Effects of Genetic and Environmental Factors on Mastitis and Performance Traits in Various Breeds of Dairy Cattle Maintained at Khyber Pakhtunkhwa, Pakistan

Milk quantity and quality traits in cattle are affected by udder health, breed, genetic (such as heritability, repeatability, and heterosis), and environmental factors. The present study was designed to evaluate the effect of udder health, genetic factors and environmental factors on milk performanc...

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Bibliographic Details
Published in:Pakistan journal of zoology 2024-08, Vol.56 (4), p.1909
Main Authors: Javed, R, Usman, T, Niaz, S, Ali, N, Baneh, H, Ullah, K, Khattak, I, Kamal, M, Bahadar, S, Khan, N.U, Y. Wang, Y. Yu, Nassar, Mostafa K
Format: Article
Language:English
Subjects:
Age determination
Agricultural production
Animal breeding
Animal fat
Animal husbandry
Animal lactation
Animals
Cattle
Comparative analysis
Composition effects
Cow's milk
Dairy cattle
Dairy farming
Dairy farms
Dairy industry
Diagnosis
Distribution
Environmental aspects
Environmental effects
Environmental factors
Estimates
Generalized linear models
Genetic analysis
Genetic aspects
Genetic diversity
Genetic factors
Genetic variance
Health aspects
Heritability
Heterosis
Lactose
Livestock
Mastitis
Milk
Milk production
Performance evaluation
Phenotypic variations
Physiological aspects
Protein composition
Proteins
R&D
Reproducibility
Research & development
Statistical models
Udder
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Summary:Milk quantity and quality traits in cattle are affected by udder health, breed, genetic (such as heritability, repeatability, and heterosis), and environmental factors. The present study was designed to evaluate the effect of udder health, genetic factors and environmental factors on milk performance traits in cattle breeds. The study was conducted on four dairy farms in Khyber Pakhtunkhwa, Pakistan. A total of 291 milk samples and 547 records were collected from lactating cattle ranging between parities one to six. For milk performance traits and udder health, each milk sample was analysed for milk composition (fat %, protein %, and lactose %) and SSC (by direct microscopic SCC method). The data were analysed using a generalized linear model of SAS studio for the effect of the SCC, breed, and herd on milk performance while wombat and CFC for the analysis of genetic and non-genetic factors. The results showed that animals with higher SCC have significantly lower (P
ISSN:0030-9923
DOI:10.17582/journal.pjz/20211207121211