Shrimp culture is carried out by ponds in open areas, especially near coastal areas. The ponds water condition or water quality has a significant impact on the shrimp culture. There are also frequent problems among these shrimp ponds, such as crop failure caused by bad water quality. The water quality monitoring in shrimp ponds is often done manually by the farmer in periodical times. The water quality monitoring that is done manually tends to be impractical, requires high worker wages, and has a high human error rate. With the advances in the field of Information Technology, data may be retrieved through sensors and collected into a server. Then the data may be processed and visualized in order to support precision aquaculture using the Internet of Things (IoT). Precision Fish Farming (PFF) or precision aquaculture is a concept that applies control-engineering principles to aquaculture industries. The PPF concepts allow farmers to have the ability to monitor, control, and document biological processes in aquaculture farms. This research aims were to design and build a multi node sensor and master board to monitor water quality in real time using the prototyping method. The system consists of several sensors for monitoring temperature, pH, and salinity in shrimp ponds that are installed at each node. Nodes are actively sending data to the master board. This model is done to reduce the need for direct data access to the internet. The monitoring system is tested in PB Tunas Baru shrimps pond in order to check if the system may work properly. The sensor is set to retrieve pond water quality data every 5 minutes in a total 100 minute period. The result shows that the model works properly, and the means value of the total error rate for the salinity sensors, pH, and temperature sensors consecutively is 1.65%, 1.25%, and 0%. This information allows the farmers to maintain the water quality precisely in aim to produce high quality shrimp crops toward the precision aquaculture concepts.

Penelitian ini bertujuan mengetahui respon berahi kuda lokal betina yang dipekerjakan menggunakan teknik induksi hormon prostaglandin F2 alfa (PGF2α) secara intramuskular. Sampel yang digunakan dalam penelitian ini adalah 20 ekor kuda betina dengan umur 5-10 tahun yang tidak dalam keadaan bunting atau pada saat fase luteal. Metode singkronisasi estrus dilakukan dengan menginduksi PGF2α (Prostaglandin) dengan dosis 10 mg i.m pada jam 08.00 pagi sebelum ternak kuda dipekerjakan. Pengamatan tingkah laku estrus dilakukan mulai dari satu hari setelah induksi PGF2α sampai munculnya tanda-tanda estrus. Pengamatan tingkah laku estrus dilakukan dengan sistem scoring menurut Colemandan Powell. Data hasil penelitian dianalisis secara deskriptif dan disajikan dalam bentuk rataan dan simpangan baku. Hasil pengamatan menunjukkan bahwa seluruh ternak kuda yang diinduksi dengan 10 mg i.m PGF2α memperlihatkan gejala estrus, namun tanda estrus sangat bervariasi yaitu scoring 1 sebanyak 1 ekor, scoring 2  sebanyak 3 ekor, scoring 3 sebanyak 8 ekor dan scoring 4  sebanyak 7 ekor dengan rata-rata 3.05 ± 0.88 scoring, dan persentase tertinggi pada scoring 3 yaitu 40% dan scoring 4 hanya 35%. Apabila dilihat dari hari mulai meresponya ternak kuda setelah diinduksi hormon PGF2α tergolong cepat yaitu pada 4.25 ± 1.01 hari.

The purpose of this study is to determine the quality of epididymis spermatozoa of buffalo after preservation with TALP media by adding serum with different level. The method used in this study is the experimental method and the design used is a randomized block design (RBD) with 3 treatment by adding bovine serum (0%, 5%, and 10%) and there are 6 replications as a group (repetition in the form of days). The result showed that the addition of serum into TALP diluent had a significant effect (P>0, 05) on the percentage of the motility of cauda epididymis spermatozoa of swamp buffalo after preservation which was 73, 33 in P2 10% serum and the viability is 79,167 ± 2,04 on P2 10%. This can be used as an indicator that the serum is effective in protecting spermatozoa from damages during the cryopreservation process, so by that, it would improve the quality of cauda epididymal spermatozoa of swamp buffalo. While the percentages of abnormality of cauda epididymis spermatozoa of swamp buffalo after preservation did not have a significant effect (P>0, 05). Based on the result of this study it can be concluded that the addition of 5% serum and 10% addition of egg yolk and 5% addition of glycerol will improve the quality of motility and viability and had no adverse effect on abnormalities after the preservation process at low temperature.

This study aims to determine the effect of fluid oviduct squeeze on spermatozoa cauda epididymis cattle peranakan simmental after equilibration at 5°C including live percentage, motility and abnormality. Cauda epididymis peranakan simmental cattle obtained from the Slaughterhouse of Solok City with ages ranging from 3-4 years collected using slicing method and evaluated microscopically. Semen was treated with fluid oviduct P1 (0%), P2 (10%) and P3 (20%) with 4 hours equilibration time. After completion, an evaluation of live percentage, motility and spermatozoa abnormalities was performed.

Tujuan dari penelitian ini adalah untuk mengamati kualitas spermatozoa epididimis kambing kacang  yang di preservasi pada suhu 5°C. Spermatozoa dikumpulkan dari bagian cauda epididimis dengan kombinasi metode slicing dan penekanan. Parameter yang diamati adalah persentase motilitas progresif sperma hidup dan abnormalitas. Hasil penelitian menunjukkan bahwa persentase motilitas progresif semen cauda epididimis setelah preservasi 0, 1, 2 dan 3 jam adalah  tidak pengaruh nyata (P>0,05). Selanjutnya persentase hidup berpengaruh sangat nyata (P<0,01) dengan nilai rataan perlakkuan tertinggi didapat pada lama simpan ke 0 jam yaitu 66,875±19,49%. Untuk persentase abnormalitas tidak memberikan pengaruh yang nyata (P>0,05). Dapat disimpulkan, bahwa pengaruh lama preservasi semen cauda epididimis yang berbeda pada suhu 5˚C tidak berpengaruh nyata (P>0,05) terhadap persentase motilitas dan persentase abnormalitas, dan berpengaruh sangat nyata (P<0,01) terhadap persentase hidup.