Pre-synchronization with GnRH or hCG enhances fertility outcomes of heat synch protocol in Holstein dairy cows across parities: A pilot study.
Navidifar; Kaveh; Hosseini; Keshtkar Zolghadr; Simiyari; Taghinasab; Salehi; Kahyani · 2026 · Veterinary and animal science
WASTE classifies this as Negative / Null Result Report · AI classification, approximate
The study found no significant effect — useful as a negative control or null benchmark for your own design.
Abstract (excerpt)
Efficient estrus synchronization is important for improving reproductive performance in dairy herds; however, variations in ovarian activity among cows of different parities may influence responses to synchronization protocols. The present…
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Metadata source: PubMed · DOI 10.1016/j.vas.2026.100739