List of Articles feed efficiency Open Access Article Abstract Page Full-Text 1 - The Effect of Weaning Age on Performance and Economics of Holstein Calves Reared under Organic Farming System M. Sharifi A.A. Khadem B.J. Heins R. Pahlavan M. Safdari Open Access Article Abstract Page Full-Text 2 - Relationship of Mitochondrial Biogenesis and Phenotypic Expression of Residual Feed Intake in Fat-Tailed Lambs H. Rajaei-Sharifabadi A.A. Naserian M.R. Nassiry W. Bottje 20.1001.1.2251628.2021.11.1.14.6 Open Access Article Abstract Page Full-Text 3 - Effects of Surgical Spaying on Heifer Feedlot Growth Performance and Dietary Energetics A. Plascencia V.M. González-Vizcarra Y.S. Valdés-García A. Barreras A. Estrada-Angulo J.D. Urías-Estrada R.A. Zinn 20.1001.1.2251628.2023.13.2.19.7 Open Access Article Abstract Page Full-Text 4 - Growth Performance, Rumen and Cecum Fermentation Parameters, and Microbial Protein Synthesis in Kermani Lambs with Divergent Residual Feed Intake Fed Forage and Concentrate Diets M. Gevari M.R. Dehghani M. Yousef Elahi R. Hoshyar 20.1001.1.2251628.2020.10.4.9.0 Open Access Article Abstract Page Full-Text 5 - Genetics of Body Conformation and Feed Efficiency Characteristics in a Control Line of Rhode Island Red Chicken آ.کا. داس اس. کومار آ. رحیم Open Access Article Abstract Page Full-Text 6 - Long Term Feeding Effects of a Vaccine against of Endotoxemia (ENDOVAC-Beef) on Growth Performance and Carcass Characteristics of Growing-Finishing Calf-Fed Holstein Steers B.C. Latack P.H. Carvalho A. Plascencia R.A. Zinn