Table 7. Proportion of pigs (based on pen averages) with tail wounds (score > 2) and ear wounds (score > 3) observed for each treatment group: low and high sanitary condition pigs both with diets containing either low or normal protein levels and basal or supplemented amino acid profiles.

	LSC1				HSC1
	LP2		NP2		LP		NP		P-values4
Wound score5	AA-B3	AA-S3	AA-B	AA-S	AA-B	AA-S	AA-B	AA-S	SC	CP	AA	batch	SC×AA	SC×CP
n6	8	8	8	8	8	8	8	8
Tail
start	0.08 ± 0.03	0.07 ± 0.03	0.11 ± 0.04	0.16 ± 0.05	0.07 ± 0.04	0.13 ± 0.05	0.13 ± 0.04	0.10 ± 0.03	0.10	0.17	0.50	0.43	0.99	0.38
grower	0.15 ± 0.04	0.04 ± 0.02	0.22 ± 0.06	0.10 ± 0.03	0.18 ± 0.06	0.21 ± 0.06	0.27 ± 0.08	0.22 ± 0.05	0.007	0.10	0.09	0.0003	0.14	0.80
finish	0.18 ± 0.03	0.15 ± 0.04	0.25 ± 0.05	0.23 ± 0.06	0.18 ± 0.06	0.26 ± 0.04	0.17 ± 0.06	0.12 ± 0.06	0.82	0.94	0.84	0.77	0.56	0.04
Ear
start	0.05 ± 0.03	0.04 ± 0.04	0.00 ± 0	0.06 ± 0.03	0.06 ± 0.03	0.01 ± 0.01	0.00 ± 0	0.00 ± 0
grower	0.05 ± 0.05	0.00 ± 0	0.00 ± 0	0.05 ± 0.03	0.17 ± 0.08	0.07 ± 0.03	0.00 ± 0	0.00 ± 0
finish	0.06 ± 0.06	0.02 ± 0.02	0.00 ± 0	0.08 ± 0.04	0.08 ± 0.04	0.05 ± 0.02	0.00 ± 0	0.00 ± 0

¹LSC = low sanitary conditions, HSC = high sanitary conditions.

²LP = low crude protein level in diet, NP = normal crude protein level in diet.

³AA-B = basal dietary amino acid profile, AA-S = supplemented dietary amino acid profile containing 20% more Met, Thr, and Trp than the basal profile.

⁴ Significant P-values are indicated in bold and for a tendency values are underlined. Means are presented as raw means ± standard error of the mean. For ear wounds no statistically test was done, as there were too many pens without wounds.

⁵Wound scores were either 0 = no wound or 1 = wound and were averaged per pen.

⁶n = number of pens, a pen contained nine pigs.