INTISARIPenelitian bertujuan untuk menemukan penduga terbaik bagi bobot badan (BB) calon pejantan (jantan muda) sapi Bali dari dimensi ukuran tubuhnya: lingkar dada (LD), panjang badan (PB) dan tinggi badannya (TB). Tiga puluh satu calon pejantan sapi Bali (umur 1,5 sampai 2 tahun) digunakan dalam penelitian ini. Analisis Best Subsets Regression digunakan untuk menemukan model pendugaan bobot badan terbaik bagi calon pejantan sapi Bali. Hasil penelitian menunjukkan bahwa lingkar dada merupakan penduga bobot badan terbaik bagi calon pejantan sapi Bali bila pendugaan dilakukan hanya menggunakan satu peubah bebas, melalui formula: BB = 2,62 LD -192. Bila pendugaan bobot badan tersebut menggunakan dua peubah bebas, maka lingkar dada dan panjang badan calon pejantan sapi Bali merupakan penduga terbaik, melalui formula: BB = 2,36 LD + 0,78 PB -236. Pendugaan bobot badan calon pejantan sapi Bali umur 1,5 sampai 2 tahun menggunakan tiga peubah bebas (LD, PB, dan TB), dapat dilakukan menggunakan formula berikut: BB = 2,30 LD + 0,733 PB + 0,139 TB -237, namun akan jauh lebih efisien dan efektif bila pendugaan bobot badan tersebut menggunakan formula: BB = 2,36 LD + 0,78 PB -236, karena tingkat akurasi formula tersebut lebih baik. Formula-formula tersebut sangat baik diaplikasikan pada peternakan tradisional di suatu wilayah dalam rangka memilih calon pejantan yang baik untuk wilayah tersebut.(Kata kunci: Calon pejantan sapi Bali, Bobot badan, Dimensi ukuran tubuh) ABSTRACT This study aims to find the best estimation of body weight (BB) of Bali bulls candidates (young male) by body dimensions: chest circle (LD), body length (PB) and body height (TB
This study aims to observe the growth of Peranakan Etawah goats (PE goat) that are maintained intensive in Manokwari regency. The research material used was 50 PE goats that were born from 42 parents. The research method used is suvei with case study technique. The sample of pregnant goat used was taken by purposive sampling. The observed variables were birth weight, body weight 90 days and daily weight gain of goats studied. Data on the results of the study were analyzed using the t-test to compare growth of the goats observed by type of birth (single vs twin) and sex (male vs female). The results of statistical analysis showed that birth weight (3.01 ± 0.44 kg) and body weight 90 days (9.09 ± 1.77 kg) in single-birth-type PE goats were higher (P <0.05) than birth weight ( 2.76 ± 0.44kg) and body weight of 90 days (8.07 ± 1.67kg) in twin goat birth type. However, the single birth weight of single-birthed PE goats (65.58 ± 17.53g) was statistically not different (P> 0.05) with the multiple births (58.96 ± 19.23g). Also known that birth weight (3.16 ± 0.47 kg) and body weight 90 days (9.22 ± 1.77 kg) in male PE goats was higher (P <0.05) than birth weight (2.68 ± 0.29kg) and body weight 90 days (8.27 ± 1.71kg) in the female. While the weight of male goat PE (64.26 ± 18.86g) was statistically not different (P> 0.05) with the female (62.18 ± 17.79g).
The research is aimed to investigate the effect of fasting at grower period (3 to 6 week of age) on pattern of egg production and distribution of oviposition time in Japanese quail. Three hundreds and forty female of Japanese quails at 3 week of age were used in this research. The treatments were (1) without fasting or control, (2) skip-a-day fasting, (3) nighttime fasting: 18.00 p.m to 06.00 a.m.; and (4) daytime fasting: 06.00 a.m to 18.00 p.m. Data collected were age of the onset of laying (sexual maturity) until 12 weeks of age. The results showed that (1) the peak of egg production of control group was faster (10 weeks of age) and higher (89,3%) than the quails of groups fasting at grower period, but the peak of egg production was maintained longger than control group; (2) there was a fact that the egg production compensation was happened in fasting groups at grower period; (2) in quails group of daytime fasting at was grower period the distribution of oviposition time was relative smoother between periode observed: 12.00 -18.00 p.m., 18.00 -24.00 p.m. and 00.00 -06.00 a.m., than other treatments.
Penelitian ini bertujuan untuk mengetahui efektifitas pakan substitusi fodder jagung terhadap produktifitas kelinci. Penelitian ini dilaksanakan dengan menggunakan metode dalam kajian ini yaitu Rancangan acak lengkap yang terdiri dari 4 perlakuan dan 3 ulangan sehingga terdapat 12 unit percobaan dan setiap unit memiliki 1 ekor kelinci dengan jenis rex dan berumur 18 minggu. Adapun perlakuan yang di uji yaitu pemberian rumput dan fodder jagung yang mana P0 tanpa fodder jagung, P1 menggunakan fodder jagung 5%, P2 menggunakan fodder jagung 10%, dan P3 menggunakan fodder jagung 15%. Pengambilan data dilakukan 4 kali selama 1 bulan, dilakukan dengan parameter yang teliti yaitu pertambahan bobot badan, pertambahan bobot badan harian, konsumsi pakan dan konversi pakan. Hasil yang dapat diketehui bahwa pertambahan bobot badan 900 g/ekor/30 hari (P2), Pertambahan bobot badan harian 32.14 gram (P2), konsumsi pakan 136.2067 gr (P3) dan konversi pakan 4.83 gram/ekor (P2).
Penelitian ini bertujuan untuk mendeskripsikan pertumbuhan ayam kampung yang dipelihara intensif di kabupaten Manokwari. Sebanyak 65 ayam kampung (29 jantan dan 36 betina), berasal dari hasil penetasan 144 butir telur ayam kampung yang diambil secara acak di beberapa peternak di wilayah kabupaten Manokwari, provinsi Papua Barat, digunakan dalam penelitian ini. Ayam kampung hasil penetasan ini dipelihara secara intensif hingga berumur 4 bulan. Selama pemeliharaan, ayam-ayam diberi ransum berkadar protein 21 - 23% dan ME. 3000 - 3200 kcal/kg, dan ditimbang berat badannya setiap bulan. Hasil penelitian menunjukkan bahwa rata-rata berat badan ayam kampung penelitian pada yang jantan dan betina umur 1 bulan sebesar 363,8±48,1 g dan 321,9±55,8 g; umur 2 bulan sebesar 820,3±153,9 g dan 673,6±140,2 g; umur 3 bulan sebesar 1.324,5±319,6 g dan 1.073,6±265,1 g; umur 4 bulan sebesar 1.877,6±449,5 g dan 1.503,3±416,0 g; dan pertambahan berat badan (PBB) umur 1 hingga 4 bulan sebesar 1.513,8±426,8 g dan 1.181,4±381,9 g. Rata-rata berat badan dan PBB jantan dan betina di atas berbeda signifikan (P<0,05). Informasi hasil-hasil penelitian terdahulu pada kondisi serupa (pemeliharaan intensif) memberikan hasil yang beragam sehingga disimpulkan bahwa keragaman genetik pertumbuhan ayam kampung tergolong tinggi.
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