Sigit PRASTOWO
Jurusan Hama dan Penyakit Tumbuhan. Fakultas Pertanian Universitas Jember Jln. Kalimantan 37 Kampus Tegalboto Jember 68121

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Biologi Parasitoid Koinobiont Opius sp. (Hymenoptera: Braconidae) Pada larva Lalat Pengorok Daun Liriomyza huidobrensis (Diptera: Agromyzidae)

Jurnal Pengendalian Hayati Vol 1, No 1 (2008)
Publisher : Fakultas Pertanian Universitas Jember

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Abstract

Opius sp. is koinobiont endoparasitoid of L. huidobrensis larvae. Opius sp. has shortlife cycle, high fecundity and able to parasite at different larvae stages. The research objective was todetermine effect of larvae stages of LMF on parasitsm, fitness, development time and longevity ofOpius sp. The research was conducted at Laboratory of Biological Control and Glass house of Pestand Plant Diseases Departement, Agriculture Faculty, Jember University from from April until July2007. The insect were collected from Ngadisari, subdistrict of Sukapura, Probolinggo. The experimentwas done on two methods, choice and non choice test. Percentage of parasitization, the sting time,development time, longevity, sex ratio, body lenght, hind and hind tibia of adult female and male ofparasitoid Opius sp were examined. The result showed that the sting time of Opius sp. was influencedby larvae. The lates stages of LMF has the higher sting time compare early stages, 44,28 s on firstinstar, 54,9 s on second instar, and 80,68 third instar respectly. Parasitization of parasitoid Opius sp.was not influenced by larvae stage of L. huidobrensis. The percentage of parasitization on choice testwas 28,49% on first instar, 17,43% on second instar and 14,95% third instar. On the other hand, onnon chice test was 48,21% on first instar, 54,52% on second instar and 54,00% on third instar. Sexratio, adult fitness, body length, hind and hind tibia length, development time, longevity wereinfluenced by larvae stages.

STUDI BIOLOGI DAN PREFERENSI Carpophilus dimidiatus F. (Coleoptera: Nitidulidae) PADA BEBERAPA JENIS KACANG-KACANGAN

Berkala Ilmiah Pertanian Vol 1, No 4: MEI
Publisher : Berkala Ilmiah Pertanian

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Abstract

[ENGLISH] Carpophilus dimidiatus is an important pest that attack post harvest grains and dried fruit. The losses caused by C. dimidiatus attacks is quite high. C. dimidiatus has reported attacks on nut product. This study aims to know the biology of C. dimidiatus and the level of attacks on several nut. This research was conducted in Pest laboratory, Pest and Plant Disease Department of the Agricultural Faculty, Jember University from September 2012 until December 2012. The method used in this research was conduct biology test and preference test consisting of choosen test and non choosen test. The results showed C. dimidiatus life cycle needs 35-47 days or average 39,33 days wich consists of eggs 2-5 days, first instar 3-4 days, second instar 2-6 days, third instar 2-6 days, fourth instar 2-5 days, fifth instar 3-6 days, 7-18 days at sixth instar, pupa are 3-8 days. The egg colour are translucent white with a shape like a grain of rice, the larval body color are yellowish-white with golden brown head and tip of abdomen, the pupa are white with brown eyes. Fecundity C. dimidiatus are 162 eggs for 37 days, and about 5.4 eggs a day. Fertility of C. dimidiatus are 53.7%. Sex ratio of C. dimidiatus are 1:2. Three pairs of C. dimidiatus that made damages on 50 grams peanut local varieties can reach 54.90% during the eigth weeks of storage period. Keywords: Carpophilus dimidiatus; nuts; preferences [INDONESIAN] Carpophilus dimidiatus adalah hama penting yang menyerang biji-bijian dan buah kering pasca panen. Kehilangan hasil yang diakibatkan oleh serangan C. dimidiatus cukup tinggi. Serangan C. dimidiatus juga ditemukan pada produk kacangkacangan. Penelitian ini bertujuan untuk mengetahui biologi dari C. dimidiatus dan tingkat serangan pada beberapa jenis kacang. Penelitian ini dilakukan di Lab. Hama Jurusan Hama dan Penyakit Tumbuhan Fakultas Pertanian Universitas Jember mulai bulan September 2012 hingga Desember 2012. Metode yang dilakukan adalah melakukan Uji Biologi dan Uji Preferensi yang terdiri dari uji pilihan dan uji non pilihan. Hasil penelitian menunjukkan siklus hidup C. dimidiatus membutuhkan waktu 35-47 hari yaitu rata-rata 39,33, terdiri dari telur 2-5 hari, larva instar ke-I 3-4 hari, larva instar ke-II 2-6 hari, larva instar ke-III 2-6 hari, larva instar ke-IV 2-5 hari, larva instar ke-V 3-6 hari, larva instar ke-VI 7-18 hari, pupa 3-8 hari. Warna telur putih bening dengan bentuk seperti bulir beras, warna tubuh larva putih kekuningan dengan ujung kepala dan ujung abdomen berwarna coklat keemasan, warna pupa putih dan bagian mata berwarna coklat. Fekunditas C. dimidiatus untuk satu pasang imago dapat menghasilkan 162 telur selama 37 hari, dan perharinya sekitar 5,4 butir telur. Fertilitas sebesar 53.7%. Seks rasio imago jantan:betina adalah 1:2. Infestasi tiga pasang C. dimidiatus pada 50 gram kacang tanah varietas lokal mengakibat kerusakan 54.90 % selama masa simpan delapan minggu. Kata Kunci: Carpophilus dimidiatus; Kacang – kacangan; preferensi How to citate: Jihan, Suharto, S Prastowo. 2014. Studi biologi dan preferensi Carpophilus dimidiatus F. (Coleoptera: Nitidulidae) pada beberapa jenis kacang-kacangan. Berkala Ilmiah Pertanian 1(4): 73-76.

