ASBTRACTHousing temperature and housing system may influence productive performance and egg qualities. This research aimed to investigate the influence of different housing temperatures and housing system on productive performance and egg qualities. A total of 72 Lohmann hens were reared in litter and cage system with different housing temperatures of 18 o C and 30 o C. Each treatment consisted of 18 hens. Traits measured were productive performance (feed intake, hen day production, egg weight, egg mass, and feed conversion), egg internal and external qualities (egg shape index, Haugh Unit, air sack, albumin height, egg shell cleanless, egg shell thickness, and egg shell weight). This experiment was run twice according to housing system for each housing temperatures and was completely randomized design. Data was subjected to t-test and descriptive analyses. Productive production and egg quality in both housing systems did not differ. However, the egg weight was significantly heavier in cage system compared to litter system in neutral housing temperature.

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Low demand of duck meat is influenced by its quality. Generally, ducks slaughtered at 8 weeks have low carcass quality. Slaughter age is expected to influence carcass quality. Therefore, the study of carcass quality in different slaughter ages (8, 10, and 12 weeks) is needed. This research used 32 males and 18 females cihateup-alabio (CA) ducks. Ducks were grouped by hatching period. The experiment design was randomized block factorial (3x2). Treatments were slaughter age and sex. Traits measured were slaughter weight, percentage of carcass and its parts, physical and sensory quality of duck carcass. The result showed that interaction of slaughter age and sex affect slaughter weight. The higher slaughter age resulted higher breast and abdominal fat percentage, but had smaller thigh percentage. Sex had no effect on carcass percentage and its parts. Higher slaughter age and male sex showed better phisycal carcass quality. Differences in slaughter age and sex had no effect on panelist preference. This research concluded that higher slaughter age produces better carcass percentage and quality.

The crossbreeding between broiler and kampong chickens has been performed to develop a kampong-broiler strain chicken. The chicken stocking condition needs more attention as a part of animal welfare. This study was performed to identify the relationship between the stocking density and the stress based on Temperature Humidity Index (THI) and the effect of stocking density on meat quality, i.e., physical, microbiological, and organoleptic. Ninety DOCs of Kampong-Broiler (KB) were assigned into a completely randomized design with 3 treatments of stocking density i.e., 8, 10, and 12 birds/m 2 . Each treatment was replicated 3 times. The experimental chickens were housed in 9 blocks of housing each with 1 x 1 m 2 size. Data on physical and microbiology of meat qualities were analyzed with analysis of variance and continued with Duncan's multiple range test. The organoleptic data were analyzed by using Kruskal-Wallis test. The result showed that the stocking density did not significantly affect the physical and hedonic quality of KB chicken's breast. The stocking densities significantly affected (P<0.05) the microbiological variables of breast meat. The average value of THI during maintenance reached 28.98±1.25-29.33±1.32 o C. The higher the animal density the higher the THI value that correlated to the stress condition. However, high stocking density did not affect the physical and hedonic quality of breast meat, thus it can be accepted by the consumers. The higher the stocking density the higher the total plate count, Escherichia coli, and Staphylococcus aureus, without the presence of Salmonella sp. The meat quality of KB chickens raised in the stocking density of 10 birds/m 2 meets the requirement of SNI 01-3924-2009. ABSTRAK Upaya untuk mengembangkan ayam kampung dilakukan melalui persilangan dengan ayam broiler. Kondisi kandang yang nyaman merupakan bagian dari kesejahteraan hewan. Tujuan penelitian ini ialah mengidentifikasi cekaman akibat kepadatan kandang berdasarkan THI (TemperatureHumidity Index) dan mengidentifikasi pengaruh kepadatan kandang pada kualitas daging, yaitu fisik, mikrobiologi, dan organoleptik. Sebanyak 90 DOC KB (Kampung Broiler) digunakan dalam penelitian ini. Ayam KB ditempatkan pada 9 petak (ukuran 1x1 m 2 ) pada kandang semi closed house dengan 3 perlakuan. Setiap perlakuan dilakukan ulangan sebanyak 3 kali. Perlakuan kepadatan kandang yang berbeda yang digunakan ialah 8, 10, dan 12 ekor/m 2 . Peubah fisik dan mikrobiologis dianalisis menggunakan ANOVA dan dilanjutkan dengan uji jarak berganda Duncan. Data organoleptik diuji secara nonparametrik (Kruskal-Wallis). Hasil penelitian menunjukkan bahwa kepadatan kandang tidak berpengaruh nyata terhadap kualitas fisik dan mutu hedonik daging dada ayam KB. Kepadatan kandang berbeda memberikan pengaruh nyata (P<0.05) terhadap kualitas mikrobiologi daging dada. Rata-rata nilai THI selama pemeliharaan mencapai 28.98±1.25-29.33±1.32 o C. Kepadatan kandang yang tinggi meningkatkan nilai THI yang berkorelasi dengan meningkatnya cekaman tetapi tidak m...

Local ducks in Indonesia such as alabio duck and cihateup duck have advantages as egg producer and meat producer. Efforts is needed to increase the population of ducks by doing hatching. This research is to learn the hatchability of alabio duck and cihateup duck and identify of the factors that can be affected hatching duck eggs. Eggs ducks used 200 grains eggs ducks cihateup and eggs ducks alabio 300 grains. The process of hatching the egg ducks held for 28 days. The percentage fertility and hatchability results duck eggs alabio higher than cihateup duck eggs. Death embryonic the biggest occurred on the day to 26-28 days. Greater egg weights produce larger DOD. Weight of eggs and duck eggs index has no effect on hatchability but which affect hatchability of duck eggs in this study is high temperature during incubation, lower humidity during the period hatcher and egg hygiene. Alabio duck egg weight is lighter than duck eggs cihateup and more oval shaped while cihateup duck eggs more rounded shape. Weight egg and index egg on two types of eggs uniforms.

Walik chicken having curly body feathers (frizzle). Adult Walik chickens are quite resistant to weather changes. However, Walik chickens have a rather limited population, existing only in certain regions, and are, therefore, rare local chickens that need to be further explored (Sartika et al., 2016). In addition to local chickens, Kampung Unggul Balitbangtan (KUB) chickens, which are the result of six generations of selection using female

Abstract. Abinawanto, Sophian A, Lestari R, Bowolaksono A, Efendi PS, Afnan R. 2019. Analysis of IGF-1 gene in ayam ketawa (Gallus gallus domesticus) with dangdut and slow type vocal characteristics. Biodiversitas 20: 2004-2010. Insulin-like growth factor 1 (IGF-1) is defined as an essential gene for growth. Therefore, this research aims to identify the polymorphism of the IGF-1 gene from ayam ketawa with the dangdut and slow type vocal characteristics. Twenty male chickens were selected as an animal model. The sample consisted of 10 chickens with the dangdut type and 10 chickens with the slow type. The chickens were all obtained from five areas of the Pinrang district. The RFLP and HRM methods were selected to be used in this research. Results showed that the IGF-1 gene was 622 bp in length, while polymorphism analysis showed that the dangdut and slow type are homozygotic. The unrestricted DNA fragment indicated it after reaction of the restriction enzyme Pst1. Moreover, it confirmed that ayam ketawa with the dangdut or slow type had a similar sequence.

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