A total of 3522 eggs were analyzed to determine if duration of egg storage and warming treatments during storage significantly affects incubation performance of Muscovy ducks. The eggs were collected and assigned randomly to one of the six storage treatments groups: 3,7, or 14 days of storage, always below the physiological zero (18°C) and 3,7,or 14 days of storage with a daily warming for half an hour at 37°C. Fresh egg weight was recorded. The eggs were placed on metallic egg flats and were daily turned during storage. Weight of each egg was measured after storage to determine amount of weight lost during storage. Mortality was highest in eggs that were stored for a longer period of time. Daily warmed eggs had significantly higher hatching rate at 7 days of pre-incubation storage than eggs stored always below the physiological zero. One of the reasons for the increased incidence of embryonic mortality in eggs that were stored for longer periods may be related to the increased egg weight loss during storage.
Effect of warming treatments during duck egg storage on incubation performance.
BAGLIACCA, MARCO;MARZONI FECIA DI COSSATO, MARGHERITA;PACI, GISELLA;
1995-01-01
Abstract
A total of 3522 eggs were analyzed to determine if duration of egg storage and warming treatments during storage significantly affects incubation performance of Muscovy ducks. The eggs were collected and assigned randomly to one of the six storage treatments groups: 3,7, or 14 days of storage, always below the physiological zero (18°C) and 3,7,or 14 days of storage with a daily warming for half an hour at 37°C. Fresh egg weight was recorded. The eggs were placed on metallic egg flats and were daily turned during storage. Weight of each egg was measured after storage to determine amount of weight lost during storage. Mortality was highest in eggs that were stored for a longer period of time. Daily warmed eggs had significantly higher hatching rate at 7 days of pre-incubation storage than eggs stored always below the physiological zero. One of the reasons for the increased incidence of embryonic mortality in eggs that were stored for longer periods may be related to the increased egg weight loss during storage.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
