Effect of particle size of insoluble fibre on growth performance, apparent ileal digestibility and caecal microbial population in broiler chickens fed barley-containing diets

Pourazadi, Zeinab; Salari, Somayyeh; Tabandeh, Mohammad Reza; Abdollahi, M.R.

doi:10.1080/00071668.2020.1799329

Cited by 16 publications

(22 citation statements)

References 61 publications

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“…Inclusion of wheat bran showed no or negative effects on the growth performance in broiler starters ( Table 6 ). Our results agreed with many studies on wheat bran or other cereals [ 20 , 21 ]. However, a previous study [ 22 ] showed a conflicting result that supplementation of 3% wheat bran caused the ADG of broilers to increase by 4.8% in the starter phase when compared with the control diet.…”

Section: Discussionsupporting

confidence: 93%

Evaluating and predicting net energy value of wheat and wheat bran for broiler chickens

et al. 2022

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Objective: It is crucial to accurately determine the net energy (NE) values of feed ingredients because the NE system is expected to be applied to the formulation of broilers feed. The NE values of 5 wheat and 5 wheat brans were determined in 12-to 14-day old Arbor Acres (AA) broilers with substitution method and indirect calorimetry method.Methods: A total of 12 diets, including 2 reference diets (REF) and 10 test diets (5 wheat diets and 5 wheat bran diets) containing 30% of test ingredients, were randomly fed to 864 male AA birds with 6 replicates of 12 birds per treatment. These birds were used to determine metabolizable energy (ME) (8 birds per replicate) in the chicken house and NE (4 birds per replicate) in the chamber respectively at the same time. After a 4-d dietary and environment adaptation period, growth performance, energy values, energy balance and energy utilization were measured during the following 3 d. Multiple linear regression analyses were further performed to generate prediction equations for NE values based on the chemical components and ME values. The NE prediction equation were also validated on another wheat diet and another wheat bran diet with high correlation (r = 0.98, r = 0.75).Results: The NE values of 5 wheat and 5 wheat bran samples are 9.34, 10.02, 10.27, 11.33, and 10.49 MJ/kg, and 5.37, 5.17, 4.87, 5.06, and 4.88 MJ/kg DM, respectively. The equation with the best fit were NE = 1.968AME–0.411×ADF–14.227 (for wheat) and NE = –0.382×CF–0.362×CP–0.244×ADF+20.870 (for wheat bran).Conclusion: The mean NE values of wheat and wheat bran are 10.29 and 5.07 MJ/kg DM in AA broilers. The NE values of ingredients could be predicted by their chemical composition and energy value with good fitness.

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Section: Discussionsupporting

confidence: 93%

Evaluating and predicting net energy value of wheat and wheat bran for broiler chickens

et al. 2022

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“…The previous study on broilers has proved that the supplementation of insoluble ber can promote growth of broilers (Jiménez-Moreno et al 2016;Jiménez-Moreno et al 2019;Nassar et al 2019). The effects of ber on the growth performance of broilers have depended on several factors, including the ber resources (Tejeda and Kim 2020;Pourazadi et al 2020), addition level (Tejeda and Kim 2021), particle size (Tejeda and Kim 2021) and feeding stage (Berrocoso et al 2020). In our study, it was found that, the regulatory effect of MBP on the growth performance of broilers aged 24-45 d was not as good as that of young broilers aged 1-22 d (Dai et al 2022).…”

Section: Effects Of Mbp On Growth Performancementioning

confidence: 99%

“…It may affect the energy digestibility (Jiménez-Moreno et al 2016) and reduce the organic matter digestibility of broilers (Röhe et al 2020). However, some studies have proved that supplementation of IDF in a proper manner has also exhibited several advantages for promoting the growth of young broilers, such as increasing gizzard weight in young broilers, lowering gizzard pH (Jiménez-Moreno et al 2019), balancing bene cial gut bacteria (Pourazadi et al 2020), improving villus growth in jejunum (Sozcu 2019), and enhancing nutrient digestibility and utilization (Nassar et al 2019). These above reports have con rmed that the IDF raw material is bene cial to intestinal health and growth performance of broilers.…”

Section: Introductionmentioning

confidence: 99%

Micronized Bamboo Powder Affects the Growth Performance, Intestinal Development, Cecal Chyme Microflora and Metabolic Pathway of Broilers aged 24-45 days

