Artículos de revistas
Metabolizable energy and oil intake in brown commercial layers
Fecha
2012Registro en:
REVISTA BRASILEIRA DE ZOOTECNIA, VICOSA, v. 41, n. 10, pp. 2232-2237, OCT, 2012
1516-3598
10.1590/S1516-35982012001000014
Autor
Silva, Amadeu Benedito Piozzi da
Garcia, Edivaldo Antonio
Molino, Andrea de Britto
Silva, Elyara Maria Pereira da
Institución
Resumen
With the objective to establish the best metabolizable energy (ME) intake for layers, and the best dietary vegetable oil addition level to optimize egg production, an experiment was carried out with 432 30-week-old Hisex Brown layers. Birds were distributed into nine treatments with six replicates of eight birds each according to a 3 x 3 factorial arrangement, consisting of three daily metabolizable energy intake (280, 300 or 320 kcal/bird/day) and three oil levels (0.00; 0.75 and 1.50 g/bird/day). Daily feed intake was limited to 115, 110 and 105 g/bird in order to obtain the desired energy and oil intake in each treatment. The following parameters were evaluated: initial weight, final weight, body weight change, egg production, egg mass, feed conversion ratio per dozen eggs and per egg mass and energy conversion. There was no influence of the treatments on egg production (%) or egg mass (g/bird/day). Final weight and body weight change were significantly affected by increasing energy intake. Feed conversion ratio per egg mass, feed conversion ratio per dozen eggs and energy conversion significantly worsened as a function of the increase in daily energy intake. An energy intake of 280 kcal/bird/day with no addition of dietary oil does not affect layer performance.