The effect of age of pre-ruminant calves on digestibility of organic nutrients and nitrogen retention

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A_____%2F01%3A23200004" target="_blank" >RIV/62156489:_____/01:23200004 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

The effect of age of pre-ruminant calves on digestibility of organic nutrients and nitrogen retention

Popis výsledku v původním jazyce

Apparent digestibility of organic nutrients and nitrogen retention were studied in 23 three-day balance periods with five male calves of Czech Red Pied breed at the age of 9 to 91 days. Animals were fed on milk replacer ad semi-libitum. The digestibilityand N retention were determined using the chromic oxide indicator method. The average values of digestibility were as follows: CP 0.642 ? 0.0162, CF 0.776 ? 0.0104; NFE 0.940 ? 0.0027. Digestibility of nutrients under study changed highly significantly (P<0.01) with the age of calves. The dependence of determined values on age was expressed by the 2nd degree parabola equations with the maximum values on Days 62, 67 and 74 for CF, NFE and CP, respectively. The most marked increase was observed in the first weeks of experiment. Percentage of N retention changed highly significantly (P<0.01) with age and the dependencies expressed by the concave parabola equation achieved their maxima on Days 81 and 63 for N consumed and digested, respecti

Název v anglickém jazyce

The effect of age of pre-ruminant calves on digestibility of organic nutrients and nitrogen retention

Popis výsledku anglicky

Apparent digestibility of organic nutrients and nitrogen retention were studied in 23 three-day balance periods with five male calves of Czech Red Pied breed at the age of 9 to 91 days. Animals were fed on milk replacer ad semi-libitum. The digestibilityand N retention were determined using the chromic oxide indicator method. The average values of digestibility were as follows: CP 0.642 ? 0.0162, CF 0.776 ? 0.0104; NFE 0.940 ? 0.0027. Digestibility of nutrients under study changed highly significantly (P<0.01) with the age of calves. The dependence of determined values on age was expressed by the 2nd degree parabola equations with the maximum values on Days 62, 67 and 74 for CF, NFE and CP, respectively. The most marked increase was observed in the first weeks of experiment. Percentage of N retention changed highly significantly (P<0.01) with age and the dependencies expressed by the concave parabola equation achieved their maxima on Days 81 and 63 for N consumed and digested, respecti

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

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 periodika

Czech Journal of Animal Science

ISSN

1212-1819

e-ISSN

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Svazek periodika

46

Číslo periodika v rámci svazku

10

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

5

Strana od-do

449-453

Kód UT WoS článku

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EID výsledku v databázi Scopus

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