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Prediction of First Lactation 305-day Milk Yield Based on Bimonthly Test Day Milk Yield Records in Murrah Buffaloes

DOI: 10.18805/ijar.B-3963    | Article Id: B-3963 | Page : 486-490
Citation :- Prediction of First Lactation 305-day Milk Yield Based on Bimonthly Test Day Milk Yield Records in Murrah Buffaloes.Indian Journal of Animal Research.2021.(55):486-490
Ekta Rana, Ashok Kumar Gupta, Avtar Singh, Anand Prakash Ruhil, Ravinder Malhotra, Saleem Yousuf, Gedam Ete drektarana16@gmail.com
Address : Animal Genetics and Breeding Division, ICAR-National Dairy Research Institute, Karnal-132001, Haryana, India. 
Submitted Date : 9-12-2019
Accepted Date : 3-03-2020

Abstract

The present study was conducted on 2100 first lactation bimonthly test day milk yield (BTDY) records of 350 Murrah buffaloes calved in between 1993 and 2017 at ICAR-NDRI, Karnal. A total of 6 BTDY records were taken from each animal at an interval of 60 days, from 6th day to 305th day of lactation. The prediction of First Lactation 305-Day Milk Yield (FL305DMY) was done by utilizing five conventional and machine learning methods viz., Centering Date Method (CDM), Test Interval Method (TIM), Ratio Method (RM), Multiple Linear Regression (MLR) and Artificial Neural Network (ANN). Error in prediction was estimated by absolute error, percentage absolute error, average error, percentage average error, Root Mean Square Error (RMSE) and percentage RMSE. MLR was found to be the best method with the least error in prediction (5.71% RMSE), followed by ANN (5.77% RMSE). The accuracy (R2) of MLR equation including all 6 BTDY records was 91.86%. The best MLR equation for an early prediction of FL305DMY included 3 BTDY records viz., BTDY-2 (65th day), BTDY-3 (125th day) and BTDY-4 (185th day) with 85.29% R2. The study compared the conventional and computational methods for prediction of first lactation milk yield which could be used for early selection of the animals.

Keywords

Bimonthly test day milk yield Machine Learning Murrah buffaloes Prediction

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