Effect of probiotics, &lt;i&gt;Saccharomyces&lt;/i&gt; spp.Kb-5 and Kb-8, in diets on growth performance and cholesterol levels in ducks

I.G.N.G Bidura,N.W Siti,I.B.G Partama

doi:10.4314/sajas.v49i2.2

Abstract

The study was conducted to determine the effect of the probiotics, Saccharomyces spp.Kb-5 and Saccharomyces spp.Kb-8, on growth performance, carcass characteristics, serum and meat cholesterol levels in ducks. Two hundred and forty 1-day-old healthy male ducks were randomly allocated to four treatment groups: A) basal diet (control), B) basal diet + 0.20% Saccharomyces spp.Kb-5, C) basal diet + 0.20% Saccharomyces spp.Kb-8, and D) basal diet + 0.10% Saccharomyces spp.Kb-5 + 0.10% Saccharomyces spp.Kb-8. Growth performance, carcass characteristics, and serum and meat cholesterol levels were determined when the ducks were 56 days old. Saccharomyces spp.Kb-5 and Saccharomyces spp.Kb-8, and the incombination, increased bodyweight gains, feed efficiencies and carcass weight significantly, but not affect the amount of feed consumed. The administration of Saccharomyces spp. results in significant lower serum and meat cholesterol concentrations compared to the control. It was concluded that the addition of Saccharomyces s pp.Kb-5 and Saccharomyces spp.Kb-8, and the incombination, in the diet increased growth performances, feed efficiency and carcass weight, and decreased serum and meat cholesterol concentrations in male ducklings. Keywords: carcass characteristics, digestibility, feed efficiencies

Highlights

The manipulation of the gut function and microbial habitat of domestic animals with feed additives has been recognized as an important tool for improving growth performance and feed efficiency
No significant differences in the feed consumption and feed digestibility were observed among the dietary groups
There were no significant differences in feed consumption during the experiment

Summary

Introduction

The manipulation of the gut function and microbial habitat of domestic animals with feed additives has been recognized as an important tool for improving growth performance and feed efficiency. Antibiotics have been used widely as feed additives for broiler chickens, owing to their ability to manipulate the intestinal microbial population, to improve feed conversion ratio (FCR) and to promote growth. There is growing concern about possible antibiotic residue effects and the development of drug-resistant bacteria, owing to the continuous feeding of antibiotics to livestock at sub-therapeutic levels (Chen et al, 2017). Feed additives such as live probiotics can balance microorganism populations in the digestive tract, improve feed efficiency by >15% and provide economic benefits for farmers that raise starter ducks (Zurmiati et al, 2017). Supplementation of probiotics (Bacillus species and Saccharomyces boulardii) at 150 g/ton to replace antibiotics in broiler feed as a growth promoter, was found to enhance immune system responses and induce beneficial modulations in caecal microflora in broiler chickens (Manafi et al, 2018)

Methods

Results

Conclusion