Effects of Pelleting and Particle Size on Utilization of Roasted Soybeans by Broilers

Mitchell, R. J.; Waldroup, P. W.; Hillard, C. M.; Hazen, Kenny R.

doi:10.3382/ps.0510506

Cited by 15 publications

(4 citation statements)

References 8 publications

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“…The observed tendency for higher AME values of diets and soyabeans, accompanied also by improved fat digestibility, when broilers were fed pelleted as opposed to meal diets is consistent with earlier reports 10. 21–24 This observation further confirms the need for combined thermal and mechanical processes other than grinding, such as pelleting, in rupturing cell walls and making encapsulated nutrients of feedstuffs such as soyabeans more accessible to digestive enzymes, as reported recently for pigs 7…”

Section: Discussionsupporting

confidence: 91%

Utilisation of two varieties of full-fat and simulated soyabeans in meal and pelleted diets by broiler chickens

Agunbiade

2000

J. Sci. Food Agric.

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Full‐fat soyabeans (FFSB) (Glycine max) of two varieties, TGX 1440/E and M‐351, and recombined soyabean meal and oil (SBMO, simulated soyabeans) along with a basal diet were evaluated in a growth and digestibility study designed to examine energy and nutrient digestibility and growth performance of broiler chickens fed the soyabean diets presented as meal or pellets. The soyabean products were incorporated into the basal diet in a 40:60 ratio (product/basal). The resulting eight experimental diets were assessed in a growth trial covering the starter to the finisher phase (1–8 weeks) of the broiler rearing period, during which daily weight gain, feed consumption and feed conversion efficiency were measured. Two digestibility trials were conducted at the starter (1.5–2 weeks) and finisher (7.5–8 weeks) phases of the broiler rearing. Apparent metabolisable energy (AME) and apparent fat (AFD), nitrogen (AND) and dry matter (ADD) digestibilities of diets were determined. Data on carcass and gut measurements were also obtained. The bird rearing phase had a significant (P ≤ 0.001) effect on energy and nutrient digestibility of diets and soyabean products, with the finisher broilers yielding higher values. Mean AME values for FFSB were 16.1 vs 13.6 MJ kg−1 DM for the finisher and starter broilers. Pelleting of diets improved AFD (P ≤ 0.001) and AME (P ≤ 0.10). Significant interaction (P ≤ 0.01) between diet and feed form resulted in improvement in fat digestibility of pelleted FFSB diets but not that of SBMO diets. Carcass fat (P ≤ 0.01) and breast weight (P ≤ 0.05) were increased and gizzard weight decreased (P ≤ 0.01) in birds given the pelleted diets compared with those on meal diets. Birds fed the TGX FFSB diets had significantly lower dietary fat and nitrogen digestibilities and heavier weight of the small intestine than those on the M‐351 diets, thus suggesting varietal differences in the structure and nutritional value of soyabeans. © 2000 Society of Chemical Industry

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Section: Discussionsupporting

confidence: 91%

Utilisation of two varieties of full-fat and simulated soyabeans in meal and pelleted diets by broiler chickens

Agunbiade

2000

J. Sci. Food Agric.

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“…In the present study, three-way interaction among the main effects on d 14 and 21 for feed intake shows that fine SH at the lower level had the heaviest weight gain, whereas the lowest weight gain was for the group fed coarse and high levels of CL. In chicks, it has been clearly demonstrated that nutrient digestibility increases from 58% to up to 90% when coarse particles are ground to finer particles ( Mitchell et al., 1972 ). It is important to highlight that this is true for nutrient-containing feedstuffs.…”

Section: Discussionmentioning

confidence: 99%

Effects of fiber type, particle size, and inclusion level on the growth performance, digestive organ growth, intestinal morphology, intestinal viscosity, and gene expression of broilers

Tejeda

Kim

2021

Poultry Science

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The aim of this study was to evaluate the effect fiber type, particle size, and inclusion level on the performance parameters, intestinal development and gene expression in broiler chickens. A total of 648 one-day old Cobb male broilers were randomly assigned to a control diet and 8 other dietary treatments divided in 2 fiber types (cellulose vs. soyhulls), 2 particle sizes (100 and 600 µm), and 2 inclusion levels (4 and 8% crude fiber). Birds were reared to 21 days of age in battery cages (n = 6 replicates). Growth performance parameters and intestinal viscosity were measured on da 7, 14, and 21. On d 14 and 21, digestive organ weights were recorded for analyses of organ growth. On d 21, intestinal samples were taken for analyses of histology, and jejunal mucosas were collected for analyses of nutrient transporters. Data were analyzed as a 2 × 2 × 2 factorial design using JMP 2021. Treatments were compared against the control group using one-way analysis of variance, whereas the main effect interactions were evaluated as a factorial excluding the control group to be able to assess the effect of the independent variables without the variability introduced by the control group. The groups fed 8% crude fiber from cellulose (8% CL ) had the lowest weight gain regardless of the particle size ( P < 0.01). The control group had the highest feed intake among the treatments ( P < 0.01). The groups fed 8% crude fiber from soyhulls (8% SH ) with a coarse particle size had the heaviest relative gizzard weight among the treatments ( P = 0.045). The groups fed 8% SH had the heaviest small intestine weights regardless of the particle size ( P = 0.009). No differences were observed in the relative weights of the ceca. The highest viscosity was observed in the group fed 8% SH with a fine particle size ( P < 0.001). The group fed 4% SH with a coarse particle size had the longest duodenal villus ( P < 0.001). The shortest jejunal villus height was observed in the group fed 8% CL with a fine particle size ( P < 0.001). Ileal villus was highest in the groups fed high CL levels regardless of the particle size ( P < 0.001). The highest digestibility of dry matter was observed in the group 4% SH with fine particle ( P = 0.017). The group 4% CL with fine particle had the highest digestibility of crude protein ( P = 0.033). The highest expression of peptide transporter 1 was observed in the group fed 8% CL with a coarse particle size ( P = 0.008). In conclusion, fiber type, particle size, and inclusion levels are important factors in the regulation of intestinal morphology, viscosity, nutrient transporters, and growth performance.

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“…The positive effect of using pelleted diets both in management and feeding value has been well documented (Callet, 1965;Thomas and Van der Poel, 1996;McCracken, 2002). There is no doubt that the body weight and feed intake of broilers fed a pelleted diet are improved (Mitchell et al, 1972). Improvements in the body weight of birds fed a pelleted diet are thought to be realised through three main mechanisms;…”

Section: Pelleting and Crumblingmentioning

confidence: 98%

Feeding value of copra meal for broilers

Sundu

Kumar

Dingle

2009

World's Poultry Science Journal

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Effects of Pelleting and Particle Size on Utilization of Roasted Soybeans by Broilers

Cited by 15 publications

References 8 publications

Utilisation of two varieties of full-fat and simulated soyabeans in meal and pelleted diets by broiler chickens

Utilisation of two varieties of full-fat and simulated soyabeans in meal and pelleted diets by broiler chickens

Effects of fiber type, particle size, and inclusion level on the growth performance, digestive organ growth, intestinal morphology, intestinal viscosity, and gene expression of broilers

Feeding value of copra meal for broilers

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