CONCLUSIONS
The results of the present experiments indicate that dietary inclusion of both red pepper powder and pigment were successful in increasing the egg yolk score of laying hens which would make these eggs more attractive to potential consumers. Neither product produced any negative effects on laying hen productivity and both products had
a tendency to increase the weight of the eggs from treated hens.
The present study suggests that superfine grinding is superior to normal grinding for red pepper powder production as scanning electron microscopy indicated complete breakup of the cell wall structure of the red pepper with superfine grinding, while with normal grinding, many intact cells were still observed. Use of Na2 CO3 before or after grinding did not have any beneficial effects on egg yolk color over that obtained with superfine grinding alone. Therefore, there would appear to be little justification for including it in the process to produce red pepper powder.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4093037/
In the present study the growth and reproductive organ differences in chickens fed a diet containing 1% red hot pepper (10 g/kg diet) from the first day of age were investigated. In birds fed with the experimental diet it was observed that the abdominal fat content decreased. During the experiment the increase in weight gain in the treated group in the first 4 months was reversed in favour of the control group in month 5. Follicular development in the treated group was faster and laying started 11 days before the control group, and the epithelial and muscular development of the oviduct was always greater than that of the control group.
The results indicated that red hot pepper consumed in lower concentrations during the development period in the chickens caused faster development of the reproductive system organs. Laying started 11 days earlier in chicks fed with the red hot pepper added diet, an important economic aspect for egg producers, but which may have implications for other animals. A decrease in abdominal fat content and disorders of lipid metabolism are still under investigation. Copyright 2005 John Wiley & Sons, Ltd.
[COLOR=333333]
http://onlinelibrary.wiley.com/doi/10.1002/ptr.1690/abstract[/COLOR]
and for just hatched brolier:[COLOR=2A2A2A] (3) CONT + 250 mg/kg of red pepper essential oil (RPO250). Irrespective of dietary treatment, especially delayed access to diet and water for 48 h posthatch significantly decreased daily BW gain from 0 to 21 d and daily feed intake from 4 to 21 d and increased the relative weight of the yolk sac at 3 d of broilers. The relative weight of the liver or gizzard of chickens at 21 d was significantly decreased by delayed access to diet and water for 24 h posthatch. The diet containing RPO250 significantly increased the relative weight of the pancreas at 21 d. Delayed access to diet and water for 24 or 48 h posthatch significantly reduced serum glucose levels at 21 d. The serum aspartate aminotransferase level in broilers given immediate access to feed and water was significantly decreased by the diet containing RPO250. Generally, the coliform bacteria and total yeast contents of the small intestine of chickens were significantly increased by extending the time to access to feed and water for broilers. Total aerobic bacteria contents of the small intestine of broilers with immediate, or 24- or 48-h posthatching delayed access to diet and water was significantly decreased by CONT, OO250, and RPO250 diets.
https://academic.oup.com/japr/article/22/4/738/762244/Effects-of-oregano-or-red-pepper-essential-oil[/COLOR]
