In the 1950s American economist Marver H. Bernstein described the rhythm of regulation as a life cycle of regulatory commissions, with phases of gestation, youth, maturity, and old age.
This result suggests that PFOS damages the organs that develop in the last phases of gestation.
Exposure to PFOS in the late phases of gestation is apparently adequate to induce effects that are toxic to reproduction.
In a study in which PFOA was exclusively applied in the late phase of gestation, it was also shown that this treatment was adequate to trigger developmental toxic effects in mice ([169] cited in BfR [17]).
On the contrary, we observed a high rate of GD, in most cases, in an early phase of gestation.
Previous studies in pigs have shown that prenatal stress during the late phase of gestation also decreased the circulating IgG levels in neonates [ 8, 39].
During the first two trimesters of pregnancy, adipose fat storage, as maternal fuels, occurs in preparation for an active transfer of maternal glucose, amino acids, and free fatty acids (FFA) across the placenta for accelerate fetal growth in late phase of gestation [ 18].
The HSUS has encouraged USDA to tie any buy-ups to a commitment from the industry to an industry-wide phase out of gestation crates and the routine dosing of pigs with antibiotics for non-therapeutic reasons, but that request has been met with silence.
This marks a transition from the "development phase" during organogenesis to the "mature phase" of late gestation (35).
During the pseudoglandular phase (6 16 weeks of gestation in humans), branching continues and mesenchyme differentiates into cartilage, smooth muscle, and connective tissue around the epithelial tubules.
The requirement in the California law and the Ohio agreement to phase out the use of "gestation crates" on hog farms will have much wider effects.
