Article Per Year (5 Year)
p-Index From 2020 - 2025
0
P-Index
This Author published in this journals
All Journal Journal of the Indonesian Tropical Animal Agriculture Livestock and Animal Research
S. Johari
Faculty of Animal and Agricultural Sciences, Diponegoro University, Tembalang Campus, Semarang 50275
Agriculture, Biological Sciences & Forestry Earth & Planetary Sciences Veterinary

Published : 5 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 5 Documents
Search

 1 
Ukuran Tubuh Entok di Tiga Kabupaten Provinsi Jawa Tengah Fatmarischa, N.; Sutopo, Sutopo; Johari, S.
Sains Peternakan: Jurnal Penelitian Ilmu Peternakan Vol 11, No 2 (2013): Sains Peternakan
Publisher : Universitas Sebelas Maret (UNS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/sainspet.v11i2.4858

Abstract

The study was conducted to identify the body measurements of Muscovy duck among threeregency (Pekalongan, Magelang dan Demak) in Central Java. Material of the experiment was 210 muscovy ducks at 7 months of age (70 birds/regency, 35 males and 35 females). Parameters observed were body weight, bill length, bill width, head length, head circumference, high head, neck length, neck circumference, wing length, body length, breast circumference, body height, breast length, femur length, tibia length, tibia circumference, maxilla length, and length of third toe. Data of body measurement were analyzed through univariate and multivariate using SAS.Whereas the Mahalanobis distance were analyzed using MEGA 5 (UPGMA) to construct the phylogeny tree. Result showed that there were some differences (P<0,05) between male and female of muscovy duck in each regency at all variables. Wing length and breast circumference were the distinguishing variable between regencys. Muscovy duck from Magelang had a closer genetic distance to Pekalongan than Demak.Keywords: body measurement, muscovy duck
GENETIC GAINS OF MILK YIELD AND MILK COMPOSITION AS REALIZED RESPONSE TO DAIRY COW SELECTION IN BBPTU-HPT BATURRADEN, INDONESIA Rahayu, A. P.; Johari, S.; Kurnianto, E.
Journal of the Indonesian Tropical Animal Agriculture Vol 40, No 2 (2015): June
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jitaa.40.2.79-86

Abstract

The aims of this study were to estimate the heritabilities, examine the effects of dairy femaleselection and calculate the genetic gains on milk yield and milk composition in Baturraden Dairy CattleBreeding and Forage Centre (Balai Besar Perbibitan Ternak Unggul dan Hijauan Pakan Ternak /BBPTU–HPT Baturraden), Indonesia. The first lactation records of 221 dairy cows from 2006 to 2014were used. Heritabilities were estimated by paternal half-sib correlation. Comparison of averageperformances between daughter population (Ā) and initial dam population before selection ( ) wereconducted by Z-test. Annual genetic gain was calculated as genetic gain per generation (the differencesbetween Ā dan ) divided by generation interval. Heritabilities for milk fat percentage (FP), milk fatyield (FY), milk protein percentage (PP) and milk protein yield (PY) were 0.46, 0.30, 0.28 and 0.17,respectively. A significant increase (P=0.025) in the total milk yield (TMY) from the first generation(G1) to the second generation (G2) resulted in a high significant decrease in the FP (P=0.004). Geneticgains of TMY, FP and PP were 9.76 kg, -0.04% and -0.01% per year, respectively. It is concluded thatselection for higher TMY only negatively affect FP and PP. Selection can be applied based on FY to avoid the decrease of FP. Negative effects of genetic-environmental interaction resulted in slowergenetic gain because the imported cows needed time to adapt to the local environment.
GENETIC VARIATION IN THREE BREEDS OF INDONESIAN LOCAL DUCKS BASED ON BLOOD AND EGG WHITE PROTEIN POLYMORPHISM Johari, S.; Ekasari, S.; Kurnianto, E.
Journal of the Indonesian Tropical Animal Agriculture Vol 38, No 1 (2013): (March)
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jitaa.38.1.20-26

