METHIONINE PLUS CYSTINE TO LYSINE RATIO IN DIETS FOR TAMBAQUI JUVENILES

Souza, Flávio Oliveira; Bomfim, Marcos Antonio Delmondes; Ribeiro, Felipe Barbosa; Lanna, Eduardo Arruda Teixeira; Sousa, Thalles José Rêgo de; Costa, Dayana da Conceição da

doi:10.1590/1983-21252019v32n124rc

Flávio Oliveira Souza ^**Corresponding author: flaviosouza_bio@hotmail.com

Center for Agricultural and Environmental Sciences, Universidade Federal do Maranhão, Chapadinha, MA, Brazil; flaviosouza_bio@hotmail.com, madbomfim@yahoo.com.br, felipebribeiro@yahoo.com, talesrego@hotmail.com, dayanacosta10@gmail.com.

http://orcid.org/0000-0002-0162-7476

Marcos Antonio Delmondes Bomfim

Center for Agricultural and Environmental Sciences, Universidade Federal do Maranhão, Chapadinha, MA, Brazil; flaviosouza_bio@hotmail.com, madbomfim@yahoo.com.br, felipebribeiro@yahoo.com, talesrego@hotmail.com, dayanacosta10@gmail.com.

http://orcid.org/0000-0002-1707-2970

Felipe Barbosa Ribeiro

Center for Agricultural and Environmental Sciences, Universidade Federal do Maranhão, Chapadinha, MA, Brazil; flaviosouza_bio@hotmail.com, madbomfim@yahoo.com.br, felipebribeiro@yahoo.com, talesrego@hotmail.com, dayanacosta10@gmail.com.

http://orcid.org/0000-0002-2505-3964

Eduardo Arruda Teixeira Lanna

Center for Agricultural Sciences, Department of Animal Science, Universidade Federal de Viçosa, Viçosa, MG, Brazil; eduardoalanna@yahoo.com.br.

http://orcid.org/0000-0002-9138-012X

Thalles José Rêgo de Sousa

Center for Agricultural and Environmental Sciences, Universidade Federal do Maranhão, Chapadinha, MA, Brazil; flaviosouza_bio@hotmail.com, madbomfim@yahoo.com.br, felipebribeiro@yahoo.com, talesrego@hotmail.com, dayanacosta10@gmail.com.

http://orcid.org/0000-0003-0051-3722

Dayana da Conceição da Costa

Center for Agricultural and Environmental Sciences, Universidade Federal do Maranhão, Chapadinha, MA, Brazil; flaviosouza_bio@hotmail.com, madbomfim@yahoo.com.br, felipebribeiro@yahoo.com, talesrego@hotmail.com, dayanacosta10@gmail.com.

http://orcid.org/0000-0002-4922-9901

*Corresponding author: flaviosouza_bio@hotmail.com

Ingredients (%)	Methionine ratio plus cystine:lysine digestible (%)
	50	55	60	65	70	75
Soybean meal (45%)	50.08	50.08	50.08	50.08	50.08	50.08
Corn	30.16	30.16	30.16	30.16	30.16	30.16
Wheat bran	8.92	8.92	8.92	8.92	8.92	8.92
Corn starch	0.18	0.14	0.11	0.07	0.04	0.00
Soy oil	5.63	5.60	5.56	5.52	5.48	5.44
L - Lysine - HCl	0.19	0.19	0.19	0.19	0.19	0.19
DL - Methionine	0.000	0.07	0.15	0.22	0.30	0.37
L - Threonine	0.42	0.42	0.42	0.42	0.42	0.42
Dicalcium phosphate	3.36	3.36	3.36	3.36	3.36	3.36
Vitamin and mineral premix ¹	0.50	0.50	0.50	0.50	0.50	0.50
Vitamin C ²	0.05	0.05	0.05	0.05	0.05	0.05
Antioxidant (BHT)	0.02	0.02	0.02	0.02	0.02	0.02

Crude protein (%)	26.90	26.94	26.99	27.03	27.07	27.12
Digestible protein (%) ³	24.43	24.47	24.51	24.56	24.60	24.64
Digestible energy (kcal kg^-1) ³	3000.0	3000.0	3000.0	3000.0	3000.0	3000.0
Ether extract (%)	7.86	7.82	7.78	7.74	7.70	7.67
Crude fiber (%)	3.98	3.98	3.98	3.98	3.98	3.98
Total calcium (%)	0.96	0.96	0.96	0.96	0.96	0.96
Phosphorus available (%) ²	0.70	0.70	0.70	0.70	0.70	0.70
Total lysine (%)	1.67	1.67	1.67	1.67	1.67	1.67
Digestible lysine (%) ²	1.45	1.45	1.45	1.45	1.45	1.45
Total Met. + Cyst. (%)	0.79	0.87	0.94	1.01	1.09	1.16
Digestible Met. + Cyst. (%) ²	0.73	0.80	0.87	0.94	1.06	1.09
Digestible threonine (%) ²	1.32	1.32	1.32	1.32	1.32	1.32
Digestible tryptophan (%) ²	0.33	0.33	0.33	0.33	0.33	0.33
Ratio Met. + Cyst./Lysine Digest.	50.0	55.0	60.0	65.0	70.0	75.0

