Data/hora: 10/06/2024 02:32:51

Biblioteca(s): | Embrapa Pantanal.
Data corrente: | 20/03/2002
Data da última atualização: | 19/07/2018
Autoria: | CAMPOS, O. F. de.
Afiliação: | Michigan State University.
Título: | Sray dried fish solubles, soy protein concentrate and limestone in milk replacers for young calves.
Ano de publicação: | 1982
Fonte/Imprenta: | Michigan: Michigan State University, 1982.
Páginas: | 126p.
Idioma: | Inglês
Notas: | Ph.D. Thesis.
Conteúdo: | In a first experiment, 168 Holstein calves at Cornell, Kansas State and Michigan State Universities were used to test the partial substitution of spray-dried fish solubles (SDFS) and soy protein concentrate (SPC) for milk protein (MP) in milk replacers. Calves were placed on experiment between 3 and 8 days of age and were fed experimental diets as the only source of nutrients for 6 weeks. Replacers were reconstituted with water to 14% solids and fet at 8, 9, 10, 11, 12 and 12% body weight from 1st to 6th week. Calves were fed twice daily from open pails. Experimental diets consisted of (1) 13% crude protein (CP) as MP; (2) 19% CP as MP; (3) 19% CP, 13% MP, 6% SDFS; (4) 19% CP, 13% MP, 6% SPC; (5) 19% CP, 13% MP, 3% SDFS; (6) 23% CP as MP; and, (7) 23% CP, 13%MP, 10% SDFS. Average daily body weight gains were higher for diets containing higher levels of MP (2 and 6), intermediate for 4 containing 6% CP from SPC, and lower for the negative control (diet 1) and those containing SDFS. Fecal socres, treatment for sicknesses, and rectal temperatures were higher for diets containing SDFS. Plasma amino acids sampled when calves were 3 and 6 weeks old showed higher total essential amino acids for 19 and 23% THAN 13% MP or milk substitute diets. Xylose absorption test at 6 weeks failed to reveal impaired capacity for gut absorption due to feeding lower quality protein. On diet 7, mortality rate was 30% compared to a mean of 12% for other diets, indicating that 10% protein from SDFS was excessive. The second experiment...
Palavras-Chave: | Dairy calf; Dieta alimentar; Enzyme; Milk protein; Protein digestion; Spray-dried fish solubres.
Thesagro: | Digestibilidade; Leite; Nutrição Animal; Proteína; Soja.
Thesaurus Nal: | diet; digestibility; fish products; nutrition; soybean products.
Categoria do assunto: | --
Registro original: | Embrapa Pantanal (CPAP)
Exemplares: | CPAP - (33783-1) - ADD - TS - PP - TS89.00276 -  - 1989.00276 - DIS