Performance and Antibody-Mediated Response to Post-Hatch Feed and Water Deprivation of Chicken Broilers
Performance and Antibody-Mediated Response to Post-Hatch Feed and Water Deprivation of Chicken Broilers
Soshe Ahmed1*, Mst. Ishrat Zerin Moni1, Maksuda Begum2, Md. Jafar Eqbal3, Md. Shahidul Islam4, Mst. Samira Tanjim1, Mst. Rokeya Sultana1
ABSTRACT
The study assessed the effect of post-hatch feed and water deprivation of broilers reared in a hot-humid environment. A total of three hundred forty-five one-day-old Ross-308 broiler chicks were randomly allotted into five treatment groups as T1, T2, T3, T4 & T5 (6 hrs, 12 hrs, 24 hrs, 48 hrs, and 60 hrs of post-hatch feed and water deprivation). Birds were allowed a two-phase feeding system, such as starter and finisher, where appropriate. Performance parameters include feed intake (g/birds), body weight gain, average daily gain, feed conversion ratio, and viability% for growth periods (1 d to 7 d, 1 d to 14 d, 1 d to 21 d, 1 d to 28 d) were calculated. All chicks were vaccinated with live attenuated Newcastle Disease Virus LaSota strain on day 2 via eye drop vaccination, along with other basic immunization schemes. After 14 days of ND vaccination, post-vaccination sera samples were collected and subjected to an HI test to determine antibody titers. The Haemagglutination inhibition test was done using Newcastle Disease Virus LaSota strain NLT 106.0 EID50 antigen. Post-hatch feed and water deprivation durations significantly affect the production parameters. Feed intake, body weight gain and average daily gain were significantly (p<0.01) lower in the T5 group. Significantly (p<0.01), a poor feed conversion ratio was observed in the T5 group. The lowest (91.66%) survivability (p<0.01) was found in the T5 group compared to other groups. There was a significant (p<0.01) difference in European Broiler Index for growth periods. Post-hatch feed and water deprivations did not influence (p>0.05) the antibody titer level against the Newcastle disease virus. Increasing post-hatch feed and water deprivation leads to lower feed intake, body weight gains, poor feed conversions, and lesser livability of broilers. Therefore, early access to feed and water after hatching is recommended to achieve better production performance of broilers.
Keywords | Feed and water deprivation; Broiler, Production, Performance; Immune response
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