The effect of various administration routs of D-cloprostenol at the time of artificial insemination on conception rate in dairy cattle

Figures & data

Table 1. Odds ratios of the treatment in the univariate logistic regression models for conception rate of heifers.

	Total	Conception rate% (n)	Odds ratio	p Value
IM	53	73.6 (39)	1.702	.281
IU	19	84.2 (16)	3.259	.109
Control	29	62.1 (18)	–	–

IM: intramuscular; IU: intrauterine.

Table 2. Odds ratios of the included variables in the final multivariate logistic regression models (treatments, parity and DIM) for conception rate of adult cows.

	Total	Conception rate %	Odds ratio	95% confidence interval	p Value
Control	207	40.6	1		–
IM	163	60.1	1.911	1.21 − 3.01	.005
IV	155	32.3	0.722	0.48 − 1.08	.294
IU	134	50	1.265	0.82 − 1.96	.110
Primiparous	159	44.3	1	–	–
Multiparous	399	39.1	0.688	0.51 − 0.92	.014
DIM ≤ 100	265	43.02	1	–	–
DIM > 100	293	38.23	0.689	0.51 − 0.93	.015

IM: intramuscular; IV: intravenous; IU: intrauterine; DIM: days in milk.

Table 3. Mean serum progesterone level (s) (ng/mL) of different groups on days 0, 4, and 15post-insemination.

	Insemination day	After 4 day	After 15 day
Control	0.77 ± 0.6^a	1.64 ± 0.62^a	6.5 ± 0.66^b
IM	0.37 ± 0.7^a	1.02 ± 0.72^a	8.94 ± 0.7^b
IV	0.46 ± 0.62^a	0.77 ± 0.66^a	8.23 ± 0.66^b
IU	0.68 ± 0.72^a	1.03 ± 0.85^a	8.72 ± 0.91^b
Total	0.57 ± 0.33^a	1.12±.036^a	8.09 ± 0.37^b

Different lowercase letters indicate a significant difference between different treatment groups on different days.

IM: intramuscular; IV: intravenous; IU: intrauterine.