Abstract
ABSTRACT: This study was conducted to evaluate the effects of different levels of dietary hot pepper (Capsicum annuum L.) waste supplementation on egg production performance and quality in Japanese quail hens (Coturnix coturnix japonica). A total of 192, seven-week-old Japanese quail layers were divided into 4 treatment groups of similar mean weight (304±0.5 g), each comprising 12 subgroups (including 1 male and 3 females). Treatment birds were fed on experimental basal layer diet supplemented with 1, 2 or 4 g hot pepper waste powder (HPWP) per kg diet. The laying performance was determined by recording feed intake, egg weight, daily egg production, and biweekly egg quality. Results showed that HPWP supplementation to layer diet did not have any significant (P>0.05) effects on body weight and feed conversion ratio, while it had significant effects on feed intake (P<0.01), and laying egg weight, average egg weight, total egg yield (P<0.05). A 2 g HPWP supplementation resulted in the highest total egg yield (P<0.05) with quadratic effects on egg shape index (P<0.05) and albumen pH (P<0.01). According to the values in the study, the egg shape index of 2 g HPWP group was circular and; therefore, attractive to consumers. We highly recommend the non-economic value of 2 g/kg supplementation of hot pepper waste powder, especially for egg production. To conclude, HPWP can be used for quail layer diets due to its beneficial effects on egg quality since it is an economic and easy agricultural by-product obtained from red pepper paste industry waste.
Highlights
Egg is the richest and cheapest animal protein resource for human health or food
The organic matter or moisture (OM: M method 934.01), crude protein (CP: method 984.13), crude fiber (CF: method 978.10), ether extract (EE: method 920.39), ash (ash: method 942.05 (4.1.10)), Acid Detergent Fiber (ADF: BFM62) and Neutral Detergent Fiber (NDF: BFM119) contents of the hot pepper waste powder and animal feeds were determined according to the AOAC procedure (2006) (Tables 1 and 2)
Results for the change in body weight effects of hot pepper waste powder (HPWP) supplementation showed that the group subjected to 2 g/kg of HPWP supplementation recorded the least change in BW
Summary
Egg is the richest and cheapest animal protein resource for human health or food For this reason, its production has been increased in worldwide scale. While antibiotics are used for growth regulation and health protection in poultry nutrition, there is increasing human resistance to antibiotics (Castanon, 2007) For this reason, the feed industry has not used antibiotics anymore, especially in the EU, in feed formulations for poultry and researchers are searching for new additives in feed formulation materials as an alternative to antibiotics. There has not been any study on the use of red pepper waste (byproducts) in poultry nutrition as a feed or feed additive For this reason, we conducted this study to investigate whether red pepper paste industry waste would affect the laying performance and egg quality of Japanese quail layers
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