| Distribution of sexes within the left and right uterine horns of cattle. | |
| | |
MedLine Citation:
|
PMID: 19962748 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
In cattle, limited data are available regarding the sex ratio of the offspring in relation to the horn of gestation. Therefore, the objective of this study was to evaluate the sex ratio of fetuses gestated in the left and right uterine horns of cattle (Bos taurus, Bos indicus and crosses). The distribution of male and female fetuses in the left and right uterine horn was analyzed on gravid, abattoir-derived reproductive tracts and artificially inseminated crossbred cows. The total number of fetuses/calves and the sex of the fetuses/calves gestated in each uterine horn were used as the end point for side comparisons using the Glimmix Procedure. Of 64 gravid reproductive tracts evaluated, 29 (45.3%) pregnancies occurred in the left uterine horn, whereas 35 (54.7%) occurred in the right. The sex ratio (% males) of fetuses in the left uterine horn (37.9%) was significantly lower than the sex ratio detected in the right uterine horn (65.7%). Of 113 pregnancies evaluated in artificially inseminated heifers, 53 (46.9%) occurred in the left uterine horn, whereas 60 (53.1%) occurred in the right uterine horn. The sex ratio of calves gestated in the left uterine horn (35.8%) was significantly lower than the sex ratio of calves gestated in the right uterine horn (63.3%). In conclusion, in these experiments, a significantly greater proportion of males were gestated in the right uterine horn of cattle and a greater proportion of females in the left uterine horn. Further investigation is needed to determine the mechanisms underlying the observed disparity of the expected sex ratio within the uterine horns of cattle. |
| | |
Authors:
|
A M Giraldo; D Hylan; K R Bondioli; R A Godke |
Related Documents
:
|
21970248 - Perforated peptic ulcer (ppu) in pregnancy during ramadan fasting. 15890658 - N-acylphosphatidylethanolamine-hydrolyzing phospholipase d is an important determinant ... 8349518 - Influence of initial length of uterus per embryo and gestation stage on prenatal surviv... 1575348 - The vascular mechanism of ephedrine's beneficial effect on uterine perfusion during pre... 3946508 - Amniotic fluid phosphatidylglycerol and phosphatidylcholine phosphorus as predictors of... 16548048 - Serum protein pattern during cow pregnancy: acute-phase proteins increase in the peripa... |
Publication Detail:
|
Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2009-12-04 |
Journal Detail:
|
Title: Theriogenology Volume: 73 ISSN: 1879-3231 ISO Abbreviation: Theriogenology Publication Date: 2010 Mar |
Date Detail:
|
Created Date: 2010-02-09 Completed Date: 2010-05-13 Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 0421510 Medline TA: Theriogenology Country: United States |
Other Details:
|
Languages: eng Pagination: 496-500 Citation Subset: IM |
Copyright Information:
|
Copyright 2010 Elsevier Inc. All rights reserved. |
Affiliation:
|
Revivicor, Inc., Blacksburg, Virginia, USA. agiraldo@revivicor.com |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Animals Animals, Newborn Cattle / physiology* Female Fetus Logistic Models Male Pregnancy Sex Ratio* Uterus / physiology* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Lower cortisol levels in children with asthma exposed to recurrent maternal distress from birth.
Next Document: The effect of donor age on progression of spermatogenesis in canine testicular tissue after xenograf...