Özet:
The purpose of this study was to define the fattening performance, slaughter and carcass characteristics of native
Turkish geese fattened under the intensive condition. It was also aimed to determine the most suitable initial age of
fattening and the effect of sex on the above mentioned traits. 32 native Turkish geese was allocated into two age treatment
groups named as group I (10 weeks age) and group II (14 weeks age). The experiment was completed at the end of 6
weeks. There was a significant difference between the groups in terms of weekly live weight in the weeks of 0, 1st, 2nd
and 3th (P<0.05-0.001). The highest live weight gain was observed in group 1 (2nd week, 45.6 g) while the lowest live
weight gain was in group 2 (5th week, 8.0 g). Influence of initial age of fattening was found significant on foot and wing
weight (P<0.01). Sex also has a significant effect on the carcass characteristics and male geese were heavier than females
in the hot and cold carcass, neck, leg, chest and back weight (P<0.05). Overall results of the study revealed that fattening
performance and feed efficiency ratio were better in younger geese but this trend was not observed in carcass. Therefore, it
could be suggested that younger native Turkish geese should be preferred instead of older ones for fattening.
Açıklama:
Bu çalTşma, yerli kazlarda besi başlangTç yaşT ve cinsiyetin besi performansT, kesim ve karkas özellikleri üzerine
etkisini belirlemek amacTyla yapTlmTştTr. ÇalTşmada iki gruptaki erkek ve dişi kaz sayTsT eşit olacak şekilde, grup I (10
haftalTk) ve grup II (14 haftalTk)’de toplam 32 kaz kullanTlmTştTr. ÇalTşma 6 hafta devam etmiştir. CanlT ağTrlTk bakTmTndan
gruplar arasTnda 0, 1, 2 ve 3. haftalarda istatistiki olarak önemli farklTlTklar bulunmuştur (P<0.05-0.001). En yüksek canlT
ağTrlTk kazancT grup I’de 2. haftada (45.6 g), en düşük canlT ağTrlTk kazancT ise grup II’de 5. haftada (8.0 g) görülmüştür.
Besi başlangTç yaşT, ayak ve kanat ağTrlTğTnT önemli şekilde etkilemiştir (P<0.01). STcak ve soğuk karkas ağTrlTğT, boyun,
but, göğüs ve sTrt ağTrlTğT değerleri erkek kazlarda dişi kazlardan daha yüksek belirlenmiştir (P<0.05). Sonuç olarak, 10
haftalTk yaşta besiye alTnan kazlarda besi performansT ve yemden yararlanma oranT bakTmTndan ilerlemeler elde edilmiş,
fakat kesim ve karkas özellikleri bakTmTndan 10 haftalTk yaşta besiye alTnan kazlarla 14 haftalTk yaşta besiye alTnan kazlar
arasTnda önemli bir farklTlTk görülmemiştir. Bu nedenle yetiştiricilerin kazlarT genç yaşta besiye almalarT tavsiye edilebilir.
