Risk factors and milk yield losses associated with lameness in Holstein-Friesian dairy cattle

Mastitis is a complex disease causing inflammation of the udder, which has been estimated to cost the dairy farmer between £40-£117/cow per year (Stott et al., 2002). Economic loss occurs as a result of discarded milk, reduced milk yield and milk quality, increased vet costs and an increase in replacement costs. The objective of this study was to examine the effect of breed on the incidence of mastitis and somatic cell counts and milk production capabilities of Holstein Friesian, Brown Swiss and Brown Swiss crossbred cows.

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The effect of space allowance and milk yield level on the performance and behaviour of dairy cattle housed in straw yards

Proceedings of the British Society of Animal Science ◽

10.1017/s1752756200597609 ◽

1998 ◽

Vol 1998 ◽

pp. 108-108

Author(s):

J. A. Fregonesi ◽

J.D. Leaver

Keyword(s):

Dairy Cattle ◽

Milk Yield ◽

Stocking Density ◽

Important Variable ◽

Early Lactation ◽

Ways Of Coping ◽

Yield Level ◽

Face Width ◽

Holstein Friesian ◽

Friesian Cows

Space allowance could be an important variable affecting production, health, reproductive performance and behaviour of dairy cattle. Also, high and low yielding cows may have different ways of coping with insufficient space allowance. The aim of this experiment was to study the influence of space allowance and milk yield level on the performance and behaviour of strawyard housed dairy cows.The experiment was carried out using 24 Holstein Friesian cows with two groups in early lactation of high (over 30 kg/day milk yield) and two groups in late lactation of low yield (under 25 kg/day milk yield). The groups were allocated to strawyard systems with low stocking density (bed area/cow = 9 m2; pen area/cow = 13.5 m2; feed face width/cow = 1.5 m) or high stocking density (bed area/cow = 4.5 m2; pen area/cow = 6.75 m2; feed face width/cow = 0.75m) conforming to a changeover design with two periods, each of four weeks. The cows were fed a total mixed ration ad libitum and 2kg/cow/day of concentrate in the milking parlour. All animals were milked twice daily.

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Heritability of Teat Condition in Italian Holstein Friesian and Its Relationship with Milk Production and Somatic Cell Score

Animals ◽

10.3390/ani10122271 ◽

2020 ◽

Vol 10 (12) ◽

pp. 2271

Author(s):

Francesco Tiezzi ◽

Antonio Marco Maisano ◽

Stefania Chessa ◽

Mario Luini ◽

Stefano Biffani

Keyword(s):

Dairy Cattle ◽

Somatic Cell ◽

Milk Yield ◽

Genetic Factors ◽

Genetic Correlations ◽

Somatic Cell Score ◽

Cattle Industry ◽

Holstein Friesian ◽

Selection For ◽

Current Selection

In spite of the impressive advancements observed on both management and genetic factors, udder health still represents one of most demanding objectives to be attained in the dairy cattle industry. Udder morphology and especially teat condition might represent the first physical barrier to pathogens’ access. The objectives of this study were to investigate the genetic component of teat condition and to elucidate its relationship with both milk yield and somatic cell scores in dairy cattle. Moreover, the effect of selection for both milk yield and somatic cell scores on teat condition was also investigated. A multivariate analysis was conducted on 10,776 teat score records and 30,160 production records from 2469 Italian Holstein cows. Three teat scoring traits were defined and included in the analysis. Heritability estimates for the teat score traits were moderate to low, ranging from 0.084 to 0.238. When teat score was based on a four-classes ordinal scoring, its genetic correlation with milk yields and somatic cell score were 0.862 and 0.439, respectively. The scale used to classify teat-end score has an impact on the magnitude of the estimates. Genetic correlations suggest that selection for milk yield could deteriorate teat health, unless more emphasis is given to somatic cell scores. Considering that both at national and international level, the current selection objectives are giving more emphasis to health traits, a further genetic deterioration in teat condition is not expected.

