| Journal: | Brazilian archives of biology and technology |
| Database: | PERIÓDICA |
| System number: | 000388231 |
| ISSN: | 1516-8913 |
| Authors: | Chaves, Amalia Saturnino1 Costa, Suely de Fatima2 Melo, Leandra Queiroz de2 Pereira, Marcos Neves3 |
| Institutions: | 1Instituto Federal de Minas Gerais, Departamento de Ciencias Agrarias, Bambui, Minas Gerais. Brasil 2Universidade Federal de Lavras, Departamento de Medicina Veterinaria, Lavras, Minas Gerais. Brasil 3Universidade Federal de Lavras, Departamento de Zootecnia, Lavras, Minas Gerais. Brasil |
| Year: | 2014 |
| Season: | Sep-Oct |
| Volumen: | 57 |
| Number: | 5 |
| Pages: | 695-700 |
| Country: | Brasil |
| Language: | Inglés |
| Document type: | Nota breve o noticia |
| Approach: | Experimental |
| English abstract | Feed processing can affect rumen development in new born calves, and potentially define animal performance. Two feed management systems, extruded starter (Ruter) with possible early weaning and ground starter (control), were evaluated in thirty-two Holstein calves (16 females and 16 males). Animals were randomly assigned to the treatments using a randomized block design with birth weight as a covariate. They were weaned when starter intake reached 800 g for two consecutive days. Twenty-one days after the weaning, males were slaughtered and the stomach compartments were isolated. Rumen and omasum fragments were processed for morphological evaluation. Animal performance, clinical condition and stomach compartment weight did not differ between the treatments (P> 0.05), despite weaning weight of animals receiving extruded starter being 5.68% higher than the control animals. Extruded starter stimulated cell proliferation of the ruminal epithelium (P <0.05), but did not affect the dimensions of the papillary rumen and omasum mitotic index (MI). The Ruter feeding system was potentially beneficial for weight gain and morphofunctional rumen development in lactating animals; however, this treatment did not allow early weaning as proposed by the feeding system |
| Disciplines: | Medicina veterinaria y zootecnia |
| Keyword: | Bovinos, Nutrición animal, Becerros, Destete, Desempeño, Rumen |
| Keyword: | Veterinary medicine and animal husbandry, Animal nutrition, Bovines, Calves, Weaning, Performance, Rumen |
| Full text: | Texto completo (Ver HTML) |
