D Mauluddin
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Growth curve analysis of Garut sheep and its crossbreds Inounu, Ismeth; Mauluddin, D; Noor, R.R; ., Subandriyo
Indonesian Journal of Animal and Veterinary Sciences Vol 12, No 4 (2007)
Publisher : Indonesian Animal Sciences Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (176.486 KB) | DOI: 10.14334/jitv.v12i4.496

Abstract

Data of body weight of Garut sheep and its crossbreds of 488 head, consist of  149 head of Garut sheep, 115 head of St. Croix X Garut (HG), 68 head of Mouton Charollais X Garut (MG), 101 head of MG X HG (MHG) and 55 head of HG X MG (HMG) which is collected from Indonesian Research Institute for Animal Production at Bogor station were used in individual growth curve analysis. Three growth curve non linier model were used in this study i.e Logistik, Gompertz and Von Bertalanffy models. Comparisons were made among these models for goodness of fit, biological interpretability of parameters and computional ease and effect of genotype and environment in them. Least square means growth curve parameters which have biological interpretability were used to compare effect the genotype, interse mated procces and estimated heterosis effect. The result indicated that Von Bertalanffy was the best model in fitting the data from Garut and Crossbreds although the model needed more iteration than others in computations. All models have good biological interpretability especially for parameter mature size (A) and rate of maturity (k). Genotype, year of birth, sex and type of birth reared were important effects (p<0.01) in mature size (A) for all models except effect of type of birth rearing (P<0.05) in Logistic model. Year of birth had important effect (p<0.01) in rate of maturity (k) for all models. Genotype, year of birth, sex, parity and type of birth reared also had important effect (p<0.01) in parameter b/M; except b parameter in Von Bertalanffy was affected significantly by sex (P<0.05). Key Words: Growth Curve, Garut Sheep and Crossbreds, Relative Superiority
Growth characterisics of Garut sheep and its crossbred Inounu, Ismeth; Mauluddin, D; ., Subandriyo
Indonesian Journal of Animal and Veterinary Sciences Vol 13, No 1 (2008)
Publisher : Indonesian Animal Sciences Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (139.781 KB) | DOI: 10.14334/jitv.v13i1.590

Abstract

Based on previous study it is agreed that Von Bertalanffy model is the best fitted growth curve model with highest acuracy compared to Gompertz or Logistic models. For that reason in this study Von Bertalanffy model was used to study growth characterisics of Garut sheep and its crossbred. Relative superiority of crossbred sheep compared to Garut sheep in mature size parameter (A) based on Von Bertalanffy model were respectively: M. charolain X Garut = 19.26%; Hair sheep X Garut = 8.08% and MG X HG or HG  X MG = 4.22%. While relative superiority of crossbreds compared to Garut in rate of maturing (k) were respectively: MG = -4.91%; HG = -1.34% dan MHG/HMG = 6.05%. Based on its relative superiority mature size parameter (A) and rate of maturing (k) MHG sheep had prospect for more developed due to its performance in term of high mature body weight, faster in reaching standard of slaughter body weight (35 kg) at 440 days, and it is considere as more eficient in biological and economicaly. Key words: Growth Characteristics, Garut Sheep and Crossbreds, Relative Superiority
Growth curve analysis of Garut sheep and its crossbreds Ismeth Inounu; D Mauluddin; R.R Noor; Subandriyo .
Jurnal Ilmu Ternak dan Veteriner Vol 12, No 4 (2007): DECEMBER 2007
Publisher : Indonesian Center for Animal Research and Development (ICARD)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (176.486 KB) | DOI: 10.14334/jitv.v12i4.496

Abstract

Data of body weight of Garut sheep and its crossbreds of 488 head, consist of  149 head of Garut sheep, 115 head of St. Croix X Garut (HG), 68 head of Mouton Charollais X Garut (MG), 101 head of MG X HG (MHG) and 55 head of HG X MG (HMG) which is collected from Indonesian Research Institute for Animal Production at Bogor station were used in individual growth curve analysis. Three growth curve non linier model were used in this study i.e Logistik, Gompertz and Von Bertalanffy models. Comparisons were made among these models for goodness of fit, biological interpretability of parameters and computional ease and effect of genotype and environment in them. Least square means growth curve parameters which have biological interpretability were used to compare effect the genotype, interse mated procces and estimated heterosis effect. The result indicated that Von Bertalanffy was the best model in fitting the data from Garut and Crossbreds although the model needed more iteration than others in computations. All models have good biological interpretability especially for parameter mature size (A) and rate of maturity (k). Genotype, year of birth, sex and type of birth reared were important effects (p<0.01) in mature size (A) for all models except effect of type of birth rearing (P<0.05) in Logistic model. Year of birth had important effect (p<0.01) in rate of maturity (k) for all models. Genotype, year of birth, sex, parity and type of birth reared also had important effect (p<0.01) in parameter b/M; except b parameter in Von Bertalanffy was affected significantly by sex (P<0.05). Key Words: Growth Curve, Garut Sheep and Crossbreds, Relative Superiority
Growth characterisics of Garut sheep and its crossbred Ismeth Inounu; D Mauluddin; Subandriyo .
Jurnal Ilmu Ternak dan Veteriner Vol 13, No 1 (2008): MARCH 2008
Publisher : Indonesian Center for Animal Research and Development (ICARD)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (139.781 KB) | DOI: 10.14334/jitv.v13i1.590

Abstract

Based on previous study it is agreed that Von Bertalanffy model is the best fitted growth curve model with highest acuracy compared to Gompertz or Logistic models. For that reason in this study Von Bertalanffy model was used to study growth characterisics of Garut sheep and its crossbred. Relative superiority of crossbred sheep compared to Garut sheep in mature size parameter (A) based on Von Bertalanffy model were respectively: M. charolain X Garut = 19.26%; Hair sheep X Garut = 8.08% and MG X HG or HG  X MG = 4.22%. While relative superiority of crossbreds compared to Garut in rate of maturing (k) were respectively: MG = -4.91%; HG = -1.34% dan MHG/HMG = 6.05%. Based on its relative superiority mature size parameter (A) and rate of maturing (k) MHG sheep had prospect for more developed due to its performance in term of high mature body weight, faster in reaching standard of slaughter body weight (35 kg) at 440 days, and it is considere as more eficient in biological and economicaly. Key words: Growth Characteristics, Garut Sheep and Crossbreds, Relative Superiority