Reserve ◽  
Maternal Nutrition ◽  
Ovarian Function ◽  
Bos Taurus ◽  
Antral Follicle ◽  
Antral Follicle Count ◽  
Dairy Heifers ◽  
Follicular Waves ◽  
Heritable Trait

Abstract This review summarizes studies we conducted to test the hypothesis that size of the ovarian reserve (number of healthy follicles and oocytes in ovaries) positively impacts ovarian function and fertility in cattle. Key results, primarily in Bos taurus dairy cattle, show that antral follicle count (AFC) during follicular waves is highly variable between individuals, but very highly repeatable within individuals. Cycling heifers with low (≤15 follicles ≥3 mm, ~20% of a herd) vs. a high AFC (≥25, ~20% of a herd) have a smaller ovarian reserve, higher FSH but lower anti-Müllerian hormone (AMH), androstenedione, estradiol, and progesterone concentrations. Moreover, cattle with low AFC have a thinner endometrium, decreased response of granulosal, thecal, or luteal cells to FSH or LH and a poorer response to superovulation compared to cattle with high AFC. Interestingly, cows with a very high AFC as heifers have reduced fertility, fewer lactations, and shorter herd longevity, whereas cows with a low vs. intermediate AFC have reduced fertility, fewer lactations, and shorter herd longevity. Anti-Müllerian hormone concentrations are static within individuals but highly positively correlated with AFC, but fertility is not correlated with circulating AMH concentration in heifers and dairy cows with low vs. a higher AMH as heifers have reduced fertility and a shorter herd longevity. Anti-Müllerian hormone concentrations in dairy heifers are a moderately heritable trait (36%), and negatively impacted by inadequate maternal nutrition during early pregnancy or high maternal somatic cell count. We conclude that genetic or environmental manipulations of AMH could enhance size of the ovarian reserve and ovarian function, thereby improving fertility, response to superovulation, and longevity in dairy cows.

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