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The article analyzes the carry-over effect of probiotics with different strains of lactobacilli, streptococci and yeast on the productive capabilities of laying birds when fed with microbial combinations at up to 8 weeks of age. 147 one-week-old chicks were divided into 7 groups where the control group was fed with culture medium while the rest had probiotics from different indigenous sources. It concluded that probiotic feeding resulted in better egg laying performance and that there was no need to mix microbe strains from different sources.

The article discusses a study on the carry-over effect of probiotics on the biological and productive performance of laying birds when the microbial combinations are fed only up to 8 weeks old. One-week old layer chicks were distributed randomly into seven groups with each having 3 replicates of 7 chicks with almost similar average group weights. It suggests that there is no need to supplement the diets with the probiotics up to 18 weeks of age and the feed consumed per kilogram egg mass production was lower.