Judul: Pengaruh waktu terhadap perubahan berat jenis air susu pemerahan pagi dan sore
Abstrak: Penentuan berat jenis air susu merupakan salah satu cara untuk menguji kualitas air susu di lapang. Di dalam Codex 1914 dan SK Dirjen Peternakan No. 17/Kpts/DJP/ Deptan/1983 tentang Syarat-syarat Tata cara Pengawasan dan Pemeriksaan Susu Produksi Dalam Negeri. disebutkan bahwa berat jenis minimal air susu yang memenuhi syarat adalah 1.028. ...
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Judul: Pengaruh pengontrolan suhu tubuh melalui penyemprotan air terhadap produksi susu dan perubahan faali pada sapi perah laktasi
Abstrak: Penyemprotan air dilakukan pukul 10:00, 11:30 dan pukul 13:00, dengan lama penyemprotan masing-masing 3 -4 menit. Perlakuan adalah t-o (kontrol, tidak dilakukan penyemprotan), t-1 (penyemprotan air 1 kali pukul 13:00), t-2 (penyemprotan air 2 kali, pukul 11:30, dan 13:00), dan t-3 (penyernprotan air 3 kali, pukul 10:00; 11:30, dan 13:00). Setiap jam rnulai pukul 06:00 sarnpai pukul 18:00 dilaku­kan pengukuran suhu dan kelernbaban, hal ini dilakukan untuk rnenentukan indeks suhu-kelernbaban (ISK). Setelah ISK rnenca- pai 76 - 77 sapi rnulai merasa tidak nyarnan. Pengukuran suhu tubuh, frekuensi pernafasan dan frekuen­si denyut nadi dilakukan pada pukul 07:00, 10:00, 13:00 dan 16:00. Pengukuran produksi susu dilakukan setelah pernerahan pagi pukul 05:30 dan siang hari pukul 14:30. Kadar lernak dianalisis satu rninggu satu kali, dan pengukuran jurnlah konsurnsi ransurn dilakukan pagi hari. Pengarnbilan sarnpel darah dilakukan 3 kali yaitu pada rninggu ke 1, rninggu ke 4 dan rninggu ke 8 rnasing-rnasing pada pukul 15.30. Darah terse­but dianalisis untuk rnengetahui kadar tiroksin dan kortisol dengan rnetode RIA (radioirnrnunoassay). ...
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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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