Volume 14, Issue 4 (12-2023)
Res Anim Prod 2023, 14(4): 1-10 |
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Zahediyan Far S, Rezaei M, Kazemi Fard M. (2023). The Effect of Adding Stevia Leaf Powder and Probiotics on Performance, Carcass Characteristics, Intestinal Microbial Population and some Blood Parameters in Japanese quail. Res Anim Prod. 14(4), 1-10. doi:10.61186/rap.14.42.1
URL: http://rap.sanru.ac.ir/article-1-1305-en.html
URL: http://rap.sanru.ac.ir/article-1-1305-en.html
1- Sari Agricultural Sciences and Natural Resources University, Sari, Iran
2- Department of Animal Science, Faculty of Animal Science and Fisheries, Sari University of Agricultural Sciences and Natural Resources, Sari, Iran
2- Department of Animal Science, Faculty of Animal Science and Fisheries, Sari University of Agricultural Sciences and Natural Resources, Sari, Iran
Abstract: (1362 Views)
Extended Abstract
Background: This study was conducted to investigate the effects of probiotics (lacto-feed) and stevia leaf powder as a phytogenic compound in the diet on performance, carcass characteristics, intestinal microbial population, and some blood parameters in Japanese quail.Methods: The experiment was designed as a completely randomized design with 320 Japanese quail chicks of mixed sexes (average weight 7-9 g), comprising four treatments, four replications, and 20 chicks per replicate. The experimental treatments included: 1) Diet without additives (control), 2) Diet containing probiotic lacto-feed (0.02% up to 21 days and 0.01% up to 42 days), 3) Diet containing 1% stevia leaf powder, and 4) Diet containing 2% stevia leaf powder. The effects of probiotic lacto-feed and stevia leaf powder as phytogenic compounds in the diet were assessed on yield, carcass characteristics, intestinal microbial population, and some blood parameters of Japanese quail.
Results: The results showed that there were significant differences in weight gain and feed conversion ratio among the experimental treatments (p < 0.05). The treatments containing stevia leaf powder exhibited the highest weight gain and the lowest feed conversion ratio, with differences increasing as the percentage of stevia leaf powder increased (p < 0.05). Carcass weight in treatments containing stevia and lacto-feed was significantly higher than in the control treatment (p < 0.05). Additionally, the inclusion of lacto-feed probiotics and stevia leaf powder resulted in a significant increase in thigh percentage compared to the control group (p < 0.05). The control treatment had the highest abdominal fat percentage (1.21%), while the lacto-feed treatment had the lowest (0.38%) (p < 0.05). The highest concentrations of triglycerides and VLDL were observed in the treatment containing probiotic lacto-feed (p < 0.05). Furthermore, the treatments containing stevia leaf powder had higher triglyceride concentrations than the control treatment (p < 0.05). Blood glucose levels were significantly higher in the treatment containing probiotic lacto-feed, while the treatments containing stevia leaf powder resulted in lower glucose levels compared to the control treatment (p < 0.05). The effects of experimental treatments on the total population of aerobic microbes and coliforms were not significant, whereas the population of Lactobacillus in treatments containing stevia leaf powder was significantly higher than in the control treatment (p < 0.05).
Conclusion: It can be concluded that the use of stevia leaf powder as a phytogenic compound in the diet improved the performance and carcass characteristics of Japanese quail chicks.
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