Effects of dietary organic acids and essential oils on growth performance and carcass characteristics of broiler chickens

An experiment was conducted to evaluate the effects of Bio strong Forte (BF) on the performance of broiler chickens. The BF is a commercial blend of essential oils and organic acids. Five hundred and forty (540) day old Ross broiler chicks were used in the feeding trial. The birds were randomly distributed into five treatments, each replicated thrice with 36 chicks per replicate. T1 is the control; T2, T3 and T4 had 50, 75 and 100g BF per 100kg feed, respectively while T5 had Oxytetracycline (AGP) 60g/100kg of feed. The five diets were supplied ad libitum to birds for 42 days. Parameters collected were growth performance indices, haematological parameters, liver function indices, and carcass quality. All data were subjected to analysis of variance and significant (P

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Effects of Microencapsulated Blends of Organics Acids (OA) and Essential Oils (EO) as a Feed Additive for Broiler Chicken. A Focus on Growth Performance, Gut Morphology and Microbiology

Animals ◽

10.3390/ani10030442 ◽

2020 ◽

Vol 10 (3) ◽

pp. 442 ◽

Cited By ~ 1

Author(s):

Alessandro Stamilla ◽

Antonino Messina ◽

Sabrina Sallemi ◽

Lucia Condorelli ◽

Francesco Antoci ◽

...

Keyword(s):

Organic Acids ◽

Essential Oils ◽

Growth Performance ◽

Clostridium Perfringens ◽

Broiler Chickens ◽

Average Daily Gain ◽

Feed Additive ◽

Feed Conversion ◽

Gut Morphology ◽

Dietary Treatments

The goal of the trial was testing the effects of a blend of organic acids and essential oils dietary supplementation on growth performance and gut healthiness in broiler chickens. In total, 420 male Ross 308 chicks (1-day old) were randomly assigned to two dietary treatments: basal (BD) and organic acids and essential oils (OA&EO) diets (three replicates/treatment; 70 broilers/replicate). BD group received commercial diets whereas OA&EO group basal diets + 5 g/kg of microencapsulated organic acids and essential oils. OA&EO treatment improved the average daily gain (p < 0.01) and feed conversion ratio at 37–47 days compared to BD treatment. OA&EO treatment improved gut morphology mostly at ileum and duodenum levels in terms of villi height, crypt depth, number of villi, mucosa thickness and villi area at 24 and 34 sampling days. A certain selective action against Clostridium perfringens in ileum of OA&EO group was shown at 33 (p = 0.053) and 46 days (p = 0.09) together with lower median values for Enterobacteriaceae, Enterococci, Mesophilic bacteria and Clostridium perfringens at ceca level. Overall, organic acids and essential oils supplementation improved growth performance in the final growth stage and some morphological gut traits and reduced to a certain extent Clostridium perfringens count in ileum.

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The Effect of Replacing Dried Meal Worm with Soybean Meal on Growth Performance and Carcass Characteristics of Broiler Chickens

10.21203/rs.3.rs-782326/v1 ◽

2021 ◽

Author(s):

Navid Naderi Boroojerdi ◽

Mostafa Rajabzadeh

Keyword(s):

