Judul: Diversity and Prevalence of Chewing Lice (Phthiraptera: Mallophaga) in a Poultry Farm in Laladon, Bogor.
Abstrak: Poultry lice are notorious ectoparasites that pose significant challenges to the health and productivity of poultry, thereby affecting their economic value. This study aimed to investigate the diversity, prevalence, and degree of infestation of chewing lice in five different bird species: domestic chicken (Gallus gallus domesticus), turkey (Meleagris gallapavo), fantail pigeon (Columba livia domestica), swan geese (Anser cygnoides), and Muscovy duck (Cairina moschata). Specimens were collected from various body regions and identified using established identification keys. The results revealed the presence of Menacanthus and Menopon genera in chickens and turkeys, exclusive presence of Lipeurus in chickens, Anaticola in Muscovy ducks and swan geese, Colpocephalum in fantail pigeons and swan geese, Columbicola and Campanulotes exclusively in fantail pigeons, and Holomenopon exclusively in swan geese. The prevalence of lice infestation was determined, with all bird species exhibiting a 100% prevalence, except for Muscovy ducks, which showed a prevalence of 40%. The study highlighted the challenges in identifying poultry lice at the species level due to the unavailability of identification keys, leading to incomplete identification results. Moreover, farmers need to be aware of the detrimental effects of chronic lice infestations on poultry health and productivity, Kutu unggas merupakan ektoparasit yang menyebabkan gangguan terhadap kesehatan dan produktivitas unggas, sehingga mempengaruhi nilai ekonomi komoditi unggas. Penelitian ini bertujuan untuk mengetahui keragaman spesies, prevalensi, dan tingkat infestasi kutu pada lima spesies burung yang berbeda, yaitu ayam ras (Gallus gallus domesticus), kalkun (Meleagris gallapavo), merpati kipas (Columba livia domestica), angsa (Anser cygnoides), dan entog (Cairina moschata). Sampel kutu diambil dari berbagai bagian tubuh unggas dan diidentifikasi menggunakan kunci identifikasi morfologi. Hasil identifikasi menunjukkan keberadaan genus Menacanthus dan Menopon pada ayam dan kalkun, dan keberadaan eksklusif Lipeurus pada ayam. Kutu Anaticola pada entog dan angsa, Colpocephalum pada merpati kipas dan angsa, Columbicola dan Campanulotes secara eksklusif pada merpati kipas, serta Holomenopon secara eksklusif pada angsa. Infestasi kutu pada semua jenis unggas menunjukkan prevalensi 100%, kecuali pada entog dengan prevalensi 40%. Ketidaktersediaan kunci identifikasi kutu unggas sampai tingkat spesies, menjadikan hasil identifikasi tidak lengkap. Hasil penelitian menunkjukkan bahwa peternak harus berwaspada tentang dampak infestasi kutu yang kronis dan merugikan
Keyword: chewing lice, poultry, prevalence, species diversity

Judul: Ragam Jenis Kutu pada Ayam Bukan Ras di Pasar Tradisional Kota Bogor
Abstrak: Domestic chickens has high economic value because it can be used as a chicken layer and broiler. Lice was one of the ectoparasites that can attack domestic chickens. This study was conducted to determine the diversity and distribution of lice on domestic chickens so that it can be controlled properly. Lices were obtained from 42 domestic chickens at several markets in the area of Bogor, such as Gunung Batu market, Anyar market, Bogor market and Warung Jambu market. Lices were collected from several regions of chicken’s body, such as head to neck, back, breast to feet, wings, and tail. Lice samples were put into the container which has already contained 70% alcohol and identified. The results showed that the prevalence of lice infestation at traditional market was 50%. Lice species discovered were Menopon gallinae (77.14%), Lipeurus caponis (20.57%), and Goniodes dissimilis (2.29%). This study was dominated by Menopon gallinae with the largest distribution in the breast to feet region (97.39%).
Keyword: Menopon gallinae., Lipeurus caponis, Goniodes dissimilis, domestic chickens, Bogor Agricultural University (IPB)

Judul: Pembuatan Film Tipis Cu2ZnSnS4 sebagai Lapisan Penyerap Cahaya pada Sel Surya Menggunakan Metode Elektrodeposisi
Abstrak: Thin film of Cu2ZnSnS4 (CZTS) is an alternative semiconductor used as light absorber layer on solar cell. CZTS can replace silicon that commonly used as commercial semiconductor. The advantage of using CZTS as absorber layer is due to the abundance of its chemical composer on earth, and its high value of absorption coefficient. The absorber layer was made by using electrodeposition method on ITO glass substrates. The films were deposited at room temperature using potentiostatic mode with a potential of –1.05 V for 30, 45, and 60 minutes. After that, the films were annealed at two different temperatures, 180 ºC and 500 °C, for 45 minutes in N2/H2S atmosphere. Based on X-ray diffraction analysis, the polycrystalline thin film obtained fall into kesterite crystal phase. This type of crystal was obtained when the CZTS was annealed at 500 °C in H2S/N2 atmosphere. The value of optical band gap energy for the CZTS thin film was 2.2 eV with the film thickness about 1.228–6.366 μm. The sample of CZTS with electrodeposition time of 45 minutes and annealing temperature of 500 °C showed the best result and in conformity with absorber layers criteria for solar cells.
Keyword: semiconductor, ITO glass, CZTS thin film, electrodeposition