Estimates of (co)variance components due to direct and maternal effects for body weights in Jamunapari goats
نویسندگان
چکیده
منابع مشابه
Evaluation of Saffron Ecotypes for Stigma Yield and Yield Components Using Different Maternal Corm Weights
Several saffron ecotypes (Mashhad, Torbat-Jam, Torbat-Haydarieh, Gonabad, Birjand, Ghaen) were evaluated in Urmia for stigma yield and yield components using different maternal corm weights(6, 8, 10, 12 g) in 2013 cropping year. The experiment was arranged as factorial based on randomized complete block design. Analysis of variance showed that there were significant differences among saffron ec...
متن کاملParameter estimates for direct and maternal genetic effects on yearling, eighteen-month, and slaughter weights of Korean native cattle.
Data collected by the National Livestock Research Institute of the Rural Development Administration of Korea were used to estimate genetic parameters for yearling (YWT, n = 5,848), 18-mo (W18, n = 4,585), and slaughter (SWT, n = 2,279) weights for Korean Native cattle. Nine animal models were used to obtain REML estimates of genetic parameters: DP-2 included genetic, uncorrelated dam, and resid...
متن کاملthe effects of collaborative strategic reading and direct instruction in persuasion on iranian second grade of high school students persuasive writing and attitudes
this study examined the effects of collaborative strategic reading and direct instruction in persuasion on iranian high school students persuasive writing and attitudes. students in three intact classes were assigned to one of three treatment conditions: collaborative strategic reading and direct instruction in persuasion or direct instruction in persuasion or a control group. treatment effects...
A Study on the Effects of Chilling Period on Sperm Quality of Sannan and Jamunapari Goats
The objective of the present study was to examine the effects of chilling period on semen quality of Sannan and Jamunapari. Semen of goat breeds were collected with artificial vagina and chilled at 5-9˚C. Volume, colour and pH were determined on fresh semen. After dilution, microscopic examination was performed for the progressive motility and sperm viability. Diluted semen of both breed was co...
متن کاملEstimates of Variances Due to Sire × Herd Effects for Weights of Hereford Cattle
Estimating variances due sire × herd effects requires a large number of sires to be represented in multiple herds, otherwise too much variation between animals is ‘picked up’ as variance due to sire × herd effects, and heritability estimates are biased downwards. Such bias can be avoided by using only records for progeny of multiple-herd use sires to estimate the additive genetic variance. Esti...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Animal
سال: 2008
ISSN: 1751-7311
DOI: 10.1017/s1751731107001218