Influence of feed form and particle size on performance, nutrient utilisation, and gastrointestinal tract development and morphometry in broiler starters fed maize-based diets

Naderinejad, Saeed; Zaefarian, F.; Abdollahi, M.R.; Hassanabadi, Ahmad; Kermanshahi, Hassan; Ravindran, V.

doi:10.1016/j.anifeedsci.2016.02.012

Animal Feed Science and Technology

2016

DOI: 10.1016/j.anifeedsci.2016.02.012

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Influence of feed form and particle size on performance, nutrient utilisation, and gastrointestinal tract development and morphometry in broiler starters fed maize-based diets

Saeed Naderinejad

F. Zaefarian

M.R. Abdollahi

et al.

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Cited by 67 publications

(73 citation statements)

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“…The lack of gizzard pH response to particle size in mash diets is in agreement with the findings by Charbeneau and Roberson (2004), Jacobs et al (2010) and Singh et al (2014). Naderinejad et al (2016) found that, although pelleting reduced the proportion of coarse particles, it seemed that a minimum of 40 to 60 g/kg coarse particles of >2 mm was sufficient to stimulate secretion of hydrochloric acid and reduce the gizzard pH to the same level as mash-fed birds.…”

supporting

confidence: 80%

“…Higher HCl production as a result of longer retention time of digesta in the gizzard might be the reason for the reduced gizzard pH. However, Naderinejad et al (2015) reported that gizzard pH was responsive to particle size only in pelleted maize diets. The lack of gizzard pH response to particle size in mash diets is in agreement with the findings by Charbeneau and Roberson (2004), Jacobs et al (2010) and Singh et al (2014).…”

mentioning

confidence: 83%

“…The crop is moderately acidic (5.5), the proventriculus and gizzard are acidic (2.5-3.5) and the intestine is moderately neutral to moderately alkaline (5.0-7.5). It has been shown that gizzard pH is relatively higher with pelleted diets when compared to mash diets (Engberg et al, 2002;Huang et al, 2006;Frikha et al, 2009: Naderinejad et al, 2016. Recently, Liu et al (2015) reported a negative correlation (r=-0.45) between the relative gizzard weight and gizzard pH and suggested that the consequence of heavier gizzard weight goes beyond grinding activity.…”

mentioning

confidence: 98%

“…72, June 2016 enhanced mechanical grinding activity (Dahlke et al, 2003;Parsons et al, 2006). Naderinejad et al (2015) reported that, regardless of feed form, medium and coarse grinding of maize increased the gizzard weight compared to fine grinding. In contrast, Xu et al (2015c) reported that relative gizzard weight was not affected by percentage of coarse maize (up to 500 g/kg) in crumble diet, while it increased in a linear manner with increasing of coarse maize inclusion in the mash diet.…”

mentioning

confidence: 99%

“…Naderinejad et al (2016) reported that coarse grinding of maize, through enhanced gizzard development and functionality, was beneficial to nutrient and energy utilisation and growth performance in broilers fed pelleted diets. Amerah et al (2007b) concluded that wheat particle size was more critical in mash than in pelleted or crumble diets.…”

mentioning

confidence: 99%

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Particle size and feed form in broiler diets: impact on gastrointestinal tract development and gut health

Zaefarian

Abdollahi

Ravindran

2016

World's Poultry Science Journal

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The importance of feed particle size, as a tool to optimise the utilisation of feed and improve production efficiency in broilers, has attracted increased attention in recent years. Particle size reduction is widely believed to enhance the access of digestive enzymes to substrates because of the increased surface area of feed particles. Fine particles can negatively affect the development of fore-gut (proventriculus and gizzard), which plays an important role in intestinal health and nutrient utilisation. A well-developed fore-gut can be achieved by feeding coarse particles which is associated with improvements in gut motility and health. However, the results of studies considering the effect of feed particle size on upper gastrointestinal tract development have been inconclusive, because of the confounding effects of feed form (mash vs. pellets). Feed particle size influences the development of gastrointestinal tract and bird performance to a greater extent when the broilers are fed mash than pelleted diets. Particle size-reducing properties of the pelleting process may result in suboptimal gizzard development and changes in the intestinal morphology and microbiota profile.

