Herd Breeding Problems and Their Consequences

摘要: Abstract Low fertility is widely recognized as one of dairy management's major problems. The magnitude this problem cannot be put into proper perspective until the consequences low are translated economic terms. Unfortunately, sufficient information not available to do accurately. Nevertheless, an estimate that will adequately serve purpose discussion can made by combining a few reasonable estimates and assumptions with what statistics available. Milk production losses. Speicher Meadows (7) concluded delay in conception beyond 86 up 116 days after freshening reduced milk calf returns over feed cost average $.50 for each day 86. When was delayed 117 or longer, were decreased $.78 days. Louca Legates (4) reported more modest loss excessive open.