Phenotypic and Genotypic Trends for Some Economic Traits in Egyptian Buffaloes

  • A. S. Khattab
Keywords: Phenotypic, Genotypic, Trends,, Egyptian buffaloes


A total of 2763 lactation records of Egyptian buffaloes, sired by 147 bulls, were collected from Mahalla Mousa Farm, Kafer El sheihk Government. Traits studied are milk production (MP), lactation length (LL) and age of heifers at calving (AHC). Effects of period and month of calving, lactation order and heifers at calving were studied as main effects , beside bull, buffaloes within bulls and errors were studied as random effects.. Also, Animal mode was used to estimate genotypic parameter, transmitting ability, phenotypic and genotypic trends for above traits studied. Least squares analysis of variance (Table 2) show a significant effects of year of calving and month of calving and lactation order on MP, LL and AHC. Linear and quadratic regression coefficients of MP and LL on AHC had also a significant effect. Sires and buffaloes within sires had a significant effect on MP, LL and AHC. Estimates of (h2) were 0.28, 0.20 and 0.10, for MP, LL and AHC respectively. Genotypic correlations between MP and each of LL and AHC were 0.76 and -0.36, respectively. Genotypic correlation between MP and AHC was -0.30. Phenotypic correlation between MP and both of LL and AHC were 0.80 and -0.90, respectively and phenotypic correlation between LL and AHC was -0.40. Predicted transmitting ability from buffaloes ranged from -774 to 933 kg for MP from – 60 to 101 d for LL and from – 4 to 8 mo., for AHC. Predicted sire transmitting ability for MP ranged from – 408 to 535 kg, for LL ranged from -27 to 29 d and for AHC ranged from -2 to 5 mo., Expected dam transmitting ability ranged from -388 to 365 kg for MP, from – 30 to 23 d for LL from - 2 to 2 mo., for AHC. Annual phenotypic and genetic trend for milk production calving was positive and significant. While, annual genotypic change for lactation length and age of heifers at calving were negative and significant.


Download data is not yet available.

Author Biography

A. S. Khattab

Animal Production Department, Faculty of Agriculture, Tanta university Egypt


Abu EL-Naser, I.A.M.S. (2014).Selection indices for genotypic improvement of milk production
using udder health traits in Egyptian buffaloes.Ph.D. Thesis, Faculty of Agriculture,
Kafrelsheikh University, Egypt.
Afzal M, Anwar M, and Mirza M A.(2007). Some factors affecting milk yield and lactation
length in Nili-Ravi buffaloes. Pakistan Veterinary Journal 27(3), 113- 117.
Ashmawy, A.A. (1991).Repeatability of productive traits in Egyptian buffaloes. J. Anim. Breed.
Genet, 27: 182-186.
Boldman , K. G., Kriese, L. A., Van Vleck, l. D., Van tassel, C.P., and Kachman, S. D.(1995).
A Manual for use of MTDFREML.A set of programs to obtain estimates of variances and
covariance's (DRAFT). U. S. Department of Agriculture, Agriculture Research Service.
El- Basuini, M.F .(2010).Genotypic evaluation for semen traits on Egyptian Buffaloes. M.Sc.
Thesis, Faculty of Agriculture, Tanta University, Egypt.
El-Arian, M. N.; N. A. Shalaby ; A. S. Khattab.; S. A. Darwish and R. H. AbouGamous.(2012). Phenotypic and genotypic trends for some milk yield traits of Egyptian
buffaloes .J. Animal and Poultry Prod., Mansoura Univ., Vol.3 (7): 353 – 364.
Ibrahim, M.A.; Khattab, A.S.; Set El- Habaeib, S .Awad and Tozser, J.(2012).Genotypic
parameters for buffalo milk yield and milk quality traits using animal model. Animal
Welfare, ethology and housing systems. Vol.8(2) 175- 182.
Khattab A .S ,; Kawther .A .M and S.E Awade .(2010). Estimation of genotypic parameters
and breeding value for productive traits on Egyptian buffaloes Buffalo world congress,
Argentina, Buenos Aries. 24-28 April 2010.
Khattab, A. S.; El- Awady, H. G.; and El – Arian, M. N. ( 2003). Genotypic analysis of some
performance traits using an animal model in a herd of Egyptian buffaloes. Egyptian. J.
Anim. Prod. 40: 15-26.
Khattab, A.S. and K. Mourad.(1992). Estimation of genotypic parameters and herd of Egyptian
buffaloes. Egyptian J. Anim. Prod.29: 33-44.
LiviaVidu, Adrian Both and Florin Grigore (2013) Study regarding the parameters of buffalo
milk in Romania. Buffalo News letter 28:38-40.
SAS, Institute, Inc. (2000) SAS/STAT Software: Changes and Enhancements Trough Release
8.02. Statistical Analysis System Institute Inc., Cary, NC.
Seno LO, Cardoso VL, El Faro L, Sesana RC, Aspilcueta-Borquis RR, de Camargo GMF,
Tonhati H .(2010).Genotypic parameters for milk yield, age at first calving and interval
between first and second calving in milk Murrah buffaloes. Livestock Research for Rural
Development 22.1-9..
Sharma, H.A., P.U. Gajbhiye, A.r. Ahlawat, A.L. RamaniandV.B.Dongre. (2016). Effect of
non-genotypic factors on age at calving in Jaffarabadi Buffaloes. International J. of Sci.,
Envi., 5: 3192-3196.
Tonhati H, Cerón-Muñoz MF, Oliveira JA, Duarte JMC, Furtado TP, TseimazidesSP
.(2000).Genotypic Parameters of Milk Production, Fat and Protein Contents in Buffalo
Milk. Rev Bras Zootec 29, 2051-2056 ,in Portuguese.
How to Cite
Khattab, A. S. (2018). Phenotypic and Genotypic Trends for Some Economic Traits in Egyptian Buffaloes. GPH-International Journal of Agriculture and Research E-ISSN 2805-4362 P-ISSN 2805-4340, 1(1), 49-59. Retrieved from