Fertility of Holstein cows and heifers submitted to timed artificial insemination and receiving one or two doses (12 h apart) of semen

Fertility of Holstein cows and heifers submitted to timed artificial insemination and receiving one or two doses (12 h apart) of semen

The objective of this retrospective study was to assess the effect of receiving a single (n = 50,285) or double (n = 4392) artificial insemination (AI), 12 h apart, within a timed artificial insemination protocol on pregnancy per AI (P/AI) in nulliparous heifers (inseminated with either sex‐sorted o...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Reproduction in domestic animals 2023-01, Vol.58 (1), p.39-47
Hauptverfasser: Mellado, Miguel, Treviño, Lucía M., Chavez, María I., Véliz, Francisco G., Macías‐Cruz, Ulises, Avendaño‐Reyes, Leonel, García, José E.
Format: Artikel
Sprache:eng
Schlagworte:
Animals
Artificial insemination
Body Fluids
Cattle
Dinoprost
Estrus Synchronization
Female
Fertility
Gonadotropin-Releasing Hormone
Heat
Heat stress
Heat tolerance
Insemination, Artificial - veterinary
Lactation
Ovsynch
Pregnancy
Progesterone
Reproduction (biology)
Retrospective Studies
Semen
Temperature effects
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:The objective of this retrospective study was to assess the effect of receiving a single (n = 50,285) or double (n = 4392) artificial insemination (AI), 12 h apart, within a timed artificial insemination protocol on pregnancy per AI (P/AI) in nulliparous heifers (inseminated with either sex‐sorted or conventional semen) and pluriparous Holstein cows in a commercial dairy herd. Also, this study aimed to investigate the relationship between temperature‐humidity index (THI) and time of the first AI and fertility. Fertility of cows receiving two AI with normothermia (THI 
ISSN:0936-6768
1439-0531
DOI:10.1111/rda.14250