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Estimation of breeding value and genetic trend of Garut sheep and its crossbred Inounu, Ismeth; ., Subandriyo; Handiwirawan, E; Nafiu, L.O
Indonesian Journal of Animal and Veterinary Sciences Vol 12, No 3 (2007)
Publisher : Indonesian Animal Sciences Society

Crossing of Garut (GG) sheep with St. Croix sheep (HH) and Moulton Charollais (MM) resulting HG sheep (âHH X âGG) and MG sheep (âMM X âGG) was done by Indonesian Research Institute for Animal Production. The work continued by crossing MG and HG sheep to obtain HMG (âHG X âMG) and MHG (âMG X âHG) sheep. The study was continued by selection program based on phenotypic performance. Estimation of breeding value and genetic trends were done in order to study the effectiveness of selection program and to study the genetic progress of each breed. The breeding value was estimated by Best Linear Unbiased Prediction (BLUP) method using Variance Component Estimation (VCE4) software to calculate variance component and using Prediction and Estimation (PEST) to calculate Breeding Value. Genetic variations of composite sheep were generally higher than Garut sheep, represented by higher estimated heritability value. Genetic correlation of body weight at diffrent age is high, that makes selection at one age could also increase body weight at any level of age. In general of this population shows positive genetic trend, but fluctuated from year to year. Composite breed tend to have higher estimated breeding value than Garut sheep. Selection method that was practiced in this population showed in line with selection method using breeding value criteria. Key Words: Breeding Value, Genetic, BLUP, Garut Sheep, St. Croix, Moulton Charollais

Characterization of introduced breed of sheep and pattenl of conservation of Sumatera thin tail (STT) sheep in North Sumatera D, Priyanto; Siregar, A.R; Handiwirawan, E; ., Subandriyo
Indonesian Journal of Animal and Veterinary Sciences Vol 5, No 1 (2000)
Publisher : Indonesian Animal Sciences Society

Sumatera thin tail (STT) sheep are highly adapted to the local environment, no seasonal reproductive activity, and highresistance to internal parasite, but they have small body size and low mature body weight. "On Fann research" to identify morphological characteristics of intoduced breed and STT sheep, as well as an altemative conservation pattem were conducted in two location, i.e. Pulahan village, Air Batu District, Asahan Regency as the potensial area for STT sheep and Pulo Gambar village, Galang District, Deli Serdang Regency as the development area of introduced breed of sheep. The approach of Agroecosystem analysis, quantitative and qualitative characteristics of STT and introduced breed of sheep as well as interview to the farmer that raised STT in order to get recommendation of conservation pattern were aplied. The study show that STT sheep were isolated from the other area, and the populations tend to decrease from year to year. Qualitative characteristics of STT indicated smaller linear body measurements than those of introducted breed of sheep at the same age. Qualitative characteristics indicated that STT possess dominance body color of light brown and white (50.93% vs 41.28%). The STT mostly have one body color pattern (61.75%). The dominance spotted pattem were 1-10% of the body (60.29%), while the dominance of the head color was light brown (48.40%). Conservation pattern of STT are through natural process, in which the farmers are directly conserved, therefore the farmers do not have opportunity to develop their sheep farming. Therefore the conservation pattern recomnendation for STT sheep are by defending the location as "in situ conservation" or "on farm conservation" and giving "compensation program" to fanner because STT sheep farming less benefit than those of introduced breed of sheep. Â Key Word: Sumatera thin tail sheep, introduced breed of sheep, characterization, Conservation patter

Estimation of breeding value and genetic trend of Garut sheep and its crossbred Ismeth Inounu; Subandriyo .; E Handiwirawan; L.O Nafiu
Jurnal Ilmu Ternak dan Veteriner Vol 12, No 3 (2007): SEPTEMBER 2007
Publisher : Indonesian Center for Animal Research and Development (ICARD)

Crossing of Garut (GG) sheep with St. Croix sheep (HH) and Moulton Charollais (MM) resulting HG sheep (♂HH X ♀GG) and MG sheep (♂MM X ♀GG) was done by Indonesian Research Institute for Animal Production. The work continued by crossing MG and HG sheep to obtain HMG (♂HG X ♀MG) and MHG (♂MG X ♀HG) sheep. The study was continued by selection program based on phenotypic performance. Estimation of breeding value and genetic trends were done in order to study the effectiveness of selection program and to study the genetic progress of each breed. The breeding value was estimated by Best Linear Unbiased Prediction (BLUP) method using Variance Component Estimation (VCE4) software to calculate variance component and using Prediction and Estimation (PEST) to calculate Breeding Value. Genetic variations of composite sheep were generally higher than Garut sheep, represented by higher estimated heritability value. Genetic correlation of body weight at diffrent age is high, that makes selection at one age could also increase body weight at any level of age. In general of this population shows positive genetic trend, but fluctuated from year to year. Composite breed tend to have higher estimated breeding value than Garut sheep. Selection method that was practiced in this population showed in line with selection method using breeding value criteria. Key Words: Breeding Value, Genetic, BLUP, Garut Sheep, St. Croix, Moulton Charollais

Characterization of introduced breed of sheep and pattenl of conservation of Sumatera thin tail (STT) sheep in North Sumatera Priyanto D; A.R Siregar; E Handiwirawan; Subandriyo .
Jurnal Ilmu Ternak dan Veteriner Vol 5, No 1 (2000): MARCH 2000
Publisher : Indonesian Center for Animal Research and Development (ICARD)

Sumatera thin tail (STT) sheep are highly adapted to the local environment, no seasonal reproductive activity, and highresistance to internal parasite, but they have small body size and low mature body weight. "On Fann research" to identify morphological characteristics of intoduced breed and STT sheep, as well as an altemative conservation pattem were conducted in two location, i.e. Pulahan village, Air Batu District, Asahan Regency as the potensial area for STT sheep and Pulo Gambar village, Galang District, Deli Serdang Regency as the development area of introduced breed of sheep. The approach of Agroecosystem analysis, quantitative and qualitative characteristics of STT and introduced breed of sheep as well as interview to the farmer that raised STT in order to get recommendation of conservation pattern were aplied. The study show that STT sheep were isolated from the other area, and the populations tend to decrease from year to year. Qualitative characteristics of STT indicated smaller linear body measurements than those of introducted breed of sheep at the same age. Qualitative characteristics indicated that STT possess dominance body color of light brown and white (50.93% vs 41.28%). The STT mostly have one body color pattern (61.75%). The dominance spotted pattem were 1-10% of the body (60.29%), while the dominance of the head color was light brown (48.40%). Conservation pattern of STT are through natural process, in which the farmers are directly conserved, therefore the farmers do not have opportunity to develop their sheep farming. Therefore the conservation pattern recomnendation for STT sheep are by defending the location as "in situ conservation" or "on farm conservation" and giving "compensation program" to fanner because STT sheep farming less benefit than those of introduced breed of sheep. Key Word: Sumatera thin tail sheep, introduced breed of sheep, characterization, Conservation patter

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