Performan Anak Babi Silangan Berdasarkan Paritas Induknya

Sains Peternakan: Jurnal Penelitian Ilmu Peternakan Vol 10, No 2 (2012): Sains Peternakan
Publisher : Universitas Sebelas Maret (UNS)

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The aim of this study was to determine the effect of performance of the parent parity of hybrid piglets, and to know the parity that produces good performance of the hybrid piglets. This research was conducted for four months in the company of CV. Adhi Farm in Kebakkramat, Karanganyar. The material were three boars (Landrace, Duroc and Hampshire), 21 Landrace sows, piglets from the marriage, and the data from the company. The design of experiments was nested design. The variables that were observed or estimated included birth weight, littersize, the correlation of littersize to the birth weight, and birth weight variation in birth. The data showed the influence, then followed by Least Significant Difference Test (Least Significant Difference) for parity nested in males and Duncans Multiple Range Test for parity. The results showed that parity and male parity nested exerted a highly significant (P <0.01) for birth weight and littersize. Between birth weight and littersize were compared from each parity and each male parity nested were significantly different (P<0.05). Balanced birth weight and hybrid piglets littersize were at parity 1. The correlation between weight birth and littersize were -0,17. The variation in birth weight per littersize was 0,02 to 0,16. The conclusion of this study is the influence of the parity sow has effect on birth weight of piglet’s performance of hybrids and littersize.Keywords: performance, piglets, sow parity

Evaluasi Produktivitas Domba Ekor Gemuk Berdasar Reproductive Rate

Caraka Tani: Journal of Sustainable Agriculture Vol 20, No 2 (2005): October
Publisher : Universitas Sebelas Maret

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Abstract

Fat Tailed Sheep represent one of Indonesian livestock that having excellence of comparability with other ruminants livestock. The excellence is quickly adult, short of pregnant age, and has the nature of bearing twin, so if evaluated from development aspect will be very beneficial. Reproductive Rate (RR) is a mount of reproduction ability from a group of ewes. Reproductive Rate defined as amount of weaned lamb by ewe every year. Variable/component related to RR are litter size, lamb mortalities before weaning and lambing interval.Litter size is general influenced by difference of breeds, age and sufficiency of nutrition. Litter size is peculiarly influenced by ovulation rate that determined by breed, age, nutrition and parity. Lamb age, litter size, birth weight, season, nutrition and parity are influenced lamb mortalities before weaning. Lambing interval determined by nutrition factor and management, which is matting pattern and lamb weaning.

RESPON BIRAHI KAMBING PERANAKAN ETAWA BETINA YANG MENDAPAT SUPLEMENTASI PAKAN UREA MOLASES MINERAL ANTI PARASIT BLOK DALAM PROGRAM SINKRONISASI ESTRUS MENGGUNAKAN HORMON PROSTAGLANDIN F2α

Caraka Tani: Journal of Sustainable Agriculture Vol 25, No 2 (2010): October
Publisher : Universitas Sebelas Maret

