Size, Shape and Prediction of Body Weight Garut Sheep, Thin-Tailed Sheep and Fat-Tailed Sheep

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Monday 13 November 2017

Size, Shape and Prediction of Body Weight Garut Sheep, Thin-Tailed Sheep and Fat-Tailed Sheep

Tirtosiwi, B. U., R. H. Mulyono and I. Inounu

Garut sheep, Thin-Tailed sheep and Fat-Tailed sheep are breeds of sheep that have the potential to be bred in Indonesia. This research is carried out to measure the size and shape of sheep by using Principal Component Analysis (PCA) and to estimate the body of Garut sheep, Thin-tailed sheep and Fat-tailed sheep by using Principal Component Regression Analysis (PCRA). T2-Hotelling results showed that sheeps observed were significantly different between breeds. This is due to differences in groups of sheeps. Principal Component Analysis results showed that size of Garut sheep more higher than Thin-Tailed sheep and Fat-Tailed sheep. The differences of shape was indicates the differences genetics of sheep were observed. Slices of crowd chart of Garut sheep and Thin-Tailed sheep higher than Garut sheep and Fat-Tailed sheep. That was suitable with the origin of Garut sheep are cross by Merino sheep, Kaapstad sheep and Thin-Tailed sheep so that Garut sheep and Thin-Tailed sheep have more kindsip than Garut sheep and Fat-Tailed sheep. Principal Component Regression Analysis results showed that the primary identity for body measurements of Garut sheep, Thin-Tailed sheep and Fat-Tailed sheep were chest girth (X9) and it was the most influential variable to predict body weight of Garut sheep, Thin-Tailed sheep and Fat-Tailed sheep. That was showed by highest elasticity values of chest girth (X9), which each gained at 0,344; 0,420; 0.414 for rams of Garut sheep, Thin-Tailed sheep and Fat-Tailed sheep and ewes at 0,446; 0,220; 0,739. Elasticity obtained showed that each increase in one cm in chest girth (X9) in rams of Garut sheep, Thin-Tailed sheep and Fat-Tailed sheep will each increase body weight 190,96 g; 187,58 g; 163,37 g; while ewes will increase the body weight of 169,47 g; 75,56 g; 254,93 g. Beside chest girth (X9), rump width (X7) and cannon circumference (X10) has considerable effect on body weight of Garut sheep, Thin-Tailed sheep and Fat-Tailed sheep. That was indicates increase of one cm rump width (X7) and cannon circumference (X10) rams of Garut sheep, Thin-Tailed sheep and Fat-Tailed sheep will increase body weight 486,65 g; 425,99 g; 457,98 g and 1.364,87 g; 1.137,01 g; 679,58 g; while ewes will increase body weight amounted to 680,61 g; 298,67 g; 690,05 g and 934,55 g; 116,59 g; 586,51 g.

Keywords: Sheep, T2-Hotelling, Principal Component Analysis, Principal Component Regression Analysis, Elasticity

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Labels: Journal

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