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Two series of experiments were carried out with 2340 gilts on commercial farms. Oestrus was synchronised by feeding 5 g Turisynchron (methallibure) daily for 20 days beginning at about 250 days of age and then injecting 1000 IU PMS followed later by 250 or 500 IU HCG. The effect on fertility of HCG ...

Reuther, E.; Fritzsch, M.; Bergfeld, J.; Sieland, W.
Monatshefte fur Veterinarmedizin, 1975, 30, 6, pp 217-223