Growth Rate and Slaughter Value of Goslings Obtained after Geese Insemination with Fresh or Frozen-Thawed White Koluda® Gander Semen

Abstract

The aim of the study was to evaluate the growth rate and post mortem values of two groups of White Koluda® goslings. Each group consisted of 5 males and 5 females. The first group originated from geese inseminated with fresh semen, the second group of goslings obtained from geese of the same breed, inseminated with frozen-thawed semen. Semen was collected from 10 White Koluda® ganders. Part of semen was used once a week for fresh semen insemination, the remained ones was frozen and used after thawing for insemination twice a week. Body weight at the Day 1, 21, 35, 42, 56, 70, 84 and 105 (day of slaughter) and growth rates were examined. At post-mortem analysis there were evaluated (in g and % in relation to live body weight) : eviscerated carcass with neck, heart, liver, gizzard, edible giblets, breast muscles with skin, legs with skin, wings with skin and remainder of carcass with skin. Character of semen (fresh or frozen-thawed) do not affect the quality of progeny resulted from insemination. There were no significant differences in goslings obtained after fresh or frozen-thawed semen insemination with regard to the growth rate, final body weight (5140g- for fresh and 4941g- for frozen-thawed semen) and slaughter values (slaughter yeld : 69 vs. 72% ; edible giblets : 373.9 vs. 371.5g ; breast muscles : 762.0 vs. 682.3g).

Keywords

• freezing
• gander semen
• goslings
• growth rate
• slaughter yeld