Estimation of factors influencing the monthly test day milk yields in Mehsana buffaloes under field condition
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Authors
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Tanvir M Bhatt
Kamdhenu University, Sardarkrushinagar
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Jay Prakash Gupta
Kamdhenu University, Sardarkrushinagar
http://orcid.org/0000-0003-2012-3633
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Jagdish D Chaudhari
Kamdhenu University, Sardarkrushinagar
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Pravin Babubhai Purohit
NDRI Karnal
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Haresh D Chauhan
SDAU Sardarkrushinagar
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Amit Kumar Srivastava
Kamdhenu University, Sardarkrushinagar
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Bharat S Rathod
SDAU Sardarkrushinagar
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Pravin A Patel
DURDA Mahesana
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Mukesh N Prajapati
DURDA Mahesana
Keywords:
Buffaloes, Mehsana buffaloes, Non-genetic factors, Genetic factors, Monthly test day milk yieldAbstract
test day milk yield records of 7113 Mehsana buffaloes sired by 173 bulls spread over a period of 20 years from 1993 to 2012, collected from the Dudhsagar Research and Development Association (DURDA), Dudhsagar Dairy, Mehsana. The data were classified according to season, period and age of calving groups to study the effect of genetic and non-genetic factors. The overall least squares means of different monthly test day milk yields (MTDMY)Â obtained as 6.32±0.32, 7.84±0.31, 7.92±0.31, 7.57±0.317, 08±0.30, 6.54±0.30, 5.98±0.30, 5.33±0.30, 4.64±0.30, 3.99±0.31, 3.42±0.33 liters for MTDMY1 to MTDMY11, respectively. There were significant effects of all the non genetic factors taken in the study on almost all the monthly test day milk yields in Mehsana buffaloes. The heritability estimates for monthly test day milk yields viz. MTDMY1 to MTDMY11were 0.08 ± 0.02, 0.12 ± 0.02, 0.27 ± 0.04, 0.18 ± 0.03, 0.16 ± 0.03, 0.44 ± 0.05, 0.22 ± 0.03, 0.25 ± 0.03, 0.30 ± 0.04, 0.28 ± 0.04, 0.18 ± 0.04, respectively. The low to moderate heritability estimate of MTDMYs indicates that these traits were influenced more by environmental factors than by genetic factors and could be improved by efficient management, proper care and feeding during pregnancy and lactation.Â
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