ABSTRACT
This study was performed in Ross 308 chickens aged 1-21 days and aimed to evaluate whether the addition of 25-hydroxycholecalciferol (25(OH)D3 ) to broiler chicken diets affects their growth performance and immunity. A completely random 2 × 2 factorial arrangement was used with two levels of vitamin D3 and the absence or presence of 25(OH)D3 , corresponding to four treatments based on sorghum + soya bean diets: (i) 200 IU of vitamin D3 /kg of feed (Diet 1) (NRC, ), (ii) Diet 1 + 69 µg of 25(OH)D3 /kg of feed (Diet 2), (iii) 5,000 IU of vitamin D3 /kg of feed (Diet 3) and (iv) Diet 3 + 69 µg of 25(OH)D3 /kg of feed (Diet 4). Each treatment was conducted with six replicates of 10 chickens each. Water and feed was supplied ad libitum. The results showed significantly increased growth and tibia ash (p < .05) in the birds fed 5,000, IU of vitamin D3 /kg + 25(OH)D3 . Additionally, the cellular immune response increased significantly (p < .05) in both treatments with added 25(OH)D3. Based on the results obtained under the current test conditions, the addition of 25(OH)D3 at a rate of 69 µg/kg to diets containing vitamin D3 improved the cellular immune response and mineral deposition in the bones of broilers aged 1-21 days. Because these parameters are very important in modern poultry farming, these results indicate that supplementation with 25(OH)D3 should improve broiler production.
Subject(s)
Calcifediol/pharmacology , Chickens/growth & development , Cholecalciferol/pharmacology , Animal Feed/analysis , Animal Nutritional Physiological Phenomena , Animals , CD4-Positive T-Lymphocytes/physiology , CD8-Positive T-Lymphocytes/physiology , Calcifediol/administration & dosage , Chickens/immunology , Cholecalciferol/administration & dosage , Diet/veterinary , Dietary Supplements , Immunity, Cellular/drug effects , Immunoglobulin A , Male , VitaminsABSTRACT
Las hojas de platano fueron evaluadas como materia prima para la elaboracion de un concentrado proteinico (LPC).La hojas contienen, en base seca, 11% de cenizas, 18% de proteina cruda, 9% de grasas totales, 30% de fibra cruda y 32% de carbohidratos.Las proteinas de las hojas son deficientes en los amino acidos sulfurados. El alto contenido de acidos grasos polinsaturados y de compuestos fenolicos, podrian conllevar serios problemas durante el proceso de preparacion del concentrado y podria asimismo influir negativamente sobre la estabilidad del producto final
Subject(s)
Plant Extracts , Plantago , Plant Proteins, DietaryABSTRACT
Las proteinas de las hojas de platano fueron extraidas usando una solucion tampon y luego fueron precipitadas a pH acido. Como condiciones optimas para la preparacion del concentrado proteinico se obtuvieron los siguientes valores: pH de extraccion 11; temperatura de extraccion: 30 graus C; duracion de la extraccion: 30 minutos; pH de precipitacion: 3,5 y numero de extracciones: una. El concentrado proteinico preparado bajo las condiciones optimas de extraccion presento la siguiente composicion: 50,7% de proteinas y 39% de grasa total. Basandose en el perfil de aminoacidos y considerando la alta concentracion de acidos grasos polisaturados, puede proponerse el concentrado como un buen suplemento para dietas deficientes en proteinas Un estudio de las propiedades funcionales del concentrado demuestra que puede ser utilizado en la industria de alimentos para facilitar la formacion de emulsiones, suspenciones o como un agente espesante