The use of feed-grade amino acids in lactating sow diets

Table 6 Evaluation of L-lysine HCl on sow and litter performance for Exp. 2

	Diet^a
	1	2	3	4	5	SEM	Trt^b	Parity	Trt × Parity	Linear	0.40 vs. 0.40 + Val
Sow
Sample size, n	97	93	98	96	95
Estimated SID Lys, g/d	57.5	57.0	57.3	57.0	56.7
ADFI, kg	5.13	5.09	5.12	5.09	5.06	0.03	0.60	<0.01	0.07	0.71	0.50
Weight change, %	−4.57	−4.66	−4.09	−5.12	−5.29	0.88	0.87	<0.01	0.47	0.84	0.89
Bred by 10 d, %	96.77	95.24	95.06	94.36	99.07	1.99	0.44	<0.01	0.33	0.40	0.09
Wean-to-estrus interval, d	5.25	5.61	5.59	5.69	5.10	0.26	0.37	<0.01	0.24	0.26	0.10
Subsequent total born, n	13.70	13.56	13.49	13.84	13.51	0.38	0.96	0.14	0.70	0.86	0.54
Litter
Number of pigs started/sow, n	11.95	11.91	12.05	12.09	11.90	0.11	0.57	0.07	0.25	0.19	0.18
Number of pigs weaned/sow, n	10.96	11.15	11.21	11.01	10.97	0.14	0.58	0.01	0.28	0.71	0.85
Starting litter weight, kg	21.33	21.96	21.88	22.39	22.40	0.47	0.43	0.13	0.96	0.15	0.99
Weaning litter weight, kg	71.17	73.07	71.65	72.66	71.60	1.18	0.75	<0.01	0.16	0.66	0.51
Piglet ADG, kg	0.241	0.240	0.233	0.234	0.235	0.004	0.59	<0.01	0.03	0.38	0.49
Litter ADG, kg	2.68	2.73	2.67	2.70	2.64	0.05	0.74	<0.01	0.03	0.86	0.40
Pre-wean mortality/morbidity, %	9.33	6.13	8.07	8.15	9.41	1.01	0.14	0.31	0.25	0.90	0.37

^aDietary treatments were as follows: 1 – 0.10, 2 – 0.20, 3 – 0.30, 4 – 0.40% L-lysine HCl, 5 – 0.40% L-lysine HCl inclusion + feed grade valine
^bDietary treatment

ISSN: 2049-1891