| Autor: |
Faria AC; Grupo de Estudos em Pecuária Integrada-GEPI, Universidade Federal de Mato Grosso, Sinop 78550-728, Mato Grosso, Brazil., Bolson DC; Departamento de Pesquisa e Desenvolvimento da Fortuna Nutrição Animal, MT-320 km 198 Zona Rural, Nova Canaã do Norte 78515-000, Mato Grosso, Brazil., Pina DDS; Animal Science Department, Universidade Federal da Bahia, Salvador 40170-115, Bahia, Brazil., Prado TA; Departamento de Pesquisa e Desenvolvimento da Fortuna Nutrição Animal, MT-320 km 198 Zona Rural, Nova Canaã do Norte 78515-000, Mato Grosso, Brazil., Roecker AN; Grupo de Estudos em Pecuária Integrada-GEPI, Universidade Federal de Mato Grosso, Sinop 78550-728, Mato Grosso, Brazil., Chaves CS; Grupo de Estudos em Pecuária Integrada-GEPI, Universidade Federal de Mato Grosso, Sinop 78550-728, Mato Grosso, Brazil., Pereira DH; Grupo de Estudos em Pecuária Integrada-GEPI, Universidade Federal de Mato Grosso, Sinop 78550-728, Mato Grosso, Brazil. |
| Abstrakt: |
The objective of this study was to evaluate the effect of different nutritional strategies on the intensification of beef cattle farming on pastures during the dry period of the year. Eighty male cattle (testers) were randomly allocated to 16 paddocks formed with Mombaça grass ( Megathyrsus maximus ), totaling five animals (testers) per paddock. The strategies consisted of two LCs [10 and 16.7 g·kg -1 body weight (BW)] and two PSs with DDGS and SBM in a completely randomized design with a 2 × 2 factorial arrangement. The chemical, structural, and productive characteristics of the forage were evaluated, as well as the performance, productivity, and serum parameters of the supplemented animals. The forage presented a greater L:C ( p = 0.033) and CP content ( p = 0.007) when the lowest LC was used. Animals that received the highest LC had the highest supplement intake ( p < 0.001) and the lowest pasture intake ( p < 0.001). The nutritional strategy with an LC of 16.7 g·kg -1 of body weight (BW) resulted in a greater increase in total BW, i.e., 200 kg·BW ha -1 more. Therefore, higher levels of concentrate ensure greater productivity for beef cattle grazing, and DDGS can replace SBM in supplements used in the intensive raising of beef cattle on pasture without compromising the performance and productivity of the animals. |
