القيم التربوية لبعض صفات أنتاج اللبن والصفات التناسلية في قطيع هولشتاين مربي في مصر

Abou-Bakr (2003) . Estimation of heritability and breeding values using single test days records of first lactation milk yield of Holstein cows. Egyptian .J.Anim . Prod . (2003) 40 (2):121-128.

Abd-Elhamid(2018) Evaluation of reproductive and productive performance for Friesian, crosses and local cows under Egyptian condition. Thesis PhD Faculty of Agriculture Kafr el sheikh University.

Afifi .,E.A.,AbdelGlil, M.F. ; Salem.M.A; A. Arafa and Safaa . S.S. I (2004) Genetic Aspects of age at first calving and longevity traits in a commercial Holstein herd raised under Egyptian condition. Annals of Agric .Sci ., Moshtohor, 42 (3); 1027-1038 .

Afifi, E.A., Khalil, M.H., Arafa Samira A. and M.A. Salem (2002). Estimation of transmitting abilities for lactation traits using the animal model for Holstein cattle raised under a commercial farm in Egypt. J. Agric. Sci., Mans. Univ., 27 (1): 89– 97.

Alhammad, H.O.A. (2005). Phenotypic and genetic parameters of some milk production traits of Holstein cattle in Egypt. M. Sc. Thesis Fac. Agric. Cairo Univ., Egypt.

Amr .M . A. (2013) Evaluation of performance of some dairy herds in Egypt PhD .Thesis Face .Agaric . Alexandria Universe . Egypt.

Attalla, S.A. (2003). Use of test day model to estimate the first lactation parameters of a commercial Holstein herd. M.Sc. Thesis Fac. Agric., Cairo Univ. Cairo., Egypt.

Ayied, A.Y; Jadoa A. J. and Abdulrada, A.J. (2011).Heritabilities and breeding values of production and reproduction traits of Holstein cattle in Iraq. Journal Basrah Research Science, 37: 66-70.

El-Arian , M.N., El-Awady , H.G., and Khattab , A.S. (2003) . Genetic analysis for some productive traits of Holstein Friesian cows in Egypt through MTDFREML program . Egypt . J . Anim . Prod ., 40 : 99 .

El-Awady, H.G, A.E. Abdel-Khalek and M. Abo Elreesh (2016). Genetic evaluation for some productive and reproductive traits by using animal model in a commercial Friesian herd in Egypt. J.Anim. Poul. Prod., Mans. Univ., 7 (7): 279-285.

El-Shalmani, A.F. (2011). Evaluation of production performance in relation to genetic structure of some economical traits in Friesian cows (Thesis). [Alexandria (Egypt)]: Saba Basha, Alex. Univ.

Gad , M. E. (2005) Evaluation of different methodse of estimating correction factors for milk production records in dairy cattle . Ph.D. Thesis , Fac . Agric . at Moshtohor Banha University , Egypt .

Hammoud, M.H. and M.M.I. Salem (2013). The genetic evaluation of some first lactation traits of Holstein cows in Egypt. Alex. J. Agric. Res., 58 (1): 1-8.

Hatem Ismail, L.M. (2006). Phenotypic and genetic parameters of milk production and reproductive performance of Holstein cattle under the intensive production system in Egypt. M.Sc. Thesis, Fac. Agric., Cairo Univ., Egypt.

Meyer , K . (1998). DF-REML (Derivative-Free Restricted Maximum Likelihood ) . Package Version 3.06th World Cong Genetic Appl . Lived . Prod . Armidal , New South Wales , Australia .

Mousa , E., Abdelharith , H., and El-Sayed , M .(2002) . Genetic and phenotypic parameters of number of service per conception as a threshold traits and 305 milk yield as continuous trait using Gibbs sampling and MTDREML Egyptian J . Anim . Prod . 39 : 95 .

Nigm A . A ., Attallah . S. A., Abou-Bakr S. and Sadek R. R . (2003)A Study on Applying test day Model for genetic evaluation of milk yield of Holstein cattle in Egypt . Egyptian . Anim . Prod .(2003) 40 (2) : 89-98 .

Sanad,S.S. (2016) Genetic improvement using the selection indices for some productive and reproductive traits in Friesian cattle raised in Egypt J. Anim. and poultry Prod ., Mansoura Univ., Vol .7 (12) : 475-482 .

Safaa . Ibrahim .S.S. (2002) . Life time productive traits of Holstein Friesian cattle Raised in Egypt . M . Sc . Thesis , Fac . Agric ., Moshtohor , Zagazig Univ ., Banaha Branch , Egypt .

Safaa,S.S.I and Afify, A.A (2016) Comparing genetic parameters of Friesian milk production traits in commercial and state farms in Egypt .J .Agricultural Research Center. No. 4. Under publication.

Salem, M.A., Esmail H.M., Sadek R.R. and A.A. Nigm (2006). Phenotypic and genetic parameters of milk production and reproductive performance of Holstein cattle under the intensive production system in Egypt. Egypt J. Anim. Prod., 43:1-10.

Shitta, A.A., Tag El-Dien, M.A. and S.S. Awad (2002). A study on production and reproduction traits of Friesian cattle in Egypt. J. Agric. Sci., Mans. Univ., 27: 7281-7289.

SAS (1996) . Procedures Guide , Version 6.12 , 1996 . SAS Jnst .ns .,Car , NC ., U.S.A.