Growth Performance ◽

Soybean Meal ◽

Broiler Chickens ◽

Relative Weight ◽

Carcass Characteristics ◽

Basal Diet ◽

Control Treatment ◽

Broiler Chicks ◽

Feed Conversion ◽

Significant Difference

Abstract An experiment was conducted on 240 one-day old male (Ross308) chicken to the effect of substitution of dried mealworm (Tenebrio molitor) with soybean meal on growth performance and carcass characteristics broiler chicks. Chicks fed in a completely randomized design with 4 replicate cages (12 birds per cage). Five dietary treatments used: 1- Control treatment: Basal diet based on corn-soybean meal without adding dried mealworm, 2- Replacement of 5% dried mealworm with soybean meal in the base diet, 3- Replacement of 10% dried mealworm with soybean meal in the base diet, 4- Replacement of 15% dried mealworm with soybean meal in the base diet and 5- Replacement of 20% dried mealworm with soybean meal in the base diet. The results of the experiment showed that 3rd and 4th treatments with a substitution of 10 and 15 percent showed a higher mean weight gain and a daily gain, but their feed intake was lower comparing other treatments, and finally, the feed conversion ratio showed a significant decrease with respect to control treatment using these replacement levels. At 21 and 42 days of age, carcass yield and relative weight of the breasts showed significant increases in treatments 3 and 4, and other characteristics of chicken carcasses were not affected by the test treatments. The experiment showed that replacing soybean meal with 10% and 15% worm powder significantly improved the performance of broiler chickens, but no significant difference was found between the two levels.

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Effect of Varying Light Intensity on Growth Performance and Carcass Characteristics of Broiler Chickens Grown to Heavy Weights

International Journal of Poultry Science ◽

10.3923/ijps.2011.921.926 ◽

2011 ◽

Vol 10 (12) ◽

pp. 921-926 ◽

Cited By ~ 8

Author(s):

H.A. Olanrewaju ◽

J.L. Purswell ◽

S.D. Collier ◽

S.L. Branton

Keyword(s):

Light Intensity ◽

Growth Performance ◽

Broiler Chickens ◽

Carcass Characteristics

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Influence of salbutamol administered as the single active enantiomer (R-salbutamol) on the growth performance and carcass characteristics of broiler chickens

Animal Science ◽

10.1017/s1357729800053807 ◽

2004 ◽

Vol 78 (1) ◽

pp. 23-30 ◽

Cited By ~ 2

Author(s):

J. P. Fawcett ◽

V. Ravindran ◽

P. C. H. Morel ◽

M. Zhang ◽

V. B. Ciofalo ◽

...

Keyword(s):

Growth Performance ◽

Broiler Chickens ◽

Control Diet ◽

Relative Weight ◽

Carcass Characteristics ◽

Tissue Concentrations ◽

Carcass Parameters ◽

Leg Muscle ◽

Dose Response Effect ◽

Pharmacologically Active

AbstractSalbutamol (albuterol) is a β-adrenergic agonist marketed as a racemic (50: 50) mixture of R- and S-enantiomers (rac-salbutamol). Since only R-salbutamol is pharmacologically active and S-salbutamol has a longer half-life in humans, we examined R-salbutamol as a performance enhancer and repartitioning agent in domestic chickens. The effects of feeding diets containing R-salbutamol (5, 10 and 15 mg/kg diet) and rac-salbutamol (10 mg/kg diet) from day 21 to 42 post hatching on growth performance, carcass characteristics and tissue concentrations of R- and S-salbutamol in male and female broilers were compared with a control diet. R-salbutamol in the diet lowered the weight gains in both sexes, but the magnitude of reduction was greater in males as indicated by a significant R-salbutamol ✕ gender interaction. R-salbutamol also lowered food intake and improved food conversion ratios in both sexes. The relative weights of breast muscle and leg muscle were significantly increased and the relative weight of the fat pad was significantly decreased in birds of both sexes given diets containing R-salbutamol. Carcass protein content increased and carcass fat content decreased but the differences were not statistically significant. A significant dose-response effect was observed for tissue concentrations of R-salbutamol in all tissues, except the fat. Performance and carcass parameters in chickens given the 5 mg/kg R-salbutamol diet were similar to those given the 10 mg/kg rac-salbutamol diet, but tissue concentrations of R-salbutamol were lower. Chickens given the 10 mg/ kg rac-salbutamol diet had higher tissue concentrations of salbutamol than chickens given the 10 mg/kg R-salbutamol diet and higher concentrations of S-salbutamol than R-salbutamol in liver and leg muscle. Overall, these results demonstrate that R-salbutamol is an effective repartitioning agent in broiler chickens.

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