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Levels of supplementation of inorganic selenium and vitamin E for meat quail aged 0 to 14 and 14 to 35 days

Author:
Zancanela, V., Furlan, A. C., Pozza, P. C., Marcato, S. M., Grieser, D. O., Stanquevis, C. E., Finco, E. M., Oliveira‐Bruxel, T. M., Ferreira, M. F. Z.
Source:
Journal of animal physiology and animal nutrition 2018 v.102 no.2 pp. e918
ISSN:
0931-2439
Subject:
carcass yield, diet, feed conversion, feed intake, meat, quails, selenium, vitamin E, weight gain
Abstract:
Two experiments were carried out to determine the levels of supplementation of inorganic selenium (Se) and vitamin E (VE) in diets of quails aged 0–14 and 14–35 days old. A completely randomized design was used in a factorial design (Se = 0.1125; 0.2250; 0.3375 and 0.4500 mg kg⁻¹ diet⁻¹ × VE = 10; 23; 36 and 49 IU kg⁻¹ diet⁻¹). In experiment 1, quail (n = 2,400) were aged 0–14 days and were divided into 16 treatments, with three replicates of 50 birds. In experiment 2, quail (n = 1,680) were aged 14–35 days and were divided into the same treatments, with three replicates of 35 birds. At age 0–14 days, the levels of VE did not affect performance (p > .05); however, the feed conversion (FC) was influenced by a quadratic effect (p = .0515), according to the level of Se, with a higher level estimated at 0.29 mg Se kg⁻¹ diet⁻¹. At age 14–35 days, there was a linear effect with interaction (Se × VE), for FC (p = .0150) and weight gain (WG; p = .0266). FC (Se, p = .0048 and VE, p = .0019) and WG (Se, p = .0049 and VE, p = .0068) improved linearly with increasing levels of Se and VE. The feed intake (FI) decreased linearly (p = .0582) as a function of VE. The carcass yield showed a quadratic effect (p = .0056) on the levels of VE, with a higher yield estimation of 27.24 IU VE/kg of diet. It can be concluded that the optimum level of supplementation at age 0–14 days was 0.29 mg Se kg⁻¹ diet⁻¹ and 10 IU VE kg⁻¹ diet⁻¹ and at age 14–35 days, it was 0.4500 mg Se kg⁻¹ diet⁻¹ and 49 IU of VE kg⁻¹ diet⁻¹.
Agid:
5898791