Principal Component Analysis (PCA) in the Body Measurements of Nguni Cows

Tyasi, Thobela Louis

doi:10.17582/journal.pjz/20210605170634

Cited by 2 publications

(1 citation statement)

References 13 publications

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“…[3] said production performance is influence between genetic factors and environment factor. Genetic factor in animal is difficult to analysis, so it must be estimated depend on result of quantitative performance [4,5]. [6] said quantitative was controlled by a pair of genes with large number and expression it limited by environment.…”

Section: Introductionmentioning

confidence: 99%

Exterior characteristics of male Sakub sheep in the different ages and types

Hamdani,

Panjono,

Bintara

et al. 2024

IOP Conf. Ser.: Earth Environ. Sci.

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This study aims to determine the exterior characteristics of male Sakub sheep with different ages and types. The study was conducted on Sakub sheep contest in the Pandansari village, Brebes. A total of 134 heads of male Sakub sheep with horns (SSWH: 95 heads) and Sakub sheep without horns (SSNH; 39 heads) were collected. Both consist of two categories of rams (aged 12 month-36 months) and young rams (aged 0-11 months). Four exterior characters (skin color-SC; horn shape-HS; tail shape-TS; face shape-FS) and 3 quantitative characteristics of the shape (body weight-BW; body length-BL; and height shoulder-HS) were scored. The descriptive analysis was used to examine the data. The result showed that ram SSWH has BW=67.23 ± 15.59 kg; BL= 75.75± 6.23 cm; HS= 75.22 ± 5.17cm. The Ram SSNH has BW =62.72 ± 14.50kg; BL = 76.11 ± 5.91cm; HS= 72.39 ± 4.54cm. Qualitative results such as CS, SH, ST and SF both of them have specifications for each other. Additionally, ram Sakub sheep with horns (SSWH) has higher score compare to SSNH for height shoulder. In young ram HS, BW and BL showing not different each other’s. The correlation value between body weight with the other measurements has a positive correlation. Qualitative results explained for us SSWH and SSNH have dominant trait. They are color of skin is white, big horn and back curved, shape of face is convex and shape of tail is long and hang straight. In conclusion, the exterior characteristics of Sakub Sheep with horn and without horn have different performances in both quantitative and qualitative traits.

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Section: Introductionmentioning

confidence: 99%

Exterior characteristics of male Sakub sheep in the different ages and types

Hamdani,

Panjono,

Bintara

et al. 2024

IOP Conf. Ser.: Earth Environ. Sci.

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The principal component of body height linear type traits and the relationship level to milk yields as Holstein cattle selection criterion

PRABOWO,

GARİP

2023

Ankara Üniversitesi Veteriner Fakültesi Dergisi

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The essential body height characteristics associated with milk yields need to be better identified because research on that topic is rarely undertaken. On the other hand, body height measurements are widely known to be related to cow live weight. In particular, this study sought to identify the most relevant body height dimension trait as selection criteria for the milk yield increase program. The test animals for the study were 122 heads of Holstein cows, and seven characteristics of body height were recorded for each cow separately. Principal component analysis (PCA), correlation, and regression were used to analyze the data. As an analytical tool, the R program 4.2.1 with RStudio was employed. The discovered primary elements of PCA's output were the wither height (WTH), back height (BCH), rump height (RMH), thurl height (TLH), tail-head height (THH), and pins height (PNH). Afterward, the correlation and regression analysis findings showed that the rear udder height (RUH) had the highest priority in correlating with milk yields, followed by the thurl height (TLH). In conclusion, it is proposed that the RUH be utilized for the cow selection program while the TLH is used for the calf and heifer selection program. However, wither height (WTH) is the fittest metric for beef cattle and barn facility-related research.

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Principal Component Analysis (PCA) in the Body Measurements of Nguni Cows

Abstract: Authors' Contribution ZU conducted field surveys and collected data into a meaningful manuscript under the supervision of SM and ZI. FA and NA reviewed the manuscript for grammatical mistakes. AMK helped in tables formation and scientifically proofread and formatted the manuscript.

Cited by 2 publications

References 13 publications

Exterior characteristics of male Sakub sheep in the different ages and types

Exterior characteristics of male Sakub sheep in the different ages and types

The principal component of body height linear type traits and the relationship level to milk yields as Holstein cattle selection criterion

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