RSM 4/7/26

Manuscript Review Process

  • Regular activity for scientists submitting articles for publication.
  • Articles sent to various reviewers for critique.
  • Understanding the review process assists in better manuscript preparation.

Introduction to Reviewed Manuscript

  • Paper under review: "Effect of TOP, chickpeas, and lentils on rumen fermentation, digestion, microbial protein synthesis, and feedlot performance in receiving diets for beef cattle."
  • Importance of legumes and crops in nutrition for livestock.

Rationale for Experimentation

  • Expansion of acreage for crops such as chickpeas and lentils in Northern Plains.
  • 2015 statistics showing North Dakota producing:
    • 38% of all lentils in the U.S.
    • 70% of all field peas.
  • Field peas and chickpeas are nutrient-dense feed grains (moderate crude protein, high digestibility).
  • Premium market for human consumption leads to higher prices.
  • Pulses not meeting quality standards sold as livestock feed.
  • Previous research shows positive outcomes of peas in diets for sheep and cattle.
  • Limited nutritional information regarding chickpeas and lentils.

Objective of the Study

  • Study initiated due to a gap in information regarding the use of chickpeas and lentils in ruminant diets.

Definition of Pulses

  • Pulses defined as leguminous crops, typically seeds, that are high in protein and fiber.
    • Origin of the term from Latin, meaning "thick."
    • Commonly used in soups and other dishes.

Hypothesis of the Experiment

  • Hypothesis: "Replacing corn and canola meal with whole pulses in receiving diets for beef cattle will have little effect on digestive responses."
  • Rationale:
    • Corn and canola meal effective in feedlot diets.
    • Availability of new high-protein, digestible alternatives affects productivity.
    • Anticipation that these pulses will perform similarly to traditional feeds.

Market Considerations

  • Economic feasibility of using pulses vs. corn:
    • Pulses marketed at lesser prices if not suitable for human food.
    • Need for logistics and market systems to be established for pulses.

Objectives of the Study

  • Evaluate effects of replacing corn and canola meal with pulse grains on:
    • Receiving performance of weaned steers.
    • Intake, digestion, microbial efficiency, ruminant fermentation.

Originality of Research

  • Claim of originality cited due to limited research data available on chickpeas and lentils in beef diets.

Materials and Methods

Study Design

  1. Conducted with 16 animals (8 Holsteins and 8 Angus cross steers).
  2. Cannulated animals utilized for measured evaluations.
Feed Composition
  • Diet formulation:
    • 50% grass hay (8.9% crude protein, 74% NDF, 44% ADF, 9.3% ash).
    • 41% dried rolled corn, canola meal or pulse grains.
    • 5% sugar beet concentrate separator by-product and 4% supplement.
  • Treatments evaluated:
    • Treatment 1: corn and canola meal (control).
    • Treatment 2: corn and chickpeas.
    • Treatment 3: corn and field peas.
    • Treatment 4: corn and lentils.
Experimental Timeline
  • 21-day total study period:
    • 14 days for adaptation to the diet.
    • 7 days for sample collection.
  • Chromic oxide used as a marker for determining duodenal matter flow.
Digestibility Measurement Techniques
  • Collect samples from duodenal cannula and feces to assess digestibility.
  • Ruminal sampling of bacteria isolates to measure microbial protein synthesis.

Second Experimental Design

  • Included 176 steers, fed different treatment in pens.
  • Pen setup: 16 pens with 11 steers each, four pens per treatment.
  • Initial, mid-point (day 18), and final body weights recorded at day 39 to compute daily gains and efficiency.

Results Evaluation and Statistical Analysis

Statistical Methods Used

  • Data analyzed via mixed procedure using SAS.
  • Included blocking effects, which were later deemed non-significant and removed from the model.
  • Final model incorporated fixed treatment effects only, focusing on treatment efficiency and weight gain.

Results Conclusions

  • Cattle on pulse diets demonstrated greater dry matter intake and average daily gain, but feed efficiency was similar to controls.

Implications of Findings

  • Pulse grains identified as viable substitutes for corn and canola meal in diets.
  • Minimal effects on ruminant fermentation noted, indicating potential for positive economic impacts for cattle feeders.

General Considerations for Review Process

  • Ensured compliance with established humane treatment protocols for animals under study.
  • Importance of statistical and experimental design quality to avoid common rejection reasons associated with improper methodologies or insufficient replication.

Conclusion Structure in Manuscript

  • Conclusions must accurately reflect evaluations of the hypothesis, clearly linking observations back to initial objectives and implications.