Dai

Lin²,

Huang

et al. 2022

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Context.Our previous study has revealed that micronized bamboo powder (MBP) can promote the growth performance of broilers aged 1-22 days (d) by improving oxidation resistance, balancing intestinal microflora and regulating metabolic pathways. Aims. This study further evaluates the effects of MBP on broilers aged 24-45 d. Methods.In this experiment, eight hundred and eighty (880) slow-growing spotted-brown broilers aged 22 d were pre-fed for 2 days, and then randomly divided into two groups according to weight and gender. There were 8 replicates in each group and 55 broilers in each replicate. The trial lasted for 21 d. The broilers in the control group were fed with an antibiotic-free basal diet (denoted as Group D), and the broilers in the experimental group were supplemented with 1% MBP based on an antibiotic-free basal diet (denoted as Group F). Key results. For the growth performance, during 24-45 d, no significant difference is observed between Group F and the control group, in average daily gain, average daily feed intake, and the weight gain and feed consumption ratio (P>0.05). For intestinal development, the broilers in Group F exhibit a significantly higher organ index of the cecum, jejunum villus height, and ratio of villi to crypt, compared to the control group (P<0.05). For the cecal chyme microflora, the abundance ratio of Firmicutes is higher, while the abundance ratio of Bacterodies is relatively lower than that of the control group. The addition of MBP significantly up-regulates the expression abundance of p_Firmicutes, f_Alicyclobacillaceae, g_Acutalibacter, f_Peptococcaceae, f_Clostridiaceae, f_Bacillaceae, g_Enterococcus, f_Enterococcasea, whiledown-regulates the expression abundance of p_Bacteroidetes, f_Bacteroidaceae, g_Bacteroides, o_Bacteroidales and c_Bacteroidia (P<0.05). For the metabolic pathways, 66 different pathways are observed between Group F and control group, including Alanine, aspartic acid and glutamic acid metabolism, Butyric acid metabolism, Arginine synthesis, Linoleic acid metabolism and β-alanine metabolism. The correlation analysis reveals that Firmicutes in cecal chyme are significantly positively correlated with some fatty acids, including syringic acid, 3-methyl-2-oxovaleric acid, 3-(2-hydroxyphenyl) propanoic acid, and butyric acid (P < 0.05). And the Bacterodies are positively correlated with some amino acids, including L-Alanine, L-Threonine, 3-Methylthiopropionic acid and L-Glutamic acid (P<0.05). Conslusions. To sum up, adding 1%MBP to replace corn equivalently has no negative effect on the growth performance of broilers. This may be related to the fact that MBP can improve intestinal development, and increase the content of bacteria that promote fatty acid metabolism and fiber degradation. Implications.MBP can be used as beneficial fiber for broilers. It is necessary to further study the effects of MBP on amino acid metabolism by regulating the microflora structure in the chyme.

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“…Contrary to the present ndings, Sittiya et al (2020) and Gonzalez-Alvarado et al (2008), however, concluded that feeding 3% OH and RH as insoluble ber source reduced carcass weights in the broilers. Dietary inclusion of RH and WS, however, resulted in decreased carcass traits, which, in turn, may be associated with ber type, ash and lignin contents(Pourazadi et al 2020). The present ndings of intestinal lengths and weights in response to the feeding of different insoluble ber sources are in line with previous studies in broilers(Pourazadi et al 2020;Abdollahi et al 2018).…”

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confidence: 99%

“…Dietary inclusion of RH and WS, however, resulted in decreased carcass traits, which, in turn, may be associated with ber type, ash and lignin contents(Pourazadi et al 2020). The present ndings of intestinal lengths and weights in response to the feeding of different insoluble ber sources are in line with previous studies in broilers(Pourazadi et al 2020;Abdollahi et al 2018). These later authors reported non-signi cant effects on the inclusion of insoluble ber sources on lengths and weights of intestine in the broilers.…”

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confidence: 99%

Effects of insoluble fiber source on growth performance, foregut development, gut health, apparent ileal digestibility of nutrients and carcass traits in broilers

Rasool

Qaisrani

Khalique

et al. 2022

Preprint

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This study evaluated the influence of insoluble fiber source on growth performance and digestive traits of the broilers from 1 to 35 d of age. In total 180, day-old, straight run broilers (Ross 308) were randomly assigned to 5 dietary treatments having 6 replicates of 6 broilers each. The dietary treatments included a control diet, and the diets containing oat hulls, rice hulls, wood shavings and sugarcane bagasse at 3% inclusion level. Diets were offered in mesh form in starter, grower and finisher phases. Growth performance was higher (P < 0.05) in the broilers fed oat hulls diets compared to those fed rice hulls, sugarcane bagasse and wood shaving as insoluble fiber source and control. The broilers fed oat hulls diets had 4% greater dressed weight with giblet, 5% improved dressed weight without giblet, 4% higher breast yield and 15% increased leg quarter yield among other dietary treatments. Oat hulls and sugarcane bagasse based diets resulted in higher (P < 0.05) relative gizzard weight. The oat hulls diets increased 15%villus height, 11% reduced crypt depth and 34% improved villus height to crypt depth ratio than for the rice hulls or wood shaving birds, whereas those fed control or sugarcane bagasse being intermediate. Oat hulls supplementation resulted in higher (P < 0.05) apparent ileal digestibility of dry matter, crude protein and amino acids in broilers. Overall, oat hulls and sugarcane bagasse supplementation resulted in greater growth performance and carcass characteristics, improved gut morphology and a better nutrients digestibility in the broilers.

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Effect of particle size of insoluble fibre on growth performance, apparent ileal digestibility and caecal microbial population in broiler chickens fed barley-containing diets

Cited by 16 publications

References 61 publications

Evaluating and predicting net energy value of wheat and wheat bran for broiler chickens

Evaluating and predicting net energy value of wheat and wheat bran for broiler chickens

Micronized Bamboo Powder Affects the Growth Performance, Intestinal Development, Cecal Chyme Microflora and Metabolic Pathway of Broilers aged 24-45 days

Effects of insoluble fiber source on growth performance, foregut development, gut health, apparent ileal digestibility of nutrients and carcass traits in broilers

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