Methionine ratio plus cystine to lysine (%)	Variable
	FC	CDMC	WG	SGR	FC	PEG
	(g)	(mg)	(g)	(% day^-1)	(g g^-1)	(g g^-1)
50.0	9.19	66.65	6.91	4.57	3.59	1.98
55.0	8.25	65.77	6.86	4.70	2.59	2.20
60.0	10.13	88.16	8.99	5.59	1.97	2.58
65.0	8.62	81.15	9.06	5.92	1.30	2.30
70.0	9.86	100.11	8.02	5.11	2.70	2.25
75.0	8.92	97.01	8.05	5.03	2.35	2.38
P>F linear	1.000	0.001	0.184	0.121	0.075	0.150
P>F quadratic	1.000	1.000	0.110	0.006	0.007	0.118
CV (%)	13.24	17.00	22.64	12.40	38.64	14.21

Variable	Model	Equation	R²	Requeriment
SGR (% day^-1)	Quadratic	SGR = - 17.797 + 0.7256R - 0.0056R²	0.71	64.4
CDMC (mg)	Linear	MCDC = - 5.3675 + 1.4161R	0.81	-----
FC (g g^-1)	Quadratic	FC = 35.758 - 1.0486R + 0.0081R²	0.73	64.8

Methionine ratio plus cystine to lysine (%)	Variable
	BM	BF	BP	DBF	DBP	NRE
	(%)	(%)	(%)	(mg day^-1)	(mg day^-1)	(%)
50.0	79.42	1.32	15.84	3.69	24.20	30.91
55.0	78.56	1.24	16.65	3.35	24.24	35.07
60.0	79.01	1.28	16.47	4.10	31.40	40.76
65.0	82.72	1.09	16.52	3.47	29.57	37.60
70.0	79.78	1.05	15.40	2.98	27.41	34.04
75.0	79.55	1.12	15.70	3.58	28.43	36.75
P>F linear	0.219	0.028	0.225	1.000	0.198	0.272
P>F quadratic	0.200	1.000	0.112	1.000	0.187	0.060
CV (%)	1.13	16.95	5.77	37.60	21.08	15.21

Variable	Model	Equation	R²	Requeriment
BF (%)	Linear	BF = 1.8187 - 0.0101R	0.73	-----

S R G (% {d a y}^{- 1}) = \frac{[(N a t u r a l l o g a r i t h m o f f i n a l w e i g h t (g) - n a t u r a l l o g a r i t h m o f i n i t i a l w e i g h t (g)) x 100]}{E x p e r i m e n t a l p e r i o d (d a y s)}

C D M C (m g) = \frac{{[(% F i n a l b o d y p r o t e i n, % x f i n a l w e i g h t, m g) - (i n i t i a l b o d y p r o t e i n, % x i n i t i a l w e i g h t, m g)] / 100}}{E x p e r i m e n t a l p e r i o d (d a y s)}

B P D (m g {d a y}^{- 1}) = \frac{\{[(% F i n a l b o d y p r o t e i n, % x f i n a l w e i g h t, m g) - (i n i t i a l b o d y p r o t e i n)]}{E x p e r i m e n t a l p e r i o d (d a y s)}

B F D (m g {d a y}^{- 1}) = \frac{\{[(F i n a l b o d y f a t, % x f i n a l w e i g h t, m g) - (i n i t i a l b o d y f a t, % x i n i t i a l w e i g h t, m g)] / 100\}}{E x p e r i m e n t a l p e r i o d (d a y s)}

N R E (%) = \frac{\{[F i n a l b o d y N (%) x f i n a l w e i g h t (g)] - [I n i t i a l b o d y N (%) x i n i t i a l w e i g h t (g)] x 100\}}{[(F e e d c o n s u m p t i o n, g) x (% c r u d e p r o t e i n o f t h e r a t i o n / 6.25)]}

[1] *Corresponding author: flaviosouza_bio@hotmail.com

Brasil

Brasil

METHIONINE PLUS CYSTINE TO LYSINE RATIO IN DIETS FOR TAMBAQUI JUVENILES¹ 1 Extracted from the first author's Master's dissertation.

RELAÇÃO DA METIONINA MAIS CISTINA COM A LISINA EM RAÇÕES PARA JUVENIS DE TAMBAQUI

ABSTRACT

Brasil

Brasil

METHIONINE PLUS CYSTINE TO LYSINE RATIO IN DIETS FOR TAMBAQUI JUVENILES1 1 Extracted from the first author's Master's dissertation.

RELAÇÃO DA METIONINA MAIS CISTINA COM A LISINA EM RAÇÕES PARA JUVENIS DE TAMBAQUI

ABSTRACT

METHIONINE PLUS CYSTINE TO LYSINE RATIO IN DIETS FOR TAMBAQUI JUVENILES¹ 1 Extracted from the first author's Master's dissertation.