Document Detail


Pre-breeding ovaro-uterine ultrasonography and its relationship with first service pregnancy rate in seasonal-calving dairy herds.
MedLine Citation:
PMID:  19323798     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The objectives of the study were to characterize an ultrasound reproductive tract scoring (URTS) system to assess suitability for breeding in dairy cows, to describe the prevalence of these scores in commercial dairy herds and to examine their relationship with subsequent fertility. Ultrasound examinations (7797) were performed on 5751 Holstein-Friesian cows prior to breeding in 62 seasonally calving herds over 2 years. Data recorded from images of both ovaries and the uterus were combined into a six point scoring system and the prevalence of cows with cystic ovarian follicles and uterine abscesses and adhesions was recorded separately. The prevalence of ovulatory cows which had completed uterine involution (score 1), or had mild (2) or moderate endometritis (3) was 62.5%, 21.7% and 2.2%, respectively. The prevalence of anovulatory cows with moderate endometritis (4), ovulatory cows with pyometra (5) and anovulatory cows which had completed uterine involution (6) was 3.3%, 2.2% and 8.1%, respectively. The interval between calving and examination differed between cows with each of the scores 1, 2, 5 and 6 (61, 46, 53 and 50 days, respectively, p < 0.05) but not between cows with scores 3 and 4 (37 and 35 days, respectively). Ovulatory cows which had completed uterine involution (score 1) had a higher likelihood of pregnancy to first service than ovulatory or anovulatory cows which had not completed uterine involution (p </= 0.10). The prevalence of cows with cystic ovarian follicles or abscesses or adhesions of the reproductive tract was 3.9% and 1.2%, respectively. In conclusion, 29% and 11% of cows in seasonally calving and breeding dairy herds had not completed uterine involution or were anovulatory prior to the mating start date, respectively. Both conditions, detected using a URTS system, significantly reduced first service pregnancy rate in these pasture-based dairy herds.
Authors:
J F Mee; F Buckley; D Ryan; P Dillon
Related Documents :
19968838 - Improved prediction of ovulation time may increase pregnancy rates to artificial insemi...
18359068 - Comparison of oocyte developmental competence and follicular steroid content of nullipa...
7661818 - Oestrus detection techniques and insemination strategies in bos indicus heifers synchro...
1257498 - Altered levels of pgf in cat spinal cord tissue following traumatic injury.
24155928 - High frequency ultrasound for in vivo pregnancy diagnosis and staging of placental and ...
23143408 - Does mode of delivery affect neonate oxidative stress in parturition? review of literat...
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Reproduction in domestic animals = Zuchthygiene     Volume:  44     ISSN:  1439-0531     ISO Abbreviation:  Reprod. Domest. Anim.     Publication Date:  2009 Apr 
Date Detail:
Created Date:  2009-03-27     Completed Date:  2009-06-10     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9015668     Medline TA:  Reprod Domest Anim     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  331-7     Citation Subset:  IM    
Affiliation:
Teagasc, Moorepark Dairy Production Research Centre, Fermoy, County Cork, Ireland. john.mee@teagasc.ie
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:
Abscess / ultrasonography,  veterinary
Animals
Breeding*
Cattle / physiology*
Cattle Diseases / epidemiology,  ultrasonography
Dairying
Endometritis / ultrasonography,  veterinary
Female
Fertility*
Ovarian Cysts / ultrasonography,  veterinary
Ovary / ultrasonography*
Pregnancy
Pregnancy Rate
Seasons
Uterine Diseases / ultrasonography,  veterinary
Uterus / ultrasonography*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


Previous Document:  Smooth muscle cells of the bovine cervical stroma may have a secretory, rather than a contractile fu...
Next Document:  Genetic parameters for semen traits in AI boars estimated from data on individual ejaculates.