Effect of non-genetic factors on milk yields traits in Simmental cows raised subtropical climate condition

Bolacali, Memiş; Öztürk, Yahya

doi:10.1590/1678-4162-9325

Cited by 11 publications

(10 citation statements)

References 7 publications

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“…These results are similar with results of Bujko et al, 2006; Dohi et al, 2010; Dayyani et al, 2013; Toledo-Alvarado et al, 2017; Bujko et al, 2018a, b. Rzewuska, Srabel (2015 and Bolacali, Öztürk (2017) report statistically significant influence of non-genetic factors as breeder, year and season of calving, order of lactation on reproductive traits, which correspond to our results. Grades of freedom, 2 Coefficient of determination (R 2 ), 3 Days to first service (DFS), 4 Days open (DO), 5 Numbers of inseminations per conception (NIC), 6 Calving interval (CI), -P > 0.05, + P < 0.05, ++ P < 0.01, +++ P < 0.001…”

Section: Iii: Relation Between Evaluations Of Reproduction Traits In supporting

confidence: 93%

The Analysis of Reproduction in Population of the Slovak Spotted Dairy Cows

Bujko

Candrák

Strapák

et al. 2019

Acta Univ. Agric. Silvic. Mendelianae Brun.

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The aim of study was to analyse the reproduction and factors affecting on reproduction traits of dairy cows in population of Slovak Spotted cattle from 2007 to 2016 the results for 37,274 dairy cows: days to first service (DFS), days open (DO), number of inseminations per conception (NIC), age of first calving (AFC) and calving interval (CI). The basic statistical analysis were analysed using the SAS version 9.3. For the actual computation a linear models with fixed effects was used: For the actual computation a linear models with fixed effects was used: yijklm = μ + HYSi + BTj+ Fk+ Bl +eijklm. The linear model represents coefficients determination R2 = 0.452117% (P < 0.001) for DFS, R2 = 0.377715% (P < 0.001) for DO, R2 = 0.348442% (P < 0.001) for NIC and R2 = 0.317128% (P < 0.001) for CI with all fixed effects. Correlation coefficients among DFS with DO, NIC, AFC and CI were r = 0.37275, r = -0.06881, r = 0.06493 and r = 0.08348. These coefficients were highly statistically significant (P < 0.001).

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Section: Iii: Relation Between Evaluations Of Reproduction Traits In supporting

confidence: 93%

The Analysis of Reproduction in Population of the Slovak Spotted Dairy Cows

Bujko

Candrák

Strapák

et al. 2019

Acta Univ. Agric. Silvic. Mendelianae Brun.

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“…In the present study, the year of insemination had a significant effect on NRR, FS and GL, and the year of birth had a significant effect on AFC. A similar study on the Simmental breed, has shown that the year effect is strong on female reproductive traits, the effect of the AI technician is significant on FS and AFC, but age at first insemination is not significant in any of the traits [9]. By contrast, reproductive traits in dairy heifers are influenced by age at first insemination: heifers inseminated at an older age for the first time have a slightly higher rate of success at first insemination and, as a result, require a smaller number of services [13].…”

Section: F-value P-value F-value P-value F-value P-value F-value P-vamentioning

confidence: 77%

“…The number of reports on reproductive traits of Japanese Black heifers is relatively small. Low heritabilities of reproductive traits is attributed to nongenetic effects, especially farm management practices that largely affect the reproductive performance of heifers [9]. Selection of reproductive traits in heifers based on genetic parameters may potentially solve reproduction problems in the raising of beef calves.…”

Section: Introductionmentioning

confidence: 99%

Genetics of heifer reproductive traits in Japanese Black cattle

Setiaji

Oikawa

2020

Asian-Australas J Anim Sci

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Objective: The objective of this study was to identify environmental factors strongly asso ciated with and to estimate genetic parameters of reproductive traits in Japanese Black heifers. Methods: Data included reproduction records of Japanese Black heifers born between 2004 and 2014. First service nonreturn rate (NRR) to 56 days from first to successful insemination (FS), number of services per conception (IN), age at first calving (AFC) and gestation length were analyzed with the use of the general linear model. Genetic parameters were estimated with the use of the univariate animal model of the residual maximum likelihood. Results: Averages of reproductive traits over eleven years were assessed, and the effects of farm, year, month, artificial insemination technician and interaction of farm×year on the traits were determined. Estimated heritability of FS was very low and that of AFC was higher than that of the other traits. A close genetic relation was observed among NRR, IN, and FS; however, their heritabilities were very low. AFC shows favorable genetic correlation with IN and FS. Conclusion: Low heritabilities of most reproductive traits in Japanese Black heifers are strongly influenced by farm management practices, and that large residual variances make genetic evaluation difficult. Among the reproductive traits, AFC is potentially more useful for genetic improvement of heifer reproductive traits because it has high heritability and favorable genetic correlations with IN and FS.

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“…in Slovakia (Strapák et al, 2013;Kadlečík et al, 2017;Bujko et al 2018aBujko et al ,b, 2019Kasarda et al, 2019), Austria (Ledinek et al, 2019), Serbia (Perišić et al, 2009, Bulgaria (Karamfilov and Nikolov, 2019), Turkish (Bolacali and Öztürk, 2017;Öner et al, 2019), Romanian (Grădinaru et al, 2014;Cziszter et al, 2017), Poland (Zółkiewski et al, 2018, France (Doublet et al, 2019), Mexican (Utrera et al, 2018) and other countries (Strapák et al, 2013).…”

Section: Changes In Production and Reproduction Traits In Population mentioning

confidence: 99%

Changes in production and reproduction traits in population of the Slovak Spotted Cattle

Bujko

Candrák

Žitný

et al. 2020

Acta fytotechn zootechn

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The study aimed to examine the analyses of the trend in the numbers of dairy cows, production and reproductive traits in the population the Slovak Spotted cattle for period 2010 to 2019. The number of Slovak Spotted dairy cows is maintained on a relatively stable level in recent years. There was a decrease in the number of animals (12 428 in 2010), but not as strong as after 1990 (85 518). From 2017 number of animals is rising from 14,062, to 14,150 (2018) and 14,627 (2019), respectively. As compared to 2010 an increase of 13.15% in 2017, 13.86% and 17.68%, in 2018 and 2019 respectively was observed. Population size raised from 113.15% (2017) to 117.68% in 2019 respectively. The average annual increase in milk production between the years 2010 to 2019 was + 157.5 kg of milk (total 1,575 kg of milk), + 5.8 kg of fat (total 58 kg of fat) and + 6.1 kg of protein (total 61 kg of protein). Positive growth of milk production in recent years is slightly comparable with the trend of breeding improvement.

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Effect of non-genetic factors on milk yields traits in Simmental cows raised subtropical climate condition

Abstract: In conclusion, based on the findings of the present study, the milk yield traits of Simmental cows raised at subtropical climate conditions with ideal feeding and management strategies was in accordance with world standards.

Cited by 11 publications

References 7 publications

The Analysis of Reproduction in Population of the Slovak Spotted Dairy Cows

The Analysis of Reproduction in Population of the Slovak Spotted Dairy Cows

Genetics of heifer reproductive traits in Japanese Black cattle

Changes in production and reproduction traits in population of the Slovak Spotted Cattle

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