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Abstract

Penelitian ini bertujuan untuk mengetahui respon estrus kambing PE betina yang mendapat pakan suplemen UMMAT blok, dalam program Sinkronisasi Estrus. Penelitian dilaksanakan di Experimental Farm Jatikuwung, Jurusan Peternakan, Fakultas Pertanian, Universitas Sebelas Maret. Materi yang digunakan adalah 9 ekor kambing PE betina yang dibagi menjadi 3 kelompok perlakuan. Kelompok 1 adalah perlakuan pemeliharaan dengan pakan hijauan, kelompok 2 pakan hijauan dan UMMAT blok  dan kelompok 3 pakan hijauan dan konsentrat. Rancangan percobaan menggunakan Rancangan Acak Lengkap, analisa data menggunakan anova. Sinkronisasi Estrus dengan injeksi 0.5 ml hormon PGF2α secara intramuscular, interval 11 hari pengamatan waktu, lama dan tanda-tanda estrus pada setiap individu kambing seluruh kelompok perlakuan.Hasil penelitian diperoleh data estrus pada masing-masing kelompok yaiu, waktu estrus (jam) 30.67, 28.67, 27.66 dan lama estrus (jam) 33.67, 35.67, 35.66. Hasil uji anova menunjukkan beda nyata (P<0.05) pada waktu estrus antara kelompok 1 dengan kelompok 2 dan 3. Secara deskriptif terdapat tanda-tanda estrus yang teramati pada seluruh kelompok perlakuan yaitu vulva bengkak, mengeluarkan mucus dan ekor diangkat.Kesimpulan dari penelitian ini bahwa UMMAT blok mampu meningkatkan dan memperbaiki kinerja reproduksi kambing PE betina dalam proses Sinkronisasi Estrus.

Kualitas semen segar sapi Bali (Bos javanicus) pada kelompok umur yang berbeda

Jurnal Ilmu Ternak Vol 18, No 1 (2018)
Publisher : Fakultas Peternakan, Universitas Padjadjaran

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Penelitian ini bertujuan untuk mengetahui kualitas semen segar sapi Bali pada kelompok umur yang berbeda. Sampel yang digunakan berupa semen segar dari 8 pejantan sapi Bali di Balai Besar Inseminasi Buatan (BBIB) Singosari Malang, Jawa Timur, terbagi menjadi 2 kelompok umur yaitu 4 dan 7 tahun. Rata-rata bobot badan sapi pada kelompok umur 4 tahun adalah 656,75±32,69 Kg, dan  lingkar skrotum 27,5±1,64 cm sedangkan pada kelompok umur 7 tahun adalah 615,5±72,59 Kg dan 27,93±0,74 cm. Kualitas semen segar diamati dari 10 kali penampungan menggunakan vagina buatan. Parameter yang diamati meliputi volume (ml), pH, konsentrasi (x106/ml), motilitas (%), persentase spermatozoa hidup (L/D; %), abnormalitas primer (%) dan abnormalitas sekunder (%). Untuk mengetahui perbedaan antar 2 kelompok umur, data kualitas semen dibandingkan menggunakan t-test. Hasil penelitian menunjukkan bahwa pada kelompok umur 4 dan 7 tahun masing-masing diperoleh volume 4,55±0,91 ml dan 5,18±1,58 ml, pH 6,51±0,06 dan 6,52±0,01, konsentrasi 962,30±390,50×106/ml dan 1079,00±90,56×106/ml, L/D 71,88±2,58% dan 72,02±1,35%, motilitas 68±3,11% dan 66,04±6,30%, abnormalitas primer 1,054±0,20% dan 0,93±0,14% serta abnormalitas sekunder 3,54±0,48% dan 4,24±0,31%. Volume dan abnormalitas sekunder secara statistik menunjukkan adanya perbedaan yang nyata (P<0,05). Berdasarkan hasil penelitian dapat disimpulkan bahwa pada kelompok pejantan sapi Bali umur 7 tahun menghasilkan volume semen dan abnormalitas sekunder lebih tinggi dibandingkan umur 4 tahun.Kata kunci: sapi Bali, pengaruh umur, kualitas semen segar

Hubungan Ukuran-Ukuran Tubuh Terhadap Bobot Badan Sapi Simmental Peranakan Ongole Jantan Pada Berbagai Kelompok Umur di Rumah Pemotongan Hewan Sapi Jagalan Surakarta

Sains Peternakan: Jurnal Penelitian Ilmu Peternakan Vol 15, No 1 (2017): Sains Peternakan
Publisher : Universitas Sebelas Maret (UNS)

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Abstract

This study aim to know the relationship between body size, body weight and carcass weight of male Simmental Ongole crossbred at various age. The study was conducted in Jagalan abattoir in Surakarta for 2 months from December 2016 untill Januari 2016. Ninety heads of male Simmental Ongole crossbred were grouped into 3 groups (each 30 heads) that are Group 1 (1,5-2 years old), Group 2 (2-3 years old) and Group 3 (3-3,5 years old) according to dental anatomy observation at the incisivus replacement. Body length and chest circumference were respectively observed then correlated with body weight and carcass weight. Result shows a strong correlation between body weight and carcass weight by r value 0.931. The correlation between body length with body weight, chest circumference with body weight of Group1, Group 2 and Group 3 also shows in similiar pattern, with r value 0.647, 0.787, 0.666, and 0.661, 0.851, 0.661 respectively. A strong correlation also expressed between body length with carcass weight and chest circumference with carcass weight in each of groups as shown by r value 0.638, 0.740, 0.551 and 0.572, 0.803, 0.603 respectively. It is conculded that body size, body weight and carcass weight of male Simmental Ongole crossbreed have strong correlation among others.