Risk Factors for the Efficiency of Artificial Insemination in Dairy Cows and Economic Impact of Failure of First Service Insemination in and around Haramaya Town, Oromia Region, Eastern Ethiopia

Table 2

Multiple logistic regression result showing the association of pregnancy rates with different factors.

Variable		OR (CI)	value
Breed	Local	Ref.	—
	Cross	2.25 (1.2–4.2)	0.011
Age in years	≤3	Ref.	—
	>3–6	1.35 (0.44–4.14)	0.604
	>6–9	0.92 (0.22–3.81)	0.905
	>9	0.50 (0.11–2.35)	0.378
Parity	Primiparous	Ref.	—
	Multiparous	1.22 (0.52–2.83)	0.649
Insemination time	Within 6 h	Ref.
	Within 6–11 h	0.38 (0.21–0.71)	0.002
	>11 h	0.57 (0.11–2.90)	0.502
Body condition	Medium	Ref.	—
	Moderate	1.60 (0.87–2.95)	0.128
Inseminators	<5 years of experience	Ref.	—
	5–8 years of experience	1.23 (0.62–2.47)	0.547
	>8 years of experience	1.34 (0.61–2.99)	0.463