Executive Summary & Operational Context
The bull is half the herd. Over 80% of genetic progress in a dairy farm is determined by sire selection. Systematic pedigree recording and choosing progeny-tested sires with high breeding values increases herd lactation average by 20% within three generations.
Selecting semen from bulls whose dams produced over 4,000 liters guarantees that daughter heifers will significantly outperform current herd mothers.
Why Street Stud Bulls Degrade Herd Productivity
Using uncertified village stud bulls of unknown parentage results in severe negative selection: scrub bulls pass down low milk yield genes, slow growth, poor udder attachments, and carrier genes for genetic diseases. In contrast, artificial insemination semen stations test and index thousands of daughters (Progeny Testing) to prove that a bull reliably transmits high milk yield, high butterfat, sound feet and legs, and mastitis resistance.
How to Implement on Your Dairy Farm
Maintain Ear Tag ID & Record Books
Tag every calf at birth with INAPH 12-digit ear tags and record dam ID, sire straw number, birth weight, and calving date.
Rotate Sire Bloodlines Every Generation
Never use the same bull line on his own female offspring. Always introduce unrelated pedigreed semen.
Weed Out Bottom 15% Genetic Performers
Cull chronologically low-yielding, mastitis-prone cows and replace them with high-index home-reared heifers.
Recommended Breeds for this System
Related Dairy Guides in Breeding & Genetics
Sex-Sorted Semen in Dairy Farming: 90% Female Calf Rate, Cost & AI Technique
Heat Detection in Cows and Buffaloes: Standing Heat Symptoms & The AM-PM AI Rule
Repeat Breeding in Dairy Cattle: Causes, Hormonal Protocols & Uterine Infection Cure
FAQ
Frequently Asked Questions: Dairy Sire Selection & Pedigree Recording: Improving Herd Yield by 20% in 3 Generations
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