Growth, carcass characteristics, meat quality, and microbial aspects of growing quail fed diets enriched with two different types of probiotics (Bacillus toyonensis and Bifidobacterium bifidum)

Abstract

The present investigation aimed to explore the impact of dietary graded levels of 2 types of probiotic bacteria ( Bacillus toyonensis [ BT ] and Bifidobacterium bifidum [ BB ]) on growth, carcass traits, meat quality, and bacteriology of growing Japanese quail reared under the cage system. One thousand three hundred sixty Japanese quail day-old chicks were randomly divided into 10 groups (8 replicates each). Birds were fed a basal diet (control, T1) and the basal diet plus 0.05, 0.075, 0.10, and 0.125% BT (T2, T3, T4, and T5, respectively), 0.10% BB (T6), and the same previous doses of BT plus 0.05% BB (T7, T8, T9, and T10, respectively). Results showed a significant ( P < 0.001) increase in final BW and weight gain because of probiotic supplementation (except T2 for weight gain). Both feed intake and feed conversion ratio did not differ during the overall experimental period (1–42 D of age) except feed intake that was reduced in T2 and increased in T5 and T9 groups. All carcass traits studied were significantly ( P < 0.01) affected by probiotics, and the combination between BT and BB in group T8 increased all studied parameters as compared with the other treatment groups. The quail meat color of redness a∗ and L∗ values, thiobarbituric content, cooking loss, proteolysis, and total coliform were decreased ( P < 0.001) by probiotic treatment. In general, supplementing BT, BB, or their combination to the basal diet delayed the proliferation of pathogenic bacteria in the diet and intestine. Using BT and BB as feed supplements enhanced growth performance and meat quality of quails as well as diminished pathogenic bacteria proliferation in their diet and intestine. As per our results, we can recommend the application of T5 and T8 to T10 levels for the best performance, carcass traits, and meat quality of growing quails.

Productive performance, fertility and hatchability, blood indices and gut microbial load in laying quails as affected by two types of probiotic bacteria

“…This cell adhesion ability has been regarded as one of the critical screening standards for active probiotic strains ( Jha et al, 2020 ). Our findings are in agreement with that of Abou-Kassem et al (2021) who revealed that increasing levels of B1 or B2 reduced microorganisms proliferation. Also, supplementing the quail diet with B1 showed a strong antibacterial activity against Gram-positive and Gram-negative bacteria.…”

“…For mortality, our results were in agreement with Abou-Kassem et al (2021) . They found that the mortality rate of Japanese quails was not affected by probiotic supplementation (B1 or/with B2) compared to the control.…”

“…In agreement, Ayyat et al (2018) found that animals fed diets supplemented with selenium, baker’s yeast, probiotic (Bactocell) and mannan oligosaccharides had higher ( P < 0.001) values of live body weight compared to the control group. On the other hand, Zhang et al, 2013 , Abou-Kassem et al, 2021 reported that adding 10 10 colony forming units kg −1 probiotic to diets improved body weight gain. However, Naseem & King (2020) added different species of Lactobacillus ( L .…”

Effect of Feeding Wet Feed or Wet Feed Fermented by Bacillus licheniformis on Growth Performance, Histopathology and Growth and Lipid Metabolism Marker Genes in Broiler Chickens

“…Dietary fermentation with B. Licheniformis can increase organic acid concentrations, which reduces pH to almost 4, as shown in the present study and following Akinola et al (2015) and Canibe et al (2007) [ 6 , 38 ]. Due to the reduction in pH and the competitive exclusion mechanism, the growth of pathogens in the diet and in the gut is inhibited [ 1 , 39 , 40 ]. Gong et al (2018) reported that lipase, amylase, total protease and trypsin activities in the duodenal contents were enhanced when broilers were treated with B. Licheniformis [ 36 ].…”

Probiotics in poultry feed: A comprehensive review

“…Abou‐Kassem et al. (2020) also noticed that dietary supplementation of Bacillus toyonensis and B. bifidum delayed total fungi and total coliform proliferation in the diet and reduced caecal coliforms and E. coli populations as well.…”