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Genetic analyses of profit for Australian dairy cattle

Animal Science ◽

10.1017/s1357729800013461 ◽

1995 ◽

Vol 61 (1) ◽

pp. 9-18 ◽

Cited By ~ 15

Author(s):

P. M. Visscher ◽

M. E. Goddard

Keyword(s):

Dairy Cattle ◽

Milk Yield ◽

Selection Index ◽

Genetic Correlations ◽

Net Income ◽

For Profit ◽

Holstein Friesian ◽

Yield Trait ◽

Dairy Bulls ◽

Selection Of

AbstractDirect genetic evaluation of profit was investigated as an alternative to a selection index. PROFk was defined as (net income)/(food requirement) until the start of the kth lactation, for k = 2 to 6. Genetic parameters such as heritabilities and genetic correlations were estimated for profit traits for Australian Holstein-Friesian and jersey dairy cattle. Heritabilities for profit until the start of a given lactation were moderate, ranging from 0·12 (for profit until the start of the second lactation in Holsteins) to 0·31 (profit until the start of the third lactation in Jerseys). Genetic correlations between profit traits were very high, and approached unity for most pairs of traits, so that profit early and late in herd life were nearly the same trait. Genetic correlations between profit traits and stayabilities until a given lactation were high, ranging from 0·71 to 0·97. Genetic correlations between profit traits and first lactation milk yield traits were approximately 0·80 for Holsteins and 0·90 for Jerseys. A single analysis urns carried out for lifetime profit using all data, including cows that were still in the herd at the time of data collection. Heritabilities were 0·13 for Holsteins and 0·19 for Jerseys. Genetic correlations between lifetime profit and first lactation yields were high. For the selection of dairy bulls, a multivariate analysis on a milk yield trait (e.g. protein yield) and profit until the last known lactation of bulls' progeny was suggested.

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Inclusion of bioclimatic variables in genetic evaluations of dairy cattle

Animal Bioscience ◽

10.5713/ajas.19.0960 ◽

2021 ◽

Vol 34 (2) ◽

pp. 163-171 ◽

Cited By ~ 1

Author(s):

Renata Negri ◽

Ignacio Aguilar ◽

Giovani Luis Feltes ◽

Juliana Dementshuk Machado ◽

José Braccini Neto ◽

...

Keyword(s):

Heat Stress ◽

Dairy Cattle ◽

Milk Yield ◽

Fixed Effects ◽

Information Criterion ◽

Least Square ◽

Random Regression ◽

Yield Losses ◽

Bioclimatic Variables ◽

Genetic Evaluations

Objective: Considering the importance of dairy farming and the negative effects of heat stress, more tolerant genotypes need to be identified. The objective of this study was to investigate the effect of heat stress via temperature-humidity index (THI) and diurnal temperature variation (DTV) in the genetic evaluations for daily milk yield of Holstein dairy cattle, using random regression models.Methods: The data comprised 94,549 test-day records of 11,294 first parity Holstein cows from Brazil, collected from 1997 to 2013, and bioclimatic data (THI and DTV) from 18 weather stations. Least square linear regression models were used to determine the THI and DTV thresholds for milk yield losses caused by heat stress. In addition to the standard model (SM, without bioclimatic variables), THI and DTV were combined in various ways and tested for different days, totaling 41 models.Results: The THI and DTV thresholds for milk yield losses was THI = 74 (–0.106 kg/d/THI) and DTV = 13 (–0.045 kg/d/DTV). The model that included THI and DTV as fixed effects, considering the two-day average, presented better fit (–2logL, Akaike information criterion, and Bayesian information criterion). The estimated breeding values (EBVs) and the reliabilities of the EBVs improved when using this model.Conclusion: Sires are re-ranking when heat stress indicators are included in the model. Genetic evaluation using the mean of two days of THI and DTV as fixed effect, improved EBVs and EBVs reliability.

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The effect of space allowance and milk yield level on the performance and behaviour of dairy cattle housed in straw yards

Proceedings of the British Society of Animal Science ◽

10.1017/s0308229600033213 ◽

1998 ◽

Vol 1998 ◽

pp. 108-108

Author(s):

J. A. Fregonesi ◽

J.D. Leaver

Keyword(s):

