| Effects of a progesterone-based oestrous synchronization protocol in 51- to 57-day postpartum high-producing dairy cows. | |
| | |
MedLine Citation:
|
PMID: 19930138 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
|
The aim of this study was to investigate the effect of applying a progesterone-based oestrous synchronization protocol at 51-57 days postpartum in high-producing dairy cows. The data analysed were derived from 1345 lactating cows. Cows between 51 and 57 days postpartum were assigned to the groups: control, PRID (receiving a progesterone-releasing intravaginal device for 9 days, and prostaglandin F(2α) 24 h before PRID removal) or GnRH-PRID (the same as the PRID group plus GnRH at PRID insertion). Oestrus was detected by using pedometers and confirmed by examination of the genital tract at AI. Oestrous and conception rates before days 71-77 postpartum, pregnancy loss in early pregnant cows or the cumulative conception rate registered on day 120 postpartum were considered as the dependent variables in four consecutive logistic regression analyses. Based on the odds ratios, the oestrous rate increased by a factor of 1.73 in cows showing oestrus before treatment for each unit increase in the number of previous oestruses; decreased by a factor of 0.44 in the control group with respect to the treatment groups; and by a factor of 0.61 in cows without luteal structures at treatment with respect to cows with corpora lutea. The conception rates of cows inseminated before days 71-77 postpartum remained similar across the groups, whereas the likelihood of pregnancy loss for cows becoming pregnant during this period was 0.11 times lower in the PRID group than in the control. Based on the odds ratio, the likelihood of a higher cumulative conception rate on day 120 postpartum: increased in cows showing oestrus before treatment by a factor of 1.41 for each unit increase in the number of previous oestruses, was reduced 0.56-fold in control cows compared with treated cows, and was also reduced by a factor of 0.98 for each kilogram of milk production increase recorded at treatment. In conclusion, although oestrous synchronization programmes performed in this study did not improve fertility, cows treated with progesterone could be inseminated earlier than untreated cows, such that the treatments increased the cumulative pregnancy rates determined on day 120 postpartum. In addition, fewer pregnancy losses were observed in early pregnant cows in the PRID group than the GnRH-PRID group. |
| | |
Authors:
|
I Garcia-Ispierto; F López-Gatius; G Bech-Sàbat; Jl Yániz; E Angulo; C Maris; S Floc'h; A Martino |
Related Documents
:
|
1474008 - Contribution of breed, cow weight, and milk yield to the traits of heifers and cows in ... 1555118 - Pharmacologic manipulation of fertility. 7123828 - Effect of progesterone treatment on the calving-to-conception interval of friesian dair... 15589278 - Spontaneous reduction of advanced twin embryos: its occurrence and clinical relevance i... 17889858 - Role of antral follicle count in controlled ovarian hyperstimulation and intrauterine i... 2724238 - Abrupt reversal of gestational autoimmune thrombocytopenia after delivery. a case report. |
Publication Detail:
|
Type: Journal Article |
Journal Detail:
|
Title: Reproduction in domestic animals = Zuchthygiene Volume: 45 ISSN: 1439-0531 ISO Abbreviation: Reprod. Domest. Anim. Publication Date: 2010 Oct |
Date Detail:
|
Created Date: 2011-04-04 Completed Date: - Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 9015668 Medline TA: Reprod Domest Anim Country: Germany |
Other Details:
|
Languages: eng Pagination: e168-73 Citation Subset: IM |
Copyright Information:
|
© 2009 Blackwell Verlag GmbH. |
Affiliation:
|
Department of Animal Production, University of Lleida, Lleida, Spain Institute of Environmental Sciences (IUCA) and Department of Animal Production, University of Zaragoza, Huesca, Spain CEVA Santé Animale, Libourne, France CEVA Salud Animal, Barcelona, Spain. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
|
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Antioxidative effects of astaxanthin against nitric oxide-induced oxidative stress on cell viability...
Next Document: Successful resolution of severe hepatopulmonary syndrome following liver transplantation.