Chemical Composition of Longissimus Dorsi and Biceps Femoris on Different Slaughter Weight of Local Male Sheep Reared in the Village

Quality of meat can be assessed from the change of its chemical components. Characteristics of meat chemical composition depend on species, age, sex, feed, location and function of muscle section in body. The objective of the research was to study meat chemical composition of local male sheep on different slaughter weight and different muscle. Local male sheep which were used as subject research obtained from Temanggung, i.e. healthy male sheep, aged 1.5-12 months; slaughtered at 6 categories of slaughter weight ranging from 5 to 30 kg. The sheep was slaughtered and sampled for chemical composition determination of Longissimus dorsi (LD) dan Biceps femoris (BF). The nested ANOVA was used to analyze data and any differences among the groups were further tested using Duncan Multiple Range Tests (DMRT). The results showed that moisture, ash, fat and cholesterol content of the meat from different slaughtered weight were not significant (P>0.05). The increase of slaughter weight significantly (P0.05). The conclusion of the research were (1) moisture, ash, fat and cholesterol content of local male sheep meat from different slaughtered weight were not significant, but protein and vitamin A content of the meat from different slaughtered weight were significant, (2) chemical composition of local male sheep from LD and BF were not significant. (Animal Production 8(1): 1-7 (2006

Profil Asam Lemak Daging Domba Lokal Jantan yang Dipelihara di Pedesaan pada Bobot Potong dan Lokasi Otot yang Berbeda

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Profil Asam Lemak Daging Domba Lokal Jantan yang Dipelihara di Pedesaan pada Bobot Potong dan Lokasi Otot yang Berbeda

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Edible Carcass Production of Thin Tail Lambs Fed Complete Feed Composed of Various Agricultural By-products

Sixteen thin tail lambs, 3 - 5 months old with the average body weight of 13.3 + 1.46 kg (CV=11%) were randomly assigned 4 kinds of complete feed based on completely randomized design with four treatments and four replications), the feed composed of agricultural by-products, T1= rice straw+ soybean meal, T2=corn straw+soybean by-product, T3=peanut straw + copra meal, and T4=sugar cane top+tofu by-product. After 3 months experimental period , all of the experimental animals were slaughtered to measure the edible portion value of those carcasses. Result of the experiment indicated that no differences were observed between treatments for edible portion of carcass (P>0.05). The average of edible portion production were recorded as much as 6.05 kg or 73.83%. It might be concluded that various agricultural by-products could be utilized as complete feed to improve nutritional status and carcass production. Keywords: thin tail lamb, edible portion, agricultural by-products, complete feed

FATTY ACIDS PROFILE OF LAMB ON FEEDLOT SYSTEM WITH DIFFERENT PROTEIN AND ENERGY LEVELS AND DIFFERENT SLAUGHTER WEIGHT

The objective of the research was to study fatty acids profile of lamb on feedlot system with different protein and energy levels and different slaughter weight. Twenty four males local lamb, aged around 3 – 5 months with body weight of 8.7 – 15.5 kg (CV = 15.01%) were set in a generalized randomized (complete) block design with 4 treatments: P1 (CP 14.48% and TDN 50.46%), P2 (CP 17.35% and TDN 52.61%), P3 (CP 15.09% and TDN 58.60%), and P4 (CP 17.42% and TDN 57.46%). The group of sheep with light weight was slaughtered in the slaughter weight (SW) of 15 kg, the group of sheep with the average weight was slaughtered on the SW of 20 kg, and the group of sheep with the heavy weight was slaughtered on the SW of 25 kg. The ANOVA was used to analyze data and any differences among groups were further tested using Duncan's Multiple Range Tests (DMRT). The result showed that fatty acid of lamb meat on different protein and energy levels were not significantly different (P>0.05), except dokosaheksaenoat (DHA). Palmitic, oleic, klupanodonic and dokosaheksanoic were significantly different (P<0.05). Fatty acid of lamb meat from higher to lower content were oleic (C18:1) = 45.29%, palmitic (C16:0) = 26.75%, stearic (C18:0) = 15.72%, palmitoleic (C16:1) = 4.07%, myristic (C14:0) = 3.29%, linoleic (C18:2) = 3.16%, arakidat (C20:0) = 0.79%, arakidonat (C20:4) = 0.40%, linolenic (C18:3) = 0.17%, eikosedienoic (C20:2) = 0.08%, EPA (C20:5) = 0,08%, klupanodonic (C22:5) = 0.07%, DHA (C22:6) = 0.07%, dan eikosatrienoic (C20:3) = 0.07%. The conclusion of the research showed that fatty acids profile of lamb on feedlot system with different protein and energy levels were similiar, except the higher of dokosaheksaenoat content on P2 (high protein, low energy). The highest content of palmitic was on lamb with 25 kg SW, oleic was on 20 and 25 kg SW, klupanodonic and dokosaheksanoic acids were on lamb with 15 and 25 kg SW. Keywords: Lamb, Protein-Energy Levels, Slaughter Weight, Lamb Meat, Fatty Acid

Energy Utilization of Complete Feed with Different Protein-Energy Levels in Male Local Lamb on Feedlot System

