ArticleJournal of animal science2018
Pyruvate is an effective substitute for glutamate in regulating porcine nitrogen excretion.
Article in Journal of animal science, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed, 12 citations in OpenAlex.
- Low-Protein Diet Supplemented with Amino Acids Can Regulate the Growth Performance, Meat Quality, and Flavor of the Bamei Pigs.Foods (Basel, Switzerland) · 2025Article
- Sodium pyruvate exerts protective effects against cigarette smoke extract-induced ferroptosis in alveolar and bronchial epithelial cells through the GPX4/Nrf2 axis.Journal of inflammation (London, England) · 2023Article
- Dietary calcium pyruvate could improve growth performance and reduce excessive lipid deposition in juvenile golden pompano (Trachinotus ovatus) fed a high fat diet.Fish physiology and biochemistry · 2022Article
- Effects of supplementing low-protein diets with sodium dichloroacetate and glucose on growth performance, carcass traits, and meat quality of growing-finishing pigs.Journal of animal science · 2022Article
- Effects of adding sodium dichloroacetate to low-protein diets on nitrogen balance and amino acid metabolism in the portal-drained viscera and liver of pigs.Journal of animal science and biotechnology · 2020Article
Corrections and comments
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Authors and funding
20 authors at 7 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
This study was performed to determine if pyruvate, which acts as a critical intermediate in energy metabolism, can substitute the role of glutamate as a metabolic fuel and effectively reduce nitrogen excretion in pigs. First, the experiment in vitro was carried out to investigate the effects of culturing porcine small intestinal epithelial cell line with pyruvate on the oxidation. Then, barrows weighing 40 kg were used in the experiment investigating the changes of nitrogen balance in response to addition of pyruvate to low-protein diets. Last, barrows (40 kg), which were surgically fitted with permanent catheters in the mesenteric vein, portal vein, hepatic vein, and carotid artery, were used to investigate the effects of supplementing low-protein diets with calcium pyruvate on the net portal fluxes of amino acids (AAs) and the consumption of AAs in the liver. The results showed that culturing cells with sodium pyruvate significantly reduced the number of glutamate oxidation (P < 0.05). Addition of calcium pyruvate to low-protein diets significantly reduced urinary nitrogen excretion from 13.2 g/d (18.0% crude protein, CP) to 10.3 g/d (15.0% CP) or 7.80 g/d (13.5% CP) and total nitrogen excretion from 22.5 g/d (18.0% CP) to 17.8 g/d (15.0% CP) or 14.2 g/d (13.5% CP) (P < 0.05), without obviously negative effects on the nitrogen retention (P > 0.05). Addition of calcium pyruvate to low-protein diets significantly decreased essential AA consumption rate in the liver (P < 0.05). This diet modification reduced the net portal fluxes of NH3, glycine, and alanine, as well as urea production rate in the liver (P < 0.05). The results indicated that pyruvate is an effective substitute for glutamate as a supplement in low-protein diets, reducing porcine nitrogen excretion and nitrogen consumption.
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