Table 3. Influence of crating density and weather on respiratory frequency of broilers during transportation

Crating density¹⁾	Weather²⁾	Respiratory frequency (count/min)
Low	Low	66.25^a
Medium		64.00^a
High		64.50^a
Low	High	158.00^b
Medium		162.25^bc
High		178.50^c
SEM		1.515
Main effect
Crating density
Low		112.13^a
Medium		113.13^a
High		121.50^b
SEM		2.624
Weather
Low		64.92
High		166.25
SEM		2.142
p-value
Crating density		0.041
Weather		< 0.001
Crating density × weather		0.022

Low, 20 birds/crate (0.039 m²/bird); Medium, 25 birds/crate (0.031 m²/bird); High, 30 birds/crate (0.026 m²/bird).
Low, low air temperature (−1°C); High, high air temperature (30°C).
Values with different superscripts in the same row were significantly different (p < 0.05).