Inluence of source and level of glycerin in the diet on growth performance, liver characteristics, and nturient digestibility in broilers from hatching to 21 days of age
| Autor: | David Menoyo, H. A. Mandalawi, Gonzalo Gonzalez Mateos, M V Kimiaeitalab, V. Obregon |
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| Rok vydání: | 2014 |
| Předmět: |
Glycerol
Male Soybean meal Biology Feed conversion ratio Random Allocation 03 medical and health sciences chemistry.chemical_compound Nutrient Ileum Animals Organic matter Food science 10. No inequality 030304 developmental biology 2. Zero hunger chemistry.chemical_classification 0303 health sciences Meal Dose-Response Relationship Drug Hatching Agricultura 0402 animal and dairy science 04 agricultural and veterinary sciences General Medicine Animal Feed 040201 dairy & animal science Diet Medio Ambiente Liver chemistry Animal Nutritional Physiological Phenomena Digestion Female Animal Science and Zoology Composition (visual arts) Chickens |
| Zdroj: | Poultry Science, ISSN 0032-5791, 2014-11, Vol. 93, No. 11 Archivo Digital UPM Universidad Politécnica de Madrid |
| Popis: | The influence of source and level of inclusion of raw glycerin (GLYC) in the diet on growth performance, digestive traits, total tract apparent retention (TTAR), and apparent ileal digestibility of nutrients was studied in broilers from 1 to 21 d of age. There was a control diet based on corn and soybean meal and 8 additional diets that formed a 2 × 4 factorial with 2 sources of GLYC and 4 levels of inclusion (2.5, 5.0, 7.5, and 10%). The GLYC used were obtained from the same original batch of soy oil that was dried under different processing conditions and contained 87.5 or 81.6% glycerol, respectively. Type of processing of the GLYC did not affect any of the variables studied except DM and organic matter retention (P < 0.05) that was higher for the 87.5% glycerol diet. From d 1 to 21, feed conversion ratio (FCR) improved linearly (L, P ≤ 0.01) as the GLYC content of the diet increased, but ADG was not affected. On d 21, the relative weight (% BW) of the liver and the digestive tract increased (L, P < 0.01) as the level of GLYC in the diet increased, but lipid concentration in the liver was not affected. The TTAR of DM and organic matter increased quadratically (Q, P < 0.05) and the AME(n) content of the diet increased linearly (L, P < 0.01) with increases in dietary GLYC. Also, the apparent ileal digestibility of DM (L, P < 0.05; Q, P = 0.07) and gross energy (L, P < 0.01) increased as the GLYC content of the diet increased. It is concluded that raw GLYC from the biodiesel industry can be used efficiently, up to 10% of the diet, as a source of energy for broilers from 1 to 21 d of age and that the energy content of well-processed raw GLYC depends primarily on its glycerol content. |
| Databáze: | OpenAIRE |
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