Zabihollah nemati; magsoud besharati; amir karimi
Abstract
The current research was designed to evaluate the effect of dietary addition of garlic powder, Cornerian cherry fruit powder (CH) and a mixture essential oil of castor and cashew nut shell (EO) on performance, egg quality and some blood parameters in commercial laying hens. One hundred and twenty-eight ...
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The current research was designed to evaluate the effect of dietary addition of garlic powder, Cornerian cherry fruit powder (CH) and a mixture essential oil of castor and cashew nut shell (EO) on performance, egg quality and some blood parameters in commercial laying hens. One hundred and twenty-eight 58-wk-old LSL laying hens were used in 4 treatments with 4 replicates and 8 birds per each in a completely randomized design. The experimental diets included: 1) Basal diet; 2) Basal diet +1% garlic powder; 3) Basal diet+1% CH and 4) Basal diet+0.15 percent EO. The experimental diets were fed from 59 to 63 weeks of age. The productive performance was recorded from 61 to 63 weeks of age and blood and egg yolk parameters measured at the end of the experimental period. There were no significant differences in laying hen performance among all treatments. Albumen height and Haugh unit was increased in CH compared to the control group (p<0.05). The blood cholesterol, HDL, triglyceride and aspartate aminotransferase and alanine aminotransferase enzymes did not show any significant difference among treatments. The garlic and CH powders significantly decreased egg yolk cholesterol concentration (p<0.05), however it was not significantly affected by the EO. Finally, it was concluded that addition of CH and garlic powder in the diet of laying hens could improve the egg quality and reduce yolk cholesterol concentrations.
Razieh Valipourian; farid shariatmadari; Mihammad Amir Karimi Torshizi
Abstract
This study was conducted to evaluate the effects of garlic and thyme’s medicinal plants essential oils blend as a feed additive following feed restriction on growth performance, relative growth rate and ileal microbial population of broiler chickens. This study was conducted using 336 one-day old ...
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This study was conducted to evaluate the effects of garlic and thyme’s medicinal plants essential oils blend as a feed additive following feed restriction on growth performance, relative growth rate and ileal microbial population of broiler chickens. This study was conducted using 336 one-day old chickens (Ross 308) as a factorial experiment (2×3) in a completely randomized design in six treatments with four replications and 14 birds per each replicate . The factors included two levels of feed restriction (without feed restriction and %10 feed restrictions) and three types of growth promoter additives (none-additive, blend of essential oils and antibiotic). The results showed that the body weight in 18 days of age was significantly affected by feed restriction (P <0.05). Feed restriction, feed additive and interaction between them did not affect the performance parameters. The addition of EO resulted in significant reduction in mortality rate (P <0.05). Feed costs for one kg of body weight were not affected by experimental treatments. Under the feed restriction, the population of E. coli and the total aerobic bacteria in ileum significantly reduced at 18 days of age (P <0.05). At 42 days of age, the addition of EO resulted in a significant reduction in E.coli, total aerobic bacteria count and increasing Lactobacillus counts (P <0.05). As a general conclusion, use of EO in feeding chicks faced with feed restriction could significantly increase the compensatory growth and might reduce the mortality and improve the ileal microbial population as well.