Effect of deprivation on productive traits of newly hatched chicks : histopathological study

الملخص EN

The aim of this study was to investigate the effect of deprivation on productive traits of newly post hatched chicks.

A total number of Ross 308 birds (120) were divided into four groups as in the following way: group1 (G1=38 bird), was regarded as positive control and had been supplied directly with the feed, whereas group2 (G2=27 bird), group3 (G3=28 bird) and group4 (G4=27 bird) were supplied with the diet at post hatch period of 24h, 48hr and 72h respectively.

Water supplied was ad libitum to all groups immediately after placing.

Result revealed that G1 showed significant performance (P<0.05) according to the level of yolk sac absorption (Y.S.A), Feed Conversion Ratio (F.C.R).

The final body weight gain (B.W.G) showed significant increase in G1 (P<0.05) as compared to other groups.

In conclusion the study showed that chicks which have fed immediately after hatching were significantly exceeded (P<.0.05) the deprived chicks concerning the used up of residual yolk for more than 48h as well deprived chicks showed low productive traits.