NYMPHOMANIA WITH SEX REVERSAL IN A PEDIGREE
                           SAHIWAL HEIFER TREATED BACK TO
                                                  FERTILITY

                                                         BY

                                    N. P. FERNANDEZ, G.B.V.C.

Cattle Research Assistant, Imperial Agricultural Research Institute, New Delhi

                            (Received for publication on 15 April 1939)

                                            (With Plates I and II)

                                          INTRODUCTION

NYMPHOMANIA in cows and heifers is often associated in advanced cases
with the assumption of male characteristics, including very marked
physical changes and mental aberration. The affected females assume a
great degree of masculinity. The voice becomes deep, closely simulating that
of the male and there is a transformation of the feminine expressions of
face and head to masculine. The musculature, particularly of neck,
dewlap, hump and hind quarters bear striking resemblance to those of a
bull, and the rump is pitched high over the topline.

The changes in the temperament are particularly noticeable. The
affected females exhibit considerable excitement when in presence of females
in oestrus, select them out, mount them just like a bull in action, follow them
with head held low in the fashion of a bull and roar like a bull on the approach
of other animals and persons, and even make attempts to attack them.

The association of corpus luteum is a factor in maintaining the female
character of the individual. Destruction of corpus luteum tissue by cystic
invasion or its degeneration due to other causes is the aetiology of nympho-
mania.

Cattle of high class pedigree, excellence and high production are generally
the likely victims to this malady. The affected females become permanently
sterile (Plate I, Fig. 1).

                                             HISTORY

The case under report is the pedigree heifer No. 769 (Jeswant ×Chansuri).
She was born on the 18th of March, 1936, and is the second daughter of our
champion cow, Chansuri, who holds a heifer record yield of 7,846 lb. as well
as merit of performance of 10,119 lb. in her second lactation and 10,223 lb.
in the third lactation of 304 days. The heifer is also a daughter of a sire
whose dam's performance is over 8,000 lb. It would appear from the
pedigree and performances of her progenitors what a potential heifer she is
to the herd. When such pedigree heifers are affected with such incurable
form of sterility, it is, no doubt, a great loss to the breeder who endeavours
to improve his stock.

The heifer was brought up under early maturity treatment, and as a
result she came in heat for the first time at the age of one year, five months
and four days. She was at this time normally developed for breeding, but

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