Pengembangan Model Pita Ukur Dan Rumus Pendugaan Bobot Badan Berdasarkan Lingkar Dada Pada Ternak Kerbau

Abstract

Penelitian ini bertujuan untuk menguji keandalan atau keakuratan berbagai jenis pita ukur danmengembangkan model pita ukur dan rumus pendugaan bobot badan berdasarkan ukuran lingkar dadakerbau Murrah dan kerbau Rawa. Penelitian ini dilaksanakan diBPTU-HPT Siborong – Borong dandi Peternakan rakyat yang terdapat di kabupaten Deli Serdang. Dari bulan April sampai Mei 2015.Pita ukur yang adalah pita ukur Agrotech, kemudian menggunakan rumus Schoorl dan Smith sebagaiperbandingan, serta menggunakan analisa korelasi sederhana. Hasil penelitian diperoleh bahwapendugaan bobot badan untuk kerbau Sungai dan kerbau Lumpur dengan menggunakan pita ukurAgrotech diperoleh penyimpangan 23,94% untuk ternak jantan dan 34,22% untuk ternak betina.Persamaan regresi untuk ternak jantan Y = -266,456 + 3,703X dan ternak betina Y = -351,218 +4,169X dengan nilai penyimpangan regresi 1,74% (jantan) dan 3,49% (betina). Kesimpulan,pendugaan bobot badan yang paling mendekati pada ternak kerbau Murrah dan kerbau Rawa adalahmenggunakan rumus regresi dengan rincian setiap pertambahan 1cm lingkar dada kerbau dapatmenaikkan berat badan 4 kg.

Correlation Between Morphometric Traits and Body Weight in Fat-Tailed Sheep

“…The estimation of body weight using the chest circumference regression equation shows an average deviation of approximately 8.18%. This result indicates that estimating body weight based on the morphometric variable of chest circumference is accurate, as the deviation is below 10% [6].…”

“…The formula for the correlation coefficient (r) used according to Wahyudi et al [5] is as follows: : regression coefficient To determine the accuracy of the prediction formula, the magnitude of the deviation between the body weight estimated using the formula and the body weight measured using a scale is calculated using the following formula. [6]: 3 Results and Discussion…”

“…This result indicates that for every 1 cm increase in the animal's height, there will be an approximate 0.72 kg increase in body weight. The estimation of body weight based on height shows an average deviation of approximately 13.08%, indicating that this method may be less accurate in predicting body weight precisely, especially when the deviation exceeds 10% [6].…”

Body measurements and body weight from the crossing of Swamp Buffalo with Murrah Buffalo in Tanjung Bonai Regency, Lintau Buo Utara Subdistrict, Tanah Datar District

“…-Body weight; follow the equation [13] Male buffalo body weight: BW = -266,456 + 3,703 CS Female buffalo body weight: BW = -351,218 + 4,169 CZ NB: BW = Body Weight CS = Chest Circumference -Chest Circumference: examined through measure scale right behind scapula via Gumba (BSN, 2011) -Body length: examined through measure stick from Processus spinous vertically to os ischium/scapula cartilage [14]. -Body height: measured vertically from Scapula cartilage to the ground [15] through a measurement stick.…”

“…This research estimated body weight equation regression 13 . Male body weight = -266,456 + 3,703 chest circumference.…”