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Updated: Jan 21, 2026

Solid Plate-based Dietary Restriction in Caenorhabditis elegans
Published on: May 28, 2011
Dietary restriction improved feed efficiency of inefficient lactating cows
Y A Ben Meir1, M Nikbachat2, Y Portnik2
1Department of Ruminant Science, Institute of Animal Science, Agricultural Research Organization, Rishon Lezion 7528809, Israel; Department of Animal Sciences, The Robert H. Smith Faculty of Agriculture, Food, and Environment, The Hebrew University of Jerusalem, Rehovot, Israel 7610001.
Restricting feed intake in inefficient dairy cows improved their feed efficiency. This dietary adjustment enhanced measures like residual feed intake and energy-corrected milk per dry matter intake.
Area of Science:
- Animal Science
- Dairy Nutrition
- Animal Husbandry
Background:
- Inefficient dairy cows (INE) pose economic challenges due to poor feed utilization.
- Optimizing feeding strategies is crucial for improving dairy farm profitability and sustainability.
Purpose of the Study:
- To investigate the impact of restricted feeding on the feed efficiency of preclassified inefficient dairy cows.
- To evaluate how dietary restriction affects eating behavior, milk production, digestibility, and energy balance.
Main Methods:
- Classified 12 pairs of dairy cows as inefficient (INE).
- Implemented two feeding treatments: ad libitum feeding versus restricted feeding of a 36.5% roughage total mixed ration.
- Monitored eating behavior, milk yield, energy-corrected milk (ECM) production, in vivo digestibility, and energy balance.
Main Results:
- Restricted feeding reduced dry matter intake (DMI) by 12.8% and ECM yield by 5.3% in INE cows.
- Digestibility of dry matter and neutral detergent fiber remained similar between feeding groups.
- Feed efficiency, measured by residual feed intake (RFI) and ECM/DMI, was significantly improved in restricted INE cows.
Conclusions:
- Moderate dry matter intake restriction can enhance feed efficiency in dairy cows identified as inefficient.
- Dietary restriction offers a viable strategy to improve the economic performance of INE dairy cows.
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