Genetic and Environmental Influences on Birth Weight, Weaning Weight and Average Daily Gain of Holstein Calves in Syrian Coast Conditions

Almasri, Obaida; AL-Dakkak, M.; Bakr, Samy Abo

doi:10.21608/ejap.2020.121423

Cited by 2 publications

(8 citation statements)

References 24 publications

(21 reference statements)

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“…Moreover, the estimates in the current study were higher than those reported by Atil et al (2005), Oudah and Zainab (2010) and Almasri et al (2020) for WW. Concerning ADG, Almasri et al (2020) working on Holstein Friesian reported low estimates compared to the current study. In general, the differences between the results of this study and the results of previous research may be due to the differences in the methods of statistical analysis, the number of records used, different management and ways of care.…”

Section: Heritability Estimates For Growth Traitscontrasting

confidence: 95%

“…Also, the estimates were lower than the Holstein Friesian estimates reported by Abera et al (2011) for BW0, WW, and ADG, respectively. Conversely, the estimates were higher than those reported by Zainab, (2010), Zeleke et al (2016), Sahin et al (2017) and Almasri et al (2020) for BW0. Moreover, the estimates in the current study were higher than those reported by Atil et al (2005), Oudah and Zainab (2010) and Almasri et al (2020) for WW.…”

Section: Heritability Estimates For Growth Traitscontrasting

confidence: 66%

“…Conversely, the estimates were higher than those reported by Zainab, (2010), Zeleke et al (2016), Sahin et al (2017) and Almasri et al (2020) for BW0. Moreover, the estimates in the current study were higher than those reported by Atil et al (2005), Oudah and Zainab (2010) and Almasri et al (2020) for WW. Concerning ADG, Almasri et al (2020) working on Holstein Friesian reported low estimates compared to the current study.…”

Section: Heritability Estimates For Growth Traitscontrasting

confidence: 66%

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Estimation of direct and maternal genetic parameters for pre-weaning growth traits in Friesian calves

Hussein

El-den

Sanad

et al. 2022

Archives of Agriculture Sciences Journal

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The objective of this study was to obtain direct heritability(h 2 a), maternal heritability (h 2 m), permanent environmental (pe 2 ) effect and estimated breeding values (EBVs)for pre-weaning body weight at birth (BW0/Kg), body weight at 30 days of age (BW30/Kg), body weight at 60 days of age (BW60/Kg), weaning weight (WW/Kg): body weight of calf at weaning and average daily gain (ADG/kg) of 1376 Friesian calves progeny of 33 sires and 284 dams during the period from the years 2009 to 2020, which bred at El-Karada Experimental station, Animal Production Research Institute (APRI), Agricultural Research Center (ARC), Dokki, Giza, Egypt. Pre-weaning growth traits are subject to the very clear influence of non-genetic factors included sex of calf, parity of dam, year and season of calving. The direct heritability h 2 a estimates for all growth traits under study were moderate. Estimates of h 2 a were 0.24 for BW0, 0.21 for both BW30 and BW60, 0.19 for WW and 0.23 for ADG. Estimates of h 2 m were 0.08 for BW0, 0.10 for BW30, 0.05 for BW60, 0.04 for WW, and 0.06 for ADG. The portion of pe 2 also was low, it was 0.049 for BW0, 0.064 for BW30, 0.041 for BW60, 0.044 for WW and 0.034 for ADG. Ranges of EBVs for Friesian calves were 4.585 kg for BW0, 6.821 kg for BW30, 9.075 kg for BW60, 9.459 kg for WW and 1.159 kg for ADG. The accuracy of minimum and maximum calves EBVs ranged from 56 to 79 %. Based on the results of the current study, improvement for these traits could be achieved through well-planned genetic improvement through selection for best animals according to their breeding values. Further investigation on the same traits using many data is required to reveal a more accurate and reliable genetic evaluation.

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Section: Heritability Estimates For Growth Traitscontrasting

confidence: 95%

Section: Heritability Estimates For Growth Traitscontrasting

confidence: 66%

Section: Heritability Estimates For Growth Traitscontrasting

confidence: 66%

See 1 more Smart Citation

Estimation of direct and maternal genetic parameters for pre-weaning growth traits in Friesian calves

Hussein

El-den

Sanad

et al. 2022

Archives of Agriculture Sciences Journal

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“…As shown in Table 1.the average mean of BW was 31±5.2 kg in sequence with the findings of (Atil et al, 2005;Ali et al, 2019 ;Magwaba et al, 2019),but lower than a range of 34 -40 kg reported by several authors (Kaygısız et al, 2012;Yaylak et al, 2015;Abdel Fattah et al, 2019;Almasri et al, 2020 ;Atashi et al, 2021), and higher than 28.6 kg ( Safaa andGharib, 2017 andHussein et al,2022) in Friesian cows.…”

Section: Resultssupporting

confidence: 81%

“…Steady similar increases in BW (P<0.001) were attained after the first parities due to dams maturity. Similar results were obtained by different investigators (Kaygisiz et al, 2011;Sahin et al,2012;Dhakal et al,2013;Kamal et al,2014;Safaa and Gharib, 2017;Selvan et al,.2018 ;Almasri et al,2020;Hussein et al,2022 ). Also, BW increased with advancement of PR number (Raja et al, 2010;Sahin et al,2012) as calf BW is a function of dams stage of maturity .…”

Section: Effect Of Parity (Pr)supporting

confidence: 77%

Genetic Parameters of Direct and Maternal Effects for Birth Weight of Friesian Calves under Egyptian Farm conditions

Genena¹,

El-Sawy²,

Shaarawy³

et al. 2022

Journal of Animal and Poultry Production

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A total of 4889 birth weight (BW) records on calves of 1609 Friesian cows in Sakha experimental farm were collected between 1975 and 2020 year. The analytical model included the fixed effects of the parity, calving year and season, age at first calving, gestation period length and calf sex. Variance components, heritabilities, direct maternal correlations and breeding values (BV) were estimated using VCE6 program. Genetic trends of calves BW were evaluated by regressing BV on years of calving using GLM process of SAS software. Results showed highly (P≤ 0.001) significant effects of all studied fixed effects on BW. Direct (h 2 a), sire (h 2 s), maternal (h 2 m) and total (h 2 t) heritabilities and direct maternal correlations (ram) estimates were 0.01, 0.10, 0.05, 0.09 and 0.01, respectively. Estimated BVs of calves, sires and dams ranged from -6.71 to 6.84, -6.04 to 4.38 and -7.29 to 8.86 kg, respectively. Range of BVs for dams was higher than for sires and calves, but the accuracy of calves BVs were higher than others. The genetic trend was not different from zero showing no indication of change in the genetic merit of BW in this farm during the period of study.Dam selection proved to be important for inducing high genetic progress in BW during the subsequent generation. Moreover, BV estimates of calves BW achieved higher accuracy ranging from 0.69 -0.81% comparing to those for sires and dams by indirect selection. However, improvement in calves BW may also be achieved by practicing better management programs in this herd.

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Genetic and Environmental Influences on Birth Weight, Weaning Weight and Average Daily Gain of Holstein Calves in Syrian Coast Conditions

Cited by 2 publications

References 24 publications

Estimation of direct and maternal genetic parameters for pre-weaning growth traits in Friesian calves

Estimation of direct and maternal genetic parameters for pre-weaning growth traits in Friesian calves

Genetic Parameters of Direct and Maternal Effects for Birth Weight of Friesian Calves under Egyptian Farm conditions

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