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Table 1 P values for the effects of age of the ewe, farmer, ram and straw type/thawing temperature. P values and chi-square (25-days NR- and lambing rates) for the effects of age of the ewe, farmer, ram and straw type/thawing temperature in 719 ewes, aged between six months and six-and-a-half years, inseminated vaginally with 200 × 106 frozen-thawed spermatozoa using different packages and thawing temperatures, collected from 7 mature rams.

From: Comparison of fertility results after vaginal insemination using different thawing procedures and packages for frozen ram semen

  

Chi-square

P

Source of variation

Degrees of freedom

NR

Lambing

NR

Lambing

Age of the ewes

2

10.7

13.2

0.007

0.220

Farmer

7

15.8

18.9

>0.0001

>0.0001

Ram

6

12.7

11.8

0.009

0.002

Straw type/thawing temperature

2

3.8

6.7

0.515

0.450

  1. NR = 25-days non-return