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

Table 5 Evaluation of L-lysine HCl on gilt and litter performance for Exp. 1

	Diet^a
	1	2	3	4	5	SEM	Trt^b	Linear	Quadratic
Gilt
Sample size, n	46	49	47	47	46
Estimated SID Lys, g/d	62.9	64.1	64.3	62.6	66.7
ADFI, kg	5.88	5.99	6.01	5.85	6.23	0.14	0.33	0.20	0.50
Weight change, %	1.09	1.94	−0.28	2.62	2.67	1.05	0.24	0.23	0.35
Bred by 10 d, %	97.22	97.50	100.00	97.14	97.62	2.47	0.92	0.95	0.58
Wean-to-estrus interval, d	5.56	5.73	5.00	5.66	5.55	0.32	0.51	0.93	0.48
Subsequent total born, n	11.83	12.41	11.66	12.25	11.16	0.59	0.44	0.37	0.33
Litter
Number of pigs started/sow, n	9.98	9.88	9.85	10.02	10.11	0.11	0.42	0.24	0.16
Number of pigs weaned/sow, n	9.67	9.47	9.51	9.64	9.87	0.13	0.22	0.18	0.05
Starting litter weight, kg	15.90	15.93	16.12	15.95	16.17	0.26	0.92	0.49	0.98
Weaning litter weight, kg	58.92	58.19	60.14	58.03	61.92	1.54	0.35	0.23	0.37
Piglet ADG, kg	0.257	0.260	0.271	0.250	0.268	0.06	0.10	0.52	0.91
Litter ADG, kg	2.51	2.49	2.59	2.43	2.65	0.06	0.13	0.27	0.39
Pre-wean mortality/morbidity, %	3.08	4.03	3.35	3.83	2.36	0.88	0.68	0.55	0.26

^aDietary treatments were as follows: 1 – 0.00, 2 – 0.075, 3 – 0.150, 4 – 0.225, 5 – 0.300% L-lysine HCl inclusion
^bDietary treatment

ISSN: 2049-1891