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Diet Quality and Performance of Heifers in the Subtropics

Mimi J. Williams*,a, Chadwick C. Chase, Jr.a and Andrew C. Hammondb

a USDA-ARS, Subtropical Agric. Res. Stn., 22271 Chinsegut Hill Rd., Brooksville, FL 34601-4672
b Usda-Ars, Saa, Athens, Ga 30604



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Fig. 1. Monthly rainfall (mm) and average monthly temperature (°C) at the USDA-ARS Subtropical Agricultural Research Station, Brooksville, FL in 1990, 1991, and 1992.

 


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Fig. 2. Forage mass availability on continuously (CON) and rotationally (ROT) grazed bahiagrass pastures in 1990, 1991, and 1992.

 


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Fig. 3. Crude protein (CP) content of continuously (CON) and rotationally (ROT) grazed bahiagrass pastures in 1990, 1991, and 1992.

 


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Fig. 4. In vitro organic matter digestibility (IVOMD) of continuously (CON) and rotationally (ROT) grazed bahiagrass pastures in 1990, 1991, and 1992.

 


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Fig. 5. Plasma urea nitrogen (PUN) concentration of heifers continuously (CON) or rotationally (ROT) grazing bahiagrass pastures in 1990, 1991, and 1992.

 


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Fig. 6. Average daily gain (ADG) of heifers continuously (CON) or rotationally (ROT) grazing bahiagrass pastures in (a) 1990, (b) 1991, and (c) 1992.

 





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