Seasonal Stress Affects Reproductive and Lactation Traits in Dairy Cattle with Various Levels of Exotic Blood and Parities under Subtropical Condition
Seasonal Stress Affects Reproductive and Lactation Traits in Dairy Cattle with Various Levels of Exotic Blood and Parities under Subtropical Condition
Ihsanullah*, Muhammad Subhan Qureshi, Sohail Akhtar and Syed Muhammad Suhail
Fig. 1.
Effect of year of calving on age at first calving (AFC, solid lines; y = 6.6048x + 415.47; R² =0.39 ) and calving interval (CI, dashed lines, y = 63.451x + 827.42; R² = 0.73) in dairy cattle.
Fig. 2.
Effect of parity on 305 days milk yield (solid squares; y = 1.9164x + 2547.5; R² = 0.01) and lactation length (solid circles; y = 3.5023x + 254.57; R² = 0.48) in dairy cattle.
Fig. 3.
Changes in 305 days milk yield with the increasing parities in crossbred dairy cows (y = -6.340x2 + 58.97x + 2452, R² = 0.49)
February 2020
Vol. 52, Iss. 1, Pages 1-424
