scholarly journals Genetic and Phenotypic Relationships Among Endocrine and Traditional Fertility Traits and Production Traits in Holstein-Friesian Dairy Cows

2002 ◽  
Vol 85 (4) ◽  
pp. 958-967 ◽  
Author(s):  
M.D. Royal ◽  
A.P.F. Flint ◽  
J.A. Woolliams
Keyword(s):  
Dairy Cows ◽  
Production Traits ◽  
Holstein Friesian ◽  
Fertility Traits

scholarly journals The differences in production of Holstein Friesian and Holstein Friesian x Norwegian Red F1 crossbreeds

2020 ◽  
Vol 70 (4) ◽  
pp. 284-291
Author(s):  
Stipo Benak ◽  
Tina Bobić ◽  
Vesna Gantner ◽  
Domagoj Eman ◽  
Maja Gregić ◽  
...  
Keyword(s):  
Milk Yield ◽  
Lower Number ◽  
Conception Rate ◽  
Least Square ◽  
Production Traits ◽  
Retained Placenta ◽  
Service Period ◽  
Holstein Friesian ◽  
Fertility Traits ◽  
Insight Into

The aim of this study was to compare the production, health and fertility traits of Holstein Friesian (HF) and their F1 crosses with Norwegian Red cows (HF x NRF F1). Only the production data’s from finished first lactations of the total 57 HF x NRF F1 crosses and 401 HF cows, and for health and fertility traits of 120 HF x NRF F1 crosses and 255 HF cows, were used. The differences in production traits were tested by a least square means using the GLM procedure in SAS. The milk yield in both lactation (standard 305 days and full lactation) were higher in HF x NRF F1 crosses for approximately 400 kg, but without significance. The differences in production traits (fat and protein (kg and %)) were significant (p<0.001; p<0.05) with higher values for HF x NRF F1 crosses comparing to HF cows, with exception of protein in full lactation. Regarding the fertility traits, HF x NRF F1 crosses had a better conception rate (+1.58 %), a lower number of the insemination per pregnancy (-0.43) and a shorter duration of the service period (-22.2) comparable to HF cows. F1 crosses had better health traits (with except for hoofs problem) comparing to HF cows, they had less cows with mastitis (-11.9 %), ketosis (-0.5 %), retained placenta (-4.8 %) and dislocation of the abomasum (-1.0 %), respectively. Because of the fact that all results were obtained on the basis of data from the first lactation cows, it is necessary to do more analyses of all studied traits in subsequent lactations, in order to get a much clearer insight into the studied issues.

Genetic aspects of common health disorders and measures of fertility in Holstein Friesian dairy cattle

1997 ◽  
Vol 65 (3) ◽  
pp. 353-360 ◽  
Author(s):  
J. E. Pryce ◽  
R. F. Veerkamp ◽  
R. Thompson ◽  
W. G. Hill ◽  
G. Simm
Keyword(s):  
Dairy Cows ◽  
Milk Yield ◽  
Genetic Parameters ◽  
Genetic Correlations ◽  
Economic Importance ◽  
Milk Fever ◽  
Holstein Friesian ◽  
Health Disorders ◽  
Selection For ◽  
Fertility Traits

AbstractThe purpose of this study was to estimate genetic parameters for measures offertility and several health disorders in dairy cows. Data consisted of 33732 records, of which 9163 were on heifers, on 305-day milk yield, health disorders and inseminations. Measures offertility were calculated from calving and insemination dates and included calving interval, days to first service and conception to first service. Health disorders included milk fever, mastitis and lameness. Genetic and phenotypic (co)variances were estimated using restricted maximum likelihood. Heritability estimates for both health disorders and fertility traits were low, ranging from 0·003 to 0·080. All genetic correlations between 305-day milk yield and health and fertility traits, in cows and heifers together, were antagonistic implying that selection for milk yield may have caused a deterioration in health and fertility. The unfavourable correlation between milk yield and health and fertility traits, plus the economic importance of the latter, suggests that future breeding goals should be expanded to include some health disorders and fertility.

scholarly journals Genome-wide associations for fertility traits in Holstein–Friesian dairy cows using data from experimental research herds in four European countries

animal ◽  
2012 ◽  
Vol 6 (8) ◽  
pp. 1206-1215 ◽  
Author(s):  
D.P. Berry ◽  
J.W.M. Bastiaansen ◽  
R.F. Veerkamp ◽  
S. Wijga ◽  
E. Wall ◽  
...  
Keyword(s):  
Dairy Cows ◽  
Experimental Research ◽  
European Countries ◽  
Genome Wide ◽  
Holstein Friesian ◽  
Using Data ◽  
Fertility Traits

scholarly journals Behavioural Responses of Primiparous and Multiparous Dairy Cows to The Milking Process over an Entire Lactation

