Growth performance, real-time gizzard pH and calcium solubility in the gut of broiler chickens is dependent on the interaction between dietary calcium concentration and limestone particle size
| Autor: | Michael R. Bedford, Toby Mottram, Sophie A. Lee, Erica Febery |
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| Rok vydání: | 2021 |
| Předmět: |
Male
animal structures 040301 veterinary sciences chemistry.chemical_element Calcium Calcium Carbonate 0403 veterinary science Animals Food science Particle Size Solubility Gizzard Dietary calcium 0402 animal and dairy science Broiler 04 agricultural and veterinary sciences General Medicine Hydrogen-Ion Concentration Animal Feed 040201 dairy & animal science Diet Calcium Dietary chemistry Dietary Supplements Gizzard Avian Animal Nutritional Physiological Phenomena Digestion Animal Science and Zoology Particle size Chickens Food Science |
| Zdroj: | British Poultry Science. 62:827-834 |
| ISSN: | 1466-1799 0007-1668 |
| Popis: | 1.The purpose of this study was to determine the effect of limestone particle size and dietary Ca concentration on performance, real-time gizzard pH, and Ca and P solubility in the gastrointestinal tract of 21d broiler chickens.2. A total of 576, one-day-old Ross 308 male broilers were randomly allocated among 4 treatments, with 8 replicate pens, and 18 birds per pen. Treatments were arranged as a 2 × 2 factorial consisting of two particle sizes of limestone (coarse, CL, 1200 µm; fine, FL, 44 µm) and two Ca concentrations (9.6 or 6.0 g/kg). On d 19 and 20, four birds per treatment were administered Heidelberg pH capsules and readings monitored for 3 h.3. Reducing Ca concentration from 9.6 to 6.0 g/kg had no effect on d 21 weight gain or FCR of birds fed CL; however, feeding FL at 9.6 g/kg Ca increased weight gain by 10% and reduced FCR by 5% compared to FL at 6.0 g/kg Ca ( |
| Databáze: | OpenAIRE |
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