Affiliations: Indian Agricultural Statistics Research Institute, New Delhi, India
Corresponding author: A.K. Paul, Indian Agricultural Statistics Research Institute, New Delhi-12, India.
E-mail: [email protected]
Abstract: Logistic and Gompertz growth models are fitted in growth data for
Friesian × Sahiwal (F × S) and Friesian × Sahiwal × Haryana (F × S × H) breed at Agra station, Gompertz model gives
better fit than Logistic model. The Generalized Least Squares (GLS)
estimates are found to be more precise than Ordinary Least Squares (OLS)
estimates for both Logistic as well as Gompertz model under heteroscedastic
error condition for both breeds. Growth is found better for F × S × H breed, therefore, triple cross may have increased maturing rate
while asymptotic weight (mature weight) is found better for F × S
breed. Breed type significantly affects weight at maturity.