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J. Dairy Sci. 87:3736-3745
© American Dairy Science Association, 2004.

Growth Performance and Health of Dairy Calves Bedded with Different Types of Materials

R. Panivivat1, E. B. Kegley1, J. A. Pennington2, D. W. Kellogg1 and S. L. Krumpelman1

1 Department of Animal Science, University of Arkansas, Fayetteville 72701
2 Department of Animal Science, University of Arkansas Cooperative Extension Service, Little Rock 72203

Corresponding author: E. B. Kegley; e-mail: ekegley{at}uark.edu.

Granite fines, sand, rice hulls, long wheat straw, and wood shavings were compared as bedding for 60 female dairy calves. Growth, health, stress indices, and behavior of newly born calves, along with physical characteristics and bacterial counts of bedding, were evaluated for 42 d during August to October, 2002. Overall average daily gain and dry matter intake of calves did not differ due to bedding type, although during wk 2 calves housed on rice hulls had the greatest dry matter intake and those housed on wood shavings had the lowest. During wk 2, calves housed on granite fines and sand were treated more often for scours, and calves housed on long wheat straw received the fewest antibiotic treatments (week by bedding material interaction). Granite fines formed a harder surface than other bedding, and calves housed on granite fines scored the dirtiest. When bedding materials were evaluated, sand was scored to be the dirtiest, while pens bedded with rice hulls, long wheat straw, and wood shavings scored cleaner. Long wheat straw had the warmest surface temperature, and rice hulls and wood shavings were warmer than granite fines and sand. Serum cortisol, {alpha}1-acid glycoprotein, immunoglobulin G concentrations, and the neutrophil:lymphocyte ratio were not affected by bedding type. On d 0, coliform counts were greatest in rice hulls. After use, coliform counts were greatest in long wheat straw (week by bedding material interaction). On d 42, the concentration of ammonia at 10 cm above the bedding was lowest for long wheat straw. Growth performance of calves bedded for 42 d with 5 bedding types did not differ; however, the number of antibiotic treatments given for scours was greatest on granite fines and sand; coliform counts in the bedding were highest in rice hulls before use and in long wheat straw after 42 d of use.

Key Words: calf bedding material • growth performance • health • bacterial count

Abbreviation key: AGP = {alpha}1-acid glycoprotein, N:L = neutrophil:lymphocyte ratio






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