Payam Vahmani

ORCID: 0000-0003-1537-1317
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About
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Research Areas
  • Fatty Acid Research and Health
  • Meat and Animal Product Quality
  • Ruminant Nutrition and Digestive Physiology
  • Reproductive Physiology in Livestock
  • Lipid metabolism and biosynthesis
  • Animal Nutrition and Physiology
  • Diet and metabolism studies
  • Genetic and phenotypic traits in livestock
  • Adipose Tissue and Metabolism
  • Agriculture Sustainability and Environmental Impact
  • Peroxisome Proliferator-Activated Receptors
  • Liver Disease Diagnosis and Treatment
  • Muscle metabolism and nutrition
  • Metabolism, Diabetes, and Cancer
  • Cancer, Hypoxia, and Metabolism
  • Phytoestrogen effects and research
  • Natural Products and Biological Research
  • Protein Hydrolysis and Bioactive Peptides
  • Animal health and immunology
  • Diet, Metabolism, and Disease
  • Cholesterol and Lipid Metabolism
  • Nutrition, Genetics, and Disease
  • Eicosanoids and Hypertension Pharmacology
  • Spectroscopy and Chemometric Analyses
  • Nuts composition and effects

University of California, Davis
2019-2025

Agriculture and Agri-Food Canada
2014-2021

Lacombe Research and Development Centre
2014-2019

Dalhousie University
2011-2014

The specific fatty acid (FA) profile of colostrum may indicate a biological requirement for neonatal calves. objective this study was to characterize the FA and yields in colostrum, transition milk, mature milk primiparous (PP) multiparous (MP) cows. Colostrum milked from 10 PP MP Holstein cows fed same pre- postpartum rations. Milkings (M) 2 5 12 were respectively termed milk. Overall, short-chain (C4:0 C6:0) 61 50% lower than respectively. A parity by milking interaction also present, with...

10.3168/jds.2021-20880 article EN cc-by Journal of Dairy Science 2022-01-13

Optimising resource use efficiency in animal- agriculture-production systems is important for the economic, environmental, and social sustainability of food systems. Production foods with increased health enhancing aspects can add value to wellbeing population. However, enrichment foods, especially meat fatty acids (HEFA) increases susceptibility peroxidation, which adversely influences its shelf life, nutritional eating quality. The industry has been challenged find sustainable strategies...

10.3389/fanim.2024.1329346 article EN cc-by Frontiers in Animal Science 2024-03-01

Pancreatic ductal adenocarcinoma (PDAC) continues to be a major health problem. A ketogenic diet (KD), characterized by very low carbohydrate and high fat composition, has gained attention for its anti-tumor potential. We evaluated the effect mechanisms of feeding strict KD alone or in combination with gemcitabine autochthonous LSL-KrasG12D/+; LSL-Trp53 R172H/+; Pdx1-Cre (KPC) mouse model. For this purpose, both male female pancreatic tumor-bearing KPC mice were allocated control (CD; %kcal:...

10.1158/2767-9764.crc-22-0256 article EN cc-by Cancer Research Communications 2022-08-11

Feed efficiency is critical in dairy farming, impacting production costs and environmental sustainability. The development of the trait residual feed intake (RFI) has provided an opportunity to select cows that are more efficient converting nutrients into milk. Note RFI requires individual daily records, which typically collected on a limited number research farms. In this context, identification biomarkers can be used identify feed-efficient great interest. As such, study aimed ruminal...

10.3168/jds.2024-25454 article EN cc-by Journal of Dairy Science 2025-01-01

Fibro-adipogenic progenitor cells (FAPs) are mesenchymal stem that produce extracellular matrix (ECM) and intramuscular adipocytes in skeletal muscle. While FAPs have demonstrated responsiveness to their physical environment, there is limited knowledge of how the ECM substrate impacts differentiation, particularly livestock animals. We hypothesized cultured on will differentially impact adherence, proliferation, differentiation. Through an initial screen 9 proteins combinations, significant...

10.14814/phy2.70283 article EN cc-by Physiological Reports 2025-05-01

Abstract Human liver cells (HepG2) were cultured with individual trans ( t ) 18:1 including 6‐, 12‐, 13‐, 14‐, 15‐ and 16‐18:1, retention times of their Δ‐9 desaturation products determined using 100‐m biscyanopropyl‐polysiloxane SLB‐IL111 columns. Corresponding peaks found in beef adipose tissues known to have different delta‐9 desaturase activities. Further lines evidence indicating the presence ‐18:1 isomers fat developed by analysis fatty acid methyl esters (FAME) fractionated Ag + ‐TLC,...

10.1007/s11745-016-4207-0 article EN Lipids 2016-11-16

Although body fatness is a recognized risk factor for pancreatic ductal adenocarcinoma (PDAC), the underlying mechanisms of how fat composition affects carcinogenesis are poorly understood. High-fat diets (HFDs) can disrupt intestinal barrier function, potentially accelerating carcinogenesis. Omega-3 (ω-3) polyunsaturated fatty acids (FAs) have anti-inflammatory properties and help preserve integrity.

10.1016/j.tjnut.2024.10.054 article EN cc-by-nc-nd Journal of Nutrition 2024-11-01

<title>Abstract</title> This study evaluated the correlation between chemical composition and asymptotic in vitro gas production (AGP) of various agricultural by-products. In addition, it attempted to use artificial neural network (ANN) multiple linear regression (MLR) approaches predict AGP based on these Two data sets were used study. The first dataset (training) consisted published data, while second (testing) selected First, by-products measured. two then pooled processed for cluster...

10.21203/rs.3.rs-6453740/v1 preprint EN Research Square (Research Square) 2025-05-06

The present study compared the lipogenic/cholesterolgenic effects of t 6‐, 9‐ (positive control), 10‐, 11‐, 13‐, 14‐, 15‐18:1, cis ( c )9‐18:1 control) or bovine serum albumin (BSA; negative in liver cells (HepG2). Fatty acids (100 μM) were complexed to BSA, and incubated for 24 h. Two wells cultured per treatment experiment, experiment was repeated three times n = 6). fatty acid treatments had no effect on cell viability BSA. content triacylglycerol (TG) cholesteryl esters (CE) increased P...

10.1002/ejlt.201600162 article EN European Journal of Lipid Science and Technology 2016-07-08
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