Linear and Threshold Model Comparisons for Genotypic and Phenotypic Parameters Estimation on Reproductive Traits in Zandi Sheep
نویسندگان
چکیده
منابع مشابه
comparison of estimates of genetic and phenotypic parameters of some reproductive traits in moghani sheep using linear and threshold model
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متن کاملcomparison of estimates of genetic and phenotypic parameters of some reproductive traits in moghani sheep using linear and threshold models
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متن کاملGenetic parameters of reproductive traits in sheep
Reproductive traits from 7642 ewes were recorded from 1975 to 1983. The ewes were of five breeds (Dorset (D), Finnsheep (F), Rambouillet (R), Suffolk (S) and Targhee (T)) and two composite lines [C1 (1=2F þ 1=4R þ 1=4D) and C2 (1=2F þ 1=4S þ 1=4T)]. Genetic parameters were estimated for six basic and seven composite traits. The basic traits were conception rate (CR), total number of lamb born (...
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in this research, 6517 records, collected by khojir sheep breeding station (tehran, iran), during 1991 to 2011 were used to estimate genetic parameters of lamb survival in zandi sheep. genetic parameters were estimated using 16 different models of animal model, sire and threshold models using reml procedures. the aic criterion was used to evaluate the models. the effects in the most suitable an...
متن کاملEstimation of genetic parameters for productive and reproductive traits in Esfahan native chickens
The main aim of this research was to estimate the genetic and phenotypic parameters for productive and reproductive traits of Esfahan native chickens. Traits included body weights at hatch (BW1), 8 weeks of age (BW8), 12 weeks of age (BW12), and at sexual maturity (WSM)], age at sex maturity (ASM), egg number (EN), average egg weight (AEW) in the first 12 weeks of production, and egg production...
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ژورنال
عنوان ژورنال: Research on Animal Production
سال: 2016
ISSN: 2251-8622
DOI: 10.29252/rap.7.14.172