TABLE 1.

Basic conditions of pigs that were sampled

Piga	Diet	Sample analyzedh
		Ileum	Cecum	Colon
SPF-Ab	Standardf	√	√	√
SPF-Bb	Standard		√	√
SPF-Cb	Standard		√	√
Organicc	Standard	√	√	√
s-962d	Standard, no Tylosin	√	√	√
s-959d	Standard, 60 ppm Tylosin	√	√	√
A-65	Standard			√
A-42	Standard	√
G-55	Standard, 2% lactic acid			√
G-23	Standard, 2% lactic acid	√	√	√
SwA	Standard	√	√	√
F-9	Fermented standard feed	√	√	√
B-18	CPg		√	√
E-24	CP, 12% sugar beet pulp			√
6C	CP, 10% potato starch			√
2W-a,be	Sow's milk	√	√	√
4W-a,be	Sow's milk and dry feed	√i	√	√
6W-a,be	Standard	√	√	√
28-Fa	Standard, 1.8% formic acid			√
29-stf	Standard, fine			√
30-stc	Standard, coarse			√

^aUnless otherwise stated, the pigs originated from experimental studies at the Danish Veterinary Laboratory and were 12 to 16 weeks of age.

^bSPF-A, SPF-B, and SPF-C were bought from a specific pathogen-free high-health, commercial herd.

^cOrganically reared pig.

^dExperimentally challenged with Salmonella enterica serovar Typhimurium, with or without Tylosin as a growth promoter.

^e2W-a,b, 4W-a,b, and 6W-a,b were six animals bought from a commercial herd and were 2, 4, and 6 weeks old, respectively.

^fStandard feed based on wheat, barley, soybeans, and fish meal, without antibiotic growth promoters.

^gCP, cooked rice and animal protein.

^hMarked samples were analyzed.

ⁱThe ileal sample from pig 4-Wb was not analyzed.