Thermal processing of corn and physical form of broiler diets

Massuquetto, Andréia; Durau, J. F.; Barrilli, L. N. E.; Santos, Ronan Omar Fernandes dos; Krabbe, Everton Luís; Maiorka, Alex

doi:10.1016/j.psj.2020.01.027

Cited by 13 publications

(3 citation statements)

References 36 publications

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“…Similarly, Rezaeipour and Gazani [ 32 ] found that different feed particle sizes did not affect the breast and thigh relative weights. Also, Massuquetto et al [ 33 ] reported that carcass yield, breast, thigh, and drumstick yields were not affected by the physical form of diet. Interestingly, the present work showed that finely ground corn grain inclusion in the broiler diet significantly decreased the abdominal fat pad in comparison to those fed diets containing coarsely ground corn.…”

Section: Discussionmentioning

confidence: 99%

The Interactive Impacts of Corn Particle Size and Conditioning Temperature on Performance, Carcass Traits, and Intestinal Morphology of Broiler Chickens

Ghasemi-Aghgonbad,

Olyayee,

Janmohammadi

et al. 2024

Animals

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This study aimed to investigate the interactions between corn particle size (PS) and conditioning temperature (CT) on the performance, carcass traits, intestinal morphology, and immune responses in broilers fed a corn-soybean meal-based diet. A total of 360 one-day-old male broiler chicks (Ross 308) were randomly allocated into six dietary treatments in a 2 × 3 factorial arrangement, consisting of two corn PS (finely ground with geometric mean diameter (GMD) of 357 µm (PSF) vs. coarsely ground corn with GMD of 737 µm (PSC), and three CT [unconditioned (CTU), conditioned at 75 °C (CT75) and 90 °C (CT90)]. Birds were accommodated in 30 pens with five replicates and 12 chicks per each pen. There was no interaction between corn PS and CT on the growth performance and immune response of broilers at any growth phases. However, during the starter (0–10 days) period, the average daily weight gain (ADWG) and feed conversion ratio (FCR) of PSF-fed birds were significantly improved compared to those fed PSC (p < 0.05). During the starter (0–10 days) and grower (11–24 days) periods, increasing the conditioning temperature of corn increased the ADWG, while in the starter phase only the CT75 caused a lower FCR (p < 0.05). Broilers fed PSF corn showed the lowest FCR during the finisher (25–42 days) period compared to those fed PSC (p < 0.05). Conditioning corn at 75 °C reduced FCR during the finisher (25–42 days) period compared to the birds fed CTU and CT90 corn (p < 0.05). In whole experimental periods (1–42 days), PSF and CT75 treatment increased the ADWG compared to the PSC and CTU (p < 0.05). The CT75 treatment improved primary total anti-sheep red blood cell (SRBCs) titer (IgT) and IgM and secondary IgT and IgG responses compared to the other experimental groups (CTU and CT90) (p < 0.05). No significant PS × CT interaction was found on the Newcastle disease (ND) antibody titer of broiler chickens (p > 0.05). Feeding CT75 corn reduced duodenum and jejunum relative lengths compared to the birds fed diets containing CTU corn. Significant PS × CT interactions (p < 0.05) were observed for villus height, villus height to crypt depth, crypt depth, muscle thickness, and absorption surface area of the jejunum. The highest carcass yield was observed in the PSF-CT75 group (p < 0.05). In conclusion, the use of finely ground corn (PSF) conditioned at 75 °C (CT75) was beneficial to growth performance, development of the digestive tract, jejunum histomorphometry and the immune responses of broilers.

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Section: Discussionmentioning

confidence: 99%

The Interactive Impacts of Corn Particle Size and Conditioning Temperature on Performance, Carcass Traits, and Intestinal Morphology of Broiler Chickens

Ghasemi-Aghgonbad,

Olyayee,

Janmohammadi

et al. 2024

Animals

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“…The usefulness of carbohydrase enzymes in corn-soy-based diets for broiler is still unclear (Rabello et al 2021). Massuquetto et al (2020) applied 84 C for 13 s for corn conditioning and 105 C for corn expansion. They found that DM digestibility increased in both processing methods compared with non-processed corn, which contradicts the results of this experiment.…”

Section: Nutrient Utilisationmentioning

confidence: 99%

“…Pelleting is the most common form of heat processing in broilers feed production (Massuquetto et al 2020). Many benefits that can be attributed to feed pelleting include improving nutrient availability, destroying inhibitors and toxins, facilitating the use of a wide range of raw materials in diet formulations, producing hygienic diet, and reducing feed wastage.…”

Section: Introductionmentioning

confidence: 99%

Influence of corn conditioning temperature and enzyme supplementation on growth performance, nutrient utilisation and intestine morphology of broilers fed mash corn-soy diets

Teymouri

Hassanabadi

2021

Italian Journal of Animal Science

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Two trials were conducted to investigate the effects of different corn conditioning temperature and enzyme supplementation on nutrient utilisation, growth performance, and small intestine morphology in broiler chickens. In trial one, nutrient utilisation were determined in basal diets. These diets contained unconditioned or conditioned corn (temperatures 55, 70 and 85 C) supplemented with enzyme (Rovabio V R ) at the levels of 0 and 0.5 g/kg. Total excreta collection was performed with 144 chicks in 8 treatments with 6 replicates and 3 birds each, during 7-9 d. In trial two, 576 day-old broilers were distributed in 8 treatments, 6 pens and 12 chicks each. Birds were fed with diets containing conditioned corn in aforementioned temperatures and enzyme levels. A completely randomised design with 4 Â 2 factorial arrangement was used in both trials. Conditioning of corn and enzyme supplementation had no significant effects on apparent metabolisable energy (AME) of corn and apparent total tract retention (ATTR) of corn nitrogen (N). In second trial, no significant differences were observed in growth performance of broilers during 1-24 d. Feed conversion ratio (FCR) in birds fed diets containing conditioned corn at 85 C was significantly higher than that of 55 and 70 C during 1-10 d. Corn conditioning significantly increased villus width (VW) and crypt depth (CD) but decreased VW:CD ratio. Enzyme supplementation increased jejunum villus height (VH), VW and ileal lactobacillus count and decreased pancreas weight at 24 d (p < .05). Generally, corn conditioning and enzyme supplementation did not significantly affect growth performance and carcase traits of broilers during 1-24 d, but improved histology and microbial population of small intestine. HIGHLIGHTSConditioning of corn used in mash diets of broiler chickens increased the population of bifidobacteria. Enzyme supplementation to the diets of broilers increased the height and width of intestinal villi. Enzyme supplementation to the diets of broilers decreased relative weight of pancreas.

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