Judul: Uji Kualitas Fisik Wafer Limbah Sayuran Segar dan Silase selama Penyimpanan.
Abstrak: Limbah sayuran berpotensi untuk diolah menjadi alternatif hijauan pakan. Teknologi olahan pakan yang cukup berkembang saat ini terhadap limbah sayuran adalah silase dan wafer. Tujuan penelitian ini adalah menguji kualitas fisik wafer limbah sayuran segar dan silase selama penyimpanan 12 minggu. Parameter yang diuji berupa kadar air, daya serap air, aktivitas air, dan kerapatan serta keberadaan serangga pada wafer. Wafer limbah sayuran segar memiliki kadar air dan aktivitas air yang lebih tinggi namun memiliki daya serap air dan kerapatan yang lebih rendah daripada wafer limbah sayuran silase. Faktor bahan penyusun wafer dan faktor priode penyimpanan menunjukkan perubahan yang nyata (p<0.05) terhadap semua parameter. Interaksi antar kedua faktor menunjukkan adanya perbedaan (p<0.05) terhadap kadar air, daya serap air, dan aktivitas air namun tidak berbeda (p>0.05) pada kerapatan. Tidak ditemukan adanya serangga pada wafer limbah sayuran segar dan silase selama penyimpanan. Berdasarkan perubahan kualitas fisik wafer selama penyimpanan 12 minggu, wafer limbah sayuran silase memiliki kualitas fisik yang lebih baik daripada wafer limbah sayuran segar.
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Judul: The Shelf Life of Complete Feed Wafers contains Corn Husks with Propionic Acid and Salt as Preservatives
Abstrak: Klobot jagung merupakan limbah pertanian yang dapat diolah menjadi wafer pakan komplit karena mengandung serat kasar yang tinggi. Wafer yang tidak langsung dikonsumsi ternak akan disimpan. Penyimpanan wafer juga perlu dilakukan untuk mempertahankan ketersediaan pakan terutama pada musim kemarau. Penelitian ini bertujuan mengevaluasi daya simpan dan kualitas wafer yang diberi asam propionat dan garam serta disimpan selama 6 minggu. Rancangan penelitian yang digunakan adalah Rancangan Acak Lengkap (RAL) faktorial (3 x 3) dengan 3 ulangan. Faktor L adalah lama penyimpanan dengan 3 taraf waktu (0, 3, 6) minggu. Faktor P adalah pengawet dengan 3 perlakuan (kontrol, asam propionat, garam). Parameter yang diuji meliputi organoleptik, kadar air, aktivitas air, serangan serangga, sebaran jamur, wafer durability index, dan biaya produksi. Terdapat interaksi antara lama penyimpanan dan penambahan pengawet pada parameter kadar air, aktivitas air, dan WDI (P<0,05). Lama waktu simpan wafer terbaik adalah 3 minggu dengan penambahan garam yang bernilai kadar air, aktivitas air, dan WDI berturut-turut (13,24 %; 0,636; 70,24 %)., Corn husks are agricultural waste that can be processed into complete feed wafers because they contain high amounts of crude fiber. Wafers that is not directly consumed by cattle will be stored. Wafers storage is also carried out to maintain feed availability, especially during the dry season. This study aimed to evaluate the shelf life and wafers quality added with propionic acid and salt and stored for 6 weeks. The research design used was a factorial Completely Randomized Design (CRD) (3 x 3) with 3 repetitions. The L factor was the storage time with 3 time levels (0, 3, 6) weeks. Factor P was a preservatives with 3 types (control, propionic acid, salt). Parameters tested include organoleptic, water content, water activity, insect attacks, mold distribution, wafer durability index (WDI), and production costs. There was an interaction between storage time and the addition of preservatives on the water content, water activity, and WDI (P<0,05). The best storage time for wafers was 3 weeks and the addition of salt with the values of water content, water activity, and WDI (13,24 %; 0,636; 70,24 %).
Keyword: asam propionat, garam, klobot jagung, penyimpanan, wafer pakan komplit

Judul: Distribution and Diversity of Ectoparasite Mites on Geckos in Indonesia
Abstrak: Data on the diversity and dispersal of parasitic mites on house geckos in Indonesia are very scarce. In this work, the distribution and diversity of mites living on three species of house geckos, namely Cosymbotus platyurus, Hemidactylus frenatus, and H. garnotii collected throughout Indonesia, has been elaborated. Geckos and mites were captured and immediately preserved in 70% ethanol. Whole mount of the mites was prepared by clearing in lactophenol followed by mounting on polyvinyl lactophenol solutions. The SEM preparation was conducted to examine the detail morphological characters of the mites. The results showed that among 448 individuals of geckos, 221 geckos were infected by Geckobia mites. Prevalences of C. platyurus, H. frenatus, and H. garnotii infested by mites were 14.8%, 50.69%, and 79.6%, respectively. Three different spesies of Geckobia (G1, G2, and G3) could be differentiated; and based on similarities of their morphological characters to ones described in published literatures, Geckobia G2 is Geckobia glebosum and Geckobia G3 is Geckobia bataviensis while G1 could not be identified to the species level. The highest mean intensity of Geckobia G1 infestation was found on H. garnotii (I=7.0), G. glebosum infestation on H. frenatus (I=3.5), and G. bataviensis infestation on H. garnotii (I=11.8). In general, C. platyurus was infested by the least number of mites. Geckobia G1 were found living on the skin folds on the claws, G. glebosum were found mainly on the body and thigh, and G. bataviensis were found on almost all parts of the host’s body. Geckobia mites are distributed randomly throughout Indonesian Archipelago, following the pattern of distribution of their hosts. So it is concluded that Geckobia G1, G. glebosum, and G. bataviensis are sympatric.
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