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Table 6 Distribution of records for body weight traits in different inbreeding classes of animals grouped by the sex of lamb and born between 1994 and 2011

From: Population genetic structure analysis and effect of inbreeding on body weights at different ages in Iranian Mehraban sheep

lamb sex Inbreeding class   Traits (kg)         
BW   WW   6 MW   9 MW   YW  
   N Mean ± SE N Mean ± SE N Mean ± SE N Mean ± SE N Mean ± SE
  F= 0 730 3.96 ± 0.51a 373 22.48 ± 4.69a 152 35.30 ± 8.37a 19 40.64 ± 9.72b 12 50.20 ± 0.01a
Male 0< F<0.05 4264 3.77 ± 0.82a 2996 22.28 ± 4.16a 2265 36.81 ± 6.12a 1556 46.05 ± 6.43a 1042 53.16 ± 6.48a
  F ≥ 0.05 12 3.43 ± 1.05b 6 22.77 ± 2.30a 7 36.90 ± 5.67a 7 46.80 ± 3.14a 6 53.77 ± 3.66a
  F= 0 806 3.81 ± 0.46a 429 22.45 ± 4.63a 196 34.09 ± 7.26b 14 36.80 ± 0.83c - -
Female 0< F<0.05 4438 3.54 ± 0.76a 2917 21.95 ± 4.26a 2238 35.66 ± 5.69b 1539 44.97 ± 6.32b 956 52.17 ± 6.99b
  F ≥ 0.05 7 3.13 ± 0.76b 4 18.38 ± 2.68b 4 38.50 ± 1.00a 4 49.98 ± 0.82a 3 58.53 ± 0.47a
  1. a,b,cMeans with similar letters in each sub class within a column do not differ significantly at P<0.05. BW: birth weight, WW: 3-month weight, 6 MW: 6-month weight, 9 MW: 9-month weight, YW: yearling weight. F: inbreeding coefficient. SE: standard error.