Reproductive Characteristics of Holstein Cattle Reared in a Private Dairy Cattle Enterprise in Aydın

The aim of this study was to investigate the reproductive performance and the factors influencing reproductive performance of Holstein cattle reared in a private dairy cattle enterprise. Over 10 years, 480 records on reproduction were analysed with the least squares technique. Mean days open, services per conception, gestation period and calving interval were 114.5 ± 1.7 days, 2.01 ± 0.04, 278.7 ± 0.3 days and 394.9 ± 1.9 days, respectively. The effect of the lactation number on the gestation period was statistically significant (P < 0.001), whereas calving year and calving season had no significant effect on reproductive performance.

Anahtar Kelimeler:

Holstein cattle, days open, services per conception, calving interval

Reproductive Characteristics of Holstein Cattle Reared in a Private Dairy Cattle Enterprise in Aydın

Keywords:

Holstein cattle, days open, services per conception, calving interval,

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Harvey, W.R.: User’s guide for LSMLMW PC-1 version mixed model least-squares and maximum likelihood computer program, Univ. Columbus, Mimeo.
Düzgünefl, O., Kesici, T., Gürbüz, F.: İstatistik Metotları I. Ankara Üniv. Ziraat Fakültesi yayınları. 1983; 153-165.
Hwa, K., Hyun, G. Suh.: Effect of the amount of body condition loss from the dry to near calving periods on the subsequent body condition change, occurrence of postpartum diseases, metabolic parameters and reproductive performance in Holstein dairy cows. Theriogenology, 2003; 60: 1445-1456.
Klaas, I.C., Wessels, U., Rothfuss, H., Tenhagen, A., Heuwieser, W., Schallenberger, E.: Factors affecting reproductive performance in German Holstein–Friesian cows with a special focus on postpartum mastitis. Livest. Prod. Sci., 2004; 86: 233- 238.
McNamara, S., Butler, T., Ryan, D.P., Mee, J.F., Dillon, P., O’Mara, F.P., Butler, S.T., Anglesey, D., Rath, M., Murphy, J.J.: Effect of offering rumen-protected fat supplements on fertility and performance in spring-calving Holstein-Friesian cows. Anim. Reprod. Sci., 2003; 76: 45-56.
Rajala-Schultz, P.J., Frazer, G.S.: Reproductive performance in Ohio dairy herds in the 1990s. Anim. Reprod. Sci., 2003; 76: 127-146.
Alejandrino, A.L., Asaad, C.O., Malabayabas, B., De Vera, A.C., Herrera, M.S., Deocaris, C.C., Ignacio, L.M., Palo, L.P.: Constraints on dairy cattle productivity at the smallholder level in the Philippines. Prev. Vet. Med., 1999; 38: 167-178.