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34 articles for “A. V. Duncan”
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Research ArticleOpen accessIn the author namesPollution Risk Analysis of Heavy Metals at Illegal Mining Sites at Atiwa East District, GhanaSamuel Wiafe, Sarah Fanny Hackman Duncan, Boakye Ebenezer, Samuel Yeboah BaakoThis study aims at determining the level of pollution of heavy metals (Cr, Cu and Hg) in the soils of illegal mining sites in Atiwa East District of Ghana. The concentrations of Copper (Cu), Chromium (Cr), and Mercury (Hg) in the soils were determined using Atomic Absorption Spectrometry (AAS). The extent of heavy metal pollution and pollution risk assessment was … …Current Research in Geoscience, Vol. 12, Issue 1 · 2 Jun 2022 · 10,698 accessesView PDFCite
Research ArticleOpen accessIn the author namesInfluences of Feed Additives on in vitro Volatile Fatty Acid ProductionA. V. Duncan, A. Woldeghebriel, C. Privott et al.This study investigated effects of the feed additives nitrate and fumarate alone or in combination on in vitro Volatile Fatty Acid (VFA) production. Rumen fluid was collected from Holstein-Friesian cattle averaging 650 kg in BW (body weight) offered 11.4 kg d-1 per animal of concentrate diet containing equal amounts of soybean meal, whole cottonseed and ground corn once a day … …American Journal of Animal and Veterinary Sciences, Vol. 10, Issue 1 · 30 Dec 2014 · 7,232 accessesView PDFCite
Research ArticleOpen accessIn the author namesRELATIONSHIPS AMONG INDICATORS OF FITNESS, FATNESS AND CARDIOVASCULAR DISEASE RISK FACTORS IN ADOLESCENTSRobert Malina, Stephen-Mark Cooper, John Young et al.In adults, fatness and low cardiorespiratory fitness are associated with a higher prevalence of chronic disease risk and mortality. The association between measures of physical fitness and fatness upon cardiovascular risk in youth, however, is less clear. The effects of adiposity and physical fitness upon cardiovascular disease risk factors in youth are receiving increasing attention but studies that have examined … …OnLine Journal of Biological Sciences, Vol. 12, Issue 3 · 7 Aug 2012 · 8,118 accessesView PDFCite
Research ArticleOpen accessIn the author namesCocaine: A Catalyst for Human Immunodeficiency Virus-Associated DementiaNavneet K. Dhillon, Milind Gadgil, Andy Rahardja et al.Injection drug use has been recognized as a major risk factor for AIDS from the outset of the epidemic. Cocaine, one of the most widely abused drugs in the United States can both impair the functions of macrophages and CD4+ lymphocytes and also activate HIV-1 expression in these cells. Cocaine is a multifactorial agent that acts globally to impair the … …American Journal of Infectious Diseases, Vol. 4, Issue 2 · 30 Jun 2008 · 7,590 accessesView PDFCite
Research ArticleOpen accessIn the abstractGrowth Performance and Duodenal Morphometry of 1-6 Week Old Kampung Chickens Supplemented With L-LeucineCharles Venirius Lisnahan, Steffanie Merlin Clyricia Noach, Lukas Pardosi, Theresia Nur Indah KoniThis study evaluated the effects of dietary L-leucine supplementation on growth performance and duodenal morphometry of Kampung chickens during the starter phase (1–6 weeks). A total of 600 one-week-old Kampung chickens were randomly assigned to five dietary treatments with six replicates of 20 birds each in a completely randomized design. The treatments consisted of a basal diet without L-leucine (T0) … …American Journal of Animal and Veterinary Sciences, Vol. 21, Issue 3 · 11 Sep 2026 · 911 accessesView PDFCite
Research ArticleOpen accessIn the abstractEffectiveness of the Anaerobic Haylage Method for Flax Waste Utilization in the Diet of Friesian Holstein CowsRuly Budiono, Joko Kusmoro, Erin Nurinsani Waafi, SukonoThe haylage dry feed fermentation method is one of the methods of preserving grass feed, dried herbs, or dry agricultural waste for animal feed. This study aims to determine the quality of hemp flakes waste that has been dried for 6 months and has a water content of <3% using the Haylage method. The research parameters include physical quality, pH, … …OnLine Journal of Biological Sciences, Vol. 26, Issue 1 · 31 Mar 2026 · 1,274 accessesView PDFCite
Research ArticleOpen accessIn the abstractEffect of Leucaena leucocephala Protein Supplement on Nutrient Intake, Milk Yield and Quality, Hematology, Metabolites and Economy Efficiency in Etawah Crossbreed GoatsIdat Galih Permana, Salwa Iffat Zahidah Arif, Fajar Rezki Pambudi et al.Legumes, such as Leucaena leucocephala (LL), have high protein and Rumen degradable Protein (RUP) content, so adding legumes to the diet of dairy goats can meet the protein requirements for milk synthesis. However, the addition of LL alone is insufficient to meet the RUP requirement of dairy goats, thus requiring other protein sources. LL Protein Supplement (LLPS) is a feed … …American Journal of Animal and Veterinary Sciences, Vol. 20, Issue 2 · 23 Aug 2025 · 5,348 accessesView PDFCite
Research ArticleOpen accessIn the abstractEffects of Dietary Isoleucine Supplementation on the Growth Performance, Carcass Characteristics and Ileal Morphology of Native ChickensCharles Venirius Lisnahan, Oktovianus Rafael Nahak, Lukas PardosiThe roles of isoleucine in the protein synthesis, metabolisms, and growth of chicken have been widely reported. However, its effect on native chicken has not been previously reported. In this work, we reported the effects of dietary isoleucine supplementation on growth performance, carcass characteristics, and ileal morphology in native chickens during the grower phase (6-12 weeks). Two hundred native chickens … …OnLine Journal of Biological Sciences, Vol. 25, Issue 2 · 21 Jun 2025 · 2,945 accessesView PDFCite
Research ArticleOpen accessIn the abstractImpact of Lighting Durations on Production, Quality, and Fungal Contamination in Green FodderSuci Wulandari, Adib Norma Respati, Satria Budi Kusuma et al.This study aimed to identify hydroponic fodder seeds with optimal production and chemical quality and to determine the fungal species contaminating the green fodder produced. This study used a 2´5 Factorial Completely Randomized Design pattern, with 2 replications. Factor I consisted of two lighting treatments: (1) 12 hours of natural sunlight and (2)24 h of light (natural sunlight followed by … …OnLine Journal of Biological Sciences, Vol. 25, Issue 2 · 3 Jun 2025 · 4,798 accessesView PDFCite
Research ArticleOpen accessIn the abstractAntioxidizing Efficiency of Yogurt Probiotics Peptides Concerning Egg Yolk NutrientsSyifa Silviarahma Nurfadilah, Lovita Adriani, Deny Saefulhadjar et al.Yogurt contains bioactive peptides that serve as antioxidants. These peptides can inhibit the production of free radicals in laying chicken body cells, affecting egg quality. We aimed to evaluate the impact of the antioxidant potential of Water-Soluble Peptide Extract (WSPE) yogurt on the protein, lipid, and cholesterol levels in yolks from chicken eggs. We used a completely randomized design (CRD) … …American Journal of Animal and Veterinary Sciences, Vol. 20, Issue 1 · 31 Jan 2025 · 6,247 accessesView PDFCite