Judul: Gambaran Sel Darah Merah pada Anak Sapi Friesian Holstein yang diberi tambahan Mineral ZN
Abstrak: Zinc is an essential micro mineral required by ruminants which play important role in hematology profiles. The aim of this study was is to determine the effect of zinc (Zn) supplementation towards the profile of erythrocyte count, haemoglobin concentration, and haematocrit values on the Friesian Holstein calf. Nine Friesian Holstein calves between 6 – 10 months of age were used in this experiment. Calves were divided into three groups. Each group were consisted of three calves i.e with zero (control), 60 ppm and 120 ppm of Zn supplementation, respectively. Every month, blood has been collected right before and after giving Zn and continued for about three months. Blood sample were collected from jugular vein and analysed for the amount of erythrocytes, hemoglobin concentration, and the hematocrit value. Result shown that the amount of erythrocytes, hemoglobin concentration, and the hematocrit values show no differences between the groups. Supplementation of Zn 60 ppm or 120 ppm also did not show a appropriate difference towards the amount of erythrocytes, hemoglobin concentration, and the hematocrit value towards the Friesian Holstein calf (P>0,05).
Keyword: Bogor Agricultural University (IPB), zinc (Zn), hematocrit, hemoglobin, erythrocyte, Friesian Holstein calf

Judul: Leukocyte  profiles  of  friesian  holstein calves  received  feed  supplemented  by  zn
Abstrak: Zincatau Zn merupakan mineral mikro yang berperan penting dalam sistem kekebalan tubuh. Tujuan penelitian ini adalah mempelajari pengaruh suplementasi Zn dalam pakan terhadap profil leukosit pada anak sapi Friesian Holstein (FH). Penelitian ini menggunakan 9 ekor anak sapi FH yang sehat secara klinis, berumur antara 6-10 bulan. Anak sapi dibagi menjadi tiga kelompok perlakuan, masingmasing terdiri atas 3 ekor. Pengelompokan dilakukan berdasarkan perbedaan kandungan mineral Zn yang ditambahkan ke dalam konsentrat, yaitu kelompok yang diberi pakan tanpa suplementasi Zn (kontrol), kelompok yang diberi pakan dengan suplementasi Zn sebesar 60 ppm, dan kelompok yang diberi pakan dengan suplementasi Zn sebesar 120 ppm. Sampel darah diambil dari vena jugularis sebelum dan setelah suplementasi Zn, setiap bulan selama tiga bulan, untuk dianalisis terhadap jumlah total dan diferensial leukosit. Hasil penelitian menunjukkan bahwa suplementasi Zn sebesar 60 dan 120 ppm tidak menunjukkan perbedaan yang nyata pada jumlah leukosit total, neutrofil, monosit, dan eosinofil (P>0.05). Jumlah limfosit meningkat secara nyata setelah dua bulan suplementasi Zn sebesar 60 ppm (P<0.05). Kesimpulan, suplementasi Zn tidak berpengaruh pada jumlah leukosit total, neutrofil, monosit, dan eosinofil. Namun demikian, suplementasi Zn sebesar 60 ppm mampu meningkatkan jumlah limfosit anak sapi FH pada 2 bulan setelah suplementasi., Zinc or Zn is a micro mineral which plays an important role in the immune system. The objective of this experiment was to study the effect of zinc supplementation in Friesian Holstein (FH) calves on the number of total and differential leukocytes. Nine healthy Holstein calves, 6-10 months old, were used in this experiment. The calves were devided into three groups, consisted of three calves, i.e. with zero ppm (control), 60 ppm and 120 ppm of Zn supplementation, respectively. Blood samples were collected from jugular vein for total leukocyte count and differential leukocyte (neutrophyl, lymphocyte, monocyte, and eosinophyl counts) analysis, prior to and every month following treatment for three months. Results of this experiment showed that there were no significant difference on total leukocyte, neutrophyl, monocyte, and eosinophyl counts (P>0.05) following 60 and 120 ppm of Zn supplementation. Lymphocyte counts increased significantly two months following 60 ppm of Zn supplementation (P<0.05). In conclusion, Zn supplementation had no effect on total leukocyte, neutrophyl, monocyte, and eosinophyl counts. However, the supplementation 60 ppm of Zn may increase the lymphocyte count in calves two months after supplementation.
Keyword: Zn, anak sapi, leukosit total, diferensial leukosit

Judul: Formulasi Hamiltonian untuk Menggambarkan Gerak Gelombang Soliter Dimensi Tiga di Permukaan Laut
Abstrak: Gelombang permukaan adalah gelombang yang terjadi perbedaan rapat massa antara air dan udara. Salah satu gelombang permukaan yang ditinjau adalah gelombang soliter. Formulasi gelombang soliter dilakukan dengan menggunakan formulasi Hamiltonian.
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