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supporting

confidence: 80%

mentioning

confidence: 83%

mentioning

confidence: 98%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Particle size and feed form in broiler diets: impact on gastrointestinal tract development and gut health

Zaefarian

Abdollahi

Ravindran

2016

World's Poultry Science Journal

Self Cite

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Macro‐ and microstructures of the digestive tract in the Eurasian collared dove, Streptopelia decaocto (Frivaldszky 1838): Adaptive interplay between structure and dietary niche

El‐Mansi

El-Bealy

Rady

et al. 2021

Microscopy Res & Technique

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We describe the functional morphology of the digestive tract of the Eurasian collared dove, Streptopelia decaocto using anatomical, morphometric, histological, histochemical, and ultrastructure techniques, and relate our findings to the species' dietary niche. Our results revealed that the esophagus is displaced on both sides of the neck and has highly folded tunica mucosa, which confer greater elasticity for efficient swallowing and passage of food to the crop. The proventriculus is delicate and its mucosal layer contains polymorphic glands with dense profound and superficial secretory units that open to the luminal surface by gastric pores. The ventriculus is biconvex and lined with a keratinized koilin membrane. The tubular glands within the mucosal lining include the isthmus, the neck, and the basal segment that comprise chief and basal cells with prominent nuclei. At the cuticle-mucosal interface, pyramidal vertical rodlets of the cuticle are secreted and superficially covered by a thin film of a horizontal matrix. The mucosa of the ileum form pyramidal villi that are oriented perpendicularly to the central lumen. Enterocytes infiltrated with goblet cells make up the epithelial lining of the villi. There are subtle differences in the thicknesses of corresponding tunics together with histochemical reactions of alcian blue (AB) and Masson-Goldner trichrome (MT) for their microstructures. Overall, our findings reveal remarkable convergence of both macro-and microstructures in S. decaocto to other granivorous species, and offer further evidence of the close association between functional morphology and feeding style relative to food swallowing, digestion, and absorption.

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Insoluble fibre and enzyme supplementation in mash or pellets diets on growth performance, apparent ileal digestibility and intestinal morphology of broiler chickens fed barley containing diets

Pourazadi,

Salari,

Tabandeh

et al. 2024

Veterinary Medicine & Sci

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BackgroundEnzyme supplementation and the inclusion of fibre in the barley‐based diets have been some of the alternatives proposed to improve productivity in the absence of growth promoters.ObjectiveThis study was performed to investigate the effect of adding sunflower hulls (SFH), a multi‐enzyme carbohydrate, and feed forms (mash and pellet) on performance and some physiological parameters in broiler chickens fed barley containing diets.MethodsTreatments were two feed forms (mash vs. pelleted), and four diets consisted of a barley‐based diet (control, CTL) or test diets which contained either SFH at 30 g/kg, enzyme (ENZ; 0.2 g/kg) or combination of SFH and enzyme (SFH + ENZ).ResultsThe results showed that average daily feed intake and average daily gain were significantly increased in chickens that were fed ENZ (p < 0.05). The highest digestibility of ether extract (EE) was observed in the treatment containing SFH and SFH + ENZ (p < 0.05). The highest population of Lactobacillus spp. was observed in the treatment containing SFH (p < 0.05). The villus height and villus height to crypt depth ratios of duodenum and jejunum were significantly higher (p < 0.05) in broilers fed pellet diets compared to the mash.ConclusionIt can be concluded that pellet diets reduce digesta viscosity and harmful microorganisms (Escherichia coli), increase growth performance, and improve intestinal morphology in barley‐based diets. Moreover, SFH and ENZ had favourable effects on EE digestibility and caecal microbial population of broilers fed with barley containing diets.

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Influence of feed form and particle size on performance, nutrient utilisation, and gastrointestinal tract development and morphometry in broiler starters fed maize-based diets

Cited by 67 publications

References 54 publications

Particle size and feed form in broiler diets: impact on gastrointestinal tract development and gut health

Particle size and feed form in broiler diets: impact on gastrointestinal tract development and gut health

Macro‐ and microstructures of the digestive tract in the Eurasian collared dove, Streptopelia decaocto (Frivaldszky 1838): Adaptive interplay between structure and dietary niche

Insoluble fibre and enzyme supplementation in mash or pellets diets on growth performance, apparent ileal digestibility and intestinal morphology of broiler chickens fed barley containing diets

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