Effect of a Vitamin B12 Concentrate and Liver Meal on Growth and Feed Efficiency of Chicks Fed an All-Plant Protein Ration

Organic Acids and Potential for Modifying the Avian Gastrointestinal Tract and Reducing Pathogens and Disease

“…However, it took until the early 1940s for scientists, Ernst Chain and Howard Florey, to isolate a sufficient quantity of penicillin to be tested and validated as an effective treatment for illnesses ( 8 ). Shortly after the discovery of antibiotics, a growth promoting component of fungal mycelia, an antibiotic, was observed outperforming APF, vitamin B 12 ( 8 , 11 – 14 ). Moore et al included antibiotics in chicken feed and was the first research group to show an increase in weight gain due to the inclusion of antibiotics ( 15 ).…”

Effect of protein on performance and haematology of broilers fed cassava peel-based diets

“…All the diets were chemically analysed according to the standard of AOAC (1990) methods for their proximate composition. Packed cell volume (PCV) was determined by the method of Wintrobe (1933), the red blood cell (RBC), white blood cell (WBC), mean cell volume (MCV), mean cell haemoglobin (MCH) and mean cell heamoglobin concentration (MCHC) were determined as reported by Jain (1986) while haemoglobin (Hb) was estimated as reported by Swensen (1951) and Coles (1986).…”

Vitamin B12 and Choline in Corn-Soy Rations for Starting Poults ,

“…It is well established that chicks require a dietary source of B12 (Davis and Briggs, 1951;Swenson, 1951;and Ott, 1951). Various workers have published evidence relating to the essentiality of a dietary source of B12 in the ration of turkey poults, among them McGinnis et al (1949), Singsen and Matterson (1950), Combs and Shaffner (1950), Stokstad and Jukes (1950), Atkinson and Couch (1950), Patrick (1951) and Almquist and Merrit (1951).…”