T J Varghese
Articles written in Proceedings – Animal Sciences
Volume 88 Issue 3 June 1979 pp 209-216
A comparative study of the growth rates of three Indian major carp hybrids, namely, catla-rohu, mrigal-catla and mrigal-rohu, was made. The results showed that the growth of catla-rohu hybrid was the fastest followed by mrigal-catla while mrigal-rohu hybrid exhibited the poorest growth rate. Compared to the growth of mrigal-rohu hybrid, the increases in weight of catla-rohu and mrigal-catla hybrids were respectively 257·58% and 110·90% more. On statistical analysis of the growth data it was seen that the growth rates of the three hybrids studied differed significantly from one another.
Volume 89 Issue 5 September 1980 pp 419-429
Two major carp hybrids, namely, catla-rohu and rohu-catla, were produced by crossing male catla with female rohu and male rohu with female catla, respectively. The taxonomic characters of the two hybrids were studied and compared with those of the parental species, catla and rohu. The two hybrids were intermediate between the parental species for most of the taxonomic characters. In both the hybrids, the body was deeper than in rohu and the head smaller than in catla. This combination of characters makes the hybrids more desirable breeds than either parent. In both the hybrids, the mouth was terminal and only the lower lip was slightly fringed. They possessed a pair of short maxillary barbels. The two hybrids catla-rohu and rohu-catla resemble each other, the difference being noticed only in a couple of minor characters.
Volume 90 Issue 4 July 1981 pp 417-426
A detailed study of the embryonic and larval development of the major carp hybrid, rohu-mrigal, has been made and compared with the parents. The development of the hybrid was normal and more or less similar to that of the parental species, with only a few minor differences. The hybrid larvae exhibited intermediate range between the parental species in morphological features, such as nature of lips, presence of barbels and the shape of the caudal spot.
Volume 95 Issue 1 February 1986 pp 103-107
In order to determine the optimum protein requirement in the feeds for
Volume 95 Issue 4 July 1986 pp 371-378
An experiment was conducted to study the effect of artificial aeration on the growth and survival of
Volume 98 Issue 2 March 1989 pp 85-88
Diethylstilbestrol, an estrogen, was administered through diet to fingerlings of common carp,