Grazing behaviour of Cinta senese and its crossbreed pigs

Figures & data

Table 1. Main and detailed behaviours observed.

Main activity	Detailed activity
Feeding	On grass: grass feeding
	Rooting: rooting with the snout or the hoof
Dynamic activities	Moving: walk, run or other movements
	Resting: stand, sit, lie or rest
Other activities	Other activities: drinking, bath, excreting or urinating, voice calls, rubbing
	Stereotypes and aggressive behaviour: bite, nibble, tail bite and stereotypes
Social interaction	In group: engaging with at least another group member
	Solitary: alone during feeding, moving, resting or other activities

Table 2. Effect of genotype, diurnal time slot and month on the pig’s behaviour (expressed as percentage of total observed behaviours).

	Feeding			Dynamic activities		Other activities	Social interactions
	Feeding	On grass	Rooting	Moving	Resting		into group
Genotype (G)
CS	69.5	56.9^b	12.5	10.5	19.0	1.1	66.5
LWxCS	74.0	66.1^a	7.9	6.5	16.6	2.9	69.7
Diurnal Time Slot (TS)
Morning	61.3^c	55.3^b	6.0	8.1	28.0^a	2.6	78.4^a
Midday	71.1^b	58.2^b	12.8	7.0	20.1^a	1.8	63.6^b
Afternoon	82.9^a	71.1^a	11.8	10.3	5.3^b	1.4	62.3^b
Month (M)
January	77.9^b	68.7^b	9.2^b	18.2^a	2.3^c	1.5^b	86.4^a
March	92.2^a	92.2^a	0.0^c	7.8^b	0.0^c	1.2^b	51.6^c
May	53.9^c	14.0^d	39.9^a	5.1^b	40.1^a	0.9^b	72.0^b
July	48.1^c	48.1^c	0.0^c	6.3^b	44.2^a	1.4^b	48.8^c
September	86.0^ab	86.0^a	0.0^c	2.5^b	6.9^c	4.6^a	71.1^ab
November	72.3^b	56.7^bc	15.6^b	11.0^ab	14.5^b	2.2^ab	78.9^ab
RSD	2.9	2.9	2.5	1.8	2.5	6.2	2.6
p-value
G	ns	*	ns	ns	ns	ns	ns
TS	**	**	ns	ns	**	ns	**
M	**	**	**	**	**	ns	**
GxTS	*	ns	**	ns	**	ns	ns
GxM	*	*	ns	ns	**	ns	**

CS: Cinta Senese; G: genotype; GxM: genotype x month; GxTS: genotype x diurnal time slot; LW x CS: Large White x Cinta Senese; M: month; RSD: residual standard deviation; Significance: *: p < .05; **: p < .01; ns: not significant; TS: diurnal time slot. Within criterion, means within factor with different letters are significantly different.

Table 3. Interaction between genotype and diurnal time slot on the pig’s behaviour (expressed as percentage of total observed behaviours).

Behaviour	Morning		Midday		Afternoon
	CS	LWxCS	CS	LWxCS	CS	LWxCS
Feeding	67.2	55.3	64.7^b	77.4^a	76.5	89.3
Rooting	16.5^a	0.0^b	9.1	16.5	12.0	11.7
Resting	20.1^B	35.8^A	27.2^a	12.9^b	9.5	1.1

CS: Cinta Senese; LW x CS: Cinta Senese x Large White; within criterion, means within diurnal time slot with different letters are significantly different; Significance: ^a,b: p < .05; ^A,B: p < .01.