59 Energy Utilization of Complete Feed [E. Purbowati et al.] Not all of energy consumed by animal can be digested and utilized by body but some of them will be expelled through feces, urine, methane and heat increment. The objective of the research was to study the energy utilization of complete feed with different protein-energy levels in male local lamb on feedlot system. Twenty four males local lamb, aged around 3 – 5 months with the average body weight of 8,7 – 15,5 kg were used in this experiment. A generalized randomized (completely) block design was used in this study. The complete feed treatments were R1 (CP 14.48% and TDN 50.46%), R2 (CP 17.35% and TDN 52.61%), R3 (CP 15.09% and TDN 58.60%), and R4 (CP 17.42% and TDN 57.46%). The ANOVA was used to analyze data and any differences among groups were further tested using Duncan’s Multiple Range Tests (DMRT). The results showed that the Average Daily Gain (ADG) of lamb fed complete feed treatments were not significantly different (P>0.05) i.e. 145.22, 164.98, 154.92 dan 152.02 g, respectively for R1, R2, R3 and R4. Dry matter (DM) intake of lamb of R1 (937.08 g) and R2 (942.72 g) significantly higher (P<0,05) than these of R3 (796.54 g) and R4 (827.08 g), but digestible dry matter of R1 (48.85%) dan R2 (50.89%) significantlyഊlower (P<0,05) than these of R3 (60.49%) dan R4 (59.77%). The energy intake were not significantly different (P>0.05) among the treatments. Energy intake of R1, R2, R3 and T4 were 12,80, 12,30, 11,46 dan 10,74 MJ, respectively. Digestible energy (DE) and metabolizable energy (ME) (% energy intake) of R1 (52.26 and 45.25%) and R2 (53.52 and 45.03%) were lower (P<0,05) than those of R3 (63.46 and 52.64%) and R4 (64.11 and 58.45%). It was concluded that energy utilization of complete feed with crude protein (15.0 and 17.5%) and energy (50 and 60% TDN) combination in male local lamb on feedlot system were relatively the same. Keywords: energy Utilization, Complete Feed, Different Protein-Energy Levels, Feedlot, Local Lam

PEMANFAATAN PROTEIN PAKAN KOMPLIT DENGAN KADAR PROTEIN DAN ENERGI YANG BERBEDA PADA PENGGEMUKAN DOMBA LOKAL JANTAN SECARA FEEDLOT

Intisari Keseimbangan protein dapat menunjukkan apakah ternak dalam keadaan bertambah atau berkurang kadar protein di dalam tubuhnya. Penelitian ini bertujuan untuk mengetahui pemanfaatan protein pakan komplit berkadar protein dan energi yang berbeda dalam tubuh ternak domba. Domba lokal jantan sebanyak 24 ekor, umur 3-5 bulan dan bobot badan (88) awal 8,7-15,5 kg (CV := 15,01 %) dirancang dengan rancangan acak kelompok umum ke dalam 4 (empat) perlakuan pakan komplit, yaitu R1 == 14,48% protein kasar (PK) dan 50,46% total digestible nutrients (TON), R2 == 17,35% PK dan 52 ,61 % TON, R3 = 15,09% PK dan 58,60% TON dan R4 = 17,42% PK dan 57,46% TON. Pengelompokan domba berdasarkan BB awal. Data yang diperoleh dianalisis dengan analisis variansi dan apabila ada perbedaan dilanjutkan dengan uji Duncan. Hasil penelitian menunjukkan, bahwa jumlah protein tercerna berbeda nyata (P0,05). Jumlah protein teretensi dan retensi protein tidak berbeda nyata (P>0,05), yaitu antara 36,56-57,93 g dan 26,67-42,64%. Konversi protein tercerna pada R3 (0,78) lebih rendah (P0,05), yaitu 0,25-0,36. Kesimpulan hasil penelitian ini adalah pemanfaatan protein pakan komplit dengan kadar protein dan energi yang berbeda untuk penggemukan domba relatif sama. Kata Kunci: Keseimbangan Protein, Pakan Komplit, Protein-Energi Berbeda, Feedlot, Domba Lokal Jantan, PROTEIN UTILIZATION OF COMPLETE FEED WITH DIFFERENT PROTEIN AND ENERGY LEVELS TO MALE LOCAL SHEEP FATTENING ON FEEDLOT SYSTEM Abstract Protein balance showed that what the body protein content of animal was plus or minus. This research was conducted to know protein utilization of complete feed with different protein and energy levels to male local lamb on feedlot system. Twenty four males local lamb, aged around 3-5 months with body weight of 8.7-15.5 kg (CV = 15.01%) were set in a generalized randomized (complete) block design with 4 treatments: R1 (CP 14.48% and TON 50.46%), R2 (CP 17.35% and TON 52.61 %), R3 (CP 15.09% and TON 58.60%), and R4 (CP 17.42% and TON 57.46%). The ANOVA was used to analyze data and any differences among groups were further tested using Duncan Multiple Range Tests (DMRT). The result showed that the amount of digestible protein were significantly different (P<0.05), there are 75.05, 99.60, 67.79, and 84.07 g, respectively for R 1, R2, R3, dan R4, but digestible protein (55.36-61 .26%) was not Significantly different (P>0.05). The amount of retention protein was not significantly different (P>0.05), there are 36.56 -57.93 g or 26.67 -42.64%. Digestible protein conversion of R3 (0.78) was smaller (P0.05), that is 0.25 -0.36. It was concluded that the use of complete feed with different protein and energy levels to sheep on feedlot system were same relatively. Key Words: Protein Balance, Complete Feed, Different Protein-Energy, Feedlot, Male Local Shee