Judul: Sensory test of meat of mandalung ea and ec at different slaughtering ages
Abstrak: Itik Alabio (Anas platyrhynchos borneo) dan itik Cihateup (Anas platyrhynchos javanica) merupakan itik lokal Indonesia. Itik Alabio berasal dari Kalimantan Selatan dan itik Cihateup berasal dari Jawa Barat, sedangkan entok (Cairina moschata) berasal dari Manila, Fillipina. Persilangan kedua jenis ini diberi nama itik Mandalung EA dan itik Mandalung EC. Pemotongan pada umur yang berbeda yaitu umur 8 minggu, 10 minggu, dan 12 minggu berdasarkan tingkat kesukaan daging dengan kulit bagian paha diduga mempengaruhi perbedaan aroma yang dihasilkan pada daging EA dan EC. Uji intesitas off-odor dilakukan dengan uji skalar garis dan uji tingkat kesukaan dilakukan dengan uji hedonik. Hasil penilaian panelis uji pada uji skalar garis dan uji hedonik dianalis ragam (ANOVA) metode GLM (Generalized Linear Model) dengan bantuan program Minitab 16 dan uji Tukey. Hasil penelitian menunjukkan umur pemotongan 8 minggu memberikan nilai intensitas off-odor daging dengan kulit paha sebesar 43.6%. Umur pemotongan 10 minggu memberikan nilai intensitas off-odor daging dengan kulit paha sebesar 50.94% dan pada umur pemotongan 12 minggu memberikan nilai intensitas off-odor daging dengan kulit paha sebesar 52%. Kesimpulan dari hasil penelitian ini adalah umur pemotongan 8 minggu memiliki nilai intensitas off-odor daging itik mandalung EA dan EC paling kecil. Secara hedonik, panelis lebih menyukai aroma daging dengan kulit itik mandalung bagian paha yang dipotong pada umur 8 minggu., Alabio ducks (Anas platyrhynchos borneo) and Cihateup ducks (Anas platyrhynchos javanica) belongs to Indonesian local ducks. Alabio ducks from Kalimantan and Cihateup ducks from West Java. Meanwhile, Muscovy ducks are originated from Manila, Philippines. Mandalung ducks are the crossbred between muschocvy duck and duck. EA and EC are symbolized for the crossbred of muscovy duck-cihateup duck and muscovy duck-cihateup, respectively. Slaughtering age of EA and EC may influence the different of thigh meat odor which affect the flavor preference of the panelist. Off-odor intensity was determined by scalar test line. Meanwhile, hedonic test was run to evaluate the preferences of the panelists to the flavor. The results of scalar test line and hedonic were subjected to analyses of variance and Tukey test. Slaughter age of 8, 10 and 12 weeks has the value off-odor intensity of thigh meat with skin by 43.6%, 50.94% and 52%, respectively. As conclusion, slaughtering age at 8 weeks has the smallest value of meat with skin off-odor of EA and EC and increased preference of the panelists to the flavor.
Keyword: bau amis, itik Mandalung EA, itik Mandalung EC, off-odor, umur pemotongan

Judul: Penurunan off-odor daging itik Cihateup jantan umur 10 minggu dengan pemberian daun beluntas, vitamin C dan E dalam pakan
Abstrak: Duck is one of a waterfowl which is potential as egg and meat producer. Duck meat has fishy odor (off-odor) and limited the consumers preference. The main objective of this research was to investigate the effect of antioxidants to reduce off-odor of duck meat. This research was conducted at the Faculty of Animal Science, Bogor Agricultural University. The cihateup male duck meat of age 10 weeks were evaluated in this experiment. The duck were raised from 1 weeks up to 10 weeks. The treatments were commercial diet as control (K); commercial feed + beluntas leaf meal 0.5% (KB); commercial feed + beluntas leaf meal 0.5% + vitamins C 250 mg/kg (KBC); commercial feed + beluntas leaf meal 0.5% + vitamins E 400 IU (KBE). The parameters observed were decreasing off-odor of cihateup s meat duck (breast, thigh) and level of consumer preference of cihateup s meat duck. The data were analyzed using ANOVA (Analysis of Variance), and significant diferrences was analyzded using Range Multiple Duncan Test. The results showed that feeding beluntas leaf meal 0.5% (KB) decreased thigh meat off-odor 12.6% and breast meat 7.1%. The results showed that feeding beluntas leaf meal 0.5% + vitamins C 250 mg/kg (KBC) decreased thigh meat off-odor 2.6% and breast meat 0.2%. The results showed that feeding beluntas leaf meal 0.5% + vitamins E 400 IU (KBE) decreased thigh meat off-odor 16.2% and breast meat 12%. The conclusion of this research was that feeding beluntas leaf meal 0.5% + vitamins E 400 IU resulted the lowest intensity of duck meat (breast, thigh) off-odor. Through sensory test this meat was must prefered by panelists.
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Judul: Cycle Hamilton pada Graf Lengkap, Graf Regular, dan Graf 2-Connected 4-Regular Berorder Kurang dari Sepuluh
Abstrak: Suatu graf disebut graf Hamilton apabila graf tersebut memuat cycle Hamilton, yaitu cycle yang melewati setiap vertex tepat satu kali. Menentukan keberadaan cycle Hamilton pada suatu graf dapat menggunakan syarat cukup yang berupa teorema-teorema yang telah diperkenalkan sejak tahun 1950-an. Beberapa syarat cukup yang dibahas dalam karya ilmiah ini adalah syarat cukup yang berhubungan dengan graf lengkap dan graf regular. Suatu graf lengkap berorder 𝑛������ ≥ 3 dan graf r-regular berorder 𝑛������ ≤ 2𝑟������ + 1 merupakan graf Hamilton, Karena kedua graf tersebut memuat cycle Hamilton. Selanjutnya, syarat cukup tersebut digunakan untuk menentukan keberadaan cycle Hamilton pada graf 2-connected 4- regular berorder kurang dari 10.
Keyword: graf Hamilton, graf regular, graf lengkap, graf 2-connected 4-regular