ANALYSIS OF THE LACTATION CURVE MODELS FOR PREDICTING FL305DMY IN JAFARABADI BUFFALOES

Digvijay Mane; Hardik Ashokbhai Sharma; Prakash Uttamrao Gajbjiye; Anshu Rampal Ahlawat; Arun Laljibhai Ramani; Gajendra Bhawarsingh Solanki

doi:10.56825/bufbu.2025.4445841

Authors

Digvijay Mane Department of Animal Genetics and Breeding, College of Veterinary Science and Animal Husbandry, Kamdhenu University, Anand, India
Hardik Ashokbhai Sharma College of Veterinary Science and Animal Husbandry Kamdhenu University, Junagadh, India
Prakash Uttamrao Gajbjiye Cattle Breeding Farm, Kamdhenu University, Junagadh, India
Anshu Rampal Ahlawat Department of Animal Genetics and Breeding, College of Veterinary Science and Animal Husbandry, Kamdhenu University, Anand, India
Arun Laljibhai Ramani Veterinary Dispensary, Rajkot, India
Gajendra Bhawarsingh Solanki Department of Animal Reproduction, Gynaecology and Obstetrics, College of Veterinary Science and Animal Husbandry, Kamdhenu University, Himatnagar, India

DOI:

https://doi.org/10.56825/bufbu.2025.4445841

Keywords:

Bubalus bubalis, buffaloes, Jafarabadi, parabolic exponential function (PEF) , inverse polynomial function (IPF), gamma type function (GF), Mixed log function (MLF)

Abstract

The present investigation was conducted on first lactation production traits of 213 Jafarabadi buffaloes spread over a period of 24 years (1991 to 2014), maintained at Cattle Breeding Farm, Kamdhenu University, Junagadh. The objectives of the study were to find the best fit of lactation curve model which can describe the first lactation curve in Jafarabadi buffalo and to examine the curve pattern of first lactation yield using MTDYs in Jafarabadi buffalo. Four different lactation curve models viz. Parabolic Exponential Function (PEF), Inverse Polynomial Function (IPF), Gamma Type Function (GF) and mixed Log Function (MLF) were used for predicting FL305DMY using MTDMY. The coefficient of determination (R2 -value) for PEF, IPF, GF and MLF were 83.28%, 98.84%, 96.80%, and 92.73%, respectively. The average root mean square error (RMSE) was found to be minimum for GF (0.073 litre) followed by PEF (0.149 litre), MLF (0.102 litre) and IPF (0.376 litre). Graphical presentation indicated that GF was found to be best fit for MTDYs in Jafarabadi buffalo, while PEF was least fitted. The trend of GF indicated that this function was most suitable to Jafarabadi buffaloes.

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Author Biography

Arun Laljibhai Ramani, Veterinary Dispensary, Rajkot, India

Arun Laljibhai Ramani

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