The objective was to determine correlations between individual bones and total body bone ash to identify the bone that is most representative of total body bone ash in growing pigs. Twenty growing pigs were allotted to 1 of 2 diets that were formulated to contain 60% or 100% of the requirement for standardized total tract digestible (STTD) P. Both diets had an STTD Ca to STTD P ratio of 1.90:1. Growth performance and carcass weights were determined. Metacarpals, metatarsals, femur, tibia, fibula, 3rd and 4th ribs, and 10th and 11th ribs, and all other bones from the left half of the carcass were collected separately. Each bone was defatted and ashed. Pigs fed the diet containing 100% of required Ca and P had greater (P < 0.05) average daily gain, gain to feed, and ash concentration (%) in total and all individual bones except femur and fibula compared with pigs fed the diet containing 60% of required Ca and P. Calcium and P concentrations in bone ash were not affected by dietary treatments. Weights (g) of bone ash, bone Ca, and bone P were greater (P < 0.05) or tended to be greater (P < 0.10) for pigs fed the diet containing 100% of required Ca and P. Correlation coefficients between the weight of ashed metacarpals, metatarsals, and tibia and the weight of total bone ash were >0.95. In conclusion, metacarpals, metatarsals, and tibia were more representative of total body bone ash compared with other bones.

中文翻译：

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掌骨、跖骨和胫骨中的灰分、钙和磷含量与生长猪全身骨灰分的相关性要好于其他骨骼中的灰分、钙和磷含量

目的是确定个体骨骼和全身骨灰分之间的相关性，以确定最能代表生长猪全身骨灰分的骨骼。将 20 头生长猪分配到 2 种日粮中的 1 种，日粮配方中的标准全肠道可消化 (STTD) P 含量为 60% 或 100%。两种日粮的 STTD Ca 与 STTD P 比率均为 1.90:1。测定生长性能和胴体重量。分别收集胴体左半部的掌骨、跖骨、股骨、胫骨、腓骨、第 3 和第 4 肋骨、第 10 和第 11 肋骨以及所有其他骨骼。每根骨头都脱脂和灰化。饲喂含有 100% 所需钙和磷的日粮的猪的平均日增重更高（P < 0.05），饲料增重，与饲喂含有 60% 所需钙和磷日粮的猪相比，除了股骨和腓骨之外的所有单个骨骼的总和灰分浓度 (%)。骨灰分中的钙和磷浓度不受日粮处理的影响。对于饲喂含有 100% 所需 Ca 和 P 的日粮的猪，骨灰、骨 Ca 和骨 P 的重量 (g) 较大 (P < 0.05) 或趋于较大 (P < 0.10)。灰化的掌骨、跖骨和胫骨的重量以及总骨灰的重量＞0.95。总之，与其他骨骼相比，掌骨、跖骨和胫骨更能代表全身骨灰。对于饲喂含有 100% 所需 Ca 和 P 的日粮的猪，骨 Ca 和骨 P 更大（P < 0.05）或倾向于更大（P < 0.10）。灰化的掌骨、跖骨重量之间的相关系数，胫骨和总骨灰的重量＞0.95。总之，与其他骨骼相比，掌骨、跖骨和胫骨更能代表全身骨灰分。对于饲喂含有 100% 所需 Ca 和 P 的日粮的猪，骨 Ca 和骨 P 更大（P < 0.05）或倾向于更大（P < 0.10）。灰化掌骨、跖骨重量之间的相关系数，胫骨和总骨灰的重量＞0.95。总之，与其他骨骼相比，掌骨、跖骨和胫骨更能代表全身骨灰。