25 results for “FCR”

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Research ArticleOpen accessIn the keywordsDietary Inclusion of Probiotics, Prebiotics and Synbiotic and Evaluating Performance of Laying HensMohammad Zarei, Mohammad Ehsani, Mehran TorkiProblem Statement: This study was conduct to compare effects of various commercial feed additives on performance of laying hens. Approach: To evaluate effects of dietary inclusion of feed additives (Yeasturer, A-Max, Thepax, Fermacto and Biomin) on performance of laying hens, 216 Lohmann LSL-Lite hens were divided in 36 cages (n = 6). Approach Hens in 6 cages (replicates) were assigned … …American Journal of Agricultural and Biological Sciences, Vol. 6, Issue 2 · 6 Jun 2011 · 9,373 accessesView PDF Cite

Research ArticleOpen accessIn the keywordsAssessment on Biocides Bioaccumulation in Mullet Liza klunzingeri in Kuwaiti Waters, off the Arabian GulfA.H. Bu-Olayan, B. V. ThomasBiocides, such as formaldehyde (HCHO), sodium hypochlorite (NaOCl) and glutaraldehyde (C5H8O2) that are commonly used in thermal, desalination and power plants and industries were tested on the commercially important mullet fish, Liza klunzingeri to determine the environmental contamination in the stressed ecosystem of Kuwait Bay sites. Multi-factor Probit analysis toxicity tests (96 h) on L. klunzingeri showed the lowest observed … …American Journal of Environmental Sciences, Vol. 2, Issue 3 · 30 Sep 2006 · 6,768 accessesView PDF Cite

Research ArticleOpen accessIn the keywordsPotential of HMEC-1 Line and HUVEC Primary Culture Cells to Study the Neonatal IgG Fc Receptor in vitroLuz Belinda Ortiz-Alegría, Irma Cañedo-Solares, Felipe Vadillo-Ortega et al.The neonatal IgG Fc receptor (FcRn) plays an important role in IgG homeostasis and immunity passive transfer. Fine points regarding these mechanisms, however, are still emerging. In order to obtain information about these phenomena, it is essential to have in vitro models of endothelium that express this receptor. In this study we chose two widely used models of human endothelial … …American Journal of Immunology, Vol. 12, Issue 1 · 21 Mar 2016 · 9,446 accessesView PDF Cite

Research ArticleOpen accessIn the abstractMeta Analysis of Growth Performance of Broilers in Response to Dietary Cassava Leaf Meal InterventionChristian Anayo Mbajiorgu, Ifeanyi Princewill OgbuewuThe use of Cassava Leaf Meal (CLM) in broiler diets has gained attention due to its high crude protein content (24-35%) and other valuable nutrients. Therefore, the objective of this meta-analysis was to assess the impact of diets with and without CLM on broiler growth performance. Search performed on four bibliographic databases produced 584 articles of which 11 were used … …American Journal of Animal and Veterinary Sciences, Vol. 21, Issue 3 · 30 Sep 2026 · 578 accessesView PDF Cite

Research ArticleOpen accessIn the abstractThe Effect of Early Weaning on Performance, Health Parameters, and Carcass Traits of Bonsmara Bull Calves Under Feedlot ConditionsKgotso Patrick Matli, Thobela Louis Tyasi, Pieter FourieA feedlot is an intensive farming system used for finishing livestock. This study analyzed the performance, health, and carcass traits of Early-Weaned Calves (EWC) and Traditionally-Weaned Calves (TWC). A total of 285 Bonsmara bull calves were grouped into two weaning strategies, with 136 EWC (255±27.30 kg) and 149 TWC (308±24.60 kg). Backgrounding was followed by a finishing phase, with a … …American Journal of Animal and Veterinary Sciences, Vol. 21, Issue 2 · 14 Aug 2026 · 1,233 accessesView PDF Cite

Research ArticleOpen accessIn the abstractEffect of Phytobiotic Carica Papaya Seed Extract on Growth Performance, Physiological Parameters, Gastrointestinal and Immune Organs of BroilersNovi Mayasari, Erna Ainal Mardiah, Selly Masella et al.Papaya (Carica papaya) seeds (PS) are known as a potential phytobiotic alternative to Antibiotic Growth Promotor (AGP) in poultry. Papaya seed extract (PSE) contains bioactive compounds such as carpine, chymopapain, and papain. Two hundred one-day-old Cobb strain broiler chicks were randomly allocated to five dietary treatments with four replicates per treatment, and each replicate consisted of ten birds. During the … …American Journal of Animal and Veterinary Sciences, Vol. 21, Issue 1 · 13 Apr 2026 · 1,900 accessesView PDF Cite

Review ArticleOpen accessIn the abstractEfficiency and Sustainability of Alternative Protein Sources for Livestock Production in Sub-Saharan Africa: A Systematic Review and Meta-AnalysisOlusegun Oyebade Ikusika, Bulo Luvuyo, Jaja Ishmeal FestusSub-Saharan Africa (SSA) faces growing challenges in sustainable livestock production due to high costs and limited availability of conventional protein sources such as soybean meal and fishmeal. This systematic review and meta-analysis evaluated the nutritional efficiency and sustainability of locally available alternative protein sources for livestock feed in SSA. Following PRISMA guidelines, systematic searches were conducted across five databases (PubMed, … …American Journal of Animal and Veterinary Sciences, Vol. 20, Issue 4 · 19 Feb 2026 · 1,844 accessesView PDF Cite

Research ArticleOpen accessIn the abstractDetermination of the Probiotic Potential and Metabolic Function of Lactobacillus Strains for Healthy Calf RearingRaya Myktybayeva, Serkan Özkaya, Elif Rabia Şanlı et al.This research investigstes the impact of probiotic supplementation on the growth performance, health status, and physiological traits in Holstein calves. A total of thirty calves were randomly divided into three experimental groups: a control group and two treatment groups receiving probiotics at doses of 1 g/10 kg and 1.5gt/10 kg live weight. Key indicators, including Live Weight (LW), Body Measurements … …OnLine Journal of Biological Sciences, Vol. 25, Issue 3 · 23 Jul 2025 · 3,626 accessesView PDF Cite

Research ArticleOpen accessIn the abstractCritical Amino Acid and Energy Balancing to Address MaizeGrade Variation in Broiler PerformanceMd. Shahidur Rahman, Muhammad Farhad Hossain, Million Maksuda et al.This study aimed to evaluate the effects of maize grade variationin broiler performance. A total of 189 Cobb 500 broilers were randomly andevenly assigned to three dietary treatments having three replications of 21 birds each. The treatments were: T0 (feed formulated with grade-A maize), T1 (feed formulated with grade-B maize, with Metabolizable Energy (ME) deficiencies compensated by additional Soybean Oil … …American Journal of Animal and Veterinary Sciences, Vol. 20, Issue 2 · 10 Jul 2025 · 2,958 accessesView PDF Cite

Research ArticleOpen accessIn the abstractEconomic Feasibility and Growth Performance of Holstein Friesian Calves Fed Whey-Dangke Fortified Green Calf StarterZyahrul Ramadan, Renny Fatmyah Utamy, Hasbi Hasbi et al.This research evaluated the impact of feeding green calf starter fortified with whey-dangke on Holstein Friesian dairy calves' economic feasibility, growth performance, and health parameters. Experimental diets were applied to 18 Holstein Friesian dairy calves using a randomized complete factorial design with two factors: type of calf starter and level fortification of whey-dangke. The results showed that calves fed different … …American Journal of Animal and Veterinary Sciences, Vol. 20, Issue 2 · 9 Jul 2025 · 3,296 accessesView PDF Cite