Mahan D C, Shields R G
Animal Sciences Department, The Ohio State University, and The Ohio Agricultural Research and Development Center, Columbus 43210-1095, USA.
J Anim Sci. 1998 Feb;76(2):513-21. doi: 10.2527/1998.762513x.
The amino acid composition of the body components (carcass, hair, whole blood, and a composite of the other body tissues) were determined from a total of 81 crossbred pigs at 10 weight intervals from birth to 145 kg body weight. Body component amino acid compositions (g/100 g protein) were multiplied by their respective protein contents, resulting in calculated whole-body amino acid compositions. From 8.5 to 145 kg body weight, the amino acid compositions were similar within each body component but differed between body components. There was a higher concentration of carcass lysine, arginine, and histidine (P < .01) in the carcass, and isoleucine (P < .12), threonine (P < .15), and methionine (P < .08) tended to be higher than in the composite of the other body tissue. Whole blood was, however, higher in leucine, valine, and lysine, and hair was higher in cystine than the carcass. The relative concentration of lysine in the whole body increased to about 37 kg body weight and reached a plateau, whereas the other essential amino acids increased to 8.5 kg and then reached a plateau. Tryptophan, however, decreased from birth to 8.5 kg and then remained at a similar concentration to 145 kg body weight. Whole-body amino acid composition of pigs in our study was generally similar to that noted in other scientific reports, but there was a wide variation in amino acid values between studies.
测定了81头杂种猪从出生到体重达145千克期间，在10个体重间隔下身体各组成部分（胴体、毛发、全血以及其他身体组织的复合体）的氨基酸组成。将身体各组成部分的氨基酸组成（克/100克蛋白质）乘以各自的蛋白质含量，从而得出计算出的全身氨基酸组成。从体重8.5千克到145千克，各身体组成部分内的氨基酸组成相似，但不同身体组成部分之间存在差异。胴体中赖氨酸、精氨酸和组氨酸的浓度较高（P < 0.01），异亮氨酸（P < 0.12）、苏氨酸（P < 0.15）和蛋氨酸（P < 0.08）的浓度往往高于其他身体组织的复合体。然而，全血中的亮氨酸、缬氨酸和赖氨酸含量较高，毛发中的胱氨酸含量高于胴体。全身赖氨酸的相对浓度在体重约37千克时增加并达到平台期，而其他必需氨基酸在体重8.5千克时增加然后达到平台期。然而，色氨酸从出生到8.5千克体重时减少，然后在体重145千克时保持相似浓度。我们研究中猪的全身氨基酸组成总体上与其他科学报告中指出的相似，但不同研究之间氨基酸值存在很大差异。
