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All Journal Jurnal Ilmu Ternak Jurnal Ilmu-Ilmu Peternakan (Indonesian Journal of Animal Science) Jurnal Ilmu dan Teknologi Peternakan Tropis AGRISAINTIFIKA Jurnal Ilmu-ilmu Pertanian Caraka Tani: Journal of Sustainable Agriculture Berkala Penelitian Teknologi Kulit, Sepatu, dan Produk Kulit
Tristianto Nugroho
Universitas Gadjah Mada
Agriculture, Biological Sciences & Forestry Arts Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Social Sciences Veterinary Other

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Conventional and Mixed Model Approach to Estimate Heterosis of the Growth Traits in Boer Goat’s Crossbred Offspring Populations Widyas, Nuzul; Prastowo, Sigit; Nugroho, Tristianto; Ratriyanto, Adi
Caraka Tani: Journal of Sustainable Agriculture Vol 34, No 1 (2019): April
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (167.136 KB) | DOI: 10.20961/carakatani.v34i1.27620

Abstract

Heterosis is often utilized as a success indicator in a crossbreeding program. It is defined as the deviation of the crossbred means relative to their parental breeds. Heterosis mechanism is highly dependent on the genetic factors and thus, we incorporated genetic information in its estimation. The objective of this article was to compare heterosis estimated with conventional and mixed model approaches. In total, phenotypes of 3804 individuals were recorded. Data were obtained from a crossbreeding experiment involving Boer bucks and Jawarandu does. Observed traits were birth weight, weaning weight and average daily gain. Conventional and mixed model methods were used to estimate the heterosis. The heterosis values (%) between B×B vs B×J, estimated with conventional method were -11.38, -10.51 and -10.39; with mixed model were -6.23, -9.27 and -9.68 for BW, WW and ADG respectively. Heterosis values in B×(B×J) relative to B×B, estimated with conventional method were -6.16, -10.35 and -11.69; whereas with mixed model were -8.01, -10.82 and -9.14 for BW, WW and ADG respectively. Conventional method tends to underestimate the means phenotype with lower standard errors compared to mixed model analysis results in all traits. Conventional method also introduces biased heterosis estimates compared to the mixed model. Conventional method ignores any potential effects in the estimation procedures; whereas mixed model approach incorporates all the systematic and random effect including family relationship information. Thus, mixed model produced more reliable results in genetic parameters estimation. We recommend employing mixed model analysis in estimating heterosis.
Konfirmasi Dam Effect pada Sifat Berat Lahir Silangan Kambing Boer Tristianto Nugroho
AGRISAINTIFIKA: Jurnal Ilmu-Ilmu Pertanian Vol 2, No 2 (2018): Agrisaintifika
Publisher : Fakultas Pertanian Universitas Veteran Bangun Nusantara Sukoharjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32585/ags.v2i2.264

Abstract

Dam effect merupakan pengaruh induk yang terkait dengan kemampuan induk untuk mendukung kebuntingan, produksi susu, dan kemampuan merawat anak dari lahir sampai masa sapih. Peranan dam effect adalah mendukung pertumbuhan awal anak. Penelitian ini bertujuan untuk mengkonfirmasi adanya dam effect pada sifat berat lahir (BL) pada silangan kambing Boer. Materi yang digunakan berupa data recording BL dari 1001 ekor anak kambing di CV. Kambing Burja, Batu, Jawa Timur dari tahun 2012-2016. Untuk mengetahui adanya dam effect, analisis data dilakukan dengan membandingkan dua model Analysis of Variance (ANOVA) yang berbeda. Model pertama (Model 1) disebut dengan reduced model karena faktor dam tidak digunakan dalam perhitungan, sementara model kedua (Model 2) disebut complete model karena faktor dam digunakan sebagai random effect. Pejantan, komposisi darah induk, paritas induk, jenis kelamin anak, tipe kelahiran dan tahun pengamatan digunakan sebagai fixed effect untuk kedua model tersebut. Konfirmasi adanya dam effect dilakukan dengan membandingkan kedua model menggunakan F-test for overall significance. Hasil analisis menunjukkan bahwa BL tidak dipengaruhi (p>0,05) oleh faktor komposisi darah induk, akan tetapi secara nyata (p<0,05) dipengaruhi oleh pejantan, paritas induk, jenis kelamin, tipe kelahiran dan tahun pengamatan. Pada perbandingan Model 1 dan Model 2 untuk sifat BL diperoleh perbedaan yang nyata (P<0,05). Selanjutnya dapat disimpulkan dam effect memengaruhi sifat BL, sehingga faktor induk menjadi perlu dipertimbangkan dalam proses seleksi.
Kualitas Semen Segar Sapi Bali (Bos javanicus) pada Kelompok Umur yang Berbeda Sigit Prastowo; Pipin Dharmawan; Tristianto Nugroho; Aris Bachtiar; Lutojo -; Ahmad Pramono
Jurnal Ilmu Ternak Vol 18, No 1 (2018): June
Publisher : Fakultas Peternakan, Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (223.241 KB) | DOI: 10.24198/jit.v18i1.17684

