| Autor: |
Silva NCD; Universidade Federal de Goiás, Departamento de Zootecnia, Campus II Samambaia, Rodovia Goiânia - Nova Veneza, Km 8, 74690-900 Goiânia, GO, Brazil., Cabral Filho SLS; Universidade Federal de Brasília, Departamento de Zootecnia, Rural Core, Campus Darcy Ribeiro, Asa Norte, 70910-900 Brasília, DF, Brazil., Santos RSD; Universidade Federal de Brasília, Departamento de Zootecnia, Rural Core, Campus Darcy Ribeiro, Asa Norte, 70910-900 Brasília, DF, Brazil., Silva CJD; Universidade Federal de Brasília, Departamento de Zootecnia, Rural Core, Campus Darcy Ribeiro, Asa Norte, 70910-900 Brasília, DF, Brazil., Cardoso RB; Universidade Federal de Goiás, Departamento de Zootecnia, Campus II Samambaia, Rodovia Goiânia - Nova Veneza, Km 8, 74690-900 Goiânia, GO, Brazil., Silva BDM; Empresa Brasileira de Pesquisa Agropecuária, Departamento Recursos Genéticos e Biotecnologia, Biological Station Park, Avenida W5, Norte (Final), 70770-900 Brasília, Brazil., Ribeiro MD; Universidade Federal de Goiás, Departamento de Zootecnia, Campus II Samambaia, Rodovia Goiânia - Nova Veneza, Km 8, 74690-900 Goiânia, GO, Brazil. |
| Abstrakt: |
Concentrated supplementation of ewes is a strategy to increase productivity. The objective was to evaluate the effects of supplementation in the diet of ewes before, during and in the final third of pregnancy and lactation on, the performance and production and composition of colostrum and milk. Forty animals were distributed in a completely randomized design, into the following treatments: CONT = control treatment with mineral salt supplementation only, SSREPRO = supplementation started 20 days before the estrus synchronization (ES) protocol, SSPREG = suplementação a partir da confirmação da gestação (60 days after ES), and SEPREG = supplementation in the third end of pregnancy (90 days after ES). Supplementation adoption changed (P < 0.05) the intake of organic matter, crude protein, neutral detergent fiber, the percentage of total digestible nutrients, and digestibility of dry matter, acid detergent fiber, non-fiber carbohydrates, and ether extract with their respective intake, in addition to colostrum and milk production and composition and animal performance. No difference (P > 0.05) was observed for organic matter, crude protein, and neutral detergent fiber digestibility and total digestible nutrient intake. Thus, supplementation in the final third of pregnancy may result in heavier lambs at weaning, reduction in slaughter time. |
