. 2017 Aug 25;55(1):28–37. doi: 10.2141/jpsa.0170087

Table 4. Effect of replacing methionine with different levels of betaine and choline (mg/kg) on organ weight and total lipid content of the liver in broiler chicks (Trial 1).

	Treatments
Parameter	Control	Control+	280Chol	560Chol	320Bet	640Bet	SEM	P-value
Feathers removed^*	92.8	93.9	93.7	93.2	93.4	93.4	0.19	0.6742
Carcass	69.1	71.1	70.8	69.7	69.8	70.4	0.30	0.3687
Breast	23.7	25.0	24.3	24.9	23.8	23.9	0.26	0.5569
Thigh + drumstick	20.5^a	19.8^ab	19.2^b	19.7^ab	19.7^ab	20.6^a	0.14	0.0283
Back	24.6	23.4	24.2	23.8	23.7	24.9	0.19	0.1182
Digestive system	13.2	12.6	13.6	13.4	13.6	12.7	0.15	0.2172
Gizzard	3.09	3.05	3.13	3.02	3.08	2.79	0.057	0.6241
Proventriculus	0.46^b	0.45^b	0.52^ab	0.47^b	0.51^ab	0.55^a	0.010	0.0171
Liver	2.57^b	2.68^ab	2.94^a	2.96^a	2.52^b	2.40^b	0.050	0.0023
Spleen	0.14	0.12	0.11	0.14	0.11	0.13	0.005	0.3844
Heart	0.53	0.48	0.53	0.50	0.51	0.55	0.009	0.2736
Bursa Fabricius	0.11	0.09	0.11	0.11	0.09	0.11	0.006	0.5468
Total lipid content of liver (%)	26.5^ab	24.5^ab	33.1^a	25.0^ab	22.7^b	18.7^b	1.13	0.0176

Relative weight to live body weight for feathers removed, and carcass weight and relative weight to carcass weight for others; Chol, choline; Bet, betaine.

^a–c Mean values within a row with different superscripts differ significantly (P<0.05). Values represent 4 replicates of 2 birds per replicate for each treatment.