Judul: The relationship between molting and egg production genetically on crossbred alabio and peking duck
Abstrak: Molting is a natural phenomenon on all adult female birds related to egg production, but the extent of its effects on egg production has not been known. An experiment was conducted to study the nature of the genetic relationship between molting and egg production, to study the effect of the prolactin hormone concentration on the molting and egg production, and to get an alternative way of controlling the molting in ducks. The research materials were crossbred Alabio and Peking ducks i.e AP ( Alabio ♂ x Peking ♀) and PA (Peking ♂ x Alabio ♀), 10 males and 90 females, respectively, with the total number of 200 birds. The variables measured were the pattern of molting, frequency, starting time of molting, duration of stops laying eggs, and the prolactin hormone concentrations that were associated with the production of eggs for 48 weeks. The results showed that the mechanism of molting always started with a stop laying, molting, and laying back. The molting occurence was used to divide the experimental ducks into two , namely (a) the ducks showing no molting during 48-weeks observation and (b) ducks showing molting during 48-weeks observation. The average egg production for 48 weeks in the non-molting ducks were significantly higher than that in the molting ducks (P <0.01). In the population of molting duck, selection can still be done, as there are molting individuals with high egg production. Therefore, the variables associated with molting in egg production should be sought. The molting frequency does not affect the egg production. The starting time of molting affect egg production, but its correlation with egg production was low, so it can not be used as selection criteria. The variables of stop laying affects egg production for 48 weeks and its correlation with egg production was high, so the variable of stop laying can be used as selection criteria of molting to increase egg production. The results of measurements of the concentration of prolactin hormone is consistent with the production of eggs. The concentration of the prolactin hormone in AP and PA ducks during the egg-laying period before and after the molting was very significantly higher than in the period of molting. In the period before molting, the prolactin hormone concentrations of AP ducks was higher than that of PA duck. The egg production of AP ducks before molting (0 -16 weeks) was higher than that of the PA ducks. The conclusion is that the alternative handling of the molting genetically is selection, and its criteria are whether presence or absence of molting. On the molting duck population, selection can be done based on the duration of stop laying i.e., less than 60 days as selection criterion.
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Judul: The Production Performance and The Hatching of Alabimaster-1 Agrinak Duck Eggs Resulting from Different Male and Female Ratios
Abstrak: Pada program breeding itik petelur, rasio jantan-betina yang tepat sangat penting untuk memastikan stok bibit itik unggul untuk program pemuliaan. Rasio jantan-betina dipelajari untuk memastikan stok bibit itik unggul. Penelitian ini bertujuan untuk mengetahui pengaruh rasio jantan dan betina terhadap hen day production (HDP), fertilitas, daya tetas, mortalitas dan kualitas anak itik (day old duck/DOD) Alabimaster-1 Agrinak. Penelitian ini dilaksanakan dari Desember 2023 hingga Maret 2024 di BPSI-UAT. Sebanyak 84 itik berumur 19 bulan dibagi menjadi 4 kelompok perlakuan rasio jantan dan betina : P1 (1:3), P2 (1:5), P3 (1:7), dan P4 (1:9) dan dipelihara dalam 12 pan kandang koloni dengan alas litter (3 ulangan per kelompok). Itik diberi pakan dengan kandungan protein kasar 18%. Sebanyak 1212 butir telur tetas itik Alabimaster-1 Agrinak ditetaskan menggunakan mesin tetas otomatis Multiplo dengan sistem multistage. Rasio jantan dan betina tidak berpengaruh pada fertilitas, mortalitas, daya tetas, dan kualitas DOD namun berpengaruh terhadap HDP, dengan rasio 1:9 menunjukkan perbedaan tertinggi., In the layer duck breeding program, the appropriate male-female ratio is crucial to ensure a superior breeding stock for breeding programs. The malefemale ratio is studied to ensure the availability of superior breeding ducklings. This research aims to know the effect of male-female ratios on hen day production (HDP), fertility, hatchability, mortality, and the quality of day-old ducklings (DOD) of Alabimaster-1 laying ducks at Agrinak. The study was conducted from December 2023 to March 2024 at BPSI-UAT. A total of 84 ducks aged 19 months were divided into 4 treatment groups of male-female ratios: P1 (1:3), P2 (1:5), P3 (1:7), and P4 (1:9), and were housed in 12 colony cages with litter bedding (3 repetitions per group). The ducks were fed a diet containing 18% crude protein. A total of 1212 eggs of Alabimaster-1 Agrinak laying ducks were incubated using the Multiplo automatic incubation machine with a multistage system. Male-female ratios did not affect fertility, mortality, hatchability, and DOD quality but affected HDP, with the 1:9 ratio showing the highest difference.
Keyword: Itik Alabimaster-1 Agrinak, Performa Penetasan, Produksi Telur, Rasio Jantan dan Betina, Alabimaster-1 Agrinak Duck, Egg Production, Hatching Performance, Male to female Ratio

Judul: Perencanan Lanskap Sunda Kalapa, Jakarta Utara Sebagai Kawasan W isata Sejarah
Abstrak: Perkembangan kota Jakarta dari waktu ke waktu sangatlah cepat, sehingga menyebabkan kota-kota tua banyak yang tergusur untuk dijadikan daerah baru yang lebih modern. Apabila hal tersebut tidak ditanggulangi secara dini maka keberadaan Kota Lama Jakarta akan hilang. Hal inilah yang melatar belakang untuk dilakukan tindakan perlindungan dan revitalisasi kawasan bersejarah Sunda Kalapa.
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