The Effects of Different Growth Promoters on Performance and Carcass Characteristics of Broiler Chickens

Mokhtari, Razieh; Yazdani, A.R.; Rezaei, Mansour; Ghorbani, Behnam

doi:10.3923/javaa.2010.2633.2639

Cited by 26 publications

(22 citation statements)

References 17 publications

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“…The fact that the addition of Syn had no effect on other internal organs and carcass parameters, except for abdominal fat weight and percentage, is consistent with other studies on quails (Sahin et al, 2008;Sharifi et al, 2011) and broilers (Elfaki and Mukhtar, 2015;Saiyed et al, 2015). Moreover, the fact that the addition of Syn reduced abdominal fat weight and percentage is consistent with the results of Saiyed et al (2015) and Mokhtari et al (2015). Fattening is an undesirable condition in commercial poultry production; abdominal fat is one of the carcass parameters that is not consumed.…”

Section: Discussionsupporting

confidence: 81%

“…In the current study, supplementation with Syn decreased the abdominal fat weight and percentage in the male group compared with the control group. In accordance with the present results, Mokhtari et al (2015) established that significantly reduced abdominal fat was observed with broiler diets, depending on the addition of Syn. According to Beserra et al (2015), the administration of Syn is efficient in improving lipid profiles.…”

Section: Discussionsupporting

confidence: 80%

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Effects of dietary addition of synbiotic on the performance, carcass traits, and serum parameters of Japanese quails

Tufan

Bolacali

2017

R. Bras. Zootec.

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-This study aimed to evaluate the effects of different levels of synbiotic (Syn) on the growth performance, carcass traits, and serum parameters of Japanese quails. A total of 1,500 (750 male and 750 female) Japanese quails were assigned to five treatments, including the control (basal diet) and basal diets with the addition of 0.1, 0.2, 0.3, and 0.4% Syn according to a completely randomized design. Each treatment in the male and female experiment groups consisted of five replicates, with 30 chicks for each replicate. The addition of Syn had no effect on body weight (BW), while the BW of female quails was higher than that of male quails at day 42. The addition of Syn reduced feed intake (FI) and improved the feed conversion ratio (FCR) (P<0.000). The daily body weight gain and FI were significantly higher in female than in male quails and Syn also improved the FCR in the overall experiment. The effect of the addition of Syn on carcass parameters (except for abdominal fat) was not determined. The addition of Syn decreased abdominal fat weight and percentage when compared with the control group. Male quails were found to have higher carcass yield, wing, neck, and other percentages than female quails. However, female quails were found to have higher breast, breast skin, abdominal fat, and visceral organ percentages. The addition of 0.1% Syn to quail ration reduced serum aspartate aminotransferase, high-density lipoprotein (HDL), total protien (TP), and albumin (ALB) levels at day 42 of the trial. The addition of Syn decreased the serum total cholesterol level. Gender was found to have an effect in that female quails were found to have higher total cholesterol, HDL, TP, and ALB levels than male quails. In both genders, the addition of Syn improved the BWG, FC, and FCR in the overall experiment, reduced abdominal fat, decreased the total cholesterol levels, improved the HDL levels, and increased the TP and ALB levels at day 42. The addition of 0.3 and/or 0.4% synbiotic has a positive effect on quails by improving performance and enhancing some serum lipids and protein parameters.

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Section: Discussionsupporting

confidence: 81%

Section: Discussionsupporting

confidence: 80%

Effects of dietary addition of synbiotic on the performance, carcass traits, and serum parameters of Japanese quails

Tufan

Bolacali

2017

R. Bras. Zootec.

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“…Under the conditions of the experiment, the use of probiotics and symbiotic as a growth factor showed the same efficiency of antibiotics in relation to cut and carcass yields. Similar results were reported by Mokhtari, Yazdani, Rezaei and Ghorbani (2010) who studied the effects of different growth factors including probiotic constituted of Bacillus subtilis and prebiotic β glucan and mannan on the performance and characteristics of broilers carcasses and verified that all growth promoters significantly increased carcass yield when compared to control. Domingues et al (2014) evaluated the effectiveness of using the Bacillus subitilis probiotic on the animal performance, carcass yield and parts of the carcass of broiler chickens at different stages of the breeding and also did not observe significant differences (p > 0.05) among treatments Santos Júnior, Ferket, Grimes and Edens (2004) verified that birds which were supplemented with symbiotic and antibiotic presented higher yield of thigh in comparison to the other treatments and suggested that the result was due to a greater deposition of nutrients in relation to the other treatments with consequences in the highest rate of growth and high rates of protein retention.…”

Section: Resultssupporting

confidence: 72%

<b>Performance and carcass yield of female broilers fed with diets containing probiotics and symbiotics as an alternative to growth enhancers

Silva

Machado

Freitas

et al. 2018

Acta Sci. Anim. Sci.

