| Journal: | Revista brasileira de ciencia avicola |
| Database: | PERIÓDICA |
| System number: | 000279226 |
| ISSN: | 1516-635X |
| Authors: | Dahlke, Fabiano1 Ribeiro, A.M.L2 Kessler, Alexandre de Mello Lima, A.R Maiorka, Alex3 |
| Institutions: | 1Universidade Estadual Paulista "Julio de Mesquita Filho", Faculdade de Ciencias Agrarias e Veterinarias, Jaboticabal, Sao Paulo. Brasil 2Universidade Federal do Rio Grande do Sul, Faculdade de Agronomia, Porto Alegre, Rio Grande do Sul. Brasil 3Universidade Federal do Parana, Departamento de Zootecnia, Curitiba, Parana. Brasil |
| Year: | 2003 |
| Season: | Ene-Abr |
| Volumen: | 5 |
| Number: | 1 |
| Pages: | 61-67 |
| Country: | Brasil |
| Language: | Inglés |
| Document type: | Nota breve o noticia |
| Approach: | Experimental |
| English abstract | The objective of this experiment was to investigate the effects of different particle sizes, expressed as Geometric Mean Diameter (GMD) of corn (0.336mm, 0.585mm, 0.856mm and 1.12mm) of mash and pelleted broiler chicken diets on the weight of the gizzard, duodenum and jejunum+ileum; on the pH of the gizzard and small intestine and on the characteristics of the duodenal mucous layer (number and height of villi and crypt depth) in 42-day-old broilers. The physical form and the particle size of the diet had no significant effect on gizzard and intestine pH (p > 0.05). A greater gizzard weight was seen in the birds receiving pelleted diet and particle size of 0.336mm (p < 0.008). However, for the particle sizes of 0.856 and 1.12 mm, a greater weight was found in birds that received mash diet (p < 0.039 and p < 0.006, respectively). Also, gizzard weight was greater with increasing corn GMD independent of the physical form of the diet. In the mash diet, the increase in particle size promoted a quadratic response in the weight of duodenum and jejunum + ileum. The pelleted diet promoted a greater number of villi per transverse duodenum cut (p < 0.007) and greater crypt depth (p < 0.05). As the particle size increased, there was a linear increase of villus height and crypt depth in the duodenum, irrespective of the physical form of the diet |
| Disciplines: | Medicina veterinaria y zootecnia, Biología |
| Keyword: | Nutrición animal, Fisiología animal, Pollos de engorda, Maíz, Tamaño, Sistema digestivo, pH, Composición corporal |
| Keyword: | Veterinary medicine and animal husbandry, Biology, Animal nutrition, Animal physiology, Broilers, Corn, Size, Digestive system, pH, Body composition |
| Full text: | Texto completo (Ver HTML) |
