The official journal of The Sri Lanka Veterinary Association
Sri Lanka Veterinary Journal (volume: 53 (2))
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Volume - 53 (2)
Year - 2006
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Section - A
Review Article
H. Kothalawala1,2,  K.A.C.H.A. Kothalawala3  and  E. Gruys2
1. Veterinary Research Institute, Peradeniya
2. Department of Pathobiology, Faculty of Veterinary Medicine, University of Utrecht, The Netherlands
3. Division of Livestock Planning & Economics, Department of Animal Production & Health, Peradeniya

AN OVERVIEW OF PORCINE REPRODUCTIVE AND RESPIRATORY SYNDROME 

H. Kothalawala1,3 B.V.Sc., K.A.C.H.A. Kothalawala2 B.V.Sc., M.V.Sc. and E. Gruys3 D.V.M., PhD 

1.Veterinary Research Institute, Peradeniya

2.Division of Livestock Planning & Economics, Department of Animal Production & Health, Peradeniya

3.Department of Pathobiology, Faculty of Veterinary Medicine,University of Utrecht, The Netherlands

Porcine reproductive and respiratory syndrome (PRRS) is one of the most economically devastating diseases affecting swine industry worldwide. PRRS virus (PRRSV) is a member of Arteriviredae that, like other members of the family, has the ability to infect macrophages and to persist in tissues for at least several months after an acute stage of infection subsides. The consequences of complex epidemiologic profile of the agent creates extreme difficulty in disease control under the usual conditions.  The objective of this review is to summarize the current knowledge in PRRS virus (PRRSV) infection in pigs with emphasis on causative agent, pathogenesis, diseases manifestation, diagnostic techniques and control.

S.L.Vet.J.2006, 53 (2A): 1-6

Original Article
K.A.C.H.A. Kothalawala1,2,  Sanjay Kumar1,  M.K. Sinha1  and  H. Kothalawala3
1. Division of livestock Economics and Statistics, Indian Veterinary Research Institute Izatnagar, 243-122(UP), India
2. Division of Livestock Planning & Economics, Department of Animal Production & Health, Peradeniya
3. Veterinary Research Institute, Gannoruwa, Peradeniya

RESOURCE USE EFFICIENCY OF SMALL SCALE DAIRYING IN BAREILLY DISTRICT OF UTTAR PRADESH IN INDIA

 K.A.C.H.A. Kothalawala1,2 B.V.Sc., M.Sc., M.V.Sc, Sanjay Kumar1 B.V.Sc., M.Sc., Ph.D, M.K. Sinha1 B.V.Sc., M.Sc., Ph.D and H. Kothalawala3 B.V.Sc., M.V.Sc

  

1. Division of livestock Economics and Statistics, Indian Veterinary Research Institute, Izatnagar, 243-122(UP),India

2. Division of Livestock Planning and Economics, Department of Animal Production and Health, P.O. Box 13, Gatambe, Peradeniya, Sri Lanka

3. Veterinary Research Institute, Gannoruwa, Peradeniya

A majority of Indian dairies are characterized by indigenous, crossbred cows and buffaloes profusely fed on crop residues which are available at the agricultural farm yard.  Low productivity is the major weakness in Indian dairying, which has to be enhanced optimally.  Efficiency of utilization of resources determines the productivity and profitability of the farm.  Therefore, with an objective of studying the recourse use efficiency in Bareillydistrict Uttar Pradesh, India, a study was planned and carried out.  Multistage stratified random sampling was used to select the blocks, gram panchayat and ultimate farm respondents.  The data were collected using pre-structured questioner during the period of February to April, 2006.  The data collected were further categorized in to three groups namely, landless, marginal, medium and large farmers based on land holding.  Linear and Cobb Douglas production function were tried for analysis and the latter was found to be the fit.  The goodness of fit (R2) was examined with respect to their economic interpretation, the level of significance of regression coefficients and adjusted coefficient of multiple determinations.  Resource use efficiency was determined on the basis of marginal value product (MVP) of the respective input factors.  Input factors namely human labor, green fodder, dry fodder and concentrates explained 77% of milk production in the study area.  The difference between MVP and their factor cost of labor were negative and statistically significant in groups 2 and 3.  This indicates that the labor was over utilized in these two groups and it’s use at present is significantly higher than the optimal level.  To increase the profitability of the dairy enterprise the dairy farmers should be encouraged to feed dairy animals more particularly with the green fodder, dry fodder and concentrate.  The labour which is overused in the dairy enterprise can be shifted to other enterprises to enhance overall family income. 

S.L.Vet.J.2006, 53 (2A): 7-10

Section - B
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