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ABSTRACT. An experiment was carried out with female broilers, aiming to evaluate the effect of using probiotics and symbiotics on growth performance and yield of carcasses and of the main commercial cuts and edible viscera. A total of 720 one-day-old Cobb chicks, distributed in a completely randomized experimental design with four treatments and six replicates of 30 birds each at a stocking density of 10 birds per square meter (m 2 ). At 42 days old two broilers of each experimental unit were sacrificed to evaluate the carcass yield and its parts. The carcass yield was not affected by the inclusion of probiotics and symbiotics in the diet being equivalent to the antibiotic group. No significant difference was observed among the treatments, even in the controls that did not receive any additive factor. All the performance parameters were similar for the four treatments, with the exception of weight gain, that was significantly lower in probiotic treatment. It was concluded that these additives are important alternative to replace antibiotics as growth enhancers, which have already been banned in many countries.Keywords: poultry farming; additions; performance.Desempenho e rendimento de carcaças de frangos de corte fêmeas alimentados com dietas contendo probióticos e simbióticos como alternativa aos melhoradores de crescimento RESUMO. Foi realizado um experimento com frangos de corte fêmeas, objetivando-se avaliar o efeito da utilização de probióticos e simbióticos sobre o desempenho e rendimento de carcaça e dos principais cortes comerciais e vísceras comestíveis destes animais. Foram utilizados 720 pintos de um dia de idade da linhagem Cobb, distribuídos em um delineamento experimental inteiramente casualizado, com quatro tratamentos e seis repetições de 30 aves cada em uma densidade de 10 aves/metro quadrado (m 2 ). Aos 42 dias de idade foram abatidos dois frangos por repetição, para a avaliação do rendimento de carcaça e suas partes. A inclusão de probióticos e simbióticos na ração não proporcionou diferença significativa no rendimento de carcaça e suas partes sendo equivalente ao tratamento com antibióticos. Não foi observada diferença significativa entre os tratamentos, inclusive nos controles que não receberam qualquer fator aditivo. Da mesma forma os demais parâmetros de desempenho foram equivalentes para os quatro tratamentos, com exceção do ganho de peso, que foi significativamente menor no tratamento probiótico. Conclui-se que esses aditivos são uma alternativa importante na substituição dos antibióticos como melhoradores de crescimento, os quais já foram banidos em muitos países.

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“…Similarly, Mountzouris et al (2007) reported that the overall FCR of probiotic-fed broilers was not different from those fed an antibiotic. Both Rostagno et al (2006) and Mokhtari et al (2010)compared the efficacy of the same B. subtilis-based probiotic evaluated in the present experiment with the antibiotic avilamycin, and concluded that the broilers fed the probiotic presented similar performance than those fed the antibiotic.…”

Section: Effects Of the Dietary Inclusion Of A Probiotic A Prebioticmentioning

confidence: 99%

Effects of the Dietary Inclusion of a Probiotic, a Prebiotic or their Combinations on the Growth Performance of Broiler Chickens

Murshed

Abudabos

2015

Rev. Bras. Cienc. Avic.

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A total of 350-one-day old chicks were placed in 70 cages, with 14 cages per treatment. The following five treatment diets were fed for 14 days: T1 = non-supplemented, control diet (CONT); T2 = diet with antimicrobial growth promoter (AGP); T3 = diet with a probiotic (PROB); T4 = diet with a prebiotic(PREB), and T5 = diet with the probiotic and the prebiotic (SYM). The growth experiment was carried out from 1 to 14 days of age. Feed and water were provided ad libitum and birds were maintained at 24-h light schedule. Diets were formulated to contain 3000 kcalME/kg and 21.5% crude protein, and the test materials were added on top. The cumulative results of1 to 14 days of age revealed that broiler fed the AGP and PREB diets presented the highest BWG (305.5 and 297.3 g, respectively), while those fed the CONT diet had the lowest BWG (273.2 g) (p<0.05). On the other hand, the best FCR was obtained in broilers AGP and PROB (1.296 and 1.299 g:g, respectively), while chicks on the CONT and SYM diet had the worst FCR (1.423 and 1.372 g:g, respectively) (p<0.01). The results showed broilers fed the non-supplemented diet consistently presented poor performance. It was concluded that PROB or PREB can serve as alternatives to antibiotic in broiler starter feeds, with no performance impairment.

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The Effects of Different Growth Promoters on Performance and Carcass Characteristics of Broiler Chickens

Cited by 26 publications

References 17 publications

Effects of dietary addition of synbiotic on the performance, carcass traits, and serum parameters of Japanese quails

Effects of dietary addition of synbiotic on the performance, carcass traits, and serum parameters of Japanese quails

<b>Performance and carcass yield of female broilers fed with diets containing probiotics and symbiotics as an alternative to growth enhancers

Effects of the Dietary Inclusion of a Probiotic, a Prebiotic or their Combinations on the Growth Performance of Broiler Chickens

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