Abdulrahman S. Alharthi

ORCID: 0000-0002-9719-9444
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Research Areas
  • Animal Nutrition and Physiology
  • Reproductive Physiology in Livestock
  • Ruminant Nutrition and Digestive Physiology
  • Birth, Development, and Health
  • Meat and Animal Product Quality
  • Effects of Environmental Stressors on Livestock
  • Animal health and immunology
  • Genetic and phenotypic traits in livestock
  • Livestock and Poultry Management
  • Rabbits: Nutrition, Reproduction, Health
  • Infant Nutrition and Health
  • Moringa oleifera research and applications
  • Aquaculture Nutrition and Growth
  • Biochemical effects in animals
  • Adipose Tissue and Metabolism
  • Gut microbiota and health
  • Folate and B Vitamins Research
  • Metabolism and Genetic Disorders
  • Growth Hormone and Insulin-like Growth Factors
  • Sunflower and Safflower Cultivation
  • Insect and Pesticide Research
  • Aldose Reductase and Taurine
  • Pharmacological Effects of Natural Compounds
  • Insect Pest Control Strategies
  • Mycotoxins in Agriculture and Food

King Saud University
2015-2025

King Abdulaziz University
2021-2024

University of Illinois Urbana-Champaign
2017-2023

University of Bisha
2021

King Abdulaziz Medical City
2021

King Abdullah International Medical Research Center
2021

Ministry of Health of the Russian Federation
2021

King Saud bin Abdulaziz University for Health Sciences
2021

Urbana University
2017-2020

University of Illinois System
2016

Abstract Background Recent studies underscored that divergence in residual feed intake (RFI) mature beef and dairy cattle is associated with changes ruminal microbiome metabolome profiles which may contribute, at least part, to better efficiency. Because the rumen neonatal calves during preweaning period underdeveloped until close weaning, they rely on hindgut microbial fermentation breakdown undigested diet components. This leads production of key metabolites such as volatile fatty acids...

10.1186/s40104-019-0406-x article EN cc-by Journal of Animal Science and Biotechnology/Journal of animal science and biotechnology 2020-01-20

This research was executed to study the impacts of adding betaine (BT) broiler diets on intestinal inflammatory response and barrier integrity under heat stress (HS). At 21 d age, 150 male broilers (Ross 308) were randomly assigned 3 treatment groups: control (CON) group, in which provided standard finisher feed thermoneutral condition (22 ± 1°C); HS group + BT given supplied with 0 1,000 mg/kg BT, respectively, cyclic (33 1°C for 8 h from 08:00 16:00 temperature residual hours). Each...

10.1016/j.psj.2021.101337 article EN cc-by Poultry Science 2021-06-19

To our knowledge, most studies demonstrating the role of manipulating maternal nutrition on hindgut (i.e., large intestine) microbiota in offspring have been performed non-ruminants. Whether this phenomenon exists cattle is largely unknown. Therefore, objectives current study were to evaluate impact post-ruminal supply methionine during late-pregnancy dairy cows fecal and metabolome neonatal calves, their association with body development growth performance preweaning period. achieve this,...

10.3389/fmicb.2019.02159 article EN cc-by Frontiers in Microbiology 2019-09-19

Abstract Background We aimed to characterize the protective effects and molecular mechanisms of action a Saccharomyces cerevisiae fermentation product (NTK) in response mastitis challenge. Eighteen mid-lactation multiparous Holstein cows ( n = 9/group) were fed control diet (CON) or CON supplemented with 19 g/d NTK for 45 d (phase 1, P1) then infected right rear quarter 2500 CFU Streptococcus uberis 2, P2). After 36-h, mammary gland liver biopsies collected antibiotic treatment started until...

10.1186/s40104-021-00560-8 article EN cc-by Journal of Animal Science and Biotechnology/Journal of animal science and biotechnology 2021-04-08

1. This study evaluated the effectiveness of yeast (Saccharomyces cerevisiae) cell wall (YCW) supplementation on growth performance, carcase characteristics, serum biomarkers, liver function, ileal histology and microbiota broiler chickens challenged with Clostridium perfringens (C. perfringens).

