The Relationship Between the Length of Productive Life and the Body Conformation Traits in Cows

Strapák, Peter; Juhás, Peter; Strapáková, Eva

doi:10.5513/jcea01/12.2.905

Cited by 7 publications

(7 citation statements)

References 18 publications

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“…These results are similar to those observed by Zavadilová and Stípková (2012), who reported a genetic correlation between rump width and Long2 of -0.15, and less than that observed by Cruickshank et al (2002) and Zavadilová and Stípková (2012), who found correlations between rump width and Long5 of -0.27 and Long4 of -0.29, in Jersey and Holstein cows, respectively. Rump traits are associated with calving ease, this being important for the dairy industry, where cows with calving problems are less profitable due to the increase in veterinary costs and The average for Long2 (2.66) ( Table 3) was similar to that observed in dairy cows in the United States of America by Tsuruta et al (2005), with an average of 2.8 initiated lactations, slightly lower than those reported by Potočnik et al (2011) in Slovenia and Strapák et al (2011) in Slovakia, with averages of 3.0 and 3.4 lactations initiated, respectively, for Holsteins and Simmental dairy cows.…”

Section: Resultsmentioning

confidence: 80%

Genetic association between longevity and linear type traits of Holstein cows

Kern

Cobuci

Costa

et al. 2015

Sci. agric. (Piracicaba, Braz.)

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Longevity is a desirable trait in the dairy industry because of its relationship to profitability. The aim of this study was to estimate genetic parameters for longevity measurements related to productive life, or life in the herd, and linear type traits of Brazilian Holstein cows born between the years 1990 and 2008. The (co) variance components were estimated by the restricted maximum likelihood method. The heritability for measurements of longevity and linear type traits ranged from 0.05 to 0.07 and 0.08 to 0.39, respectively. The genetic correlations between measurements of longevity and linear type traits ranged from -0.39 to 0.31. Direct selection for longevity does not necessarily lead to long-lived cows, due to low heritability. Indirect genetic selection for udder depth, bone quality, udder height, rear teat placement and conformation traits showed the highest genetic correlations with measurements of time between birth and last milk record and time from first calving to last milk record.

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Section: Resultsmentioning

confidence: 80%

Genetic association between longevity and linear type traits of Holstein cows

Kern

Cobuci

Costa

et al. 2015

Sci. agric. (Piracicaba, Braz.)

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“…The influence of exterior traits on the length of productive life in Slovak Simmental cows was analyzed by Čanji et al [ 101 ] and Strapák et al [ 102 ]. The udder had a great impact on this length among the main exterior traits.…”

Section: Discussionmentioning

confidence: 99%

Estimation of Dairy Cow Survival in the First Three Lactations for Different Culling Reasons Using the Kaplan–Meier Method

Grzesiak

Adamczyk

Zaborski

et al. 2022

Animals

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The aims of the study were: (i) to compare survival curves for cows culled for different reasons over three successive lactations using the Kaplan–Meier estimator; (ii) to determine the effects of breeding documentation parameters on cow survival; (iii) to investigate the similarity between culling categories. The survival times for a subset of 347,939 Holstein-Friesian cows culled between 2017 and 2018 in Poland were expressed in months from calving to culling or the end of lactation. The survival tables were constructed for each culling category and lactation number. The survival curves were also compared. The main culling categories were reproductive disorders—40%, udder diseases—13 to 15%, and locomotor system diseases—above 10%. The survival curves for cows from individual culling categories had similar shapes. A low probability of survival curves for metabolic and digestive system diseases and respiratory diseases was observed in each of the three lactations. The contagious disease category was almost non-existent in the first lactation. The greatest influence on the relative culling risk was exerted by age at first calving, lactation length, calving interval, production subindex, breeding value for longevity, temperament, and average daily milk yield. A more accurate method of determining culling reasons would be required.

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“…Average for Long3 of 1.5 was lower than values of 2.7 and 2.8 reported for Brazilian and US Holsteins, respectively [13] [14]. Higher values of 3.0 and 2.4 for Slovak Holsteins and Simmental dairy cows, respectively, have been reported [15] [16]. In the Kenyan Sahiwal herd, cows remained on average 2231.1 days, 1172.7 days from birth (Long1) or first calving (Long2), respectively, an average of 738 days in milk till they exited the herd through death or culling.…”

Section: Resultsmentioning

confidence: 69%