By Rex A. Dunham
The genetic development of fish for aquaculture and similar fisheries is a box of study that has obvious enormous advances lately. but there isn't any ebook which supplies an obtainable assessment of the topic. This publication goals to fill this hole and should be appropriate for complex scholars and researchers in animal genetics, fish biology and aquaculture.
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Additional info for Aquaculture and Fisheries Biotechnology, CABI Publishing
However, proximate body composition was no different in juvenile diploid and triploid rainbow trout (Oliva-Teles and Kaushik, 1990a). Hussain et al. (1995) did not detect differences between triploid and diploid Nile tilapia for biochemical composition. , 1988). After maturation, fat in the muscle decreased rapidly for all treatments except that triploids fed a high-fat diet continued to accumulate fat in the muscle. , 1987). Female triploid tench had large visceral fat deposits and males had fat deposits along the connective-tissue capsule (Flajshans, 1997).
The period between activation of the genome and gastrulation, however, remains unchanged and organogenesis will probably begin with a reduced number of precursor cells (Chulitskava, 1970; Kobayakawa and Kubota, 1981). This may cause initial aberrant embryonic development, which may ultimately affect growth in juvenile ﬁsh. No difference in growth is another potential outcome. There was no difference in the growth of triploid and diploid land-locked Atlantic salmon, although triploids were longer and had a lower condition factor than diploids (Benfey and Sutterlin, 1984b,c).
Total mineral content was highest for the triploids. Flavour evaluations were not conducted but, based on this analysis, might be highest for diploids outside the spawning season, intermediate for triploids and lowest for diploids during the spawning season. Flesh colour is another important carcass trait for salmonids. Triploidy did not induce ﬂesh-colour changes of economic importance in rainbow trout, and both genotypes showed a similar ability to ﬁx canthaxanthin (Choubert and Blanc, 1985).