The Relationship of Progesterone and Estradiol Concentrations During Pregnancy with Lamb Birth Weigh In Javanese Thin-Tail Ewes

Tujuan penelitian ini adalah untuk mempelajari hubungan antara konsentrasi progesteron dan estrogen selama kebuntingan dengan bobot lahir pada domba ekor tipis.  Tiga puluh sembilan domba bunting digunakan dalam penelitian ini. Domba percobaan disuntik PGF2α dua kali secara intra muskuler dengan interval sebelas hari.  Satu-dua hari setelah penyuntikan terakhir domba percobaan dikawinkan secara alami melalui perkawinan kelompok.  Sampel darah diambil setiap bulan (0 – 5 bulan) selama periode kebuntingan untuk menentukan konsentrasi progesterone dan estrogen.  Bobot lahir anak ditimbang sekitar 12 jam setelah kelahiran.  Hasil penelitian menunjukkan bahwa jumlah anak sekelahiran, konsentrasi progesterone dan estradiol serum induk pada bulan kedua kebuntingan secara positif berkorelasi dengan bobot lahir anak.  Disimpilkan bahwa semakin tinggi konsentrasi progesterone dan estradiol selama kebuntingan akan semakin tinggi total bobot lahir anak.  Disarankan bahwa peningkatan konsentrassi progesterone dan estradiol selama kebuntingan dapat memperbaiki pertumbuhan prenatal dan bobot lahir. (Animal Production 6(1): 49-55 (2004) Key Words: Progesteron, Estradiol,  Bobot Lahir, Kebuntingan, Domba

Calcium Alginate and Salt/Phosphate as Binding Agents in Restructured Lamb

A study on  restructurization of lamb meat using several binding agents were conducted. Objectives of the study were evaluate  effectivity of Ca–alginate, salt and phosphate as binding agent and their effect on physical properties of the restructured meat stored at -20⁰C for up to 12 weeks. Three binding agents were added to the restructured products, which include NaCl 0.3 %/ NTPP 0.3 %; alginate 0.5 %/Ca-lactate 0.5%; NaCl 0.3 % / NTPP 0.5 %/alginate 0.5% and no binding agent as a control. The products were evaluated at 0, 4, 8 and 12 weeks of storage. The result showed that treatment with alginate 0.5%/Ca-lactate 0.5% had the least purge loss value of 4.3±0.2%. The least cooking losses of 30.2±3.79% and the highest shear force 61.6±13.77 N. (Animal Production 3(1): 20-25 (2001)Key Words: Alginate/Ca-lactate, purge loss, cooking losses, shear  force.