Success rate and recovery of milk production following induction of lactation in infertile dairy cows

The study was conducted to determine the success rate of induction of lactation in infertile dairy cows following induction of lactation protocol. The experiment was conducted on non-lactating parous cows having good body condition score (BCS) between 2–4 of 5 point scale. The selected cows were randomly divided into two groups each containing six animals (n= 6). Animals of group-1 (G-1) were treated with intramuscular injection of estradiol valerate depot @ 0.10 mg/kg along with injection of hydroxy progesterone depot @0.25 mg/kg OID for seven days. Intramuscular injection of dexamethasone @ 0.050 mg/kg was given and OID at 10^th, 11^th, 12^th and 13^th day followed by hand milking started onwards. In group-2 (G-2) intramuscular injection of estradiolvalerate depot @ 0.10 mg/kg along with consecutive injection of hydroxy progesterone depot @ 0.25 mg/kg OID for seven days was given. After that intramuscular injection of dexamethasone @ 0.050 mg/kg along with metoclopromide @ 0.10 mg/kg OID at 10^th, 11^th, 12^th and 13^th day was administered and hand milking started onwards. The milk production up to 20 days after the last injection was discarded in both the groups. The data generated were analysed statistically using t-test assuming equal variance in Microsoft Excel 2007.