Associations between the breeding values of Holstein-Friesian bulls and longevity and culling reasons of their daughters

Adamczyk, Krzysztof; Jagusiak, W.; Węglarz, A.

doi:10.1016/j.animal.2021.100204

Cited by 7 publications

(6 citation statements)

References 24 publications

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“…A significant association between longevity and culling reasons with milk performance traits and the reproduction of cows has been indicated, taking into account management conditions at the same time (e.g., herd size, culling season). For instance, the need to consider factors, such as the percentage of Holstein-Friesian genes, the breeding values of cows and sires, age at first calving, the length of calving interval, and milk performance, has been confirmed in the evaluation of longevity and culling reasons in high-yielding animals [ 21 , 22 , 23 , 24 , 25 , 26 , 27 ]. Considering the above, the analysis of longevity and survivability of dairy cows in terms of breeding and production aspects has been a top research topic in recent years.…”

Section: Introductionmentioning

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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Section: Introductionmentioning

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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“…Many scientists, when predicting the productivity of animals, give the main role to linearity, while they do not take into account the qualitative indicators of the milk productivity of mothers, the results of our studies provide a basis for breeding according to this indicator in order to improve the industry of dairy horse breeding [14,15].…”

Section: Resultsmentioning

confidence: 98%

Genetic factor affecting the milk production of mares

Чиргин

Семенов

Mokretsova

et al. 2021

IOP Conf. Ser.: Earth Environ. Sci.

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The article presents the results of studies to establish the influence of the record productivity of mothers’ mares on milk yield and the duration of productive life of mares-daughters of the Lithuanian heavy draft breed. It was found that the high level of milk productivity of mothers during the period of highest lactation (up to 4000 kg of milk) enabled their daughters to become leaders already during the first lactation. With an increase in the record milk yields per lactation in mothers, the heritability coefficient in mother-daughter pairs decreased and turned into negative values. The daughters of mares with record milk yields of up to 8000 are the most dairy among their contemporaries. The research results indicate that intensive milk production of mares during the first lactation can cause a reduction in the terms of their economic use due to the large loads on the developing fragile animal organism. The highest rates of productive life, number of lactations and life-long milk yield were obtained from daughters whose mothers had record milk yields per lactation from 7000 kg to 8000 kg of milk.

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“…However, several reports have highlighted that high milk yield is a contributing factor to the culling of dairy cows. 12,13,24,25 In addition to the ambiguity of why high milk producers are culled, there is a negative correlation between mastitis (a common reason for culling dairy cows) and high milk production. 12 The closest reasoning or influence to the culling of high producing cows is abortion cases, especially in Holstein breeds.…”

Section: Culling Due To Agementioning

confidence: 99%

Culling and mortality of dairy cows: why it happens and how it can be mitigated

Yanga

Jaja

2021

F1000Res

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The United Nations estimates that the global population will total 9.7 billion in 2050. Rapid population growth pose a significant obstacle to achieving the Sustainable Development Goals, particularly eradicating hunger and poverty. In view of the expanding population growth, food production ideally should triple to prevent massive food shortages. Sustainable food and nutrition security is the focal point of the dairy industry. Dairy production plays a pivotal role in addressing and advancing global food and nutrition security. It serves as a major source of protein, calcium, and phosphorus in many families in developing countries with a fast-growing population. Consequently, the dairy industry is expected to grow by approximately 26% in the next 10 years and produce an estimated 1077 million tonnes of milk by 2050. However, the growth and distribution of the dairy industry is limited by many factors such as culling and mortality of dairy cows. Several studies highlight reproduction failures, old age, poor milk yield, diseases (mastitis, lameness, and dystocia), and heat stress as some reasons for culling of dairy cows. Hence, this review highlights the factors influencing culling and mortality in dairy production farms, and discusses mitigating measures to limit culling.

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Associations between the breeding values of Holstein-Friesian bulls and longevity and culling reasons of their daughters

Cited by 7 publications

References 24 publications

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

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

Genetic factor affecting the milk production of mares

Culling and mortality of dairy cows: why it happens and how it can be mitigated

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