Penelitian ini bertujuan untuk mengetahui produksi dan kualitas sorghum plumosum var. timorense dengan pemberian pupuk nitrogen dan umur tanaman. Rancangan yang digunakan adalah Rancangan Acak Lengkap (RAL) pola faktorial dengan 4 level pupuk nitrogen (faktor 1) dan 6 level umur tanaman (faktor 2) yang diulang 4 kali. Parameter yang diamati adalah laju pertumbuhan, jumlah anakan, produksi biomasa, kandungan nutrisi dan kecernaan in vitro. Data yang diperoleh dianalisis menggunakan analisis variansi dimana hasil penelitian menunjukkan bahwa pupuk nitrogen berpengaruh nyata (P<0,05) terhadap produksi bahan kering dan produksi serat kasar, namun berpengaruh sangat nyata (P<0,01) terhadap laju pertumbuhan, jumlah anakan, produksi bahan organik, produksi protein kasar, kecernaan bahan kering dan kecernaan bahan organik. Sedangkan faktor umur tanaman berpengaruh sangat nyata (P<0,01) terhadap semua parameter yang diamati. Interaksi kedua faktor tidak berpengaruh (P>0,05) terhadap jumlah anakan, produksi bahan kering, produksi bahan organik dan produksi serat kasar, namun berpengaruh (P<0,5) terhadap laju pertumbuhan, produksi protein kasar dan berpengaruh sangat nyata (P<0,01) terhadap kecernaan bahan kering dan kecernaan bahan organik.
An on-farm experiment was conducted in several villages in the district of Kupang, East Nusa Tenggara Province (NTT), Indonesia from June to October 2007. The experiment investigated the efficacy of a supplementation strategy to improve calf survival and performance during the dry season. A total of 258 Bali (Banteng, Bos javanicus) cow–calf pairs were used in the experiment. Calves from the 190 cow–calf pairs in the treatment groups were allocated grass hay + concentrate supplementation as follows: 1% (n = 98), 2% (n = 56) and 3% (n = 42) of calf bodyweight. There were 62 cow–calf pairs in the unsupplemented control group. The supplement consisted of grass hay and concentrate (rice bran, cornmeal, leucaena leaf and fish meal) containing 18% crude protein. The supplement was introduced to calves in the morning while confined to calf pens when the dams were grazing. Calves were reunited with the cows during the night. Parameters measured were calf mortality, calf and cow daily gain, and milk production. Supplementation tended to reduce calf mortality (P = 0.094) from 6.4% in control to 0% in calves receiving 2% and 3% supplement. Levels of supplementation significantly (P < 0.001) improved calf daily weight gain. Bodyweight changes and milk production of cows were unaffected by calf supplementation. It can be concluded that supplementation at 2% calf bodyweight reduces calf mortality and improves calf weight gain.
This study aims to determine the effect of compost fertilizer dosage and watering interval on the growth and production of Odot grass (P. purpereum cv Mott) in the semi arid region. The design used was Completely Randomized factorial design with 3 x 3 with 3 replications. The dosages of compost fertilizer (D) as factor A, were: D 0 (control); D 1 (5 tons / ha); and D 2 (10 tons / ha) and the watering intervals (I) as factor B, were: I 0 (control); I 1 (watering every 2 days as much as 4 liters / m2); and I 2 (watering every 4 days as much as 4 liters / m2). Parameters observed were plant height, number of tillers, production of fresh and dry matter. The results of this research indicated that interaction had a very significant effect (P˂0.01) on production of fresh and dry matter; had a significant effect (P˂0.05) on plant height; but there was no significant effect on number of tillers.
Penelitian ini bertujuan untuk mengkaji pengaruh penambahan zat aditif berupa tepung putak (sebagai sumber karbohidrat) dan isi rumen (sebagai sumber enzim) dalam pembuatan silase C. odorata terhadap kandungan total tanin dan kandungan nutrien silase C. odorata. Perlakuan yang digunakan terdiri atas 4 macam, yaitu: CO (C. odorata), COP (C. odorata + tepung putak 10%), COPR5 (C. odorata + tepung putak 10% + isi rumen 5%), dan COPR10 (C. odorata + tepung putak 10% + isi rumen 10%). Rancangan percobaan yang digunakan adalah Rancangan Acak Lengkap pola faktorial 4 x 2. Faktor pertama adalah perlakuan (CO, COP, COPR4, COPR10) dan faktor kedua adalah waktu fermentasi silase (0 hari dan 21 hari). Masing-masing perlakuan diulang sebanyak 4 kali. Peubah yang diukur adalah kandungan konsentrasi total tanin dan kandungan nutrien. Hasil penelitian menunjukkan penurunan total tanin 15,50% pada silase dengan penambahan aditif (tepung putak 10% dan isi rumen 10%). Kandungan nutrien (BO dan PK) meningkat masing-masing 3,45% dan 41,81% serta terjadi penurunan serat kasar 3% bila dibandingkan silase tanpa aditif. Waktu fermentasi silase C.odorata selama 21 hari menghasilkan kualitas silase terbaik dibanding waktu fermentasi 0 hari.
Some factors that contribute to variation in the responses of Bali cattle calves to dry season supplementation before weaning were examined on-farm in 10 villages located in three districts in East Nusa Tenggara Province, Indonesia from June to December 2008. The altitudes of the three districts were 0–100, 400 and 800 m above sea level. A total of 199 Bali (Banteng, Bos sondaicus) calves were offered a concentrate supplement from 1 month after birth (or June for calves born before May) at a level of 2% liveweight. The supplement consisted of grass hay and concentrate (rice bran, corn meal, leucaena leaf and fish meal) containing 18.6% crude protein. The supplement was offered to calves in the morning while confined to calf pens when the dams were released for grazing. Calves were reunited with the cows during the night. The effects of districts, herd size and month of birth on mortality rate, liveweight gain (LWG) and growth in supplemented calves were examined. Mortality rate averaged 1.0% and was not affected by month of birth, herd size or districts. The month of calving varied from March to September, but was mostly concentrated during June and July (55%). Month of birth did not significantly affect (P > 0.05) LWG of the calves, but the heart girth of calves born early (May) did increase at a slower rate (P < 0.05) than calves born late (August) (10 mm/day versus 27 mm/day). LWG of supplemented calves was faster (P < 0.05) in herds of 10 or less cow-calf pairs (220 g/day) than in herds of more than 10 cow-calf pairs (160 g/day). Altitude affected LWG (P < 0.05) of supplemented calves; gains were 170, 210 and 280 g/day for the three districts with altitudes of 1–100, 400 and 800 m, respectively. Implications of the factors affecting response to supplementation are discussed.
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