scholarly journals In vitro dry matter disappearance using roe deer inocula from summer and winter

Rangifer ◽  
1993 ◽  
Vol 13 (4) ◽  
pp. 143 ◽  
Author(s):  
Øystein Holand

In vitro dry matter disappearance (IVDMD) of 12 forages were determined using ruminai inocula from 10 European roe deer (Capreolus capreolus L.) collected in summer and winter. There was significant difference in the ability of winter and summer inocula to digest winter and summer forages respectively. Each of the 6 summer forages had a significantly higher IVDMD in ruminal inocula of animals collected in summer versus winter. However, no significant difference in IVDMD of winter versus summer inocula was observed for each of the 6 winter forages. These results suggest adaption, although limited, by ruminal microorganisms in roe deer to winter forages or a potential problem in standard in vitro laboratory procedures when using animals on a high-fiber diet as inocula donors.

Rangifer ◽  
1985 ◽  
Vol 5 (2) ◽  
pp. 6 ◽  
Author(s):  
C. Rehbinder ◽  
P. Ciszuk

<p>In order to increase the fodder available for roedeer during wintertime, late harvested hay was placed on racks early in November in three consecutive years. Freeezing kept the hay dry and fresh during all three winters. In the first winter, with much snow, the bulk of the hay was consumed whereas consumption in the two subsequent mild winters was low and selective. The crude protein content of the hay was low (3.5 - 8.4% dry matter). Metabolizable energy estimated from digestion in vitro was 3.5 &mdash; 5.6 MJ per kg dry matter. Rumen liquor from roe deer during a mild winter gave lower in vitro digestion than liquor from sheep fed with ordinary rations. The value of this poor hay for roe deer is discussed with respect to the animals requirements, seasonal adaption, the energy and protein content of the hay, water consumption and normal behavior. The results indicate that late harvested hay may be more suitable than regularly harvested hay or concentrates to help roe deer to survive spells of severe winter conditions. With late harvested hay placed out at several localized feeding sites, the risks of indigestion and dehydration, associated with a more concentrated, feed, are minimized and the ranking among the roe deer in particular will be less important and thus more animals will have improved prospects of gaining access to the fodder.</p><p>Tilskottsutfodring av r&aring;djur (Capreolus capreolus L) med sent skordat ho. En pilotstudie.</p><p>Abstract in Swedish / Sammanfattning: I avsikt att, for r&aring;djur, oka m&aring;ngden tillg&aring;ngligt foder under vintertid, skordades och h&aring;ssjades ho i borjan av november under tre p&aring; varandra foljande &aring;r. Hoet fros torn och holl sig f&aring;rskt alla vintrarna. Forst&aring; vintern med mycket sno konsumerades huvuddelen av hoet medan de tv&aring; foljande milda vintrarna konsumptionen var l&aring;g och selektiv. M&aring;ngden r&aring;protein i hoet var l&aring;gt (3.5 &mdash; 8.4 % i torrsubstans). Inneh&aring;llet av oms&aring;ttbar energi ber&aring;knad fr&aring;n digestion in vitro var 3.5 &mdash; 5.6 MJ per kg torrsubstans. V&aring;mv&aring;tska fr&aring;n r&aring;djur under en mild vinter gav lagra in vitro digestion &aring;n v&aring;mv&aring;tska fr&aring;n ordin&aring;rt utfodrade f&aring;r. V&aring;rdet av det mycket sent skordade hoet for r&aring;djur diskuteras med utg&aring;ngspunkt fr&aring;n djurens behov, s&aring;songm&aring;ssiga adaption, energi- och proteininneh&aring;ll i hoet, vattenkonsumtion och normala beteende. Resultat&eacute;n pekar p&aring; att, sent skordat ho kan vara l&aring;mpligare &aring;n p&aring; normal tid skordat ho eller kraftfoder att hj&aring;lpa r&aring;djur att overleva perioder med sv&aring;ra vinterforh&aring;llanden. Med sent skordat och h&aring;ssjat ho, vilket gjorts tillg&aring;ngligt p&aring; ett flertal utfodringsplatser, minskar riskerna for v&aring;mindigestion och dehydrering, forenade med en mer hogv&aring;rdig utfodring, samtidigt som djurens inbordes rangordning blir mindre betydelsefull. Det senare innebarande att fler djur f&aring;r tillg&aring;ng till fodret.</p>


1985 ◽  
Vol 63 (5) ◽  
pp. 1023-1026
Author(s):  
Frederick A. Servello ◽  
Sandra L. MacPherson ◽  
Roy L. Kirkpatrick ◽  
Kenneth E. Webb Jr.

A Van Soest analysis of feed and fecal samples from 24 digestion trials with pine voles (Microtus pinetorum) and 18 digestion trials with meadow voles (Microtus pennsylvanicus) was used to examine the digestive capabilities of these species and the effect of feed constituents on fiber digestion. The neutral detergent soluble fraction of feeds and forages (NDS) was the most readily available for voles. Percent neutral detergent fiber (NDF) digestibility was variable and inversely related (P = 0.0001) to the percent NDF of the diets for both pine and meadow voles. NDF digestibility was not related (P > 0.30) to the percentage of lignin in the NDF or acid detergent fiber (ADF). NDF digestion accounted for 15 and 21% of the dry matter digested by pine voles and meadow voles, respectively, on a high fiber diet (40% NDF).


Sign in / Sign up

Export Citation Format

Share Document