Dairy Cattle ◽

Milk Yield ◽

Stocking Density ◽

Important Variable ◽

Early Lactation ◽

Ways Of Coping ◽

Yield Level ◽

Face Width ◽

Holstein Friesian ◽

Friesian Cows

Space allowance could be an important variable affecting production, health, reproductive performance and behaviour of dairy cattle. Also, high and low yielding cows may have different ways of coping with insufficient space allowance. The aim of this experiment was to study the influence of space allowance and milk yield level on the performance and behaviour of strawyard housed dairy cows.The experiment was carried out using 24 Holstein Friesian cows with two groups in early lactation of high (over 30 kg/day milk yield) and two groups in late lactation of low yield (under 25 kg/day milk yield). The groups were allocated to strawyard systems with low stocking density (bed area/cow = 9 m2; pen area/cow = 13.5 m2; feed face width/cow = 1.5 m) or high stocking density (bed area/cow = 4.5 m2; pen area/cow = 6.75 m2; feed face width/cow = 0.75m) conforming to a changeover design with two periods, each of four weeks. The cows were fed a total mixed ration ad libitum and 2kg/cow/day of concentrate in the milking parlour. All animals were milked twice daily.

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Effect Of Lamenss On Body Condition Score, Live Weight And Milk Yield Of Holstein Friesian Dairy Cattle

The Internet Journal of Veterinary Medicine ◽

10.5580/2923 ◽

2009 ◽

Vol 6 (1) ◽

Keyword(s):

Dairy Cattle ◽

Milk Yield ◽

Body Condition ◽

Body Condition Score ◽

Live Weight ◽

Holstein Friesian ◽

Condition Score

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Zum Glukosetoleranztest beim Rind 1. – Mitteilung: Beziehungen zum Laktationsabschnitt und zur Milchleistung

Archives Animal Breeding ◽

10.5194/aab-42-45-1999 ◽

1999 ◽

Vol 42 (1) ◽

pp. 45-56

Author(s):

R. Staufenbiel ◽

U. Reinicke ◽

L. Panicke

Keyword(s):

Glucose Tolerance ◽

Dairy Cattle ◽

Milk Yield ◽

Glucose Tolerance Test ◽

Post Partum ◽

Tolerance Test ◽

Test Results ◽

Dry Period ◽

Stage Of Lactation ◽

Holstein Friesian

Abstract. Titel of the paper: Investigations into glucose tolerance test in cattle. I. Relations to stage of lactation and milk yield. Intravenous glucose tolerance test was used in 104 randomly selected milk cows to proove the influence of stage of lactation on test results. The test period enclosed the time from 8 weeks ante partum ( begin of dry period) to 36 weeks post partum. In another trial the glucose tolerance test was applied in 68 first lactation cows in the time from 2 to 7 days post partum. The test results were correlated to parameters of milk yield of the following lactation. The probands belong to two breeds (Friesian Dairy Cattle, SMR and Holstein-Friesian HF) The Parameters of glucose tolerance test show significant changes in the time from the dry period to the lactation cycle, which can be seen as a mean for supporting milk production. The glucose and insulin related parameters differ in their reaction in dependence on time of lactation. Back fat thickness as an parameter for body fat content shows a similar behaviour as insulin related parameters. In this context their were prooved significant correlation coefficients between parameters of milk yield and insulin function in the range from 0 3 to 0 6 But there were seen no relevant relations between glucose related parameters and milk yield datas. No substantial differences were established between the Friesian Dairy Cattle and Holstein-Friesian cows.

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Seroprevalence and associated risk factors for bovine paratuberculosis in dairy cattle

Journal of the Hellenic Veterinary Medical Society ◽

10.12681/jhvms.26746 ◽

2021 ◽

Vol 72 (1) ◽

pp. 2647

Author(s):

A SELIM ◽

R HALIM ◽

E GALILA ◽

F HAMOUDA

Keyword(s):

Risk Factors ◽

Dairy Cattle ◽

Dairy Cows ◽

Milk Yield ◽

Dairy Farm ◽

Johne's Disease ◽

Lactation Period ◽

Elisa Method ◽

Associated Risk Factors ◽

Important Disease

Paratuberculosis is an economically important disease in dairy cows and requires continuous surveillance. The study aimed to investigate the seroprevalence of bovine paratuberculosis (Johne’s disease) in one of dairy farm in Egypt. A total of 964 dairy cattle were blood sampled and examined with an ELISA method. One-hundred fifty-five (16.1%) samples reacted positively. The results revealed that age was significantly associated with the prevalence of paratuberculosis in dairy cattle, particularly in animals over 6 years of age. Furthermore, the lactation period, milk yield and pregnancy had non-significant effect on appearance of paratuberculosis in cattle.

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