Abstract
Biplot simulation using factor analysis rotation promax kapa 90 was conducted to determine the growth rate of body dimension in female Bali duck of 0-16 week-old. The result of the biplot simulation showed that the body dimension of female Bali ducks that belongs to slow growth rate was in quadran II including the length of radius ulna, femur, tarsal and humerus. The body dimensions of female Bali ducks with the moderate growth rates were in quadrant I such as the length of carpal, chest circumference, body weight, the length necks, the length of digital 1 and the length of head. The body dimension with fast growth rate such as head circumference, neck circumference, abdominal circumference, and the length of digital 2, 3 and 4, and the length of tibia-fibula. Based on the ages, the coordinates distances in two dimension Eigen vector space were as follows. At the most distance position was at the age of 0-2 weeks, followed by the age of 2-4 weeks, and finally with closest distance was at the age of maturity.
Highlights
In animals, the growth of body dimension during their growth phase usually follows exponential function with different growth rates among many different parts of the body
Sampurna [2] reported that the development of body dimensions in Bali duck can be determined by allometric equation
The result showed that 98.05% of the 19 body dimensions in female Bali ducks with many differences in the growth rates can be demonstrated as biplot of Eigen space with 2 dimensions
Summary
The growth of body dimension during their growth phase usually follows exponential function with different growth rates among many different parts of the body. Sampurna [2] reported that the development of body dimensions in Bali duck can be determined by allometric equation. Based on the allometic equation, the development of such body dimension in Bali Duck started from head and neck, and proceeded by the development in the back area. The development of body dimension occurs in other parts of the body starting from legs, lower and upper thighs, chest and at the wings. Sampurna dan Suatha [3] reported that the growth of the body dimension in male Bali cattle is started from the neck, head, back parts of the body, and in the front parts of the body. The body dimensions that develop and grow early are chest circumference, preceded by abdominal circumference, front and back neck circumference. Sampurna [4] showed that the fastest growth in livestock occurs when they reach inflexion point
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