Effects of dietary menthol-rich bioactive lipid compounds on zootechnical traits, blood variables and gastrointestinal function in growing sheep

Table 7 Effect of two doses of dietary menthol-rich PBLC on ruminal and jejunal short-circuit current [I_sc; μEq/(cm² · h)], conductance (G_t; mS/cm²) and uptakes [pmol/(cm² · min)] of glucose (U_gluc) and methionine (U_met) in the presence (+ Na⁺) or absence of Na⁺ (− Na⁺)

Attribute	Treatment^a,b			SEM	Contrast^c
Attribute	Control	PBLC-L	PBLC-H		1	2	3
Rumen
I_sc (+ Na⁺)	10.8	21.8**	20.6**	1.46	< 0.001	0.004	< 0.001
G_t (+ Na⁺)	3.38	3.62*	4.40**	0.26	0.013	0.41	0.065
U_gluc (+ Na⁺)	237	251	274	36.6	0.48	0.92	0.57
U_gluc (− Na⁺)	203	194	255*	17.5	0.053	0.12	0.33
U_met (+ Na⁺)	56.2	60.8	71.2	11.3	0.36	0.84	0.49
U_met (− Na⁺)	50.3	45.7	67.9*	5.48	0.036	0.061	0.35
Jejunum
I_sc (+ Na⁺)	5.27	9.40	9.91^#	1.81	0.085	0.43	0.063
G_t (+ Na⁺)	28.9	26.6	27.7	1.96	0.66	0.49	0.47
U_gluc (+ Na⁺)	1239	1465	1145	151	0.66	0.16	0.73
U_gluc (− Na⁺)	842	893	746	127	0.60	0.53	0.89
U_met (+ Na⁺)	715	817	603	94.0	0.40	0.18	0.97
U_met (− Na⁺)	376	463	365	55.3	0.89	0.19	0.59

SEM standard error of mean
^aControl: without PBLC; PBLC-L: lower dose (80 mg/d) of PBLC; and PBLC-H: higher dose (160 mg/d) of PBLC
^bOne animal in each treatment was removed due to high conductivity
^cContrast: 1 = linear effect; 2 = quadratic effect; and 3 = Control versus both PBLC groups
^#/*^/**Mean values differ compared with the control at P < 0.10/0.05/0.01

ISSN: 2049-1891