Table 1.

Effect of different stocking densities on the blood lipid profiles and levels of glucose, AST, and ALT in meat ducks exposed to heat stress.

	Treatment groups
Items${}^{\mathrm{1}}$	CON	LSD	MSD	HSD
TC (mg dL${}^{-\mathrm{1}}$)	$\mathrm{250.1}\pm {\mathrm{6.35}}^{\mathrm{2},\mathrm{c}}$	$\mathrm{314.8}\pm {\mathrm{7.51}}^{\mathrm{2},\mathrm{b}}$	$\mathrm{316.5}\pm {\mathrm{2.54}}^{\mathrm{b}}$	$\mathrm{348.9}\pm {\mathrm{1.85}}^{\mathrm{a}}$
HDL-C (mg dL${}^{-\mathrm{1}}$)	$\mathrm{81.07}\pm {\mathrm{2.11}}^{\mathrm{a}}$	$\mathrm{76.07}\pm {\mathrm{1.30}}^{\mathrm{a}}$	$\mathrm{80.50}\pm {\mathrm{0.99}}^{\mathrm{a}}$	$\mathrm{53.51}\pm {\mathrm{1.64}}^{\mathrm{b}}$
TAG (mg dL${}^{-\mathrm{1}}$)	$\mathrm{167.5}\pm {\mathrm{3.27}}^{\mathrm{c}}$	$\mathrm{185.9}\pm {\mathrm{2.70}}^{\mathrm{b}}$	$\mathrm{187.2}\pm {\mathrm{3.42}}^{\mathrm{b}}$	$\mathrm{205.9}\pm {\mathrm{2.83}}^{\mathrm{a}}$
LDL-C (mg dL${}^{-\mathrm{1}}$)	155.3${}^{\mathrm{b}}$ $\pm$ 3.54${}^{\mathrm{c}}$	179.6 $\pm$ 2.24${}^{\mathrm{b}}$	176.5 $\pm$ 2.20${}^{\mathrm{b}}$	206.0 $\pm$ 3.46${}^{\mathrm{a}}$
Glucose (mg dL${}^{-\mathrm{1}}$)	186.0 $\pm$ 3.55${}^{\mathrm{a}}$	166.0 $\pm$ 3.20${}^{\mathrm{a}}$	151.1 $\pm$ 2.05${}^{\mathrm{b}}$	153.0 $\pm$ 2.03${}^{\mathrm{b}}$
AST (IU L${}^{-\mathrm{1}}$)	52.05 $\pm$ 4.13${}^{\mathrm{c}}$	61.22 $\pm$ 1.35${}^{\mathrm{b}}$	60.99 $\pm$ 1.08${}^{\mathrm{b}}$	75.71 $\pm$ 1.42${}^{\mathrm{a}}$
ALT (IU L${}^{-\mathrm{1}}$)	50.17 $\pm$ 2.01${}^{\mathrm{c}}$	56.56 $\pm$ 0.73${}^{\mathrm{b}}$	55.59 $\pm$ 1.07${}^{\mathrm{b}}$	66.04 $\pm$ 1.28${}^{\mathrm{a}}$

${}^{\mathrm{1}}$ TC represents total cholesterol, HDL-C represents high-density lipoprotein cholesterol, TAG represents triacylglycerol, LDL-C represents low-density lipoprotein cholesterol, AST represents aspartate aminotransferase, and ALT represents alanine transferase. ${}^{\mathrm{2}}$ Mean values $\pm$ standard errors ($n=\mathrm{15}$). ${}^{\mathrm{a},\mathrm{b},\mathrm{c}}$ represent significant differences among the treatment groups at a confidence level of 95 % ($P\mathit{<}\mathrm{0.05}$).