Oat. Peltoniemi et al., Seasonal, environmental and nutritional effects on gonadotrophins - Implications for establishment and maintenance of early pregnancy in the pig, REPROD DOM, 2000, pp. 96-100
Apart from driving the follicular development during the oestrous cycle, go
nadotrophins are also essential in the establishment and maintenance of ear
ly pregnancy in the pig. Therefore, any variation in gondotrophin secretion
particularly during the first month after mating may be significant, eithe
r effecting embryonic survival or even maintenance of early pregnancy. The
most obvious sources of variation in gonadotrophin secretion during the ear
ly pregnancy are changes caused by season, nutrition and environment. The p
resent paper reviews the impact of these factors on gondotrophin secretion
and the implications of this variation in gonadotrophin secretion during ea
rly pregnancy is discussed.