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| Tovo Neto,Aldo; Bittarello,Alis Correia; Tovo,Rogério Paulo; Meurer,Fábio; Santos,Lilian Dena dos; Bombardelli,Robie Allan. |
| ABSTRACT This experiment was conducted in outdoor tanks to evaluate the effect of inclusion of ractopamine at increasing levels (0, 4, 8, 12, and 16 mg kg−1) as additive in Nile tilapia (Oreochromis niloticus) diet in the final grow-out period (750-920 g) during 31 days. Therefore, 400 fish were housed into 20 experimental tanks, in a completely randomized design with five treatments and four replications. Growth performance, body yield, and chemical composition of fish muscle and organs were evaluated. Fish fed diets containing up to 16 mg kg−1 of ractopamine for 31 days did not improve growth or performance parameters. However, lipid percentage of abdominal muscle was different in fish fed ractopamine, reaching the lowest level of 199.3 g kg−1 of ether... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Beta-adrenergic; Feed additive; Fish nutrition; Growth promoters. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982017000500367 |
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| Barbosa,E.M.J.; Bridi,A.M.; Novais,A.K.; Santos,R.K.S.; Frederico,G.; Alves,J.B.; Barata,C.C.P.; Santos,E.R.; Silva,C.A.. |
| ABSTRACT The objective of this study was to evaluate the effects of compensatory gain associated with the use of 10ppm ractopamine after a period of feed restriction in finishing pigs on performance, carcass and meat quality. Twenty castrated males and 20 females, at 110 days of age and 66.137±6.13kg live weight, were submitted to four treatments using a 2 x 2 factorial design (fed ad libitum or with 20% restriction between 0(21 days of age and fed with or without 10ppm ractopamine for 22(42 days of experimentation), with 10 replicates (animals). There was no interaction between the factors for any of the evaluated parameters. Animals treated with ractopamine presented better weight gain (1.083 versus 1.259kg), feed conversion (2.910 versus 2.577), warm... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Swine; Beta-adrenergic; Fat; Food management; Weight gain. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000601660 |
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