References
- Brouk , M. J. , Smith , J. F. and Harner , J. P. 2002 . Effect of sprinkling frequency and airflow on respiration rate, skin temperature and body temperature of heat-stressed dairy cattle . J. Dairy Sci. , 85 ( Suppl. 1 ) : 43
- Capuco , A. V. , Akers , R. M. and Smith , J. J. 1997 . Mammary growth in Holstein cows during the dry period: quantification of nucleic acids and histology . J. Dairy Sci. , 80 : 477 – 487 .
- Collier , R. J. , Dahl , G. and VanBaale , M. J. 2006 . Major advances associated with environmental effects on dairy cattle . J. Dairy Sci. , 89 : 1244 – 1253 .
- García , E. 1985 . Modificaciones al Sistema de Clasificación Climática de Köppen (para adaptarlo a las condiciones de la República Mexicana) , México, D.F. : Instituto de Geografía. Universidad Nacional Autónoma de México, 2a edición .
- Hahn , G. L. 1999 . Dynamic responses of cattle to thermal heat loads . J Dairy Sci. , 82 ( Suppl. 2 ) : 10 – 20 .
- Ingvartsen , K. L. and Andersen , J. B. 2000 . Integration of metabolism and intake regulation: A review focusing on periparturient animals . J. Dairy Sci. , 83 : 1573 – 1579 .
- Nardone , A. , Lacetera , N. , Bernabucci , U. and Ronchi , B. 1997 . Composition of Colostrums from dairy heifers exposed to high air temperatures during late pregnancy and the early postpartum period . J. Dairy Sci. , 80 : 1877 – 1882 .
- Ravagnolo , O. , Misztal , I. and Hoogenboom , G. 2000 . Genetic component of heat stress in dairy cattle, development of heat index function . J. Dairy Sci. , 83 : 2120 – 2125 .
- SAS . 2004 . SAS/STAT User's Guide. Software released 9.12 , Cary, N.C. : SAS Institute Inc. .
- St-Pierre , N. R. , Cobanov , B. and Schnitkey , G. 2003 . Economic losses from heat stress by US livestock industries . J. Dairy Sci. , 86 ( Suppl. ) : E52 – E77 .
- Tarazon , M. , Valenzuela , J. , Araiza , S. and Denogean , F. 2004 . Productive and reproductive performance of bathed cows during the summer . J. Dairy Sci. , 87 ( Suppl. 1 ) : 375
- West , J. W. 2003 . Effects of heat stress on production in dairy cattle . J. Dairy Sci. , 86 : 2131 – 2144 .
- Wildman , E. E. , Jones , G. M. , Wagner , P. E. , Boman , R. L. , Troutt , H. F. and Lesch , T. N. 1982 . A dairy cow body condition scoring system and its relationship to selected production characteristics . J. Dairy Sci. , 65 : 495 – 501 .