Le Dividich J, Herpin P, Paul E, Strullu F
INRA, Station de Recherches Porcines, St Gilles, France.
J Anim Sci. 1997 Mar;75(3):707-13. doi: 10.2527/1997.753707x.
The effects of colostral fat level on voluntary colostrum and ME intake were determined in 25 newborn pigs during the first postnatal day. Within a litter, five pigs were obtained before nursing and allotted on the basis of initial body weight (BW) at 2 h of age to one of the five treatments: killed or ad libitum bottle-fed sow colostrum containing 2.5, 5.0, 7.5, or 10.0% of total fat. A total of 24 feedings was provided at 60-min intervals, and pigs were killed 1 h after the final feeding. Total colostrum intake averaged 584.8 +/- 42 g (i.e., 436 g/kg of average BW) with the first two feedings accounting for 19.8% of the total consumption. Colostrum intake decreased linearly (P < .08) by 5.9 g/kg of average BW per 1% increase in the level of fat. However, GE and ME intake increased linearly (P < .01) by 7.65 and 4.09 kcal/kg average BW per 1.0 g/kg of average BW increase in fat intake, respectively. Adipose tissue lipoprotein lipase increased (P < .01) during the first postnatal day. Carcass fat deposition and fat oxidation increased linearly (P < .01) by .36 and .20 g/kg of average BW per 1.0 g/kg of average BW increase in fat intake, respectively. We suggest that increasing the fat content in colostrum has little effect on voluntary colostrum intake, and the practice may be an efficient method for improving the energy supply to newborn pigs.
在出生后的第一天，对25头新生仔猪测定了初乳脂肪水平对自愿采食初乳量和代谢能摄入量的影响。在一窝仔猪中，选取5头仔猪在哺乳前获取，并根据出生后2小时的初始体重（BW）分配到以下五种处理之一：处死或自由采食含2.5%、5.0%、7.5%或10.0%总脂肪的母猪初乳。每隔60分钟进行一次总共24次投喂，在最后一次投喂后1小时处死仔猪。初乳总摄入量平均为584.8±42克（即平均体重每千克436克），前两次投喂量占总摄入量的19.8%。脂肪水平每增加1%，初乳摄入量以平均体重每千克5.9克的幅度呈线性下降（P<0.08）。然而，脂肪摄入量每增加1.0克/千克平均体重，总能（GE）和代谢能（ME）摄入量分别以平均体重每千克7.65千卡和4.09千卡的幅度呈线性增加（P<0.01）。出生后第一天，脂肪组织脂蛋白脂肪酶增加（P<0.01）。脂肪摄入量每增加1.0克/千克平均体重，胴体脂肪沉积和脂肪氧化分别以平均体重每千克0.36克和0.20克的幅度呈线性增加（P<0.01）。我们认为，提高初乳中的脂肪含量对自愿采食初乳量影响不大，这种做法可能是提高新生仔猪能量供应的有效方法。
