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Titolo:
Effects of dietary fat type, pentosan level and xylanase supplementation on digestibility of nutrients and metabolizability of energy in male broilers
Autore:
Danicke, S; Simon, O; Jeroch, H; Keller, K; Glaser, K; Kluge, H; Bedford, MR;
Indirizzi:
Univ Halle Wittenberg, Inst Anim Nutr & Planned Crop Storage, D-4010 Halle, Germany Univ Halle Wittenberg Halle Germany D-4010 torage, D-4010 Halle, Germany Free Univ Berlin, Inst Anim Nutr, D-1000 Berlin, Germany Free Univ BerlinBerlin Germany D-1000 Anim Nutr, D-1000 Berlin, Germany Finnfeeds, Marlborough, England Finnfeeds Marlborough EnglandFinnfeeds, Marlborough, England
Titolo Testata:
ARCHIVES OF ANIMAL NUTRITION-ARCHIV FUR TIERERNAHRUNG
fascicolo: 3, volume: 52, anno: 1999,
pagine: 245 - 261
SICI:
0003-942X(1999)52:3<245:EODFTP>2.0.ZU;2-5
Fonte:
ISI
Lingua:
ENG
Soggetto:
RYE-BASED DIETS; BETA-GLUCANASE; ENZYME SUPPLEMENTATION; FIBER VISCOSITY; GROWING RATS; CHICKENS; BARLEY; WHEAT; STARCH; PERFORMANCE;
Keywords:
broilers; dietary fat type; pentosan level; intestinal viscosity; xylanases; nutrient digestibility; metabolisable energy;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
24
Recensione:
Indirizzi per estratti:
Indirizzo: Danicke, S Braunschweig FAL, Fed Agr Res Ctr, Inst Anim Nutr, Bundesallee 50, D-38116Braunschweig, Germany Braunschweig FAL Bundesallee 50 Braunschweig Germany D-38116 y
Citazione:
S. Danicke et al., "Effects of dietary fat type, pentosan level and xylanase supplementation on digestibility of nutrients and metabolizability of energy in male broilers", ARCH ANIM N, 52(3), 1999, pp. 245-261

Abstract

A complete two by two by four factorial design was used to examine the main effects of dietary fat type (10% soya oil or 10% beef tallow), xylanase supplementation (with or without Avizyme 1300 at 1 g/kg diet) and pentosan level (7.7 g/kg, 11.0 g/kg, 14.3 g/kg and 17.6 g/kg soluble pentosans, respectively, by varying wheat/rye proportions) as well as their interactions onintestinal chyme conditions, nutrient digestibility and nutrient utilization in male broilers. Nutrient digestibilities for the total digestive tractand at various sites of small intestine were measured during the period from day 18 to 20 of age and at day 21 of age, respectively, using a marker technique. Jejunal and ileal supernatant viscosity increased in an exponential manneras dietary pentosan concentration was increased. This increase was more pronounced in tallow fed birds but was also found in enzyme treated groups albeit at a much lower level. Xylanase activity was still detectable in the ileum of birds fed enzyme supplemented diets but its activity was found to decrease as dietary pentosan content increased. Digestibility of crude protein and that of some amino acids at the terminal ileum was decreased as dietary pentosan content was increased and significantly improved by xylanase addition. No fat effect and no interactions were detected at this site. In contrast, measurements made over the whole gastrointestinal tract showed significantly lower protein and amino acid digestibility values for tallow fedbirds, and significant higher enzyme effects especially in diets with higher pentosan concentrations. Nitrogen-corrected apparent metabolizable energy (AME(N)) content and net protein utilization decreased with increasing dietary pentosan content and were significantly improved by xylanase addition and were lower in tallow fed birds. Again, xylanase effects were found to be more pronounced for tallow fed birds and at higher pentosan concentrations.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 24/09/20 alle ore 10:32:29