English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

This study examined the dose-response effect of prostaglandin F 2α (PGF 2α ) when used to induce abortion in cows with two dead twins at pregnancy diagnosis 28-34 days post-AI (late embryonic period: LE) or at pregnancy confirmation 49-55 days post-AI (early fetal period: EF). The study population consisted of 415 cows receiving a single PGF 2α dose (PG1 group: 254 LE and 161 EF cows) and 200 receiving a 1.5 × PGF 2α dose (PG1.5 group: 121 LE and 79 EF cows). The induced abortion rate was significantly lower (chi-square test; p &lt; 0.0001) in the EF (34.6%) than LE cows (88%), and was also reduced ( p = 0.001) in the EF PG1 group (28%) compared with the EF PG1.5 group (48.1%). High milk production (≥45 kg) was the only factor influencing the induced abortion rate in LE cows (odds ratio 0.2; p &lt; 0.0001), whereas the odds ratio for induced abortion of PG1.5 cows was 2.3 ( p = 0.005) in EF cows. In conclusion, an increased PGF 2α dose had no effect on abortion induction during the late embryonic period and its rate was inversely associated with milk production. This higher PGF 2α dose did, however, offer benefits during the early fetal period.

Response to Therapeutic Abortion in Lactating Dairy Cows Carrying Dead Twins during the Late Embryo/Early Fetal Period