Optimum Processing for Soybean Meal Used in Broiler Diets

Waldroup, P. W.; Ramsey, B. E.; Hellwig, H.; Smith, N. K.

doi:10.3382/ps.0642314

Cited by 43 publications

(21 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, SBM with UA of .23 pH change (Experiment 2) gave satisfactory chick growth. This observation agrees with the work of Waldroup et al (1985) that indicated soybean flakes with UA in excess of .2 could be of good quality for broilers.…”

Section: Discussionsupporting

confidence: 93%

Evaluation of Protein Solubility as an Indicator of Underprocessing of Soybean Meal

Araba

Dale

1990

Poultry Science

View full text Add to dashboard Cite

Two experiments were conducted to compare urease activity, orange G-binding capacity, trypsin inhibitor activity (TIA), and protein solubility (PS) in a potassium hydroxide solution as indicators of underprocessed soybean meal (SBM). Subsamples of raw detailed, hexane-extracted SBM (RSBM) were autoclaved for varying lengths of time at 121 C. Orange G binding capacity of the meal did not vary substantially and did not clearly differentiate between raw and heated SBM. Urease activity, TIA, and PS all reflected degrees of heat treatment. However, PS values were more closely correlated with chick performance and paralleled with trypsin inhibitor concentration in meals for all autoclaving times used. Chick growth was optimized when RSBM was autoclaved for IS min with a resulting PS of 75%. Diets containing this meal gave lowest pancreas weight (as percentage of body weight). It appears that PS is of value in the detection of underprocessed SBM. Protein solubility values in excess of 85% or less than 70% indicate under-or overprocessing of SBM, respectively. (Key words: soybean meal, underprocessing, protein solubility, urease activity, trypsin inhibitor)

show abstract

Section: Discussionsupporting

confidence: 93%

Evaluation of Protein Solubility as an Indicator of Underprocessing of Soybean Meal

Araba

Dale

1990

Poultry Science

View full text Add to dashboard Cite

show abstract

“…According to Baker (2000), the effect of Kunitz TI is age-dependent, and might be more harmful for young animals than for adults. Pancreatic hypertrophy is an attempt of the body to offset the effect of ingested TI, as it will increase the enzyme production and secretion of trypsin and chymotrypsin (Liener 1981;Waldroup et al 1985). In the present experiment, the highest dietary inclusion of RFFS resulted in the highest pancreas weight and highest trypsin activity while the group fed the basal diet (without RFFS) resulted in the lowest pancreas weight and Trypsin activity.…”

Section: Discussionmentioning

confidence: 48%

The effect of soybean meal replacement with raw full-fat soybean in diets for broiler chickens

Rada

Lichovnikova

Šafařı́k³

2016

Journal of Applied Animal Research

View full text Add to dashboard Cite

The aim of this study was to examine the effects of soybean meal replacement by multiple levels of raw full-fat soybean (REFS) in broiler diets on the growth performance, apparent ileal amino acids digestibility (AIAAD), intestinal histometric characteristic, pancreas weight and trypsin activity in digesta. In the experiment, in total 208 × ROSS 308 male chickens were used to examine the effect of RFFS on growth performance, AIAAD, intestinal morphology and trypsin activity in the intestinal content. Four dietary treatments were used: control group (without RFFS) and groups containing 4%, 8% and 12% of RFFS. The experiment lasted from 10th to 38th day of age. The presence of RFFS in broiler diets markedly decreased body weight and feed conversion ratio merely in group fed by 12% of RFFS in its diet. The AIAAD was lower when diets contained RFFS in all observed amino acids expect methionine. Higher AIAAD was obtained in RFFS12 in comparison with RFFS8 and RFFS4 due to a higher weight of pancreas and higher trypsin activity. Pancreas weight and trypsin activity increased with increasing RFFS in the diets. The morphology parameters villus height and crypt depth were negatively affected by the presence of RFFS.ARTICLE HISTORY

show abstract

“…The rate of UA inactivation was found to be higher at higher levels of independent variables and vice versa and it can be seen that UA inactivation exhibited more sensitivity to temperature as compared to the time of roasting within the given experimental ranges. The recommended values for UA were reported from 0.2 ≤ (McNaughton, Reece, & Deaton, ) to 0.5 ΔpH (Waldroup, Ransey, Hellwig, & Smith, ), however, UA ranges between 0.01 and 0.35 ΔpH is generally considered satisfactory, greater than that indicates under‐processed quality (Van Eys, ). The acceptable level of UA was achieved between 26.58 and 30 min and 158.16–160°C ranges of time and temperature, respectively, and found under dark blue region of 3D surface plot.…”

Section: Resultsmentioning

confidence: 99%

Soybean roasting using continuous solar roaster–A decentralized approach for agricultural processing

Raza

Munir

Ghafoor

et al. 2019

J Food Process Engineering

View full text Add to dashboard Cite

The study was carried out to evaluate the performance of a continuous solar roaster for the roasting of soybeans. The system comprises a 10 m2 fixed focus concentrator coupled with the continuous solar roasting system which is designed for decentralized processing of agricultural products in medium to high temperature range. The independent variables of roasting time (10–30 min) and temperature (140–160°C) were optimized for soybean roasting using response surface methodology. The optimized roasting conditions were found to be 29 min and 160°C at which urease activity was decreased to 0.09 ΔpH, protein solubility decreased to 80.76% and protein dispersibility index decreased to 28.53%, which inferred quite satisfactory performance for continuous solar roaster for soybean roasting in terms of quality. Moreover, moisture and fat contents were reduced by 86.3 and 29.9%, respectively whereas protein, fiber, carbohydrate and ash contents were increased by 12.9, 10.6, 8.1, and 14.1%, respectively after roasting. It was also concluded that 100 kg soybean can be roasted successfully on a sunny day with average direct normal irradiance ranging between 600 and 800 W m−2. The payback period of continuous solar roaster was estimated to be 1.3 years in terms of fuel savings. Practical applications Roasting of perishable agricultural products by concentrating solar power is a novel research area of solar thermal energy utilization in medium to high temperature range agricultural processing. A prototype of a continuous solar roaster (CSR) was developed that was fitted with a 10 m2 elliptical fixed focus concentrator and a copper coil heat receiver coupled with the roasting unit. The CSR can generate a temperature >200°C for roasting with available direct normal irradiance (DNI) of 600–800 Wm−2 during the peak hours on a sunny day, thus capable of roasting a variety of agricultural products between 150 and 220°C. The farmers can install CSR at farm‐gate level for commercialized value addition as it is completely independent from fossil fuel based energy supplies for thermal and electric energy generation. Significant socio‐economic benefits could be realized for small to medium scale rural farming communities with this decentralized and eco‐friendly technology particularly in developing countries.

show abstract

Optimum Processing for Soybean Meal Used in Broiler Diets

Cited by 43 publications

References 18 publications

Evaluation of Protein Solubility as an Indicator of Underprocessing of Soybean Meal

Evaluation of Protein Solubility as an Indicator of Underprocessing of Soybean Meal

The effect of soybean meal replacement with raw full-fat soybean in diets for broiler chickens

Soybean roasting using continuous solar roaster–A decentralized approach for agricultural processing

Contact Info

Product

Resources

About