Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.5/8211
Título: Efeito do rácio triptofano:lisina em regimes de baixa proteína no crescimento de suínos entre os 20-40 kg de peso vivo
Autor: Roxo, Alexandre Manuel Delgado
Orientador: Freire, João Pedro Bengala
Palavras-chave: pigs
crude protein
tryptophan:lysine ratio
intake
average daily gain
feed conversion ratio
Data de Defesa: 2014
Editora: ISA/UL
Citação: Roxo, A.M.D. - Efeito do rácio triptofano:lisina em regimes de baixa proteína no crescimento de suínos entre os 20-40 kg de peso vivo. Lisboa: ISA, 2014, 80 p.
Resumo: The effect of different standardized ileal digestible tryptophan:lysine ratios, in diets with low crude protein on the zootechnical performances of pigs between 20 and 40 kg, was studied using 120 pigs in a five week trial. The 120 pigs were allotted to four experimental diets, 30 animals per diet and placed in cages in groups of 3 pigs per cage. Diet 1 was the control diet, with a level of 16,5% crude protein and standardized ileal digestible tryptophan:lysine ratio of 20,7%; diets 2, 3 and 4 were diets with a low crude protein level (14,5%) and the standardized ileal digestible tryptophan:lysine ratios were 17,4%, 20,5% and 23,5%, respectively. The average daily feed intake and the average daily gain decreased in pigs fed diet 2 compared to pigs fed diet 1 (P=0,0432; P=0,0187, respectively). The average daily feed intake, average daily gain and feed conversion ratio were not significantly different between diets 1 and 3 and between diets 3 and 4. These results suggest that it is possible to reduce the level of crude protein in two percentage points, as long as balance is maintained in the standardized ileal digestible tryptophan:lysine ratio at 20,5%
Descrição: Mestrado em Engenharia Zootécnica - Produção Animal - Instituto Superior de Agronomia / Faculdade de Medicina Veterinária
URI: http://hdl.handle.net/10400.5/8211
Aparece nas colecções:BISA - Dissertações de Mestrado / Master Thesis

Ficheiros deste registo:
Ficheiro Descrição TamanhoFormato 
Tese (Versão Definitiva).pdf3,02 MBAdobe PDFVer/Abrir


FacebookTwitterDeliciousLinkedInDiggGoogle BookmarksMySpace
Formato BibTex MendeleyEndnote Degois 

Todos os registos no repositório estão protegidos por leis de copyright, com todos os direitos reservados.