Effect of antibiotic growth promoters on broiler performance, intestinal growth parameters, and quantitative morphology

Miles, R. D.; Butcher, Gary D.; Henry, P. R.; Littell, Ramon C.

doi:10.1093/ps/85.3.476

Cited by 273 publications

(174 citation statements)

References 31 publications

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“…But, as reported previously, narrow or thinner villous width, as observed in T1, does not necessarily mean that they are susceptible to breakage, resulting in contamination of carcasses during processing (Miles et al, 2006). In T1 birds, however, the antibiotic effect may not be ruled out in reducing villi properties.…”

Section: Resultsmentioning

confidence: 59%

“…In T1 birds, however, the antibiotic effect may not be ruled out in reducing villi properties. Miles et al (2006) reported the smallest total villous area and shortest villous height and crypt depth in the ileum of chicks that were supplemented with the antibiotic virginiamycin. On the other hand, M. oleifera leaves contain glutathione, a conjugate element of glutamate, the most abundant amino acid in blood, which plays a vital role in maintaining mucosal integrity (Rao & Samak, 2012).…”

Section: Resultsmentioning

confidence: 99%

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Intestinal morphology, digestive organ size and digesta pH of broiler chickens fed diets supplemented with or without <i>Moringa oleifera</i> leaf meal

Nkukwana¹,

Muchenje²,

Masika³

et al. 2015

SA J. An. Sci.

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The intestinal morphology and pH of digesta of broiler chickens at 35 days old were studied. Birds were reared on these dietary treatments (T). T1, positive control, contained 668 g salinomycin and 500 g zinc bacitracin per kg of feed. Treatments, T2, T3 and T4, contained graded levels of Moringa oleifera leaf meal (MOLM) per kg of feed, namely starter (1, 3, 5 g), grower (3, 9, 15 g) and finisher (5, 15, 25 g). T5 was a negative control (without supplementation). Birds were provided feed and water ad libitum. Birds in T3 had the highest proventriculus digesta pH, and T5 birds the lowest. Birds that were supplemented with MOLMand surprisingly those from the negative control -had significantly higher caecal digesta pH, while T1 had the highest ileal digesta pH. Duodenal villous length was longest in T2, and shortest in T4. Jejunal villous length was longest in T3 and shortest in T2 birds. T3 and T4 jejunal villi were widest, with T1 birds having the shortest. Ileal villous was longest in T2 and T5 birds, while T3 birds had the shortest. Duodenal surface area for absorption was larger in T2 and T5, and smaller in T4, while T3 had the largest ileal surface area, and T1 the smallest. The jejunal surface area was largest in T3 (53.2) and T4 (50.7), and smallest in T1 (25.0). The current results reveal a regulatory effect of MOLM on the gastrointestinal tract, which could be attributed to the coarseness of the diets, thus raising the pH and resulting in thicker digesta viscosity, which is a clear sign of a healthy gut. ______________________________________________________________________________________

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Section: Resultsmentioning

confidence: 59%

Section: Resultsmentioning

confidence: 99%

Intestinal morphology, digestive organ size and digesta pH of broiler chickens fed diets supplemented with or without <i>Moringa oleifera</i> leaf meal

Nkukwana¹,

Muchenje²,

Masika³

et al. 2015

SA J. An. Sci.

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“…Deeper crypts are indicative of rapid tissue turnover in order to permit renewal of villi and normal sloughing or pathogenic invasion resulting in inflammation (Miles et al, 2006). Long villi and shallow crypts provide a larger surface area for the absorption of nutrients and low renewal rate, allowing efficient enzyme production and maturation of the intestinal cells (Yang et al, 2009).…”

Section: Gut Morphologymentioning

confidence: 99%

Sodium butyrate in chicken nutrition: the dynamics of performance, gut microbiota, gut morphology, and immunity

Ahsan

Cengiz

Raza

et al. 2016

World's Poultry Science Journal

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The effect of sodium butyrate on various bodily parameters of broilers such as performance, gut microflora, gut morphology, and immunity is reviewed in order to highlight its importance as an alternative to antibiotic growth promoters. Sodium butyrate is used as a source of butyric acid, which is known for its beneficial effects in the gut in monogastrics. Sodium butyrate is available in uncoated and entericcoated forms protected with fat or fatty acid salts. Varying results in productive performance, gut microbes, and gut morphology have been reported in the literature in response to supplementation of broiler diets with uncoated and fatcoated types of sodium butyrate. However, sodium butyrate has shown pronounced effects on immunity of chickens that are not fully understood yet. Although there are contrasting results of sodium butyrate in chicken, further research is needed using the sodium butyrate coated with the salts of fatty acids.

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“…Benefits of the inclusion of AGP in broiler diets on live performance have long been demonstrated (Miles et al, 2006;Cervantes et al, 2008;Hossain et al, 2008;Demir et al, 2008;Vieira et al, 2010). The mechanism of action of these compounds, however, is not easily explained.…”

Section: Resultsmentioning

confidence: 99%

Reassessing flavophospholipol effects on broiler performance

et al. 2012

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-The objective of this study was to evaluate bird responses to flavophospholipol at higher doses than those recommended by the Brazilian legislation. A trial was conducted with 900 male broilers divided into five doses of flavophospholipol: 0, 2, 4, 8 and 16 mg/kg. The performance evaluation was conducted weekly until 42 days of age. The evaluated parameters were: weight gain, feed conversion corrected for mortality, feed intake and mortality. At the end of experimental period, birds supplemented with growth promoter differed from the negative control for weight gain and feed conversion in the period from 1 to 42 days. Body weight gain and feed conversion were significantly higher for birds fed 16 mg/kg of flavophospholipol, compared with treatment without the growth promoter in the period from 1 to 21 days. In the accumulated period from 22 to 42 days, all doses were different for the negative control for feed conversion and body weight gain. The performance improvement was maximized at the dosage of 10.1 mg/kg for feed conversion ratio and 10.9 mg/kg for body weight gain by regression analysis. Flavomycin can be used as a growth promoter to improve feed conversion ratio and body weight gain in broilers from 1 to 42 days of age.

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Effect of antibiotic growth promoters on broiler performance, intestinal growth parameters, and quantitative morphology

Cited by 273 publications

References 31 publications

Intestinal morphology, digestive organ size and digesta pH of broiler chickens fed diets supplemented with or without <i>Moringa oleifera</i> leaf meal

Intestinal morphology, digestive organ size and digesta pH of broiler chickens fed diets supplemented with or without <i>Moringa oleifera</i> leaf meal

Sodium butyrate in chicken nutrition: the dynamics of performance, gut microbiota, gut morphology, and immunity

Reassessing flavophospholipol effects on broiler performance

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