Question: is this a 2) strong advice, 1) weak advice 0) no advice?

Alternatively, both LMC and STR pups might experience an early “enrichment” effect; daily “handling” of the pups may induce altered maternal behavior toward all pups which is regarded as an early enrichment effect (Kaffman & Meaney 2007; Ladd et al 2005, Meerlo et al 1999, Suchecki Rosenfeld & Levine 1993, Zaharia et al 1996) which may in turn increases cortical size in all pups (STR and LMC) in the split litter. 
user
This is no advice
assistant