Abstract
Aim:To study the effect of Newcastle disease (ND) oral pellet vaccine in egg production and egg quality in desi chicken.Materials and Methods:The study was conducted at Veterinary University Training and Research Centre, Tiruchirapalli, Tamil Nadu. A total of 48-day-old desi chicks obtained from a private hatchery in Namakkal, Tamil Nadu, were maintained under cage system of rearing up to 52 weeks of age as per standard management practices. All the 48 chicks were divided into six groups having eight chicks in each group were subjected to different treatment regimes. All the birds were challenged at 52 weeks of age with 0.5 ml dose of 104.0 egg infectious dose 50 virulent ND field virus. 10 eggs from each group were randomly collected during the last 3 days of 8 weeks interval period from 28 to 52 weeks of age and were used to measure the egg quality parameters. The production performance of each group was assessed at 4 weeks interval period from 25 to 52 weeks of age.Results:In all the six treatment groups with respect to egg production, no significant difference (p≥0.05) was noticed from 25 to 52 weeks of age. Similarly, in egg weight, egg shape index and specific gravity, no significant difference (p≥0.05) was noticed from 28 to 52 weeks of age.Conclusion:From this study, it is concluded that the administration of ND oral pellet vaccine to desi chicken does not affect the egg production performance, egg weight, egg shape index, and specific gravity of egg.
Highlights
Newcastle disease (ND) is one of the major viral diseases of poultry causing great economic losses to the poultry industry [1]
From this study, it is concluded that the administration of ND oral pellet vaccine to desi chicken does not affect the egg production performance, egg weight, egg shape index, and specific gravity of egg
First group (T1) served as unvaccinated control, second group (T2) was primed with commercially available thermostabilized D58 vaccine followed by booster with Tamil Nadu Veterinary and Animal Sciences University (TANUVAS) oral pellet vaccine, third group (T3) was primed as well as boosted with TANUVAS oral pellet vaccine, fourth group (T4) was primed with RDV’F’ followed by booster with commercial vaccines (LaSota and R2B), fifth group (T5) was primed with commercially available thermostabilized D58 vaccine followed by booster with commercial vaccines (LaSota and R2B), sixth group (T6) was primed with TANUVAS oral pellet vaccine followed by booster with commercial vaccines (LaSota and R2B)
Summary
Newcastle disease (ND) is one of the major viral diseases of poultry causing great economic losses to the poultry industry [1]. ND remains a constant threat to the poultry industry and is a limiting disease for poultry producers worldwide [2]. The native chicken varieties adopted in free-range backyard conditions contribute about 11% of total egg production in India [3]. Village poultry plays a key and often undervalued role in a rural development in many poor rural households and is a global asset for many millions who live below the poverty line [4]. A vaccination of chickens has remained as the principal method to control this disease [5,6]. Control of ND primarily consists of vaccination of flocks and culling of infected or likely infected birds [7].
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