Arkansas - Agricultural Communication Services - University of ...

AAES Research Series 488
Table 1. Ingredient composition of supplements (%, DM basis).
Ingredient Corn Corn + oil Wheat midds Wheat midds + oil
Corn 47 43.25 29 23
Wheat midds - - 60.5 65.75
Cane molasses 2 2 2 2
Cottonseed hulls 27 29 - -
Soybean meal 21 21.5 3.5 3.25
Dicalcium phosphate 0.25 0.26 - -
Limestone 1.5 1.5 3.5 3.5
Salt 1 1 1 1
Fish oil - 1.5 - 1.5
Vitamin premix 1 + + + +
Trace mineral premix 2 + + + +
1 Premix supplied per lb of diet: 224.5 IU of vitamin A, 74.8 IU of vitamin D 3 , and 0.075 IU vitamin E.
2 Premix supplied: 20 ppm of Zn as ZnO, 8 ppm of Cu as CuSO 4 , 0.10 ppm of Se as Na 2 SeO 3 , and 0.10 ppm of Co as CoCO 3 .
Table 2. Effect of fish oil supplementation on performance of cattle grazing
mixed grass pastures.
Item Corn Corn + oil Wheat midds Wheat midds + oil SE
ADG, lb
d 1 to 14 1 4.0 3.3 3.7 3.3 0.14
d 15 to 28 3.0 3.4 3.4 3.1 0.27
d 29 to 42 2 4.1 a 2.8 b 2.9 ab 3.2 a 0.29
d 43 to 56 1.5 1.3 1.4 1.3 0.31
d 57 to 78 1 2.8 2.6 2.8 2.7 0.08
d 1 to 78 2 3.0 a 2.6 c 2.8 b 2.7b c 0.05
1 Effect of fish oil addition (P < 0.01).
2 Base-supplement X fish oil interaction (P < 0.01).
abc Within a row, means without a common superscript letter differ (P < 0.05).
Table 3. Effect of fish oil supplementation on lymphocyte blastogenic
response (1000 X cpm).
Mitogen Corn Corn + oil Wheat midds Wheat midds + oil SE
Unstimulated 2.4 3.5 4.7 2.4 1.1
CONA 1 , 25 mg/mL 63 ab 88 a 80 b 76 b 4.6
PHA 2 , 40 mg/mL 66 79 60 64 6.0
PWM 3 , 15 mg/mL 55 63 51 53 5.3
1 Concanavalin A (base-supplement x fish oil interaction, P < 0.01).
2 Phytohaemagglutinin (fish oil supplementation effect, P = 0.09; and base-supplement effect, P = 0.05).
3 Pokeweed mitogen (fish oil supplementation effect, P = 0.04; and base-supplement effect, P < 0.01).
ab Within a row, means without a common superscript letter differ (P < 0.05).
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