2015 ◽  
Vol 15 (1) ◽  
pp. 185-195 ◽  
Author(s):  
Andrea Szentléleki ◽  
Krisztina Nagy ◽  
Kálmán Széplaki ◽  
Károly Kékesi ◽  
János Tőzsér
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Dairy Cows ◽  
Dairy Farm ◽  
Production Traits ◽  
Milk Production Traits ◽  
Point Scale ◽  
Behavioural Responses ◽  
Holstein Friesian ◽  
Friesian Cows

Abstract The objective of this study was to examine associations between milking temperament, parity and milk production traits in primiparous and multiparous dairy cows. Twenty-one primiparous and nineteen multiparous Holstein Friesian cows were involved in the investigation on a Hungarian dairy farm. Cows’ stepping behaviour, milk yield and average milking speed were recorded once a month over an entire lactation, during morning milking. Milking temperament was scored by direct human observation on a 5-point-scale (1=very nervous, 5=very quiet) during udder preparation and milking. Multiparous cows showed a little more excitable behaviour at milking than during udder preparation (Mann-Whitney U=14165.00, P=0.032), and they were calmer at premilking preparation than primiparous cows (Mann-Whitney U=14046.00, P=0.001). Milking temperament of multiparous cows during udder preparation was associated with milking speed: nervous cows let down their milk slower (F=9.102, df= 1, P=0.003). Further experiments are needed to repeat the milking temperament test along with sensors measuring heart rate variability of cows in order to better understand the milking behaviour of cows.

scholarly journals The Effect of Rumination Time on Milk Performance and Methane Emission of Dairy Cows Fed Partial Mixed Ration Based on Maize Silage

Animals ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 50
Author(s):  
Robert Mikuła ◽  
Marcin Pszczola ◽  
Katarzyna Rzewuska ◽  
Sebastian Mucha ◽  
Włodzimierz Nowak ◽  
...  
Keyword(s):  
Dairy Cows ◽  
Milk Yield ◽  
Methane Emission ◽  
Methane Production ◽  
Production Traits ◽  
Maize Silage ◽  
Ch4 Production ◽  
Holstein Friesian ◽  
Milk Cows ◽  
Milk Performance

The objective of this study was to determine the effect of the rumination time on milk yield and composition as well as methane emission during lactation in high-yielding dairy cows fed a partial mixed ration based on maize silage without pasture access. A total of 365 high-yielding Polish Holstein-Friesian multiparous dairy cows were included in the study covering 24 to 304 days of lactation. Methane emission, rumination time, and milk production traits were observed for the period of 12 months. Next, the data from the cows were assigned to three groups based on daily rumination time: low rumination up to 412 min/day (up to 25th rumination percentile), medium rumination from 412 to 527 min/day (between the 25th and 75th percentile), and high rumination above 527 min/day (from the 75th percentile). Rumination time had no effect on milk yield, energy-corrected milk yield, or fat and protein-corrected milk yield. High rumination time had an effect on lower fat concentration in milk compared with the medium and low rumination groups. The highest daily CH4 production was noted in low rumination cows, which emitted 1.8% more CH4 than medium rumination cows and 4.2% more than high rumination cows. Rumination time affected daily methane production per kg of milk. Cows from the high rumination group produced 2.9% less CH4 per milk unit compared to medium rumination cows and 4.6% in comparison to low rumination cows. Similar observations were noted for daily CH4 production per ECM unit. In conclusion, a longer rumination time is connected with lower methane emission as well as lower methane production per milk unit in high-yielding dairy cows fed a maize silage-based partial mixed ration without pasture access.

