Effect of Phosphorus Supplementation on Progesterone Output in Gir and its Crossbred Cows Chakurkar E.B.*, Deopurkar V.L., Chinchkar S.R., Patil M.B. Department of Gynaecology and Obstetrics, Bombay Veterinary College, Mumbai-400 012, India. *Reprint request: Dr. E.B. Chakurkar, ICAR Research Complex for Goa, Ela, Old Goa-403 402, India, Fax: +91-832-286249; E-mail: ebc@icargoa.nic.in.
Abstract Inorganic phosphorus plays an important role in the fertility status of cows. Its level indicate the state of fertility of cows. Considering this in the present study a group of recipients was supplied with exogenous phosphorus to assess its effect on serum progesterone level in recipients of embryo transfer programs. Phosphorus preparation containing sodium salt of (4-dimethylamino 2-methyl phenyl phosphoric acid 0.2 g/ml) was given parentrally. Blood serum phosphorus was estimated before and after phosphorus supplementation. Progesterone level was analyzed in serum samples of control and phosphorus treated recipients on day of estrus, thereafter on 7th and 14th day post-estrus to know the effect of phosphorus supplementation on progesterone production. Serum level of phosphorus in treatment group was 7.81 ± 0.70 mg/dl and 6.01 ± 0.45 mg/dl in control at the time of prostaglandin treatment. These values in treatment and control group were 4.80 ± 0.34 and 6.58 ± 0.85 on day of estrus, respectively. Serum progesterone on day of estrus was 0.22 ± 0.45 ng/ml in treatment group and 0.59 ± 0.40 ng/ml in control group whereas on 7th day post-estrus these values were 1.16 ± 0.5 and 0.80 ± 0.50 mg/ml. These corresponding values on 14th day were 2.86 ± 1.57 and 2.35 ± 1.39 ng/ml respectively. This indicates that phosphorus supplementation had no beneficial effect in progesterone output. Top Key words Phosphorus, Supplementation, Progesterone, Gir, Cows. Top |