Are the energy matrix values of the different feed additives in broiler chicken diets could be summed?

BMC Veterinary Research

Table 2 The effect of dietary supplementation of NSP-degrading enzymes, LYSOFORTE^®, CreAMINO^® and their combination on the weight of carcass traits relative to the live body weight (%):

Parameter		T2	T3	T4	T5	T6	T7	SEM	P-value
Carcass weight	91.69	90.73	94.38	89.97	86.99	93.25	88.49	0.87	0.27
Breast meat	28.29	24.47	26.08	25.39	28.80	27.76	27.19	0.42	0.22
Thighs	9.70	9.66	9.41	10.17	9.24	9.52	9.84	0.19	0.97
Drumstick	9.71	10.64	9.89	11.84	10.83	10.35	13.79	0.41	0.18
Liver	2.29	1.95	2.09	2.60	1.79	2.64	2.34	0.11	0.52
Gizzard	1.59	1.54	1.72	1.79	0.89	1.83	1.56	0.12	0.67
Proventriculus	0.36	0.26	0.33	0.36	0.32	0.33	0.28	0.01	0.23
Abdominal Fat	1.82	1.60	1.39	1.16	1.62	2.04	1.47	0.09	0.39

^a,b,c Means within the same row carrying different superscripts are significantly different at (P < 0.05).
T1: Control group "basal diet with no additives (breeder recommendation (BR)). T2: Basal diet minus 100 kcal/kg supplemented with 0.02% NSP-degrading enzymes (NSP). T3: Basal diet minus 50 kcal/kg supplemented with 0.025% emulsifier (LYSOFORTE^®). T4: Basal diet minus 50 kcal/kg supplemented with 0.06% guanidinoacetic acid (CreAMINO^®). T5: Basal diet minus 150 kcal/kg supplemented with a mixture of NSP and LYSOFORTE^® (NSPL), T6: Basal diet minus 100 kcal/kg supplemented with a mixture of NSP and CreAMINO^® (NSPC). T7: Basal diet minus 200 kcal/kg supplemented with a mixture of NSP, LYSO, and CreAMINO^® (NSPLC).

ISSN: 1746-6148