Genetic and environmental parameters and trends for milk production of Holstein cattle in Turkey

Şahin, Aziz; Ulutaş, Zafer; Adkinson, Asiye Yilmaz; Adkinson, R.W.

doi:10.4081/ijas.2012.e44

Cited by 16 publications

(22 citation statements)

References 15 publications

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“…The genetic and phenotypic correlations between FLY and FLL were 0.60±0.13and 0.777 and with FWA were 0.79±0.20 and 0.817, respectively. The present estimate of the correlation between the FLY and FLL is comparable to the estimates reported by earlier in Kankrej cattle [ 7 ], Brown Swiss cattle [ 12 ], Sahiwal cattle [ 16 - 18 ], and in Holstein-Friesian cattle [ 19 ] and with FWA comparable in Hariana cattle [ 15 ]. The genetic correlation of 0.60 indicated the plieotropic effect of the genes on the two traits.…”

Section: Resultssupporting

confidence: 90%

Genetic analysis of first lactation production traits in Kankrej cattle

et al. 2016

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Aim:The aim was to estimate genetic factors affecting the first lactation milk production traits in Kankrej cattle of North Gujarat.Materials and Methods:The 475 first lactation records of Kankrej cows that were maintained at the Livestock Research Station, Sardarkrushinagar Dantiwada Agricultural University, Sardarkrushinagar, Gujarat, over a period of 35 years from 1980 to 2014 were studied. The least squares maximum likelihood program was used to estimate genetic parameters of first lactation traits. Heritability was estimated through paternal half-sib analysis in adjusted data.Results:The heritability estimate for production traits was 0.40±0.17, 0.45±0.17, 0.35±0.18, and 0.20±0.14 for standard 300 days milk yield (F300Y), total lactation milk yield (FLY), wet average (FWA), and lactation length (FLL), respectively, in the first parity. All the genetic and phenotypic correlations among different production efficiency traits were high and positive. Genetic correlations between F300Y and FLY, FLL, and FWA were 0.80±0.20, 0.59±0.16, and 0.81±0.32, where as the phenotypic correlations were 0.969, 0.688, and 0.868, respectively. Genetic correlations of FLY with FLL and FWA were 0.60±0.13 and 0.79±0.20, whereas the phenotypic correlations were 0.777 and 0.817, respectively. Genetic and phenotypic correlation between FLL and FWA was 0.63±0.28 and 0.31, respectively.Conclusion:The heritability estimate of all first parity lactation traits waslow to medium (0.20-0.45) indicated the scope for further improvement in this trait through selection as well as managemental practice. Higher genetic and phenotypic correlation between thefirst lactation milk production traits gives theidea that genetic gain due to selection for one trait also givesmorecorrelated response of selection for other traits which is economically advantageous.

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Section: Resultssupporting

confidence: 90%

Genetic analysis of first lactation production traits in Kankrej cattle

et al. 2016

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“…Milk yield is the most important parameter for selection programs in dairy cattle (Sahin et al 2012). In many countries, milk production records have been used for earlier selection decision and genetic evaluation of dairy cattle (Pelmus et al Production differences are the functions of both genotypic and phenotypic differences between cows (Sargeant et al 1998).…”

Section: Introductionmentioning

confidence: 99%

“…This region is quite suitable for Jersey cattle in terms of climatic characteristics and geographical structure (Erdem et al 2010). To date, breeding studies were conducted on the characteristics of milk yield of Jersey cows (Lofgren et al 1985;Roman et al 2000;Sahin et al 2012). A sufficient and comprehensive study on the milk characteristics of Jersey has not been established in Turkey.…”

Section: Introductionmentioning

confidence: 99%

Estimation of genetic and environmental parameters for milk traits in jersey cows

Kul¹,

Abacı²,

Cobanoglu³

et al. 2018

Mediterranean Agricultural Sciences

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The aim of this study was to estimate the genetic parameters and environmental factors for test day milk yield (TDMY), lactation milk yield (LMY), 305-day milk yield (305-DMY), milk fat percentage (FP) and milk protein percentage (PP) of Jersey cows raised on Karaköy Agricultural State Farm in Samsun province of Turkey. The data were obtained from 279 milk yield records of 170 heads cows calved from 2011 to 2013 years. Parity, calving season and calving year were considered as fixed effects. Heritability, additive genetic variance and phenotypic variance were estimated by multiple trait derivative free restricted maximum likelihood (MTDFREML) with the animal model. Variance analysis results showed that except for FP, the effects of parity and calving year on TDMY, LMY, 305-DMY and PP were significantly important (P<0.05). However, calving season did not affect TDMY, LMY, 305-DMY, FP and PP (P>0.05). Heritability estimates for TDMY, LMY, 305-DMY, FP and PP were 0.38, 0.30, 0.28, 0.19, and 0.36, respectively. Repeatability for TDMY, LMY, 305-DMY, FP and PP were ranged from 0.35 to 0.45. The results indicate that these traits can be used as a selection criteria in genetic improvement of Jersey cattle this herd.

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“…KAWAHARA et al, (2006) reports average production of Holstein-Friesian cows in Japan -milk, fat, and protein yields, and fat and protein contents were 7,899 kg, 301 kg, 253 kg, 3.83%, and 3.18%, respectively. SAHIN et al, (2012) reports first lactation mean values for 305-day milk yield, actual lactation milk yield, and lactation length were 6222±35.8 kg, 6651±42.6 kg, and 327±1.3 days. Second and third 305-day lactation yields were proportionately 8% and 11% greater, respectively.…”

Section: Resultsmentioning

confidence: 95%

Variability and heritability of milk traits of Holstein-Frisian bull dams and their progeny

et al. 2018

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The research was performed on Holstein-Friesian and Black and White bull dams reared on five farms of Agricultural Corporation of Belgrade - PKB. The study included 575 lactations of cows selected as bull dams and their progeny calved in the period from 2007 - 2014 and represent progeny of 24 bulls. The following dairy traits were analysed in a standard lactation (305 days): milk yield (kg) - MY, milk fat content (%) - % MF, milk fat yield (kg) - MFY, protein content (%) - % PC and protein yield (kg) - PY. Holstein-Friesian bull dams and their progeny, in standard lactation, produced on average 9239.84 ? 1607.64 kg of milk, with a milk fat content of 3.44 ? 0.20 and protein content of 3.21 ? 0.12. The impact of bull - sire, year of birth, lactation order, farm, year and calving season was present at different levels of statistical significance on yield traits, while the genetic group had no influence on any of the milk traits. Bull - sire, year of birth, lactation order and calving season did not influence the variability of milk fat and protein content. Heritability of observed milk traits was medium to low. The content of milk fat and protein had the lowest values of heritability, 0.014, and 0.024, respectively. The heritability of milk yield, milk fat yield and protein yield was 0.293, 0.319 and 0.273, respectively. [Project of the Serbian Ministry of Education, Science and Technological Development, Grant no. TR 31053]

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Genetic and environmental parameters and trends for milk production of Holstein cattle in Turkey

Cited by 16 publications

References 15 publications

Genetic analysis of first lactation production traits in Kankrej cattle

Genetic analysis of first lactation production traits in Kankrej cattle

Estimation of genetic and environmental parameters for milk traits in jersey cows

Variability and heritability of milk traits of Holstein-Frisian bull dams and their progeny

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