Effects of Selection for Four Week Body Weight on Reproductive  Performance in Japanese Quail

Levent TÜRKMUT; Özge ALTAN; İsmail OĞUZ; Servet YALÇIN

Makale detayları

Effects of Selection for Four Week Body Weight on Reproductive Performance in Japanese Quail

Yazarlar:

Levent TÜRKMUT | Özge ALTAN | İsmail OĞUZ | Servet YALÇIN

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Veterinary and Animal Sciences 1999 Vol.23 Issue 3, pp.229-234

Belge Tipi:

Makale

Yayın Tarihi:

2/1999

Belge Dili:

Türkçe

Document ID (Org No.):

2000771959

Sıklık:

İki Aylık

eISSN:

1303-6181

pISSN:

1300-0128

Anahtar kelimeler:

Özet:

 

This research was carried out to determine the genetic effects of divergent selection under two different selection  pressures for four week body weight over three generations on reproductive characteristics and some egg characteristics in Japanese  quail. Birds were weighed individually. Individual selection for body weight was carried out at four weeks, separately for each sex. The proportion kept was 10% for males and 30% for females in 10Y and 10D lines, and 20% for males and 60% females in 20Y and  20D lines. 10Y and 20Y lines were selected for high body weight, 10D and 20D lines were selected for low body weight.  Age at sexual maturity was not affected by lines and generations. Average age at sexual maturity was 46 days. Early death rates  were decreased by selection. But mid term and late deaths were not affected by selection. Average early, mediavel and late embryonic mortalities were %7.99, %13.47 and %15.93 in Y lines and %7.25, %10.36 and %20.49 in D lines. There were not differences in fertility and hatchability among lines. Fertility was increased by selection. Hatchability did not change. Fertility, hatchability of fertile eggs and hatchability of all eggs over generations were %79.82, %54.46 and %43.39 respectively.  All egg characteristics except shell weight per unit surface area were changed by selection. Egg weight, shape index, albumen index  was affected by lines. Egg weight, albumen index and yolk index during the selection increased from 10.24 g to 11.45 g, from  11.56 to 14.03 and from 45.37 to 48.86 respectively. Yolk percentage and form index decreased from 33.83 to 32.22 and from  82.23 to 79.74 respectively. Average Haugh unit and shell weight per unit surface area over the generations were 95.21 and 40.39  mg/cm 2 respectively.

 

This research was carried out to determine the genetic effects of divergent selection under two different selection  pressures for four week body weight over three generations on reproductive characteristics and some egg characteristics in Japanese  quail. Birds were weighed individually. Individual selection for body weight was carried out at four weeks, separately for each sex. The proportion kept was 10% for males and 30% for females in 10Y and 10D lines, and 20% for males and 60% females in 20Y and  20D lines. 10Y and 20Y lines were selected for high body weight, 10D and 20D lines were selected for low body weight.  Age at sexual maturity was not affected by lines and generations. Average age at sexual maturity was 46 days. Early death rates  were decreased by selection. But mid term and late deaths were not affected by selection. Average early, mediavel and late embryonic mortalities were %7.99, %13.47 and %15.93 in Y lines and %7.25, %10.36 and %20.49 in D lines. There were not differences in fertility and hatchability among lines. Fertility was increased by selection. Hatchability did not change. Fertility, hatchability of fertile eggs and hatchability of all eggs over generations were %79.82, %54.46 and %43.39 respectively.  All egg characteristics except shell weight per unit surface area were changed by selection. Egg weight, shape index, albumen index  was affected by lines. Egg weight, albumen index and yolk index during the selection increased from 10.24 g to 11.45 g, from  11.56 to 14.03 and from 45.37 to 48.86 respectively. Yolk percentage and form index decreased from 33.83 to 32.22 and from  82.23 to 79.74 respectively. Average Haugh unit and shell weight per unit surface area over the generations were 95.21 and 40.39  mg/cm 2 respectively.

Makale detayları

Effects of Selection for Four Week Body Weight on Reproductive Performance in Japanese Quail

Yazarlar:

Levent TÜRKMUT | Özge ALTAN | İsmail OĞUZ | Servet YALÇIN

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Veterinary and Animal Sciences 1999 Vol.23 Issue 3, pp.229-234

Belge Tipi:

Makale

Yayın Tarihi:

2/1999

Belge Dili:

Türkçe

Document ID (Org No.):

2000771959

Sıklık:

İki Aylık

eISSN:

1303-6181

pISSN:

1300-0128

Japanese Quail

Selection for Body Weight

Reproductive Characters

Egg Characters.

Sayı

Makale detayları

Effects of Selection for Four Week Body Weight on Reproductive Performance in Japanese Quail

Yazarlar: Levent TÜRKMUT | Özge ALTAN | İsmail OĞUZ | Servet YALÇIN

Yayıncı: TUBITAK

Dergi: Turkish Journal of Veterinary and Animal Sciences 1999 Vol.23 Issue 3, pp.229-234

Belge Tipi: Makale

Yayın Tarihi: 2/1999

Belge Dili: Türkçe

Document ID (Org No.): 2000771959

Sıklık: İki Aylık

eISSN: 1303-6181

pISSN: 1300-0128

Japanese Quail

Selection for Body Weight

Reproductive Characters

Egg Characters.

Sayı

Yazarlar:

Levent TÜRKMUT | Özge ALTAN | İsmail OĞUZ | Servet YALÇIN

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Veterinary and Animal Sciences 1999 Vol.23 Issue 3, pp.229-234

Belge Tipi:

Makale

Yayın Tarihi:

2/1999

Belge Dili:

Türkçe

Document ID (Org No.):

2000771959

Sıklık:

İki Aylık

eISSN:

1303-6181

pISSN:

1300-0128