Abstract

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
Telaah potensi hybrid vigor sifat bobot badan pada silangan kambing Boer dan Jawarandu Sigit Prastowo; Yayang Resty Nurhayat; Ignatia Fanny Indah Widowati; Tristianto Nugroho; Nuzul Widyas
Jurnal Ilmu-Ilmu Peternakan (Indonesian Journal of Animal Science) Vol 29, No 1 (2019): April
Publisher : Faculty of Animal Science, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jiip.2019.029.01.08

Abstract

Crossbreeding program was an option in order to improve Indonesian local goat productivity. In general, crossbreeding is aimed to utilize the benefit ofheterosis (hybrid vigor: HV); where better offspring performance compared to its parents phenotype is expected. Currently, crossbreeding between Boer bucks and  Jawarandu does is widely practised; resulting in a crossbred called Boerja. However, information regarding the HV effect were less available. Thus, this study aims to calculate HV in Boer × Jawarandu in relative to the mid-parental average, and relative to the dam phenotype. Mature body weight (BW) of 504 head of goat derived from Boer buck (n=6), Jawarandu doe (n=15), Boerja F1 (n=298), Boerja F2 (n=167), and Boerja F3 (n=18) were analyzed. Backcross system was applied to produce Boerja F2 (Boer ♂ × Boerja F1 ♀)  and Boerja F3 (Boer ♂ × Boerja F2 ♀). Result shows that BW in Boer, Jawarandu, Boerja F1, Boerja F2, and Boerja F3 were 79,00 ± 16,21; 29,07 ± 3,76; 41,84 ± 4,12; 41,69 ± 3,68 and 39,96 ± 4,97 kg respectively. The heterosis value of Boerja F1, Boerja F2, and Boerja F3 in relative to the parents average were -23, -31, and -34%, while in relative to the dam were 44, 0, and -4% respectively. According to HV value, it is concluded that the most optimum result of Boer × Jawarandu crossbreeding was found in Boerja F1. Higher Boer breed proportion in F2 and F3 were found to have lower BW.
Profile and Income of Bali Cattle Farmers under Different Farming Systems in Southeast Sulawesi, Indonesia Ahmat Endang Two Sulfiar; Citravia Agustin; Tristianto Nugroho
Jurnal Ilmu dan Teknologi Peternakan Tropis Vol 9, No 2 (2022): JITRO, May 2022
Publisher : Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33772/jitro.v9i2.24162

Abstract

The farmers in Southeast Sulawesi, Indonesia have started using the intensive farming system for Bali Cattle rearing in recent decades. This study aimed to determine the profile and income of Bali Cattle farmers under intensive, semi-intensive, and extensive farming systems in Southeast Sulawesi, Indonesia. The research was conducted using the Participatory Rural Appraisal (PRA) method. Profile and income data were collected from 105 farmers selected by purposive sampling. The analytical model used is one-way ANOVA with the farming system as a factor. The results showed that the age of intensive farmers was younger (p<0.05) and had a lower experience of raising livestock (p<0.05) than extensive and semi-intensive farmers. In addition, farmers in the intensive farming system have a higher goal of raising livestock as fertilizer producers (p<0.05) than extensive and semi-intensive. However, semi-intensive and extensive farming systems had a higher average number of cows, net body weight production yield, income, and value-added (p<0.05) than the intensive farming system. Based on the results, it can be concluded that semi-intensive and extensive farming systems generate high incomes and can be more economically sustainable than intensive systems.Keywords: participatory rural appraisal, animal production system, farming system
KELEMASAN DAN KEKUATAN TARIK KULIT KELINCI SAMAK BULU DENGAN KADAR PEMINYAKAN RENDAH, SEDANG DAN TINGGI Tutik Maryati; Tristianto Nugroho
Berkala Penelitian Teknologi Kulit, Sepatu, dan Produk Kulit Vol 20 No 2 (2021): Berkala Penelitian Teknologi Kulit, Sepatu, dan Produk Kulit
Publisher : Politeknik ATK Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (259.498 KB)

Abstract

Penelitian ini bertujuan untuk mengevaluasi kelemasan dan kekuatan tarik kulit kelinci samak bulu dengan kadar perminyakan rendah, sedang dan tinggi. Sebanyak 9 lembar kulit kelinci dibagi secara acak menjadi 3 perlakuan dengan 3 ulangan. Perlakuan yang diberikan adalah kadar peminyakan rendah (5%), sedang (15%) dan tinggi (25%). Variabel yang diamati meliputi kelemasan dan kekuatan tarik. Data yang dikumpulkan dianalisis dengan analisis variansi yang dilanjutkan dengan uji Duncan’s New Multiple Range Test. Hasil penelitian menunjukkan bahwa kelemasan kulit samak bulu dengan kadar peminyakan 15% dan 25% lebih tinggi (P<0,05) daripada kadar 5%. Kadar peminyakan 15% menghasilkan kekuatan tarik lebih tinggi dibandingkan kadar 5% dan 25%. Disimpulkan bahwa penggunaan kadar peminyakan 15% menghasilkan kelemasan dan kekuatan tarik kulit kelinci samak bulu yang terbaik.
Co-Authors Adi Ratriyanto Ahmad Pramono Ahmat Endang Two Sulfiar Aris Bachtiar Citravia Agustin Ignatia Fanny Indah Widowati Lutojo - Nuzul Widyas Pipin Dharmawan Sigit Prastowo Sigit Prastowo Sigit PRASTOWO Tutik Maryati Widyas, Nuzul Yayang Resty Nurhayat