Typical Calving Patterns and Associated Loss in Weaning Weight ----------------------------------------------------------- Percentage Calving Season of Calves Lost Weight per Calf* ----------------------------------------------------------- Born first 21 days 58 % zero Born first 42 days 85 % 48.3 pounds Born after first 42 days 15 % 96.6 pounds ----------------------------------------------------------- ----------------------------------------------------------- * Assumes a typical calf gains 2.3 pounds per day