Ruminal Degradation Kinetics of Soybean Meal and Cotton Cake Protein Concentrates

Two cannulated cattle were used to incubate soybean meal and cotton cake samples for up to 72 hours. Dry matter degradability for soybean meal ranged from 86.35% to 65.50% depending on passage rate, while cotton cake ranged from 53.44% to 35.21%. The study by Ubiara Henrique Gomes Teixeira evaluated five non-linear mathematical models to characterize the in situ degradation parameters.

Use Cases

• Compare the fit of five non-linear models (Exponential, Van Milgen, Logistic, Gompertz, Richards) for ruminal degradation data.
• Estimate soluble and insoluble potentially degradable fractions for crude protein in different protein concentrates.
• Model dry matter and crude protein degradability over time based on incubation residues collected at specific intervals.

Strengths

• Specific degradability percentages are reported for two protein sources at three different passage rates.
• Model selection is supported by reported Akaike weights, with the Richards model having a 95.45% chance of being most suitable for dry matter degradation of soybean meal.
• The experimental protocol is described, including the use of two cannulated cattle and ten incubation time points.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Last update date is unknown; freshness unverified.

Provenance

Source

Ubiara Henrique Gomes Teixeira

Collection Method

In situ evaluation using two rumen-cannulated cattle, with samples incubated at specified hours and residues analyzed for dry matter and crude protein.