Efficacy of pre-lay diets on pubertal growth spurt of commercial Leghorn pullets  under humid tropical climate

Sujatha T; R Asha Rajini; Gopu Gopu

doi:10.56093/ijans.v82i8.23041

Authors

Sujatha T Tamil Nadu University of Veterinary and Animal Sciences, Chennai, Tamil Nadu 600 007 India
R Asha Rajini Tamil Nadu University of Veterinary and Animal Sciences, Chennai, Tamil Nadu 600 007 India
Gopu Gopu Tamil Nadu University of Veterinary and Animal Sciences, Chennai, Tamil Nadu 600 007 India

https://doi.org/10.56093/ijans.v82i8.23041

Keywords:

Commercial pullets, Pre-lay dietary protein and energy, Pullet performance

Abstract

The present study was carried out to review Bureau of Indian Standards recommendations for layer pullet feed under a hot and humid tropical climate. Commercial layer chicks were fed from 0 to 14 weeks of age as per BIS. At 15 weeks, pullets were randomly assigned to each of 5 pre-lay diets namely, T1 (BIS control), T2–16/2700, T3–18/2700 (%CP / kcal ME/kg); T4–same as T2+lysine and methionine by 10% higher than BIS, and T5 – same as T4 with 2 % oil. Pullets fed on high energy and protein pre-lay diets of 2700 kcal and 18% CP gave significantly better body weight at sexual maturity, pubertal growth spurt during transition period (2 to 3 weeks before sexual maturity), with better feed efficiency. It was concluded that, pre-lay diet is needed to accelerate pubertal growth spurt during transition period and to achieve target body weight at sexual maturity.

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