View Full Table | Close Full ViewTable 1.

Nutritive value of cool-season grass hay and ration balancer fed to overweight adult horses

 
Nutrient1 Hay Ration balancer2
DM, % 92 89
CP, % DM 12 39
ADF, % DM 38 9
NDF, % DM 63 18
Starch, % DM 1 5
WSC, % DM 11 10
ESC, % DM 6 8
Ca, % DM 0.47 2.10
P, % DM 0.31 1.09
Equine DE, Mcal/kg 2.0 1.5
1WSC, water-soluble carbohydrates; ESC, ethanol-soluble carbohydrates.
2ProAdvantage Grass Balancer, Progressive Nutrition, Brookville, OH.



View Full Table | Close Full ViewTable 2.

Morphometric measurements and ultrasound values (±SE) of horses fed a limit-fed diet from either the stall floor (FLOOR) or a slow-feed hay net (NET) on d 0 and 28

 
Day BW, kg BCS1 Neck circ.,2 cm Girth circ.,2 cm Cresty neck score3 Rump fat, cm Extractable fat,4 % LD thickness,5 cm LD depth,5 cm
Floor 0 569a 7 39 76 1.5 1.6 13 0.61a 4.0
28 537b 7 40 76 1.5 1.8 14 0.51a 3.8
Net 0 561a 7 41 76 2.3 2.3 16 1.44a 4.0
28 521b 7 41 75 2.0 1.7 13 0.44b 4.0
SEM 18 0.4 0.8 0.5 0.4 0.3 0.05 0.2
a,bMeans without a common superscript within a column differ (P ≤ 0.05).
1Body condition score was assessed on a scale of 1 to 9 (Henneke et al., 1983).
2Circ.: Circumference.
3Cresty neck score was assessed on a scale of 0 to 5 (Carter et al., 2009).
4Extractabel fat was estimated on the basis of an equation by Westervelt et al. (1976).
5LD: longissimus dorsi.



View Full Table | Close Full ViewTable 3.

Average (Avg) values, area under the curve (AUC), peak, and time to peak (TTP) in minutes for blood glucose, insulin, and cortisol and average leptin values for overweight adult horses fed a limit-fed diet at 0700 h (am) and 1600 h (pm) from either the stall floor (FLOOR) or a slow-feed hay net (NET) on d 0 and 28

 
FLOOR
NET
d 0 d 28 d 0 d 28 P-value
Item am feeding pm feeding am feeding pm feeding am feeding pm feeding am feeding pm feeding Treatment Day
Glucose
    Avg, mg/dL 106y 108 y 120x 113 x 105 y 100 y 115 x 116 x 0.4695 <0.0001
    AUC 4506 6644 5064 7246 4397 5948 4857 6939 0.5552 0.2430
    Peak, mg/dL 120 136 143 124 117 111 128 129 0.16 0.28
    TTP 112 97 187 135 172 112 217 82 0.67 0.08
Insulin
    Avg, IU 12.1y 13.0y 20.6x 10.0x 12.3y 12.7y 18.1x 9.2x 0.8229 0.0218
    AUC 514 785 911 579 500 709 733 506 0.6548 0.3832
    Peak, IU 15y 16y 44x 16x 18y 18y 34x 15x 0.82 0.0277
    TTP 120a 90a 187a 120a 112b 97b 106b 67b 0.037 0.330
Cortisol
    Avg, μg/dL 6.1x 6.7x 5.1y 3.7,y 3.0x 2.6x 2.9y 2.5y 0.0642 0.0002
    AUC 260x 387,x 198,y 217,y 123x 156x 115y 140,y 0.0684 0.0102
    Peak, μg/dL 5.8a 3.3a 8.2a 5.0a 4.3b 3.1b 4.4b 3.9b 0.0207 0.0679
    TTP 82 97 67 142 120 97 112 67 0.9568 0.9389
Leptin
    Avg, ng/mL 2.52x 2.23x 0.85y 1.56y 4.15x 3.82x 1.79y 2.26y 0.4545 <0.0001
a,bWithin a row, means without a common superscript differ by treatment (P ≥ 0.05).
x,yWithin a row, means without a common superscript differ by period (P ≥ 0.05).