ReviewAnimals : an open access journal from MDPI2022
Advances, Implications, and Limitations of Low-Crude-Protein Diets in Pig Production.
Review in Animals : an open access journal from MDPI, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 31 papers, 1 of them a synthesis that pooled it.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
31 citing papers in PubMed, 1 synthesis or guideline pooled it, 40 citations in OpenAlex.
- Development of an indigestible dietary protein index to investigate the effects of dietary protein content in postweaned pigs.Journal of animal science · 2025Pooled it
- Maternal methionine supplementation in low-protein diets during late gestation and lactation increases performance and alters fecal microbiota of sows and their offspring.Animal nutrition (Zhongguo xu mu shou yi xue hui) · 2026Article
- Diammonium phosphate supplementation in low-protein diets improves nitrogen utilization and feed efficiency without impairing carcass traits or meat quality in finishing pigs.Animal nutrition (Zhongguo xu mu shou yi xue hui) · 2026Article
- Effects of Reduced Crude Protein Diets with Graded Methionine Supplementation on Growth Performance, Nitrogen Utilization, and Serum Metabolomic Profiles in Growing-Finishing Pigs.Animals : an open access journal from MDPI · 2026Article
- Advantages of Increasing Histidine to Lysine Ratios on Growth Performance, Blood Parameters and Histidine-Containing Dipeptides for Weaning Piglets.Animals : an open access journal from MDPI · 2026Article
- Disadvantages of the Use of Low-Protein Diets in Weaned Piglets and Nutritional Interventions: A Meta-Analysis.Animals : an open access journal from MDPI · 2026Review
- Recent updates on amino acid requirements of pigs based on phenotypic improvements: invited review.Animal bioscience · 2026Article
- The effects of reduced protein diet supplemented with arginine plus glutamine-glutamate on growth performance, diarrhea incidence, blood metabolites, nutrient digestibility, and nitrogen utilization in nursery pigs.Animal bioscience · 2026Article
- Dietary silicate: a biogenic strategy to enhance growth, gut health, and nutrient utilization in finishing pigs through low-carbon diets.Porcine health management · 2026Article
- Nitrogen Excretion, Ammonia, and Greenhouse Gases Emission in Italian Heavy Pigs: The Role of Feed in Environmental Impact Mitigation.Animals : an open access journal from MDPI · 2026Review
- Effects of standardized ileal digestible lysine:crude protein ratio and the use of non-protein nitrogen on growth performance of 11- to 25-kg pigs.Journal of animal science · 2026Article
- High indigestible dietary protein impairs growth and health status of nursery pigs with Salmonella Typhimurium more than with enterotoxigenic Escherichia coli F4 challenge.Journal of animal science · 2026Article
- Nutritional needs of non-essential amino acids for intestinal health and growth performance of nursery pigs fed diets without soybean meal.Journal of animal science · 2026Article
- Evaluation of dietary crude protein and non-starch polysaccharidase on nursery pig performance, nitrogen retention, hindgut fermentation and health.Translational animal science · 2026Article
- Dietary protein level in response to nitrogen balance along with production performance of laying hens.Journal of animal science and technology · 2025Article
- Reduced Dietary Protein Levels Improved Growth Performance, Promoted Efficient Nutrient Utilization, Increased FecalAnimals : an open access journal from MDPI · 2025Article
- Protease Enzyme Supplementation in Weaning Piglets Fed Reduced Crude Protein Diets: Effects on Gut Health Integrity and Performance Response.Animals : an open access journal from MDPI · 2025Article
- Nutritional Solution for the Italian Heavy Pig Production to Improve Nitrogen Efficiency While Maintaining Productive Performance and Meat Quality.Animals : an open access journal from MDPI · 2025Article
- Low-Protein Diet Supplemented with Amino Acids Can Regulate the Growth Performance, Meat Quality, and Flavor of the Bamei Pigs.Foods (Basel, Switzerland) · 2025Article
- Benzoic acid supplementation in crude protein-deficient diets reduces nursery pig growth performance.Journal of animal science · 2025Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
3 authors at 1 institution in 2 countries.
Funding
Abstract
Currently, five crystalline essential amino acids (Lys, Met, Thr, Trp, and Val) are generally used, allowing formulation of low-crude-protein (CP) diets. Moreover, Ile may also be used depending on its economic value and the specific feeding program. Experimentally, it has been shown that further reduced CP levels can be achieved by supplemental His, Leu, and Phe to the diets. However, decreasing the dietary CP level while maintaining optimal ratios of amino acids has shown contradictory effects on pigs' growth performance. Due to the divergence in the literature and the importance for practical formulation strategies in the swine industry, a literature review and a meta-analysis were performed to estimate the minimum CP level that would not compromise pig performance. Based on the present review, there is a minimum CP level after which the growth performance of pigs can be compromised, even though diets are balanced for essential amino acids. Considering average daily gain and gain to feed, respectively, these levels were estimated to be 18.4% CP (95% confidence interval [CI]: 16.3 to 18.4) and 18.3% CP (95% CI: 17.4 to 19.2) for nursery, 16.1% CP (95% CI: 16.0 to 16.2) and 16.3% CP (95% CI: 14.5 to 18.0) for growing, and 11.6% CP (95% CI: 10.8 to 12.3) and 11.4% CP (95% CI: 10.3 to 12.5) for finishing pigs.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.