Effect of egg storage duration on spread of hatch, chick quality and organ development in FUNAAB-alpha chickens
Keywords:chick quality, FUNAAB-alpha chicken, egg storage, environment, hatching time, hatchability
Effect of egg storage duration (0, 4, 8, 12 vs. 16 days) on spread of hatch, chick quality and organ development in FUNAAB-alpha chickens was determined. Hatching eggs (n=200; 53.2±4.67g) were used. Hatchability was significantly (P<=0.001) affected by storage duration. Hatchability of eggs stored for 0, 4 and 8 days was higher than for eggs stored for 12 and 16 days. Eggs stored for 4 days hatched earlier than the rest. Hatching commenced after 466 hours incubation time in eggs stored for 4 days, after 472 hours in 0 and 12 days, and 478 hours in 8 and 16 days storage duration. Time delay of 50% hatch resulting from additional storage after 4 days was 60, 45, 37.5 and 60 minutes/day for 0, 8, 12 and 16 day storage, respectively. Storage length had a significant (P<=0.05) effect on chick activity and closeness of navel. Chicks from 16 day stored eggs were less active than others. Navel closeness was higher in 8 day storage than those from fresh eggs. Chick length was significantly (P<=0.001) affected by egg storage duration. Longest chicks were obtained from 8 day storage eggs, while the shortest were from 16 day storage. The weights of gizzard (P<=0.01) and yolk remnant (P<=0.05) were affected by storage length. Gizzards in 8 and 12 day egg storage chicks were heavier than in 16 day eggs. Weights of gizzards in 0 and 4 day groups were similar to the other three groups. Yolk remnant was lightest in 8 day egg storage chicks and heaviest in 16 day egg storage chicks. In conclusion, egg storage for 4 days yielded better and earlier hatchability. To obtain chicks with good quality, egg storage should not be extended beyond 8 days.