Corn straw and cob are wastes from corn farming which are not utilized. These corn wastes have potential as an alternative feed for livestock, but have low nutritional quality. Therefore, these corn wastes are fermented to improve its nutritional quality. The purpose of this study was to analyze the effect of corn straw and cob fermentation on the fiber fraction content. This experiment used a completely randomized design with 6 treatments, namely control (elephant grass and grinting grass), corn straw, fermented corn straw, corn cob, and fermented corn cob. Each treatment was repeated 5 times. The variables measured were Neutral Detergent Fiber (NDF), Acid Detergent Fiber (ADF), hemicellulose, cellulose, and lignin. The results showed that the treatment had a very significant effect on the content of NDF, ADF, hemicellulose, cellulose, and lignin. Based on the results of this experiment, it can be concluded that corn cob fermentation can reduce lignin content thus corn cob lignin content can match elephant grass but on the contrary corn straw fermentation cannot be able to reduce lignin content.
Tujuan penelitian untuk mengetahui status fisiologis ternak dan dampaknya terhadap performa produksi sapi perah (Friesian Holstein) yang dipelihara di daerah lahan kering. Penelitian dilaksanakan pada KKP Suluh Obor, desa Mandeu, kecamatan Raimanuk, kabupaten Belu propinsi Nusa Tenggara Timur. Menggunakan metode observasional dan pengamatan lapangan. Sampel diambil secara purposive sampling dengan kriteria: induk laktasi/pernah laktasi, berumur 5-8 tahun sebanyak 3 ekor. Data diperoleh dari pengukuran terhadap status fisiologi ternak (pulsus, respirasi dan suhu rektal) sapi FH. Pengukuran dilakukan sebanyak 3 kali sehari pada jam 08.00 WITA; jam 12.00 WITA dan pada jam 16.00 WITA selama 30 hari sedangkan pengukuran produksi susu dilakukan dua kali per hari (pagi jam 05.00 WITA dan jam 16.00 WITA). Data yang diperoleh selanjutnya ditabulasi dan dianalisis deskriptif melalui pendekatan nilai rataan, koefisien keragaman dan standar deviasi. Untuk mengetahui hubungan antara lingkungan dengan status fisiologi ternak dilakukan uji korelasi, sedangkan pengujian tingkat produksi susu menggunakan uji T dengan software Minitab 17. Hasil penelitian menunjukkan bahwa kondisi lingkungan mikro pada lokasi pemeliharaan ternak sapi FH memiliki suhu lingkungan kandang berkisar antara 27,80-31,97°C dengan rata-rata 29,87°C; dan kelembaban udara berkisar antara 48,07-65,73% dengan rata-rata 55,73%. Untuk status fisiologis sapi perah FH yang dipelihara menampilkan kisaran nilai denyut nadi (pulsus): (61,27-65,02 kali/ menit), frekuensi respirasi: (25,54-30,64 kali/menit) dan suhu rektal: (37,49-38,00°C). Performa produksi susu sapi perah FH pada daerah lahan kering mampu menghasilkan rata-rata 7,07 ± 0,459 liter susu per hari.
Corrosion inhibition properties of eugenol derivatives have been elucidated by means of density functional theory at B3LYP/ 6-31G(d) level of theory. The quantum chemical parameters including the highest occupied molecular orbital (E HOMO) and lowest unoccupied molecular orbital (E LUMO), gap energy (∆E gab), ionization potential (I), electron affinity (A), the absolute electronegativity (χ), hardness (η), softness (σ), and the fraction of electron transferred (ΔN) are studied for investigating the corrosion inhibition performance of acetyleugenol derivatives. Effect of electron donating and withdrawing groups has been studied on the corrosion inhibition performance of acetyleugenol derivatives. The NH 2 (electron donating substituent) exhibits the highest inhibition efficiency, whereas the NO 2 (electron withdrawing substituent) exhibits the lowest inhibition efficiency. This study would have a significant contribution in designing highly potential eugenol based corrosion inhibitors.
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