The official journal of The Sri Lanka Veterinary Association
Sri Lanka Veterinary Journal (volume: 65(1))
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Volume - 65(1)
Year - 2018
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Original Article
A.P.Liyanage1,  M.R.C.K. Mallawa2  and  I.D. Silva2
1. Department of Animal Production and Health, Sri Lanka
2. Veterinary Teaching Hospital, University of Peradeniya, Sri Lanka

SUMMARY: This study investigates the in vitro phagocytic activity of blood neutrophils of dogs in Sri Lanka for Escherichia coli. The study sample comprised of 70% mongrel and 30% cross bred dogs of both sexes. The leukocyte isolation method described yielded up to 12,930/ìl viable leukocytes of which 61-90% was neutrophils, with viability ranging from 90-99% (mean 96%). The mean percent phagocytosis (MPP) of canine blood neutrophils was significantly higher at 30 minutes incubation (89%) than at 15 minutes incubation (70 %) with E.coli. The findings support the fact that innate immunity can be measured qualitatively and quantitatively by the technique described which will be useful for the identification of immunocompromised dogs.

M.N.M. Fouzi1  and  M.L.A.N.R. Deepani1
1. Department of Farm Animal Production and Health, Faculty of Veterinary Medicine and Animal Science, University of Peradeniya, Sri Lanka

SUMMARY: Water hyacinth (Eichhornia crassipes) is a fast growing invasive aquatic plant often covers water bodies. It has been a problem worldwide. Fast-growing and rapidly expanding omnivorous tilapia is likely the suitable species for aquaculture. Since the fish farmers are adversely affected by high cost feed, the use of water hyacinth as a protein source in fish feed could offer solutions to both the problems. The present study therefore was carried out to perceive the use of water hyacinth as a cheap protein source in the diet of tilapia (Oreochromis niloticus). Four types of fish feeds were formulated replacing the fish meal and soybean meal by water hyacinth at 0% (control, feed 1), 5 % (feed 2), 15 % (feed 3) and 20% (feed 4). Two weeks old tilapia fry of 0.8g ± 0.3g mean body weight were stocked in 12 tanks in four treatments, each with three replicates and fed with respective feed at the rate of 4% of body weight for 63 days (Each tank was stocked with fifteen tilapia fries). Body weight and body length of each fish were measured every fortnight while the initial measurement was taken after one week of acclimatization period. Feed cost for one kg of each feed samples was also calculated. The results revealed that the feed conversion ratio (1.54±0.18, 1.46±0.25, 1.45±0.16 and 1.46±0.42) and growth rates (0.11, 0.106, 0.106 and 0.124 g/day) among fish groups fed with feed 1, 2, 3 and 4 respectively were not significantly different (P>0.05).Costs per kg of feed decreased with the increasing of replacement of fish meal by water hyacinth i.e. Rs. 120, 110, 93, and 84 respectively. There were no significant differences in feed utilization among four types of feed by the replacement of protein source with water hyacinth. Thus, water hyacinth leaves could be used to replace 20% of the high cost protein source in the diet of tilapia.

Clinical Communication
PS Jayatilaka1,  PPH Pinnagoda1,  PE Gunawardena1,  KMH Ginarathne1,  I.D. Silva2,  N Wijeyawardena3,  M.R.C.K. Mallawa2,  TMW Karunaratne4,  A Dangolla3  and  R.S.Kalupahana5
1. Sri Lanka Air Force, Katunayake
2. Veterinary Teaching Hospital, University of Peradeniya, Sri Lanka
3. Veterinary Teaching Hospital, University of Peradeniya
4. Government Veterinary Surgeon, Anuradhapura
5. Department of Veterinary Public Health and Pharmacology, Faculty of Veterinary Medicine and Animal Science, University of Peradeniya, Peradeniya

SUMMARY: The complicated clinical manifestations of canine piroplasmosis with severe thrombocytopenia have been occasionally observed in dogs. This clinical communication describes an acute clinical condition characterized by severe bleeding tendencies with high fatality rates in five groups of working dogs of the Sri Lanka Air Force. It is a multifactorial condition in which known hemoparasites in dogs in Sri Lanka and Anaplasma possibly play roles, requiring further investigation. The clinical condition was successfully managed with a combination of oral antibiotics and prednisolone.