Questions And Answers
what are the net nutrient requirements for conceptus growth
energy, protein, mineral deposition in the fetus, supporting tissues in the gravid uterus
what are the supporting tissues in the gravid uterus
placenta, fetal membranes, fluids, new uterine tissue
during what period in pregnancy are requirements small?
early to mid pregnancy
when do requirements begin to accelerate in pregnancy?
late pregnancy
when do fetal calves double in weight?
during the last 6-8 weeks of a 40 week gestation pregnancy
net energy is split into what types of energy?
maintenance energy and retained energy
what does retained energy go toward?
,growth, lactation, and pregnancy
what are monotremes?
mammals that lay eggs
example of a monotreme
platypus
what determines the metabolic/nutritional impact of pregnancy on the dam?
fetal weight to maternal weight ratio, and gestation length
what is the gestation period for cows
283d
what is the gestation period for sheep
147d
what is the gestation period for horses
11m
what is the gestation period for pigs
3m 3w 3d
, effects of over/underfeeding dam during early pregnancy
increased embryo death
when do females readily synthesize and deposit fat during pregnancy?
early-mid pregnancy
what can overfatness lead to in late pregnancy?
toxemia (beef cattle, sheep), birth difficulty, postpartum metabolic disease(cattle)
what are the feeding recommendations for livestock when pregnant
feed at or a little above maintenance for about a month after breeding
toxemia of pregnancy
pregnancy complication involving hypertension, urine protein, and damaged organs
can weight loss during mid-pregnancy jeopardize fetal growth? why or why not?
no, as long as dams are well-fed during late pregnancy. this is because most fetal
growth happens during late pregnancy
what is the efficiency of utilization of maternal dietary energy for conceptus
growth?
Low