The effect of β-mannanase and β-glucanase on small intestine morphology in male broilers fed diets containing various levels of metabolizable energy

Karimi, K; Zhandi, Mahdi

doi:10.1080/09712119.2014.978770

Cited by 15 publications

(13 citation statements)

References 27 publications

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“…However, no variation was observed in crypt depth. These results are contrary to data reported by Karimi and Zhandi (2015), who observed a greater crypt depth in duodenum, jejunum, and ileum of broiler chickens fed a barley-based diet supplemented with b-mannanase. However, they also reported that the b-mannanase improved villus height in duodenum and ileum, which is in agreement with the result of the present study.…”

Section: Discussioncontrasting

confidence: 99%

A dose–response study to evaluate the effects of pH-stable β-mannanase derived from Trichoderma citrinoviride on growth performance, nutrient retention, and intestine morphology in broiler chickens

Hosseindoust

Lee²,

Nho³

et al. 2018

Italian Journal of Animal Science

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Section: Discussioncontrasting

confidence: 99%

A dose–response study to evaluate the effects of pH-stable β-mannanase derived from Trichoderma citrinoviride on growth performance, nutrient retention, and intestine morphology in broiler chickens

Hosseindoust

Lee²,

Nho³

et al. 2018

Italian Journal of Animal Science

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“…Our results agree with Wang et al (2015), who did not observe a significant difference in the histomorphological characteristics of broiler chickens due to lowering dietary energy by 100 kcal/kg, and Wickramasuriya et al (2019), who did not observe a significant impact on intestinal histomorphology by lowering dietary energy or adding enzymes. On the other hand, Karimi and Zhandi (2015) reported significant improvements in the intestinal histomorphological parameters of broiler chickens due to B-glucanase and/or B-mannanase supplementations. The reported improvement in body weight gain and FCR due to enzyme supplementation in the present study may not be related to any improvement in intestinal morphology.…”

Section: Discussionmentioning

confidence: 96%

Effect of a multicarbohydrase supplementation to diets varying in metabolisable energy level on the performance, carcase traits, caecal microbiota, intestinal morphology, and nutrient digestibility in broiler chickens

Attia

Metwally

Beheiry

et al. 2021

Italian Journal of Animal Science

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This trial was conducted to investigate the effects of multi-carbohydrase supplementation on the performance, carcase traits, intestinal histomorphology, caecal microbiota and nutrient digestibility of broiler chickens fed diets with varying energy levels. A total of 400-day-old male chicks were allocated into eight dietary treatments in a 4 Â 2 factorial arrangement with 5 replicates per treatment. There were 4 dietary energy levels (the standard breed recommendation and reductions of 50, 100 and 150 kcal/kg from the standard) with or without multi-carbohydrase supplementation. Reducing the energy level by 50 kcal/kg did not significantly impact the measured parameters compared to the standard recommendation while it is reducing by 100 and 150 kcal/kg resulted in significant decreases in the body weight (BW) by levels up to 4.41% and a significant increase in the feed conversion ratio (FCR) by levels up to 4.67%. Enzyme supplementation significantly improved the BW and FCR by 3.24% and 2.95%, respectively. Dietary energy lowered by 100-150 kcal/kg resulted in a significant decrease in the dressing (up to 2.42%), breast yield (up to 2.82%), fat pads (up to 8.72%), liver (up to 6.30%) percentages and coliform count (up to 28.5%). The digestibility of dry matter, crude protein, ether extract and gross energy was increased due to enzyme supplementation by 4.15, 3.50, 3.35 and 3.72%, respectively. In conclusion, broiler performance and carcase traits can be negatively impacted if the energy density is reduced by 100-150 kcal/kg diet. Enzyme supplementation can improve the performance and nutrient digestibility regardless of the dietary energy level. HIGHLIGHTSThe metabolisable energy level can be reduced by 50 kcal/kg diets compared to the breed recommendation. Decreasing the energy level by 100 or 150 kcal/kg diet compared to breed recommendations resulted in a negative impact on the performance. Multicarbohydrase blend supplementation resulted in significant improvements in the performance and nutrient digestibility.

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“…From these pictures, individual lengths and widths were taken of intact villi using ImageJ (NIH, Betheseda, MD, USA). Length and width data were measured according to Karimi and Zhandi [17] in the three different segments of the intestine; proximal, middle, and distal. Villi length was measured from the tip of the villus to the luminal surface, and villi width was measured across the base of the villus at the luminal surface.…”

Section: Plos Onementioning

confidence: 99%

Nutritional programming improves dietary plant protein utilization in zebrafish Danio rerio

et al. 2020

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Nutritional Programming (NP) has been shown to counteract the negative effects of dietary plant protein (PP) by introducing PP at an early age towards enhancement of PP utilization during later life stages. This study explored the effect of NP and its induction time on growth, expression of appetite-stimulating hormones, and any morphological changes in the gut possibly responsible for improved dietary PP utilization. At 3 days post-hatch (dph) zebrafish were distributed into 12 (3 L) tanks, 100 larvae per tank. This study included four groups: 1) The control (NP-FM) group received fishmeal (FM)-based diet from 13-36 dph and was challenged with PP-based diet during 36-66 dph; 2) The NP-PP group received NP with dietary PP in larval stage via live food enrichment during 3-13 dph followed by FM diet during 13-36 dph and PP diet during 36-66 dph; 3) The T-NP group received NP between 13-23 dph through PP diet followed by FM diet during 23-36 dph and PP diet during 36-66 dph; and 4) The PP group received PP diet from 13-66 dph. During the PP challenge the T-NP group achieved the highest weight gain compared to control and PP. Ghrelin expression in the brain was higher in T-NP compared to NP-FM and NP-PP, while in the gut it was reduced in both NP-PP and T-NP groups. Cholecystokinin expression showed an opposite trend to ghrelin. The brain neuropeptide Y expression was lower in NP-PP compared to PP but not different with NP-FM and T-NP groups. The highest villus length to width ratio in the middle intestine was found in T-NP compared to all other groups. The study suggests that NP induced during juvenile stages improves zebrafish growth and affects digestive hormone regulation and morphology of the intestinal lining-possible mechanisms behind the improved PP utilization in pre-adult zebrafish stages.

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The effect of β-mannanase and β-glucanase on small intestine morphology in male broilers fed diets containing various levels of metabolizable energy

Cited by 15 publications

References 27 publications

A dose–response study to evaluate the effects of pH-stable β-mannanase derived from Trichoderma citrinoviride on growth performance, nutrient retention, and intestine morphology in broiler chickens

A dose–response study to evaluate the effects of pH-stable β-mannanase derived from Trichoderma citrinoviride on growth performance, nutrient retention, and intestine morphology in broiler chickens

Effect of a multicarbohydrase supplementation to diets varying in metabolisable energy level on the performance, carcase traits, caecal microbiota, intestinal morphology, and nutrient digestibility in broiler chickens

Nutritional programming improves dietary plant protein utilization in zebrafish Danio rerio

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