• K Vijayakumaran Nair

      Articles written in Proceedings – Animal Sciences

    • Metabolic disturbances caused byRaillietina tetragona (Cestoda) infection in domestic fowl: Effect of infection on certain aspects of protein metabolism

      K Vijayakumaran Nair A M Nadakal

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      The effects of two levels of infection with 20 and 50 cysticercoids ofRaillietina tetragona (Cestoda) on certain aspects of protein metabolism of White Leghorn chickens were studied for a period of 8 weeks post-infection. Infection had no effect on the total protein content of liver while that in intestinal tissues was slightly reduced. The free amino acid nitrogen in the blood was not altered during infection. The serum total proteins and the serum albuminglobulin ratio were reduced significantly in infected birds. The hypoproteinemia was mainly due to the hypoalbuminemia. The infected birds gained significantly less weight than the uninfected ones. The lowered serum proteins is correlated with the lowered weight gain. Pathological changes were more pronounced in birds infected with 50 cysticercoids and during the period from 4 to 6 weeks post-infection.

    • A comparative study on the mineral composition of the poultry cestodeRaillietina tetragona Molin, 1858 and certain tissues of its host

      A M Nadakal K Vijayakumaran Nair

      More Details Abstract Fulltext PDF

      The amounts of cations Ca, P, Na, K, Cu and Zn inRaillietina tetragona (Cestoda) and in liver, intestinal tissues and blood serum of its host (Gallus gallus dotmsticus) were determined using spectrophotometry, titrimetry, flame photometry and atomic absorption spectrophotometry. Quantitative variations were observed in the distribution of these minerals in the immature, mature and gravid regions of the worm, on dry weight basis. There was a gradual decrease in Ca content of worm along the antero-posterior axis. The Na content, on the other hand showed a reverse trend with the greatest amount in the gravid proglottids. The immature region contained the highest levels of P, K and Cu. The worms showed significantly higher levels of Ca, P, Cu and Zn than the liver and intestinal tissues on dry weight basis.R. tetragona, like host liver and intestinal tissues (but unlike blood serum), had quantitative excess of K over Na and other cations.


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