Penelitian ini bertujuan untuk mengetahui pengaruh komposisi dan jenis hijauan beragam terhadap sifat fisik dan kecernaan ransum pada sapi Bali. Percobaan menggunakan Rancangan Acak Kelompok (RAK) terdiri dari 4 perlakuan ransum dengan 3 kelompok berat badan sebagai ulangan. Perlakuan ransum disusun berdasarkan bahan kering adalah: (A) rumput gajah 45% + jerami padi 0% + gamal 15% + kaliandra 10% + konsentrat 30%; (B) rumput gajah 30% + jerami padi 10% + gamal 20% + kaliandra 10% + konsentrat 30%; (C) rumput gajah 15% + jerami padi 20% + gamal 25% + kaliandra 10% + konsentrat 30% dan (D) rumput gajah 0% + jerami padi 30% + gamal 30% + kaliandra 10% + konsentrat 30%. Peubah yang diukur adalah sifat fisik dan kecernaan ransum. Data dianalisis menggunakan sidik ragam. Hasil penelitian menunjukkan, sapi Bali yang diberi perlakuan D memiliki densitas tertinggi (P<0,05) yaitu 0,313 g/ml, KCBK dan KCPK tertinggi (P<0,05) masing-masing 67,78% dan 71,42% namun KCSK terendah (P<0,05) yaitu 49,34%. Berdasarkan hasil penelitian ini dapat disimpulkan bahwa ransum D mampu meningkatkan densitas dan daya serap air serta meningkatkan KCBK dan KCPK ransum.
ABSTRAKPenelitian ini bertujuan untuk mengetahui keseimbangan energi dan protein sapi Bali jantan yang diberi ransum dengan level protein dan energi. Rancangan yang digunakan : rancangan acak kelompok (RAK) dengan lima perlakuan dan tiga kelompok bobot badan. Bobot sapi berkisar 198,00 kg. Kelima perlakuan ransum yaitu: (A) 15,42% protein dan GE 4,02 Mkal/kg DM; (B) 14,74% protein dan GE 3,75 Mkal/kg DM; (C) 13,11% protein dan GE 3,79 Mkal/kg DM; (D) 10,33% protein dan GE 3,92 Mkal/kg DM dan (E) 10,58% protein dan GE 3,53 Mkal/kg DM. Peubah yang diukur : konsumsi energi, konsumsi protein, energi tercerna, protein tercerna, energi termetabolis, retensi energi dan retensi protein. Hasil penelitian menunjukkan konsumsi energi, energi tercerna dan energi termetabolis tidak menunjukkan perbedaan yang nyata (P>0,05), sedangkan konsumsi protein, protein tercerna, retensi energi dan retensi protein pada perlakuan A nyata lebih tinggi (P<0,05) dibandingkan dengan perlakuan E. Hasil penelitian ini dapat disimpulkan konsumsi energi, konsumsi protein, energi tercerna, protein tercerna, retensi energi dan retensi protein tertinggi pada imbangan 15,42% protein dan GE 4,02 Mkal/kg DM.Kata kunci: keseimbangan protein dan energi, sapi bali jantan ABSTRACTThe research was conducted to determine protein to energy ratio of Bali bull rations (body weight ranged from 198.67 to 207.00 kg) fed at certain levels. The experiment used a randomized block design (RCBD) with five treatments and three weight group replications. The treatments consisted of various P-E ratios, namely; (A) protein 15. 42% and GE 4.02 Mcal / kg DM; (B) protein 14.74% and GE 3.75 Mcal / kg DM; (C) protein 13.11% and GE 3.79 Mcal / kg DM; (D) protein 10.33% and GE 3.92 Mcal / kg DM and (E) 10.58% and GE 3.53 Mcal / kg DM. The variables measured were the consumption of energy and protein, digestible energy, digestible protein, metabolizable energy, energy and protein retention. The results showed that the energy consumption, digestible energy and metabolizable energy did not show significant differences (P> 0.05), whereas protein consumption, digestible protein, energy and protein retention for treatment A was significantly higher (P<0,05) than treatment E. In conclusion, treatment A (15,42% protein and GE 4,02 Mcal/kg DM )resulted in the highest level of the energy and protein consumption, digestible energy, digestible protein, and retention of energy and protein.Keywords: protein to energy ratio, bali cattle. PENDAHULUANSapi Bali merupakan salah satu plasma nutfah asli Indonesia yang mempunyai potensi genetik dan nilai ekonomis yang cukup tinggi untuk dikembangkan sebagai ternak potong. Sapi Bali memiliki beberapa keunggulan antara lain : tingkat reproduksi yang sangat Vol 17 (1) Keseimbangan Energi dan Protein ... (Mariani et al.) 47
The aim of the study was to investigate the effect of dietary inclusion of purslane meal (Portulaca oleraceae) and sardines fish oil as a source of omega-3 fats on production performance and carcass quality of broiler chickens. A total of 180 one-day old unsexed Cobb broiler chickens were used in this study. The broilers were randomly allocated into 30 pens with each pen consisted of 6 birds. The pens were randomly assigned to five dietary treatments with 6 replicates (36 birds per treatment). The diets were prepared from a basal diet (P0). The experimental diets were formulated by supplementing the basal diet containing 1.5% sardines fish oil and levels of purslane meal 0 (P1), 6 (P2), 12 (P3), and 18.0% (P4). Water and diets were provided ad libitum for a period of 35 days. Data production parameters were recorded weekly. The data were analysed using analysis of variance (ANOVA). Differences between treatment means were further analysed using Duncan’s New Multiple Range Test. Results showed that there were no significant effects on production parameters and carcass weight by adding of dietary purslane meal up to a level of 12%. However, supplementation of 18% purslane meal (P4) resulted in a decrease in body weight from 1718 g (P0) to 1278 g (P4) and in carcass weight from 1139 g (P0) to 811.5 g (P4). It was concluded that dietary levels of purslane meal up to a level of 12% didn’t have negative effect on production performance and carcass quality of broiler chickens.
Penelitian bertujuan untuk mengetahui pengaruh pemberian hijauan beragam dengan suplementasi konsentrat “Molamix” terhadap kecernaan bahan kering dan nutrien ransum. Percobaan menggunakan rancangan acak kelompok (RAK) dengan tiga perlakuan dan tiga kelompok/blok sebagai ulangan. Ternak yang digunakan sebanyak sembilan ekor (unsex) dengan kisaran berat badan awal 19,57 ± 2,4 kg. Ketiga perlakuan tersebut adalah perlakuan A: 70% hijauan (rumput lapangan) + 30% konsentrat ”molamix”; perlakuan B: 80% hijauan (40% rumput lapangan + 60% gamal) + 20% konsentrat ”molamix”; dan perlakuan C: 90% hijauan (20% rumput lapangan + 60% gamal + 20% waru) + 10% konsentrat ”molamix”. Air minum diberikan secara ad libitum. Penelitian menyimpulkan bahwa pemberian 90% pakan hijauan beragam (rumput, gamal, dan waru) dengan 10% konsentrat ”Molamix” dapat menghasilkan peningkatan kecernaan bahan kering, bahan organik, protein kasar, dan kecernaan serat kasar.
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