Abstract

A study of genetic variation of four blood protein loci and three egg white loci in three breeds ofIndonesian local ducks (Magelang duck = MAD, Tegal duck = TED and Mojosari duck= MOD) wasinvestigated by using polyacrilamide gel electrophoresis (PAGE). The result showed that four bloodprotein loci (Pre-albumin, Albumin, Transferrin and Post-transferrin) and three egg white loci(Ovalbumin, Ovoglobulin and Conalbumin) were found to be polymorphic in three breeds of localducks. There was no difference on blood and egg white protein polyimorphism. The average value ofheterozygosity on three breeds of local ducks had a genetic potential to determine the controlled matingsystem and selection to obtain pure line. The closest phylogenetic relationship among the three breeds oflocal ducks occurred between MAD and TED.
MULTIVARIATE ANALYSIS OF THE MORPHOLOGICAL TRAITS OF FEMALE DUCK, MUSCOVY-DUCK AND MULE-DUCK Johari, S.; Kusumadani, N.D.; Kurnianto, E.
Journal of the Indonesian Tropical Animal Agriculture Vol 38, No 3 (2013): (September)
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jitaa.38.3.143-148

Abstract

The objective of this study was to evaluate the characteristics of morphometrical measurements inthe female waterfowls. The animals used in this research were 90 ducks , 90 muscovy-ducks and 90mule-ducks in Bulukumba district of Brebes regency, Central Java, Indonesia. Parameters measuredwere maxilla length, neck length, body length, chest circumstance, wing length, chest length, femurlength and tibia length. The data were analyzed using the Statistical Analysis System ver. 9.1. Muscovyduckgenerally had the largest of size, followed by mule-duck and then duck. The most discriminantvariables were showed by chest length and chest circumstance. Muscovy-duck and mule-duck hadclosest genetic distance (3.974870) than both of the distance between duck and mule duck (14.10), andmuscovy-duck and duck (24.73). The smallest errorness level in grouping was showed in duck 1%followed by 2% in mule-duck and 3% in muscovy-duck.
ACCURACY OF MILK YIELD ESTIMATION IN DAIRY CATTLE FROM MONTHLY RECORD BY REGRESSION METHOD Kuswahyuni, I.S.; Kurnianto, E.; Nuringtias, N.L.; Johari, S.
Journal of the Indonesian Tropical Animal Agriculture Vol 34, No 3 (2009): (September)
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jitaa.34.3.211-215

Abstract

This experiment was conducted to estimate the actual milk yield and to compare the estimation accuracyof cumulative monthly record to actual milk yield by regression method. Materials used in this experimentwere records relating to milk yield and pedigree. The obtained data were categorized into 2 groups i.e. AgeGroup I (AG I) that was cow calving at < 36 months old as many as 33 cows with 33 lactation records andAG II that cows calving e” 36 months old as many as 44 cows with 105 lactation records. The first three toseven months data were used to estimate actual milk yield. Results showed that mean of milk yield/ head/lactation at AG I (2479.5 ± 461.5 kg) was lower than that of AG II (2989,7 ± 526,8 kg). Estimated milk yieldsfor three to seven months at AG I were 2455.6±419.7; 2455.7±432.9; 2455.5±446.4; 2455.6±450.8; 2455,64± 450,8; 2455,5 ± 459,3 kg respectively, meanwhile at AG II was 2972.3±479.8; 2972.0±497.2; 2972.4±509.6;2972.5±523.6 and 2972.5±535.1 respectively. Correlation coefficients between estimated and actual milkyield at AG I were 0.79; 0.82; 0.86; 0.86 and 0.88, respectively, meanwhile at AG II were 0.65; 0.66; 0.67;0.69 and 0.72 respectively. In conclusion, the mean of estimated milk yield at AG I was lower than AG II.The best record to estimate actual milk yield both at AG I and AG II were the seven cumulative months.
Co-Authors A. P. Rahayu, A. P. E. Kurnianto I.S. Kuswahyuni LS, Kuswahyuni N. Fatmarischa N.D. Kusumadani N.L. Nuringtias S. Ekasari Sutopo Sutopo T.B. Purwanto, T.B.