EVALUATION OF PERFORMANCE AND ESTIMATION OF (CO) VARIANCE COMPONENTS AND GENETIC PARAMETERS OF FLEECE WEIGHT AND BODY WEIGHT AT THE FIRST SHEARING WOOL OF LORI- BAKHTIARI LAMBS

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TALEBI M.A.; VATANKHAH M.; EDRIS M.A.

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Paper Information

Journal: Year:2004 | Volume:17 | Issue:3 (64 IN ANIMAL AND FISHERIES SCIENCES) Page(s): 64-69

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Title

EVALUATION OF PERFORMANCE AND ESTIMATION OF (CO) VARIANCE COMPONENTS AND GENETIC PARAMETERS OF FLEECE WEIGHT AND BODY WEIGHT AT THE FIRST SHEARING WOOL OF LORI- BAKHTIARI LAMBS

Author(s)

TALEBI M.A. | VATANKHAH M. | EDRIS M.A. | Issue Writer Certificate

Keywords

(CO) VARIANCE COMPONENTSQ3

GENETIC PARAMETERSQ3

FLEECE WEIGHTQ4

BODY WEIGHTQ3

LORI-BAKHTIARI LAMBQ4

Abstract

In this study, lamb FLEECE WEIGHT (LFW) and BODY WEIGHT at the first shearing wool (BWS) on 2709 of Lori- Bakhtiari lambs were used to evaluation of performance and estimate of (co) variance components and GENETIC PARAMETERS. (Co) Variance components and GENETIC PARAMETERS were estimated by Derivative Free Restricted Maximum Likelihood with univariate and bivariate animal model. Means and Standard deviation of LFW and BWS were 851.35±26gr and 37.03±7.84kg, respectively. Shearing wool year had a highly significant effect on the traits (p<0/001). The effect of age of dam on LFW and BWS traits were highly significant. FLEECE WEIGHT and BWS lambs born to 2-year-old ewe compared with lamb, s born to 3 to 6-year-old were significantly lighter. The male lambs were higher than the female lambs for LFW (148.82 gr) and BWS (7.78 kg). FLEECE WEIGHT and BWS of single lambs born were significantly higher than lambs born twin. Estimation of direct and maternal genetic components with multivariate analysis for LFW and BWS were 0.008, 0.002 and 3.02, 3.10 respectively. Estimation of direct and maternal heritability’s of LFW and BWS were 0.19±0.04 and 0.10±0.04, 0.05±0.02 and 0.11±0.02, respectively. Genetic and residual correlations between LFW and BWS were 0.11±0.02 and 0.57±0.02, respectively.

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APA: Copy

TALEBI, M.A., VATANKHAH, M., & EDRIS, M.A.. (2004). EVALUATION OF PERFORMANCE AND ESTIMATION OF (CO) VARIANCE COMPONENTS AND GENETIC PARAMETERS OF FLEECE WEIGHT AND BODY WEIGHT AT THE FIRST SHEARING WOOL OF LORI- BAKHTIARI LAMBS. PAJOUHESH-VA-SAZANDEGI, 17(3 (64 IN ANIMAL AND FISHERIES SCIENCES)), 64-69. SID. https://sid.ir/paper/383828/en

Vancouver: Copy

TALEBI M.A., VATANKHAH M., EDRIS M.A.. EVALUATION OF PERFORMANCE AND ESTIMATION OF (CO) VARIANCE COMPONENTS AND GENETIC PARAMETERS OF FLEECE WEIGHT AND BODY WEIGHT AT THE FIRST SHEARING WOOL OF LORI- BAKHTIARI LAMBS. PAJOUHESH-VA-SAZANDEGI[Internet]. 2004;17(3 (64 IN ANIMAL AND FISHERIES SCIENCES)):64-69. Available from: https://sid.ir/paper/383828/en

IEEE: Copy

M.A. TALEBI, M. VATANKHAH, and M.A. EDRIS, “EVALUATION OF PERFORMANCE AND ESTIMATION OF (CO) VARIANCE COMPONENTS AND GENETIC PARAMETERS OF FLEECE WEIGHT AND BODY WEIGHT AT THE FIRST SHEARING WOOL OF LORI- BAKHTIARI LAMBS,” PAJOUHESH-VA-SAZANDEGI, vol. 17, no. 3 (64 IN ANIMAL AND FISHERIES SCIENCES), pp. 64–69, 2004, [Online]. Available: https://sid.ir/paper/383828/en

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