Gelita Flex Digestibility trial (F208) with Mink ... - Kopenhagen Fur
Gelita Flex Digestibility trial (F208) with Mink ... - Kopenhagen Fur
Gelita Flex Digestibility trial (F208) with Mink ... - Kopenhagen Fur
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Danish <strong>Fur</strong> Breeders Telephone: +45 96 13 57 00 Bank: Nordea Bank Danmark A/S<br />
Research Center Telefax: +45 97 43 52 77 SWIFT: NDEADKKK<br />
Herningvej 112 C, Tvis E-mail: pfr@pfr.dk Acct. no.: 2149-0751141270<br />
7500 Holstebro Website: www.cfc.dk CVR-no.: 15275413<br />
<strong>Gelita</strong> <strong>Flex</strong><br />
<strong>Digestibility</strong> <strong>trial</strong> (<strong>F208</strong>) <strong>with</strong> <strong>Mink</strong> (Mustela vison),<br />
Report concerning digestibility of <strong>Gelita</strong> <strong>Flex</strong> produced and delivered by Gesellshaft Für<br />
Tierernährung, Germany. The <strong>trial</strong> was ordered and paid by Gesellshaft Für Tierernährung, Germany.<br />
The purpose of the <strong>trial</strong> was to establish the apparently mink digestibilities of crude protein, crude fat,<br />
and amino acids in <strong>Gelita</strong> <strong>Flex</strong>.<br />
Material and method<br />
A samples of the <strong>Gelita</strong> <strong>Flex</strong> was received on the 3 rd of July 2003. <strong>Gelita</strong> <strong>Flex</strong> is defatted gelatine<br />
hydrolysate.<br />
The <strong>trial</strong> was conducted as a regression design, consisting of 5 groups of three animals each. Adult male<br />
mink of the colour type Scanbrown were used. The diets (table 1) contained <strong>Gelita</strong> <strong>Flex</strong> equaling from<br />
0% to 55% of the total dietary crude protein content and from 0% to 7% of the total dietary crude fat<br />
content.<br />
Table 1. Formula for diet 1 and 5 (% before addition of water)<br />
Feed ingredients Group 1 Group 5<br />
<strong>Gelita</strong> <strong>Flex</strong> 0.0 20.0<br />
Cod filét 78.1 51.6<br />
Soya oil 8.6 10.8<br />
Maize starch 8.6 11.3<br />
Glucose 1.0 1.3<br />
Cellulose 3.0 4.0<br />
Vitamin mix 0.4 0.5<br />
Mineral mix 0.5 0.6<br />
The <strong>trial</strong> consisted of a 7 days long preliminary period and a 4 days long faecal collection period. Diet<br />
allowance was 300 kcal metabolizable energy (ME) per day the first 6 days, and 250 kcal ME the last 5<br />
days.<br />
The <strong>trial</strong> was conducted from the 4 th to the 15 th of August 2003.<br />
Diets and faeces were analysed by Dansk Pelsdyr Foder A/S, Analyselaboratoriet.<br />
1<br />
<strong>Gelita</strong> <strong>Flex</strong> for <strong>Mink</strong>. <strong>Digestibility</strong> <strong>trial</strong> performed by Danish <strong>Fur</strong> Breeders Research Center
Results<br />
Chemical composition<br />
The chemical composition and digestibilities in <strong>Gelita</strong> <strong>Flex</strong> used in the <strong>trial</strong> is presented in table 2.<br />
Table 2. Chemical composition and apparently digestibilities in <strong>Gelita</strong> <strong>Flex</strong> (Mean ± SEM)<br />
Composition <strong>Digestibility</strong> SEM<br />
Dry Matter, % 59.1<br />
% of Dry Matter<br />
Crude Ash<br />
Crude Protein (N*6.25)<br />
Crude Fat<br />
Amino acids, % of CP<br />
Alanine<br />
Arginine<br />
Aspartic acid<br />
Cystine<br />
Glutamic acid<br />
Glycine<br />
Histidine<br />
Isoleucine<br />
Leucine<br />
Lysine<br />
Methionine<br />
Ornithine<br />
Phenylalanine<br />
Proline<br />
Serine<br />
Threonine<br />
Tryptophan<br />
Tyrosine<br />
Valine<br />
10.5<br />
89.3<br />
5.8<br />
7.81<br />
6.84<br />
5.87<br />
0.27<br />
10.34<br />
17.86<br />
1.49<br />
1.63<br />
3.66<br />
4.37<br />
0.88<br />
0.12<br />
2.18<br />
9.83<br />
3.30<br />
2.23<br />
0.17<br />
1.65<br />
3.06<br />
2<br />
<strong>Gelita</strong> <strong>Flex</strong> for <strong>Mink</strong>. <strong>Digestibility</strong> <strong>trial</strong> performed by Danish <strong>Fur</strong> Breeders Research Center<br />
-<br />
87<br />
71<br />
92<br />
96<br />
58<br />
19<br />
89<br />
89<br />
83<br />
90<br />
91<br />
93<br />
86<br />
-<br />
86<br />
91<br />
87<br />
81<br />
59<br />
91<br />
90<br />
-<br />
0.8<br />
14.3<br />
Feed left overs and faeces consistency<br />
Two animals was excluded from the data analysis because of low feed intake. The remaining animals<br />
had varying feed left overs. The reduced feed intake was not related to the inclusion of <strong>Gelita</strong> <strong>Flex</strong>, but<br />
caused by high ambient temperature.<br />
Consistency of faeces was optimal for all animals.<br />
<strong>Digestibility</strong><br />
In <strong>Gelita</strong> <strong>Flex</strong> the apparently digestibility of crude protein was 87%, while the true digestibility was<br />
calculated to 91%.<br />
At the maximum inclusion of <strong>Gelita</strong> <strong>Flex</strong>, fat from <strong>Gelita</strong> <strong>Flex</strong> only made up 7% of the total dietary fat<br />
content as a consequence of the low content of fat in <strong>Gelita</strong> <strong>Flex</strong>. Hence, the statistically confidence of<br />
the measured digestibility of crude fat (71%) is low (high SEM).<br />
The apparently digestibilities of the amino acids is presented in table 2. Like for the fat digestibility, the<br />
high SEM on the measured digestibility of Cystine og Tryptophan is a consequence of the relatively low<br />
content of these amino acids in <strong>Gelita</strong> <strong>Flex</strong>.<br />
*********<br />
06/10/03<br />
Carsten Hejlesen<br />
0.6<br />
0.5<br />
1.6<br />
14.0<br />
0.9<br />
0.4<br />
1.5<br />
1.4<br />
1.1<br />
0.8<br />
1.3<br />
-<br />
1.6<br />
0.5<br />
1.2<br />
2.2<br />
10.2<br />
1.5<br />
1.4