兔遗传育种基础：选种选配与杂交优势利用

Superior breeds are the foundation of rabbit production; genetic improvement is the most enduring means of enhancing farming profitability. Although most commercial farms do not conduct systematic breeding, mastering basic selection and mating knowledge is crucial for maintaining herd production levels.

Individual selection methods: bucks prioritized for growth rate and body conformation, requiring straight back and loin with full hindquarters. Does prioritized for reproductive performance and maternal ability, with no fewer than 8 well-arranged teats. All breeding rabbits must be healthy without genetic defects. Record core production trait data as selection basis.

Family selection is more reliable than individual selection. Evaluate breeding value by comparing average production performance of offspring from different families. Establish complete pedigree archives recording parent and sibling reproduction and growth data. Annually cull the bottom 20% of families based on progeny test results.

Heterosis utilization: two-way crossbreeding (breed A buck x breed B doe) yields 5-10% improvement in growth rate and reproductive performance. Three-way crossbreeding stacks maternal and individual heterosis. Recommended: Californian buck x (New Zealand White buck x Hyla doe) three-way cross combination.

Breeding record management: establish breeding rabbit record cards recording ear numbers, birth dates, pedigrees, mating and kindling records, and growth measurement data. Use breeding management software for data analysis and breeding value estimation. Develop annual mating plans to avoid inbreeding depression.