A COMPARISON OF ULTRASONICS WITH THE RULER PROBE FOR THE PREDICTION OF CARCASS YIELD IN SWINE
A COMPARISON OF ULTRASONICS WITH THE RULER PROBE FOR THE PREDICTION OF CARCASS YIELD IN SWINE
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超声波与标尺探针预测猪胴体产量的比较
DOI：
10.4141/cjas72-075
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发表时间：
1972
影响因子：
1
通讯作者：
G. W. Rahnefeld
中科院分区：
文献类型：
--
作者：
W. T. Gillis;G. Bowman;H. Greiger;G. W. Rahnefeld
本研究以550头猪为试验对象，探讨了超声波和直尺探头估测胴体产率的准确性和精密度。进行了三个实验，包括在试验站和农场条件下收集数据。在三个不同实验中的每一个中，对活体动物进行各种超声波和标尺探针测量以及尸体测量。实验1包括156公猪在一个中心测试站;在实验2中，测量收集了304公猪在20个农场在现场条件下;和实验3包括一个切断测试59 R. O. P.测试猪，以及获得类似于实验1和2中收集的活测量。此外，还进行了中线外脂肪和瘦肉探针。研究结果表明，标尺探针法和超声波法测量生猪背膘厚度具有可比性，且准确度较高。此外，腰部眼面积可以准确地测量。
A total of 550 pigs were used in a study to examine the accuracy and precision of ultrasonics and the ruler probe for the estimation of carcass yield. Three experiments were conducted that involved collecting data under test station and farm conditions. Various ultrasonic and ruler probe measurements were made on the live animals as well as carcass measurements in each of the three different experiments. Experiment 1 included 156 boars in a central test station; in experiment 2, measurements were collected from 304 boars on 20 farms under field conditions; and experiment 3 consisted of a cut-out test on 59 R.O.P. test pigs as well as obtaining live measurements similar to those collected in experiments 1 and 2. In addition, off-midline fat and lean probes were taken. Results of the study indicate that the ruler probe method and the ultrasonic method are comparable with each other, and quite accurate, for the measurement of backfat thickness in live swine. Furthermore, loin eye area can be accurately measu...