Abstract
The objective of this study was to evaluate the effect of parturition induction on dairy cattle with long gestation (past due-date) single pregnancies on calf survivability, cow health, production, and reproduction. There was an induction period during which all cows and heifers reaching 282 days of gestation were induced with dexamethasone (n = 614). Control cows calved the year after, had a gestation length > 282 d and were not induced (n = 508). As the induced and non-induced groups were not contemporaneous, data were standardized using the ratio between the herd baselines for each period. Multivariate analyses of the data showed that induced cows were 1.41 times more likely (P = 0.020) to become pregnant in the lactation following the studied calving than non-induced cows with long gestation. There was no difference in the risk of difficult calvings, stillbirths, culling due to reproductive reasons, average milk production, average days open or risk of abortion in the following lactation between induced and non-induced cows. There seemed to be a relationship between parturition induction and a lower risk of post-partum death, although this was not statistically significant (P = 0.162), because including induction as a factor in the model markedly improved the fit of the data. There was no information on incidence of retained placenta (RP) for the non-induced group. In conclusion, parturition induction resulted in more cows becoming pregnant and a seemingly lower risk of post-partum death without affecting calving difficulty, calf viability, or milk production.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 136-144 |
| Number of pages | 9 |
| Journal | Canadian Journal of Veterinary Research |
| Volume | 74 |
| Issue number | 2 |
| State | Published - Apr 2010 |
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ASJC Scopus subject areas
- veterinary(all)
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Effect of systematic parturition induction of long gestation holstein dairy cows on calf survival, cow health, production, and reproduction on a commercial farm. / Villarroel, Aurora; Lane, V Michael.
In: Canadian Journal of Veterinary Research, Vol. 74, No. 2, 04.2010, p. 136-144.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Effect of systematic parturition induction of long gestation holstein dairy cows on calf survival, cow health, production, and reproduction on a commercial farm
AU - Villarroel, Aurora
AU - Lane, V Michael
PY - 2010/4
Y1 - 2010/4
N2 - The objective of this study was to evaluate the effect of parturition induction on dairy cattle with long gestation (past due-date) single pregnancies on calf survivability, cow health, production, and reproduction. There was an induction period during which all cows and heifers reaching 282 days of gestation were induced with dexamethasone (n = 614). Control cows calved the year after, had a gestation length > 282 d and were not induced (n = 508). As the induced and non-induced groups were not contemporaneous, data were standardized using the ratio between the herd baselines for each period. Multivariate analyses of the data showed that induced cows were 1.41 times more likely (P = 0.020) to become pregnant in the lactation following the studied calving than non-induced cows with long gestation. There was no difference in the risk of difficult calvings, stillbirths, culling due to reproductive reasons, average milk production, average days open or risk of abortion in the following lactation between induced and non-induced cows. There seemed to be a relationship between parturition induction and a lower risk of post-partum death, although this was not statistically significant (P = 0.162), because including induction as a factor in the model markedly improved the fit of the data. There was no information on incidence of retained placenta (RP) for the non-induced group. In conclusion, parturition induction resulted in more cows becoming pregnant and a seemingly lower risk of post-partum death without affecting calving difficulty, calf viability, or milk production.
AB - The objective of this study was to evaluate the effect of parturition induction on dairy cattle with long gestation (past due-date) single pregnancies on calf survivability, cow health, production, and reproduction. There was an induction period during which all cows and heifers reaching 282 days of gestation were induced with dexamethasone (n = 614). Control cows calved the year after, had a gestation length > 282 d and were not induced (n = 508). As the induced and non-induced groups were not contemporaneous, data were standardized using the ratio between the herd baselines for each period. Multivariate analyses of the data showed that induced cows were 1.41 times more likely (P = 0.020) to become pregnant in the lactation following the studied calving than non-induced cows with long gestation. There was no difference in the risk of difficult calvings, stillbirths, culling due to reproductive reasons, average milk production, average days open or risk of abortion in the following lactation between induced and non-induced cows. There seemed to be a relationship between parturition induction and a lower risk of post-partum death, although this was not statistically significant (P = 0.162), because including induction as a factor in the model markedly improved the fit of the data. There was no information on incidence of retained placenta (RP) for the non-induced group. In conclusion, parturition induction resulted in more cows becoming pregnant and a seemingly lower risk of post-partum death without affecting calving difficulty, calf viability, or milk production.
UR - http://www.scopus.com/inward/record.url?scp=77951443310&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=77951443310&partnerID=8YFLogxK
M3 - Article
C2 - 20592844
AN - SCOPUS:77951443310
VL - 74
SP - 136
EP - 144
JO - Canadian Journal of Veterinary Research
JF - Canadian Journal of Veterinary Research
SN - 0830-9000
IS - 2
ER -