Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Nutritional influence of broiler chicken diets based on covered normal, waxy and high amylose barleys with or without enzyme supplementation
Autore:
Bergh, MO; Razdan, A; Aman, P;
Indirizzi:
Swedish Univ Agr Sci, Dept Food Sci, S-75007 Uppsala, Sweden Swedish Univ Agr Sci Uppsala Sweden S-75007 Sci, S-75007 Uppsala, Sweden
Titolo Testata:
ANIMAL FEED SCIENCE AND TECHNOLOGY
fascicolo: 3-4, volume: 78, anno: 1999,
pagine: 215 - 226
SICI:
0377-8401(199904)78:3-4<215:NIOBCD>2.0.ZU;2-S
Fonte:
ISI
Lingua:
ENG
Soggetto:
BETA-GLUCANASE SUPPLEMENTATION; NUTRIENT DIGESTIBILITY; INTESTINAL VISCOSITY; CHEMICAL-COMPOSITION; STARCH; FIBER; PERFORMANCE;
Keywords:
enzymes; barley cultivars; ileal digestibility; production response; plasma lipids; chicken-broiler;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
34
Recensione:
Indirizzi per estratti:
Indirizzo: Bergh, MO Swedish Univ Agr Sci, Dept Food Sci, POB 7051, S-75007 Uppsala, Sweden Swedish Univ Agr Sci POB 7051 Uppsala Sweden S-75007 la, Sweden
Citazione:
M.O. Bergh et al., "Nutritional influence of broiler chicken diets based on covered normal, waxy and high amylose barleys with or without enzyme supplementation", ANIM FEED S, 78(3-4), 1999, pp. 215-226

Abstract

A total of 384 day-old broiler chickens were fed unpelleted diets based oncovered barley cultivars (696 g/kg) with normal (Golf) high amylose (HAG) and high amylopectin (waxy) starch for a total of 18 days. Diets were fed ad libitum without or with supplementation of a commercial enzyme preparation containing beta-glucanase activity. Normal diets were found to contain approximately 30 g/kg total beta-glucan while the HAG and waxy diets contained approximately 40 g/kg total beta-glucan. Soluble beta-glucan was found toaccount for approximately 48%, 36% and 49% of the total beta-glucan content of the normal, HAG and waxy diets, respectively. Generally birds fed the normal diets weighed more, consumed more feed and had lower feed conversionratios than animals fed the HAG and waxy diets, respectively, at 13 days of age. Enzyme supplementation of diets generally increased chicken body weights and feed intakes, improved feed conversion ratios (g feed/g weight gain) and increased total (16% increase on average) and (HDL-cholesterol) concentrations in comparison to birds provided diets without enzyme. The ileal digesta dry matter content was increased by enzyme supplementation. Ileal digestibility of nutrients was generally improved among chickens given enzyme supplemented diets when compared to animals fed diets without enzyme, thegreatest increase in ileal fat digestibility (19% increase) and ileal starch digestibility (9% increase) being observed among animals given the enzyme supplemented waxy diet in comparison to the unsupplemented waxy diet. Theileal digestibility of total beta-glucan was also improved by enzyme supplementation and it was concluded that the beta-glucanase used in this study may have reduced beta-glucan-enhanced intestinal viscosity or nutrient encapsulation due to the presence of intact cell walls and thus, facilitated nutrient uptake. The ileal digestibility of starch was significantly lower among chickens fed the waxy diet without enzyme in comparison to animals fed the normal diet without enzyme but the difference was small. This difference was attributed to the effect of beta-glucan when comparisons of starch digestibility between animals fed the waxy and normal diets with enzyme supplementation were made, no significant differences were observed. (C) 1999 Elsevier Science B.V. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 24/09/20 alle ore 11:25:16