TABLE 2.

Performance and feeding behavior traits of lambs according to the diet/period test.

		CAF period (N = 78)		FAF period (N = 62)
		Mean	SD	Mean	SD	P-value
	Performance traits
	ADFI (g)	1,971	272	1,656	339	***
	ADG (g/j)	402	64	113	140	***
	eBW (kg)	52.6	6.5	58.6	13.6	***
	BFT (mm)	7.29	0.90	Not measured		–
	MD (cm)	2.73	0.18	Not measured		–
	RFI	−4.70	126.56	Not measured		–
	Feeding behavior traits
At visit level	FI/V (g)	161	47	148	73	NS
	FD/V (min)	4.1	1.5	16.0	8.3	***
	FR (g/min)	41.1	12.2	9.6	2.1	***
At day level	FI/D (g)	2,128	351	1,693	343	***
	FD/D (min)	54.9	14.2	181.0	37.2	***
	NV/D	14.4	5.1	15.2	9.8	NS

78 lambs received during a first period a 100% concentrates diet (CAF) and then in a second period 62 of them were kept to a 67% hay diet (FAF).ADFI, average daily feed intake; ADG, average daily gain; eBW, bodyweight at the end; BFT, backfat thickness; MD, muscle depth; RFI, residual feed intake; FI/V and FI/D, feed intake at visit and day levels, respectively; FD/V and FD/D, feeding duration at visit and day levels, respectively; FR, feeding rate; NV/D, number of visits per day.

***P < 0.001; NS, non-significant.