Genetic analysis of first lactation and lifetime performance traits in composite Vrindavani cattle: important considerations for higher milk production

The present study was aimed to evaluate the influence of non-genetic factors on several first lactation and lifetime performance traits and elucidate their genetic parameters in an organized Vrindavani cattle population. Data on eight first-lactation and thirteen lifetime traits were collected on 24...

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Bibliographic Details
Published in:Tropical animal health and production 2024-01, Vol.56 (1), p.31-31, Article 31
Main Authors: Tamilarasan, K., Ahmad, Sheikh Firdous, Panda, Snehasmita, Preethi, A. Latha, Tarafdar, Ayon, Pandey, Hari Om, Gaur, Gyanendra Kumar
Format: Article
Language:English
Subjects:
Animal lactation
Animal populations
Animals
Biomedical and Life Sciences
Breeding of animals
Cattle
Cattle - genetics
Female
Genetic analysis
Genetic factors
Genetic testing
Genotype & phenotype
Heritability
Lactation
Lactation - genetics
Life Sciences
Milk
Milk production
Phenotype
Regular Articles
Veterinary Medicine/Veterinary Science
Zoology
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Summary:The present study was aimed to evaluate the influence of non-genetic factors on several first lactation and lifetime performance traits and elucidate their genetic parameters in an organized Vrindavani cattle population. Data on eight first-lactation and thirteen lifetime traits were collected on 2400 cows with pedigree records that were reared during 33-year period (1989–2021). The first-lactation traits included age at first calving (AFC), total milk yield (FTMY), standard milk yield (FSMY305), peak yield (FPY), lactation length (FLL), dry period (FDP), service period (FSP) and calving interval (FCI). Whereas, the lifetime traits mainly included total lifetime milk yield (TLMY), total standard milk yield (TSMY), number of lactations completed (NL), total lactation length (TLL), herd life (HL), productive life (PL), average milk yield per day of herd life (TLMY/HL), average milk yield per day of productive life (TLMY/PL), average milk yield per day of productive life (TLMY/TLL). Other lifetime production traits included average service period (ASP), average dry period (ADP), average calving interval (ACI) and unproductive days (UD). The heritability estimates of first-lactation traits ranged between 0.026 and 0.228 and were found to be low for AFC (0.180 ± 0.042), FCI (0.191 ± 0.125), FSMY305 (0.145 ± 0.061), FTMY (0.165 ± 0.048), FDP (0.052 ± 0.049) and FSP (0.026 ± 0.033); however, FLL (0.229 ± 0.044) and FPY (0.202 ± 0.046) showed moderate heritability. Positive phenotypic correlation ( p  
ISSN:0049-4747
1573-7438
DOI:10.1007/s11250-023-03871-2