Arkansas - Agricultural Communication Services - University of ...

Arkansas Animal Science Department Report 2001
Table 1. Growth and physiological variables for steers grazing endophyte-infected (E+),
novel-endophyte (HiMag 4, HiMag 9), or endophyte-free (E-) tall fescue for the Fayetteville, AR location.
Variety of tall fescue
Item E+ HiMag 4 HiMag 9 E- SE
ADG, lb .93 a 1.43 b 1.36 b 1.61 b 0.05
Respiration rate, breaths/min 91.3 a 59.8 b 62.3 b 63.3 b 3.84
Rectal temperature, °F 105.3 a 103.6 b 103.8 b 103.5 b 0.2
Serum prolactin, ng/ml 42.48 a 146.82 b 165.32 b 152.46 b 31.21
a,b Within a row, means without a common superscript letter differ (P < 0.05). Data are presented as least-squares means ±
standard error. These figures represent the overall means of each variable for both years of the combined study.
Table 2. Growth and physiological variables for steers grazing endophyte-infected (E+),
novel-endophyte (HiMag 4), or endophyte-free (E-) tall fescue for the Mount Vernon, MO location.
Variety of tall fescue
Item E+ HiMag 4 E- SE
ADG, lb 0.55 a 1.21 b 1.21 b 0.07
Mean hair score, 1-5d 3.96 a 2.46 b 2.13 b 0.15
Respiration rate, breaths/min 122.8 a 103.6 b 93.2 b 3.76
Rectal temperature, °F 106.3 a 104.9 b 104.3 c 0.24
Serum prolactin, ng/ml 16.46 a 154.63 b 108.27 b 21.82
a,b,c Within a row, means without a common superscript letter differ (P < 0.05). Data are presented as least-squares means ±
standard error. These figures represent the overall means of each variable for both years of the combined study.
d Hair scores based on the following system: 1 = slick, short-hair; 2 = some medium length hair; 3 = medium length hair over
most of the body; 4 = medium hair plus some rough, long, dead hair; 5 = primarily rough, long and dead hair.
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