TY  - JOUR
T1  - Supplementing Corn or Soybean Hulls to Cattle Fed Bermudagrass Hay I: Intake, Apparent Digestion and Utilization
AU - , A.I. Orr AU - , V.T. Nguyen AU - , A. Webb AU - , D.G. St. Louis AU - , B.J. Rude 
JO  - Journal of Animal and Veterinary Advances
VL  - 6
IS  - 11
SP  - 1343
EP  - 1350
PY  - 2007
DA  - 2001/08/19
SN  - 1680-5593
DO  - javaa.2007.1343.1350
UR  - https://makhillpublications.co/view-article.php?doi=javaa.2007.1343.1350
KW  - Beef cattle
KW  -bermudagrass hay
KW  -supplementation
KW  -digestibility
KW  -balance
KW  -soybean hulls
KW  -corn
AB  - During balance trial, 12 steers received hay with: no supplement (HAY<SUB>B</SUB>); corn 0.445% body weight (BW; CORN<SUB>B</SUB>); or SBH 1.16% BW (HULLS<SUB>B</SUB>). Hay Dry Matter Intake (DMI) was not different (p  = .68; between 1.15 and 1.32%). Total DMI was greater (p< .01) for steers fed HULLS<SUB>B</SUB> (2.37%) than HAY<SUB>B</SUB> (1.31%) or CORN<SUB>B</SUB> (1.66%). Apparent Dry Matter (DM) and Organic Matter (OM) digestibilities were greater (p = .01) when fed CORN<SUB>B</SUB> (69.91 and 71.23%) or HULLS<SUB>B</SUB> (70.47 and 72.12%) than HAY<SUB>B</SUB> (57.54 and 59.12%). Apparent neutral (NDF) and acid (ADF) detergent fiber digestibilities were not different (p = .09; between 635.4 and 73.69%). Apparent CP and GE digestibilities were less (p = .02) when fed HAY<SUB>B</SUB> (53.63 and 57.19%) than CORN<SUB>B</SUB> (703.7 and 69.68%) or HULLS<SUB>B</SUB> (63.85 and 70.06%), while apparent CP and GE utilization were greater (p< .01) when fed HULLS<SUB>B</SUB> (0.46 kg d <SUP>1</SUP> and 14.09 Mcal d <SUP>1</SUP>, respectively) than CORN<SUB>B</SUB> (0.13 kg d <SUP>1</SUP> and 9.83 Mcal d <SUP>1</SUP>, respectively) or HAY<SUB>B</SUB> (-0.19 kg d <SUP>1</SUP> and 6.33 Mcal d <SUP>1</SUP>, respectively). During digestion trial, 6 cannulated steers receiving hay with: no supplement (HAY<SUB>D</SUB>); corn 0.455% BW (CORN<SUB>D</SUB>); or SBH 0.607% BW (HULLS<SUB>D</SUB>). Hay DMI was not different (p = .18; ranging from 0.123-0.151%). Total DMI of steers fed HULLS<SUB>D</SUB> and CORN<SUB>D</SUB> was greater (p< .01; 1.98 and 2.08%, respectively) than those fed HAY<SUB>D</SUB> (1.26%). Apparent DM, OM and CP digestion by steers fed HAY<SUB>D</SUB> was less (p< .01; 52.85, 53.41 and 49.23%, respectively) than CORN<SUB>D</SUB> (61.98, 62.77, 64.72%, respectively) or HULLS<SUB>D</SUB> (65.68, 66.68 and 67.54%, respectively). Apparent NDF and ADF digestion were greater (p = .01) when fed HULLS<SUB>D</SUB>, (63.95 and 64.45%, respectively) than CORN<SUB>D</SUB> (52.82 and 49.59%, respectively) or HAY<SUB>D</SUB> (53.89 and 50.29%, respectively). Supplementing bermudagrass hay with corn or SBH enhanced total DMI and apparent DM, OM and CP digestion. Supplementation also increased CP and GE utilization while SBH supplementation tended to increased fiber digestion.
ER  -