Table 1. Clinical signs of PTB in Pelibuey rams infected naturally.

Ram identification	Clinical signs
	Cachexia	Thick feces	Diarrhea	Emaciation
1	+	+	+	+
2	+	+	+	+
3	-	-	-	+
4	-	-	-	+
5	+	+	-	+
6	-	+	-	+
7	-	+	-	+
N	-	-	-	-

¨N¨ ram used as negative control, ¨+¨ positive observation, ¨-¨ negative observation, during the assessment of clinical signs of PTB.