Livestock Studies 1996, Vol 36, Num, 1     (Pages: 032-042)

Breeding Characteristics of Holstein Cows Raiset at Ankara Atatürk Forestry Farm

Okan ATAY 1 ,S. Metin YENER 2 ,Galip BAKIR 3 ,ALİ KAYGISIZ 4

1 Arş. Gör., 100. Yıl Üniv. Fen Bilimleri Enst. Zootekni Anabilim Dalı, Van/TÜRKİYE
2 Prof. Dr., Ankara Üniv. Ziraat Fak. Zootekni Bölümü, Ankara/TÜRKİYE
3 Arş. Gör., 100. Yıl Üniv. Ziraat Fak. Zootekni Bölümü Van/TÜRKİYE
4 Yrd. Doç. Dr. Kahramanmaraş Sütçü İmam Üniv. Ziraat Fak. Zootekni Bölümü, Kahramanmaraş/TÜRKİYE
Viewed : 770 - Downloaded : 531 Breeding characteristics of Holstein cows raised at Ankara Atatürk Forestry Farm were studied.

The means for the breeding characteristics were estimated as follows: number of service per pregnancy 1.80 ± 0.06 the mean age of cows on culling 61.66 ± 1.29 months. Lifetime number of calves 3.00 ± 0.16. livability of calves up to the 6 months of age 83.65 %, calving rate 94.26 %, stillbirth rate 3.24 %, abortion rate 2.47 %, age at first calving 29.68 month, calving interval 432 ± 54 days. Yearly replacement in herd 30.71 %. The reason iost of cows rate as follows: 27.21 % disease, breeding sale 22.79 % and reformation 50.00 % respectively. Keywords : Holstein, livability, calving rate, abortion rate, number of service per pregnancy, age at first calving, calving interval