Table 5.

Chemical analysis of fish meal¹, experiment 3 (as-fed basis)

Item	0.87% soluble fish meal	24.35% soluble fish meal
Proximate analysis, %2
Dry matter	92.60	93.01
Crude protein	66.05	63.25
Ca	7.07	5.17
P	3.30	2.61
Ether extract	6.95	10.61
Ash	19.23	19.11
Total volatile N3	0.07	0.06
Pepsin digestibility3	94.37	93.29
Modified Torry digestibility3	86.4	92.4
Total amino acids, %4
Arg	4.16	3.69
Cys	0.60	0.48
His	1.62	1.51
Ile	2.96	2.52
Leu	4.96	4.28
Lys	5.53	4.82
Met	1.95	1.68
Thr	2.78	2.40
Trp	0.76	0.61
Tyr	2.29	1.79
Val	3.50	3.09
Biogenic amines concentrations3
Group 15
Tyramine	6	130
Putrescine	11	135
Cadaverine	38	508
Histamine	4	134
Agmatine	28	181
Spermidine	24	42
Spermine	4	21
Group 25
Tyramine	16	129
Putrescine	16	133
Cadaverine	52	483
Histamine	2	103
Agmatine	33	170
Spermidine	36	48
Spermine	21	14

¹LT Prime Menhaden Fishmeal (Daybrook Fisheries Inc., New Orleans, LA). Samples of fish meal were obtained at the mill during diet manufacturing and composited.

²Ward Laboratories, Inc., (Kearney, NE).

³New Jersey Feed Laboratory (Trenton, NJ).

⁴University of Missouri Agriculture Experiment Station Chemical Laboratories (Columbia, MO).

⁵Group 2 pigs were placed on test 5 mo after group 1, thus, biogenic amines were tested on the same batch of fish meal to monitor the stability of the product over a 5-mo storage period in 25 kg bags located in an unregulated environment subject to fluctuations in temperature and humidity.