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This book offers a clear, practice-oriented pathway through modern animal breedingbridging classical quantitative genetics with contemporary genomic tools. Beginning with the history of animal breeding and the characterization of India major livestock and poultry breeds, it builds core fluency in economic traits, karyotyping, data correction/standardization, and variance components. Readers learn how to estimate heritability and repeatability, interpret genetic and phenotypic correlations, and design effective selection programsfrom individual and family selection to pedigree, sib, and progeny testingculminating in robust sire evaluation.

Advanced chapters introduce marker-assisted selection, gene introgression, genomic selection, and GWAS, showing how DNA-based insights accelerate accuracy and genetic gain. Mating systems are treated comprehensively: inbreeding (with coefficients, consequences, and controlled uses), outbreeding and its forms, heterosis, and selection for combining ability. The text then scales to nucleus breeding systems (open/closed), integrated breeding strategies for livestock and poultry, and targeted improvement for disease resistance and fitness traits. Practical sections on breed characterization/registration, development of new strains, national/state policies and programs, conservation methods, and the emerging landscape of sexed semen round out an India-centric, ICAR-aligned resource for UG/PG students, breeders, and extension professionals.

Key Features (at a glance)

• Worked examples and formulas for estimates
• Field-ready selection and mating templates
• Genomics and GWAS simplified for practitioners
• India breeds, policies, and conservation programs highlighted

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