Porcine Health Management

Table 7 Estimated means of weaning-to-estrus interval (WEI)^a, estrus duration (ED)^a and number of inseminations per estrus according to parity in farms B and C, as determined by the system. Variables in the same row with different superscript are significantly different

From: The evaluation of an artificial intelligence system for estrus detection in sows

	Parity				p value
	1	2	3–4	5+	p value
Farm B
WEI (hours)	99.94^a	98.00^a	92.75^b	92.42^b	< 0.001^*
ED (hours)	62.21^a	64.15^a,b	65.48^b	65.31^a,b	0.036^*
Number of inseminations	1.70^a	1.56^b	1.57^b	1.50^b	< 0.001^*
Farm C
WEI (hours)	98.13	97.97	96.19	97.65	0.490
ED (hours)	56.42^a	52.76^a,b	50.36^b	51.15^b,c	0.001^*
Number of inseminations	1.63^a	1.46^b	1.28^c	1.30^b,c	< 0.001^*

*The p value was considered statistically significant (p ≤ 0.05)

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ISSN: 2055-5660

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