
We give fish oils also, but about 12 weeks post whelping my bitch lost so much coat I was worried she would end up bald!! She even lost all her feathering & her tail looked like a rat's tail. We went on holiday to Pembrokeshire to recuperate (her too) and had a lovely time, even though I'm sure some couldn't guess her breed! Mind you, the weight she lost at around week 5 was fine by then, she just didn't have any coat!
Am not sure if there's anything to be done about this as it's hormonal but not sure in this case if it would be that.