Advances in Animal and Veterinary Sciences

Research Article
Adv. Anim. Vet. Sci. 9(6): 862-868
 
Figure 1

The concentration of FSH of crossbred cows offered different treatments. 

Figure 2

The concentration of the luteinizing hormone in the crossbred cows receiving different treatments. 

Figure 3

Ultrasound observation of the reproductive tract of crossbred cows in the control group (A).
 

Figure 4

Ultrasound observation of the reproductive tract of crossbred cows in the premix group (B).  

Figure 5

Ultrasound observation of the reproductive tract of crossbred cows received two boluses (C). 

Figure 6

Ultrasound observation of the reproductive tract of crossbred cows received four boluses (D).