Judul: Supplementation of Antioxidants in Polyunsaturated Fatty Acids (PUF A) Status of Local Ewes.
Abstrak: This research was designed to evaluate the effect of antioxidants in high polyunsaturated fatty acids (PUFA) diets to improve reproductive status of ewes. The experiment used completely randomized design with three treatments and five replicates. The treatments based on ration with and without antioxidant (CON). Different types of antioxidants, natural antioxidant form black tea waste extract (BTWE) and commercial vitamin E synthetic (VES). This research was divided into two phases: namely prenatal (pregnancy) and postnatal (after birth until weaning). Variables observed were dry matter intake (DMI) of ewes, average daily gain (ADG) of ewes and lambs, reproductive performance, blood metabolites of ewes, physiological status of ewes, malondialdehyde, and milk quality. Data were tested using Analysis of Variance (ANOVA) and the different among treatment means were examined using Duncan Multiple Range Test. Physiological status of ewes were not affected by antioxidant treatments. DMI in prenatal and postnatal were not affected by treatments. ADG of ewes in prenatal were not affected by treatments, whereas in postnatal, both antioxidant treatments (BTWE and VES) had higher ADG on ewes and lambs compared with CON (P<0.05). During pregnant, all treatments had the same number of embryos, whereas in postnatal, litter size in BTWE was higher than CON and lower than VES. The results indicate that percentage loss of embryos in CON was the highest and VES was the lowest. High litter size at VES had caused lower average birth weight (P<0.05) and higher mortality at birth than the other treatments. After weaning, mortality of BTWE was lower than CON and higher than VES. All treatments produced male dominant of lambs, but CON was the most and VES was the least. Both antioxidant treatments resulted in glucose and cholesterol levels higher than CON during the prenatal and postnatal (P<0.05). In prenatal, both antioxidant treatments were not able to reduce level of oxidation in the body of ewes (as: malondialdehyde parameter), whereas in postnatal, both antioxidant treatments were lower compared to CON (P<0.05), so that ewes with antioxidant treatments had lower level stress than control. Both antioxidant treatments had better milk quality than CON (P<0.05). In conclusion, black tea waste extract could be used as antioxidant to replace vitamin E synthetic in high PUFA rations to improve reproductive status of local ewes.
Keyword: antioxidant, black tea, ewe, sunflower oil, reproduction, vitamin E

Judul: The Addition of Antioxidants to The Ratiom Contains PUFA Against Nulliparous Hematology and Blood Metabolites in The Folliculogenesis Phase
Abstrak: Penelitian bertujuan untuk mengevaluasi gambaran darah calon induk kambing betina pada fase folikulogenesis dengan pemberian ransum mengandung PUFA dan penambahan antioksidan. Penelitian menggunakan 10 ekor kambing Boerja betina yang dibagi menjadi 2 perlakuan dan 5 kelompok. Perlakuan terdiri dari A0= ransum mengandung PUFA tanpa antioksidan dan A1= ransum mengandung PUFA dengan penambahan antioksidan 200 ppm asal ekstrak daun nangka. Peubah yang diamati pada penelitian yaitu konsumsi bahan kering, protein kasar, lemak kasar, karbohidrat, TDN, hematologi, dan metabolit darah. Data yang diperoleh dianalisis menggunakan software SPSS dengan t-test independent. Simpulan dari penelitian adalah kombinasi pemberian ransum mengandung PUFA dengan penambahan 200 ppm antioksidan asal ekstrak daun nangka menunjukkan hematologi dan metabolit darah yang lebih baik yang dapat dilihat dari meningkatnya kadar PCV, eosinofil, basofil, dan kadar trigliserida dibandingkan kambing Boerja betina yang tidak diberi penambahan antioksidan pada fase folikulogenesis., This study aimed to evaluate the blood picture of nulliparous in the folliculogenesis phase by giving rations containing PUFA and the addition of antioxidant. This study used 10 nulliparous Boerja divided into 2 treatments and 5 replicates. The treatment consisted of A0= ration containing PUFA without antioxidants and A1= ration containing PUFA with the addition of 200 ppm antioxidant from jackfruit leaves extract. The variables observed included dry matter intake, crude protein, crude fat, carbohydrate, TDN, hematology, and blood metabolites. The data obtained were analyzed using SPSS software with an independent t-test. The conclusion of this study is that the combination of PUFA containing rations with the addition of 200 ppm antioxidant from jackfruit leaves extract showed better hematology and blood metabolites which can be seen from increased levels of PCV, eosinophils, basophils, and triglyceride levels compared nulliparous Boerja that were not given the addition of antioxidants in the folliculogenesis phase.
Keyword: antioxidant, blood metabolite, hematology, PUFA, reproduction

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. ,,,
Keyword: graf Hamilton, graf regular, graf lengkap, graf 2-connected 4-regular.