Fróðskaparrit - 01.01.1958, Side 15

Fiti í sild
21
and the shrinkage by salting the fat content of salted herring is slightly
higher than that of fresh herring.
7. table shows the size of the herring during the períod 1953—1957.
It appears that the quantity of big herring (minimura weight: 255 g
pr. salted herring) has decreased from 95 per cent of the total production
in 1953 to 47,6 per cent in 1957. At the same time the quantity of
middle=sized and small herring increased considerably.
A few samples of fjordherring has been examined. The result shown
in 8. table seems to demonstrate that the content of fat of fjordherring
has a similar seasonal variation as in Atlanto<Scandian herring. Difference
of fat content of big and small herring is so considerable at the same
season (samples no. 13 and no. 14) that future investigation will have
to divide the material into different size^groups examining each group
separately.
BÓKMENTIR
1. Bramsnæs, F., Mogensen, E. og Birnøe, K. E. 1954. Fedtbestems
melser i sild, brisling og makrel 1949—1952. Meddelelse fra Fiskeris
ministeriets Forsogslaboratorium.
2. Devold, F. 1952. A contribution on the study of the migrations
of the Atlanto=Scandian herring. Rapp. et. Proc. Verb. 131.
3. Devold, F. 1953. Togter med «G. O. Sars» i Norskehavet. Fiskets
Gang, 19
4. Einarsson, H., Stefánsson, U. 1953. Rannsóknir á fitiinnhaldi sunn>
ansíldar. Fjølrit fiskideildar nr. 3.
5. Einarsson, H. 1956. The icelandic herring and racial problems.
Rapp. et. Proc. Verb., 143.
6. Friðriksson, Á. 1956. The tripes in the North Coast herring of
Iceland with special reference so the period 1948—1955. Rapp. et.
Proc. Verb., 143.
7. Frióriksson, Á. 1958. Norðurlandssíldin 1957. Ægir nr. 11 og nr. 12.
8. Hoydal, K. 1952. Kannan av fiti í sild. Fróðskaparrit bls. 104—113.
9. Marty, Ju. Ju. 1956. Race Formation and marine herring races
biological premises. Rapp. et Proc. Verb. 143.
10. Villmark, F. 1953, 1954, 1955, 1956, 1957 og 1958. Analyser utfør*
ved analyselaboratoriet. Fiskeridirektoratets kjemiskstekniske forskt
ningsinstitutt.