Digestibility of crude protein and nitrogen retention on preruminant calves.

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Digestibility of crude protein and nitrogen retention on preruminant calves.

Popis výsledku v původním jazyce

In the trial conducted on calves the effect of age on the apparent crude protein (CP) digestibility and retention of N was studied. The experiment was carried out on five Czech spotted male calves from 9 to 91 days of age. Digestibility was determined in23 three-day balance periods by the chromic oxide indicator method. In all balance periods it proceeded one 24-hour period in which the urine was quantitatively collected. The calves were fed on milk replacer three times a day ad semi-libitum. The average value of CP digestibility was 64.2 ? 1.618 %.The CP digestibility and N retention significantly changed with age of calves. The dependence of coefficients of digestibility or retention (Y) on age in days (X) was expressed by the 2nd degree parabola equation with a maximum on Day 74, 81 and 63 for the CP digestibility, N intake retention and N digested retention, respectively. The calves utilised on the average 61.5 ? 1.416 % of the nitrogen intake and 89.5 ? 2.146 % of the N digested.

Název v anglickém jazyce

Digestibility of crude protein and nitrogen retention on preruminant calves.

Popis výsledku anglicky

In the trial conducted on calves the effect of age on the apparent crude protein (CP) digestibility and retention of N was studied. The experiment was carried out on five Czech spotted male calves from 9 to 91 days of age. Digestibility was determined in23 three-day balance periods by the chromic oxide indicator method. In all balance periods it proceeded one 24-hour period in which the urine was quantitatively collected. The calves were fed on milk replacer three times a day ad semi-libitum. The average value of CP digestibility was 64.2 ? 1.618 %.The CP digestibility and N retention significantly changed with age of calves. The dependence of coefficients of digestibility or retention (Y) on age in days (X) was expressed by the 2nd degree parabola equation with a maximum on Day 74, 81 and 63 for the CP digestibility, N intake retention and N digested retention, respectively. The calves utilised on the average 61.5 ? 1.416 % of the nitrogen intake and 89.5 ? 2.146 % of the N digested.

Druh

D - Stať ve sborníku

CEP obor

GH - Výživa hospodářských zvířat

OECD FORD obor

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Projekt

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2001

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Book of Abstracts of the 52nd Annual Meeting of the European Association for Animal Production

ISBN

90-769-980-19

ISSN

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e-ISSN

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Počet stran výsledku

1

Strana od-do

109-109

Název nakladatele

Wageningen Pers

Místo vydání

Budapest

Místo konání akce

Budapest, Hungary

Datum konání akce

1. 1. 2001

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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