10.1080/00071668.2023.2296938 article EN British Poultry Science 2024-02-28

This research aimed to assess the influences of bentonite (BN) and zeolite (ZE) on reducing toxic aflatoxin B1 (AFB1) in broilers by examining growth performance, carcase characteristics, serum indices, ileum morphology, apparent nutrient digestibility, liver AFB1 residues. In total, 360 11-d-old straight-run (Ross 308) were randomly allocated into 6 dietary treatments, with 10 replications birds each, a 20-d experiment. The treatments as follows: standard basal diet (negative control, NC);...

10.1080/1828051x.2022.2101389 article EN cc-by Italian Journal of Animal Science 2022-08-08

Background: Intensive feeding systems for lamb production are based on high concentrations of feed, depending the type forage, which can cause digestive disturbances; however, forage particle length (FPL) and size (FPS) affect fermentation process productive performance lambs. Understanding how lambs meet these challenges requires a conceptual integration structure, mechanical microbial fermentation. This synthesis will hopefully contribute to development biomimetic co-treatment translating...

10.18805/ijar.bf-1923 article EN cc-by Indian Journal of Animal Research 2025-01-22

Dunaliella salina (DS) is a prospective source of bioactive carotenoids, including beta-carotene, zeaxanthin, and omega-3 fatty acids. The effect dietary supplementation DS on the productive performance, immune response, egg quality heat-stressed laying hens has not been comprehensively studied. We investigated how D. affects deposition carotenoids acids in yolks experiencing summer heat stress, as determined by Temperature-Humidity Index (THI). influence antioxidant status was assessed. A...

10.3389/fvets.2025.1545433 article EN cc-by Frontiers in Veterinary Science 2025-02-26

Citrus flavonoids (Bioflavex) are plant polyphenols with antioxidant properties that can have a positive effect on growth, rumen health, carcass characteristics and meat quality in ruminants. In this study, the effects of adding citrus to diet growth performance, feed efficiency, morphology, characteristics, Awassi lambs were investigated. Thirty-six male (27.36 ± 0.025 kg initial body weight) at 14 weeks age individually allocated 3 dietary treatments (T1 = basal without any additives, T2...

10.3389/fvets.2025.1572911 article EN cc-by Frontiers in Veterinary Science 2025-04-02

Pregnancy and early life are critical periods of plasticity during which the fetus neonate may be influenced by environmental factors such as nutrition. Maternal methionine (Met) supply in non-ruminants pregnancy can affect offspring development growth. Thus, objective this study was to investigate if increasing Met late-pregnancy affects developmental parameters calf at birth either maternal or colostrum from Met-fed cows alters Calves born Holstein individually-fed a basal control [CON;...

10.1186/s40104-018-0298-1 article EN cc-by Journal of Animal Science and Biotechnology/Journal of animal science and biotechnology 2018-11-06

Previous research has revealed a strong inflammatory response within adipose (AT) tissue during the transition into lactation. Whether this effect is result of oxidative stress induced by lipolysis and fatty acid oxidation associated with differences in prepartum body condition score remains to be determined. The objectives study were investigate systemic biomarkers energy balance inflammation expression lipid metabolism- inflammation-related genes AT period dairy cows.Twenty multiparous...

10.1186/s40104-017-0221-1 article EN cc-by Journal of Animal Science and Biotechnology/Journal of animal science and biotechnology 2018-01-15

Ross 308 broilers in a randomized complete block design with 2 × factorial treatment arrangement (four treatments 12 replications of six chicks each) were fed corn and SBMbased diets two concentrations metabolizable energy (ME) (normal (positive control, PC) low (negative NC)) amounts enzyme cocktail (EC) (0% 0.005%) for 35 days. Performance, carcass traits, serum metabolites, ileal histology, apparent nutrient digestibility evaluated. Compared the non-supplemented diet, use EC improved feed...

10.3390/ani12091094 article EN cc-by Animals 2022-04-23

Based on the biologically active compounds of Pulicaria jaubertii studied so far, there are no studies use this plant in broilers. Therefore, present study aims is to investigate effect performance, blood biochemistry, internal organs, gene expression related immune response, and cecal microbiota broiler chickens. A total two hundred forty male broilers were used divided into four diet groups (T1 = 0, T2 3, T3 6, T4 9 g powder/kg basal diet). The performance evaluation, serum biochemical...

10.3390/ani13061116 article EN cc-by Animals 2023-03-22
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