TY  - JOUR
T1  - Estimation of Genetic Trend for Body Weights at Post-Weaning in Zandi Sheep
AU - Mohammadi, K. AU - Beigi Nassiri, M.T. AU - Aghaei, A. AU - Mirzadeh, K. AU - Roshanfekr, H. 
JO  - Journal of Animal and Veterinary Advances
VL  - 10
IS  - 3
SP  - 272
EP  - 274
PY  - 2011
DA  - 2001/08/19
SN  - 1680-5593
DO  - javaa.2011.272.274
UR  - https://makhillpublications.co/view-article.php?doi=javaa.2011.272.274
KW  - Zandi sheep
KW  -Iran
KW  -genetic trend
KW  -body weight
KW  -Animal model
KW  -post weaning
AB  - Data from body weights at post-weaning were used to genetic trend for Zandi sheep reared in Khojir breeding station of Tehran-Iran over a 16 years period (1993-2008) using animal model for lambs, rams and ewes. Genetic trends were estimated for 6 Months Weight (6MW), 9 Months Weight (9MW) and Yearling Weight (YW) traits. For investigation of each trait appropriate models using 3-trait analysis were applied. Breeding values of animals were predicted by Best Linear Unbiased Prediction (BLUP) methodology under three-trait animal models. Genetic trends of studied traits were estimated by regressing mean of breeding values on birth year. The genetic trends were positive and significant for 6MW, 9MW and YW and were 21, 72 and 65 g year<SUP>-1</SUP>, respectively.
ER  -