A Quantitative Study on the Trachea of the Red Sokoto (Maradi) Goat (Capra hircus)

Table 3

The diameter of the tracheal parts in the Red Sokoto goat.

Length (mm)	Animal number (𝑛=9)									Mean ± SEM	CSA
	1	2	3	4	5	6	7	8	9
CVR
ID	13	16	13.5	16	13	15	13	14	13	14.05 ± 0.4	176.6 ± 0.1
OD	15	17	15	18	15	18	15	15	16	16.0 ± 0.44*
ITR
ID	17	15	16	16.5	16	18	17	16	15	16.28 ± 0.28	221.5 ± 0.2
OD	13	17	18	18.5	18	18.5	18	17	18	17.39 ± 0.58

CVR: cervical region, ITR: intrathoracic region, ID: inner diameter, OD: outer diameter, n: sample size, and SEM: standard error of mean; CSA: cross-sectional area; *P < 0.05.