Late embryonic losses in supplemented grazing lactating dairy cows: risk factors and reproductive performance
The main objective of this study was to evaluate the risk factors for late embryonic loss (LEL) in supplemented grazing dairy cows. Additional objectives were to assess the incidence of LEL and its association with the reproductive performance of cows. A data set containing productive, reproductive,...
Guardado en:
| Autores principales: | , , , , , |
|---|---|
| Formato: | Articulo |
| Lenguaje: | Inglés |
| Publicado: |
2019
|
| Materias: | |
| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/146221 |
| Aporte de: |
| id |
I19-R120-10915-146221 |
|---|---|
| record_format |
dspace |
| institution |
Universidad Nacional de La Plata |
| institution_str |
I-19 |
| repository_str |
R-120 |
| collection |
SEDICI (UNLP) |
| language |
Inglés |
| topic |
Ciencias Veterinarias Late embryonic loss Reproductive performance Clinical disease Milk yield Grazing dairy cow |
| spellingShingle |
Ciencias Veterinarias Late embryonic loss Reproductive performance Clinical disease Milk yield Grazing dairy cow Quintero Rodríguez, Luis Ernesto Rearte, Ramiro Domínguez, Germán Sota, Rodolfo Luzbel de la Madoz, Laura Vanina Giuliodori, Mauricio Javier Late embryonic losses in supplemented grazing lactating dairy cows: risk factors and reproductive performance |
| topic_facet |
Ciencias Veterinarias Late embryonic loss Reproductive performance Clinical disease Milk yield Grazing dairy cow |
| description |
The main objective of this study was to evaluate the risk factors for late embryonic loss (LEL) in supplemented grazing dairy cows. Additional objectives were to assess the incidence of LEL and its association with the reproductive performance of cows. A data set containing productive, reproductive, and health records of 13,551 lactations was used. A retrospective case-control study involving 631 cows with LEL (cases) and 2,524 controls (4 controls per case within each study year) was run. A case of LEL was defined when the embryo had no heartbeat or there was evidence of detached membranes or floating structures including embryo remnants by ultrasonography (US) at 28 to 42 d post-artificial insemination (AI), whereas a non-case was defined as a cow diagnosed with positive pregnancy by US 28 to 42 d post-AI and reconfirmed as pregnant 90 ± 7 d post-AI. Four controls per case were randomly selected from the non-cases with a temporal matching criterion (±3 d around the date of the fecundating AI of the case). Multivariable logistic models were offered with the following predictors: year of LEL (2011 through 2015), season of LEL (summer vs. fall vs. winter vs. spring), parity (1 vs. 2 vs. ≥3), uterine disease (UD), non-uterine disease (NUD), body condition score at parturition, body condition score at 28 to 42 d post-AI (BCS-LEL), days in milk (DIM), and daily milk yield (MY). Statistical significance was set at P 3.00 (OR = 0.70, 95% CI = 0.53-0.91). The odds for LEL increased with UD (OR = 1.23, 95% CI = 1.01-1.49), NUD (OR = 1.24, 95% CI = 1.01-1.54), DIM (OR = 1.03, 95% CI = 1.00-1.05), and daily MY (OR = 1.14, 95% CI = 1.04-1.25) in univariable models only. Finally, the odds for LEL were not associated with year, season, DIM, and body condition score at parturition. In conclusion, LEL is associated with extended calving to pregnancy interval, and among its risk factors are parity number and BCS-LEL. |
| format |
Articulo Articulo |
| author |
Quintero Rodríguez, Luis Ernesto Rearte, Ramiro Domínguez, Germán Sota, Rodolfo Luzbel de la Madoz, Laura Vanina Giuliodori, Mauricio Javier |
| author_facet |
Quintero Rodríguez, Luis Ernesto Rearte, Ramiro Domínguez, Germán Sota, Rodolfo Luzbel de la Madoz, Laura Vanina Giuliodori, Mauricio Javier |
| author_sort |
Quintero Rodríguez, Luis Ernesto |
| title |
Late embryonic losses in supplemented grazing lactating dairy cows: risk factors and reproductive performance |
| title_short |
Late embryonic losses in supplemented grazing lactating dairy cows: risk factors and reproductive performance |
| title_full |
Late embryonic losses in supplemented grazing lactating dairy cows: risk factors and reproductive performance |
| title_fullStr |
Late embryonic losses in supplemented grazing lactating dairy cows: risk factors and reproductive performance |
| title_full_unstemmed |
Late embryonic losses in supplemented grazing lactating dairy cows: risk factors and reproductive performance |
| title_sort |
late embryonic losses in supplemented grazing lactating dairy cows: risk factors and reproductive performance |
| publishDate |
2019 |
| url |
http://sedici.unlp.edu.ar/handle/10915/146221 |
| work_keys_str_mv |
AT quinterorodriguezluisernesto lateembryoniclossesinsupplementedgrazinglactatingdairycowsriskfactorsandreproductiveperformance AT rearteramiro lateembryoniclossesinsupplementedgrazinglactatingdairycowsriskfactorsandreproductiveperformance AT dominguezgerman lateembryoniclossesinsupplementedgrazinglactatingdairycowsriskfactorsandreproductiveperformance AT sotarodolfoluzbeldela lateembryoniclossesinsupplementedgrazinglactatingdairycowsriskfactorsandreproductiveperformance AT madozlauravanina lateembryoniclossesinsupplementedgrazinglactatingdairycowsriskfactorsandreproductiveperformance AT giuliodorimauriciojavier lateembryoniclossesinsupplementedgrazinglactatingdairycowsriskfactorsandreproductiveperformance |
| bdutipo_str |
Repositorios |
| _version_ |
1764820460872138752 |