Janumu not good for pregnant cow? need validation

A local farmer was recommending not to go for Janumu as Cow feed especially when it is pregnant as Janumu can abort the pregnancy.

Can any of you validate this,

I am having hard time finding good cow green feed seeds, would appriciate if someone can direct me to the source of the green grass seeds for cow.

Checked with AO, was directed to Vet docs, and Vet says there are non available in the entire district (Medak)

FYI -
Janumu is Sunnhemp (Crotalaria juncea)
Jeeluga is Dhaincha (Sesbania aculeata)

Its available nearby Chennai from Govt Dept.  I recently bought few kgs of seeds like COFs-29, Guinea Grass, Velimasal etc.

You can check this site sureshforestrynetwork.com/afodde … tml.  I have bought few seeds from them but not these.

Regards
Padmanabhan Ganesan
agricultureforeverybody.blogspot.com