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Abstract
This work aimed to study the changes in the intestinal microflora in
broody and non broody balady hens, as well as in naturally and artificially
hatched balady chicks. Moreover evaluation of protection ability of Normal
intestinal microflora preparation (NIMP) and competitive exclusion
product (CE) Broilact against experimental infection with Salmonella
typhimurium and Eimeria tenella in balady chicks.
1 – Experiment I
Among the normal intestinal microflora; Escherichia coli, Enterococci,
Lactobacilli and Clostridium perfringens were successfully isolated from
faeces of all examined eleven month old broody and non broody hens at
different periods. The total anaerobic count was higher in broody balady
hens at 5th and 10th day of brooding (8.61 ± 0.25 ) and (8.72 ± 0.22)
respectively than in the non broody (8.25 ± 0.40) which were synchronized
with a decline in pH of broody hens at 5th and 10th day of brooding 6.07 ±
0.05 and 5.94 ± 0.06 respectively. where a significant rise in prolactin
hormone level was detected in broody hens (6.31 ± 0.12) pg/ml serum if
compared to non broody hen (292 ± 0.21) pg/ml serum.
2 – Experiment II
The total anaerobic count of caecal contents in the naturally hatched
chicks up to 21st day of age were significantly higher than in artificially
hatched ones.