The Effect of Mannanoligosaccharides, Bambermycins, and Virginiamycin on Performance of Large White Male Market Turkeys

Parks, C. W.; Grimes, J. L.; Ferket, P. R.; Fairchild, A. S.

doi:10.1093/ps/80.6.718

Cited by 82 publications

(48 citation statements)

References 25 publications

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“…Reference [4] assumed that there may be other mechanisms responsible for effects of yeast culture in monogastrics other than modulation of microbial ecology. Mannan-oligosaccharide and 1,3/1,6 β-glucan are components of the yeast cell wall that have been reported to modulate immunity [9], promote growth of intestinal microflora [10], and increase growth [11]. Yeast culture contains viable cells, cell wall components, metabolites, and the media on which the yeast cells were grown [12].…”

Section: Introductionmentioning

confidence: 99%

Effect of Dietary Yeast (Saccharomyces cerevisiae) Supplementation on Performance, Carcass Characteristics and Some Metabolic Responses of Broilers

Ahmed¹

2015

AVS

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Abstract:This study was conducted to evaluate the effect of feeding graded levels of yeast on broiler performance, carcass characteristics and some hematological indices. One day old Hubbard broiler chicks (n=160) were randomly allocated to five dietary treatments. Each treatment consisted of 4 replicates of 8 broilers each. The dietary treatments contained 0% yeast (Saccharomyces cerevisiae) as a negative control diet, 0% yeast + 30 ppm Oxytetracyline as a positive control, 1%, 2% and 3% yeast in the starter and finisher diets. During the experimental periods of 6 weeks, feed intake, body weight gain and feed conversion ratio values were calculated. At the end of the experimental period (6 weeks of age), some biochemical and hematological indices, carcass characteristics traits and internal organs weights were recorded. Growth performance parameters were significantly (P≤0.05) affected by experimental diets. Chicks fed either 0 or 3% yeast recorded the highest (P≤0.05) feed intake, however, the best (P≤0.05) body weight gain was obtained by birds fed 0 or 1% dietary yeast compared to the positive control diet. The highest (P≤0.05) feed conversion ratio was reported for birds fed the positive control diet and 3% dietary yeast compared to the negative control diet. The inclusion of different dietary treatments had no significant (P≥0.05) effects on dressing percentage, hot base and relative weights of heart, gizzard and abdominal fat. Nevertheless, birds fed 3% dietary yeast showed significant (P≤0.05) decrease in the relative weight of the liver compared to the negative control diet. Relative weights of breast and thigh were significantly (P≤0.05) higher in birds fed 1% yeast than those fed 3% yeast. There were linear decreases in serum cholesterol and albumin of broilers fed graded levels of dietary yeast. It is concluded that yeast can be included in broiler diet at 1% without detrimental effects on performance, and could therefore serve as a natural substitute for antibiotics.

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Section: Introductionmentioning

confidence: 99%

Effect of Dietary Yeast (Saccharomyces cerevisiae) Supplementation on Performance, Carcass Characteristics and Some Metabolic Responses of Broilers

Ahmed¹

2015

AVS

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“…The β-1, 3/1, 6-glucans present in YCW should be recognised as an immune modulator substance in animals. Because of these components, supplementation to poultry diets with YCW results in an improved immune system, body weight gain and feed conversion (Abel and Czop, 1992;Parks et al, 2001).…”

Section: Introductionmentioning

confidence: 99%

Use of yeast cell walls andYucca schidigeraextract in layer hens’ diets

Gürbüz

Balevi

Kurtoğlu

et al. 2011

Italian Journal of Animal Science

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This research was conducted to determine the impact of diet supplementation with yeast cell walls (YCW) and Yucca schidigera extract (YE) on performance, egg weight, specific gravity, body weight, and intestinal tissue histology in layer hens. White, 48-week-old, Hyline hybrid hens (n=320) were divided into four main groups, each comprising eight groups of 10 hens: (1) control, (2) 500 mg/kg YCW added, (3) 500 mg/kg YE added and (4) 250 mg/kg YE plus 2500 mg/kg YCW added. While the egg production and feed intake of the hens was significantly affected, overall feed efficiency, damaged-egg ratio, dirty-egg ratio, egg weight and specific gravity did not differ between the control group and the YCW, YE or YCW+YE groups. Final body weight was higher in the YCW, YE and YCW+YE groups than in the control group. There were differences in the width, muscle layer thickness and height/crypt depth ratio of the duodenal villus and the width of the ileal villus among the four groups. It can be concluded that YCW and YCW+YE supplementation for layer hens are beneficial for egg production.

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“…Oligosaccharides have been used as prebiotics to influence the composition of the bacterial populations in the large intestine of a number of animal species (Grizard et al, 1999;Rycroft et al, 2001). Previous reports suggest that mannose-oligosaccharide (MOS) supplementation resulted in improved production in terms of body weight gain and feed conversion (Parks et al, 2001) and significant improvement in antibody responses (Cotter et al, 2000). In the present experiment, the improvement of body weight (at the end of 7 th week) was +0.99% and the feed conversion ratio (3~7weeks) was -1.63% relative to the negative control and a distinct decrease in mortality was not observed.…”

Section: Discussionmentioning

confidence: 99%

Comparison of the effects of Chinese herbs, probiotics and prebiotics with those of antibiotics in diets on the performance of meat ducks

Wang¹,

Zhou²

2007

J. Anim. Feed Sci.

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This study was conducted to compare the effect of some additives on the performance of Pekin meat ducks. Three types of feed additives, Chinese herbs, probiotics and prebiotics, were supplemented separately to meat duck diets and compared with an antibiotic treatment group as well as with a group of non-supplemented birds. For a seven-week feeding trial, a total of 300 meat ducks were allotted to five treatments. The treatments were: non-supplemented, antibiotics, Chinese herbs, probiotics, and prebiotics. At the end of starter phase (weeks 0-2), the ducks on probiotics had the highest body weight (P<0.01), and during the last weeks (weeks 3-7) the ducks in all experimental groups grew faster than the negative controls (P<0.01). The feed conversion ratio (FCR) of the probiotics group was significantly lower than in the other groups during the whole experiment. Mortality was lowest in the Chinese herbs and antibiotics groups (0%). The carcass characteristics study showed that every trait measured in this experiment was similar (P>0.05) in all groups. Overall, it can be inferred that supplementation of Chinese herbs, probiotics, prebiotics did not negatively affect meat duck performance and that these feed additives can replace antibiotics in Pekin meat duck diets.

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The Effect of Mannanoligosaccharides, Bambermycins, and Virginiamycin on Performance of Large White Male Market Turkeys

Cited by 82 publications

References 25 publications

Effect of Dietary Yeast (Saccharomyces cerevisiae) Supplementation on Performance, Carcass Characteristics and Some Metabolic Responses of Broilers

Effect of Dietary Yeast (Saccharomyces cerevisiae) Supplementation on Performance, Carcass Characteristics and Some Metabolic Responses of Broilers

Use of yeast cell walls andYucca schidigeraextract in layer hens’ diets

Comparison of the effects of Chinese herbs, probiotics and prebiotics with those of antibiotics in diets on the performance of meat ducks

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