Variation in the Toll-like Receptor 4 (TLR4) gene affects milk traits in dairy cows

2017 ◽  
Vol 84 (4) ◽  
pp. 426-429 ◽  
Author(s):  
Huitong Zhou ◽  
Long Cheng ◽  
Hua Gong ◽  
Seung O. Byun ◽  
Grant R. Edwards ◽  
...  
Keyword(s):  
Dairy Cows ◽  
Milk Fat ◽  
Production Traits ◽  
Toll Like Receptor 4 ◽  
Milk Traits ◽  
Single Nucleotide ◽  
Gene Variation ◽  
Single Stranded Conformational Polymorphism ◽  
Holstein Friesian ◽  
Tlr4 Gene

The objective of this Research Communication was to use polymerase chain reaction-single stranded conformational polymorphism (PCR-SSCP) analysis to investigate a region of the bovine TLR4 gene (TLR4) in pasture-fed New Zealand (NZ) Holstein-Friesian × Jersey (HF × J) cross dairy cows and to determine whether gene variation was associated with milk production traits. Genetic variation was observed, with two variants (A and B) containing a single nucleotide polymorphism (SNP) (c.2021C/T) that was non-synonymous and putatively results in a p.Thr674Ile substitution in the transmembrane/cytoplasmic domain of TLR4. Variant A was associated with higher milk yields, but lower milk fat percentages, whereas B was associated with lower milk yields, but higher fat and protein percentages. Cows of genotype AA produced more milk than AB or BB cows, but the milk produced by AA cows contained less fat than AB or BB cows.

Genetic control of reproduction in dairy cows

2014 ◽  
Vol 26 (1) ◽  
pp. 1 ◽  
Author(s):  
Stephen T. Butler
Keyword(s):  
Dairy Cows ◽  
Milk Production ◽  
Body Condition Score ◽  
Production Traits ◽  
Production Potential ◽  
Physiological Mechanisms ◽  
Genetic Merit ◽  
Genomic Technologies ◽  
Condition Score ◽  
Fertility Traits

The advent of AI has markedly improved the production potential of dairy cows in all systems of production and transformed the dairy industry in many countries. Unfortunately, for many years breeding objectives focused solely on milk production. This resulted in a major decline in genetic merit for fertility traits. In recent years, the underlying physiological mechanisms responsible for this decline have started to be unravelled. It is apparent that poor genetic merit for fertility traits is associated with multiple defects across a range of organs and tissues that are antagonistic to achieving satisfactory fertility performance. The principal defects include excessive mobilisation of body condition score, unfavourable metabolic status, delayed resumption of cyclicity, increased incidence of endometritis, dysfunctional oestrus expression and inadequate luteal phase progesterone concentrations. On a positive note, it is possible to identify sires that combine good milk production traits with good fertility traits. Sire genetic merit for daughter fertility traits is improving rapidly in the dairy breeds, including the Holstein. With advances in animal breeding, especially genomic technologies, to identify superior sires, genetic merit for fertility traits can be improved much more quickly than they initially declined.

134. Relationships between energy balance parameters, genetic indexes and fertility traits in multiparous dairy cows

2021 ◽  
Vol 12 (1) ◽  
pp. 113
Author(s):  
Edward H. Cabezas-Garcia ◽  
Mauricio Civiero ◽  
Alan Gordon ◽  
Conrad P. Ferris
Keyword(s):  
Energy Balance ◽  
Dairy Cows ◽  
Fertility Traits

scholarly journals Changes in Dairy Cow Behavior with and without Assistance at Calving

Agriculture ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 722
Author(s):  
Bethan Cavendish ◽  
John McDonagh ◽  
Georgios Tzimiropoulos ◽  
Kimberley R. Slinger ◽  
Zoë J. Huggett ◽  
...  
Keyword(s):  
Dairy Cows ◽  
Video Surveillance ◽  
Dairy Cow ◽  
Mixed Model ◽  
Linear Mixed Model ◽  
Generalized Linear Mixed Model ◽  
Behavioral Data ◽  
Behavioral Patterns ◽  
Holstein Friesian ◽  
Time Periods

The aim of this study was to characterize calving behavior of dairy cows and to compare the duration and frequency of behaviors for assisted and unassisted dairy cows at calving. Behavioral data from nine hours prior to calving were collected for 35 Holstein-Friesian dairy cows. Cows were continuously monitored under 24 h video surveillance. The behaviors of standing, lying, walking, shuffle, eating, drinking and contractions were recorded for each cow until birth. A generalized linear mixed model was used to assess differences in the duration and frequency of behaviors prior to calving for assisted and unassisted cows. The nine hours prior to calving was assessed in three-hour time periods. The study found that the cows spent a large proportion of their time either lying (0.49) or standing (0.35), with a higher frequency of standing (0.36) and shuffle (0.26) bouts than other behaviors during the study. There were no differences in behavior between assisted and unassisted cows. During the three-hours prior to calving, the duration and bouts of lying, including contractions, were higher than during other time periods. While changes in behavior failed to identify an association with calving assistance, the monitoring of behavioral patterns could be used as an alert to the progress of parturition.

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