The neonatal foal is born with minimal energy stores as compared with the adult horse. The body composition of the newborn foal differs significantly from that of the adult horse, and these differences contribute to the foal's inability to survive periods of nutritional deprivation. The total body water of newborn full-term foals is approximately 79% of body weight as compared with that of adult horses (60%) [1]. Premature mature foals have an even greater percentage of body weight in the form of water (83%) [1]. These differences are attributable to less body fat and greater blood volume in the neonatal foal as compared with the adult. The blood volume of the newborn foal has been reported to be 93 to 150 mL/kg [2]. Over the first 30 days of life,increase in body weight exceeds increase in blood volume, such that by 100 days, the proportion of body weight to blood volume approaches that of the adult [2].
展开▼
机译：与成年马相比，新生马驹的能量存储量很小。新生小马驹的身体成分与成年马的身体成分显着不同，这些差异导致小马驹无法在营养剥夺时期生存。与成年马（60％）相比，新生儿足月驹的总体内水分约为其体重的79％[1]。早熟的小马驹以水的形式（83％）具有更高的体重百分比[1]。与成年人相比，这些差异是由于新生儿马驹的体内脂肪减少和血容量增加。据报道，新生小马驹的血容量为93至150 mL / kg [2]。在生命的前30天，体重增加超过了血容量的增加，因此到100天时，体重与血容量的比例已接近成年人的比例[2]。
展开▼
