Optimum Body Weight and Productivity of Sheep from Blackhead Pleven Breed
Research Buffalo Institute with Biotechnology Centre, BG-9700 Shoumen, Bulgaria
GEORGIEVA, D., 2000. Optimum body weight and productivity of sheep from Blachhead Pleven Breed. Bulg. J. Agric. Sci., 6: 1-6
The traits biological fertility and milk productivity at complete and 200-day standard lactacion at 2.5 and 3.5 years of age of sheep from Black Head Pleven breed were the object of the investigation.
As a result of the investigation it was established that the sheep-mothers from the absolute and the relative productivity compared to the bigger and the smaller sheep. The selection in the future should be directed to this level on the trait.
Key words: complete lactacion, 200-day standard lactation, biological fertility