scholarly journals Phenotypic characteristics of linear traits of udder and angularity in Holstein-Friesian cows and their correlation with milk yield traits

2020 ◽  
Vol 36 (4) ◽  
pp. 407-416
Author(s):  
Radica Djedovic ◽  
Vladan Bogdanovic ◽  
Dragan Stanojevic ◽  
Hasan Ismael ◽  
Dobrila Jankovic ◽  
...  
Keyword(s):  
Milk Yield ◽  
Phenotypic Variability ◽  
Phenotypic Correlation ◽  
Progeny Testing ◽  
Multiple Traits ◽  
Linear Type ◽  
Data Set ◽  
Holstein Friesian ◽  
Type Traits ◽  
Important Trait

Data set including 10860 primiparous Holstein-Friesian breed cows first calved in the period from 2011 to 2015, was used in determining phenotypic variability and correlation between the traits of milk yield and linearly estimated traits of udder and angularity. The average values obtained for type traits (angularity, fore udder attachment, front teats placement, teats length, udder depth and rear udder height) were 6.47; 5.74; 4.96; 5.20; 5.99 and 6.25, respectively. The values obtained for phenotypic correlations between linear type traits and traits of milk yield ranged from -0.042 (udder depth and milk yield) to 0.335 (fore udder attachment and protein yield). Positive phenotypic correlation (0.293) was recorded also between fore udder attachment and milk yield which is deemed the most important trait of milk yield while the lowest correlation between milk yields was determined in relation to udder depth (-0.033). The results obtained indicate a possibility of applying direct and indirect multiple traits selection which should be conducted within a national progeny-testing programme on Holstein-Friesian bulls by using the method of selection indexes.

scholarly journals Genetic parameters of the type traits of Holstein-Friesian primiparous dairy cows

Genetika ◽  
2021 ◽  
Vol 53 (2) ◽  
pp. 533-544
Author(s):  
Dobrila Jankovic ◽  
Bozidarka Markovic ◽  
Radica Djedovic ◽  
Snezana Trivunovic ◽  
Momcilo Saran
Keyword(s):  
Genetic Variability ◽  
Phenotypic Variability ◽  
Additive Genetic Variance ◽  
Breeding Value ◽  
Farm Size ◽  
Data Set ◽  
Holstein Friesian ◽  
Type Traits ◽  
Estimation Of Variance ◽  
Friesian Cows

The aim of this study was to determine the level and variability of type traits in primiparous Holstein-Friesian cows, as well as to assess the additive genetic variance of type traits and heritability coefficients. The research was conducted on a data set of linearly evaluated primiparous Holstein-Friesian cows, which is ceded by the Main dairy cattle breed organization in the Province of Vojvodina, which is a unit of the Department of Animal Science, at the Faculty of Agriculture in Novi Sad. Data of 24226 primiparous Holstein-Friesian cows, refer to the period 2012-2015, were analysed. The phenotypic variability of the type traits, as well as effects of systemic factors affecting these traits, were analyzed using standard statistical methods in the Statistica software 13.2, and the general linear model (GLM). A Statistically highly significant effect for most of the type traits had the farm size, interaction of the year and the season of evaluation, age at linear evaluation, lactation stage and a genetic group formed by the year and country of bull/sires birth. The total type traits score (final score), which represents an evaluation of the overall primiparous cow exterior, is calculated for the 24226 linearly evaluated primiparous cows. Estimation of variance components and heritability coefficient calculation is done in the software package WOMBAT. Heritability coefficient values for the primiparous cow's type traits in the Province of Vojvodina were low to middle, ranged from 0.08 for the rear legs - side view up to 0.38 for the stature. Due to the fact that the value of the heritability coefficient depends on the variability of the traits and previous selection, lower heritability may be a consequence of the low genetic variability, or, a higher degree of variability which is a consequence of the effect of the systematic factors. Heritability coefficients indicate a genetic variability of the type traits, and its evaluation is important for the breeding value estimation for the type traits.

scholarly journals Estimation of heritability and genetic correlations between milk yield and linear type traits in primiparous Holstein-Friesian cows

2021 ◽  
Vol 50 ◽  
Author(s):  
Hasan Ismael ◽  
Dobrila Janković ◽  
Dragan Stanojević ◽  
Vladan Bogdanović ◽  
Snežana Trivunović ◽  
...  
Keyword(s):  
Milk Yield ◽  
Genetic Correlations ◽  
Linear Type ◽  
Holstein Friesian ◽  
Type Traits ◽  
Friesian Cows

scholarly journals Genetic and phenotypic parameters for individual cow somatic cell counts in Zimbabwean Holstein-Friesian cattle

2001 ◽  
Vol 44 (2) ◽  
pp. 129-138
Author(s):  
E. V. Imbayarwo-Chikosi ◽  
S. M. Makuza ◽  
C. B. A. Wollny ◽  
J. W. Banda
Keyword(s):  
Animal Model ◽  
Phenotypic Correlation ◽  
Production Traits ◽  
Data Set ◽  
Cell Counts ◽  
Holstein Friesian ◽  
Type Traits ◽  
Genetic And Phenotypic Correlations ◽  
Friesian Cattle ◽  
Average Individual

Abstract. Genetic and phenotypic parameters for lactation average individual cow SCC in Holstein cattle were estimated. Records from the Zimbabwe Dairy Services Association included a total of 7912 lactation records, from which were 1453 first lactation, 2211 second lactation and 4248 third and later lactation records for the period 1994 to 1998. SCC were transformed through a base 2 logarithm. Genetic parameters were estimated with the AIREML Programme. A univariate mixed animal model was used to estimate heritabilities and repeatabilities. The heritability estimates for log2SCC were 0.10, 0.12 and 0.14 for the respective first, second, third and subsequent lactations. Estimate of repeatability for log2SCC was 0.17. Genetic and phenotypic correlations were estimated with a multivariate mixed animal model. Genetic correlation estimates between log2SCC and the production traits were low to medium and negative (−0.05 to −0.55) whilst the phenotypic correlation estimates were low and negative (−0.04 to −0.22). As individual cow SCC data collection continues in Zimbabwe, there are opportunities for genetic re-evaluation of this trait with a larger data set. This could possibly include udder type traits, most of which have been reported to be associated with SCC.

Relationships between bull proofs for lifespan (LS) in the United Kingdom (UK) and various countries

2000 ◽  
Vol 2000 ◽  
pp. 111-111
Author(s):  
C. M. Lindberg ◽  
G. J. T. Swanson ◽  
R. A. Mrode
Keyword(s):  
United Kingdom ◽  
Milk Yield ◽  
Bivariate Analysis ◽  
Replacement Rate ◽  
Linear Type ◽  
The United Kingdom ◽  
Type Traits ◽  
Important Trait ◽  
Genetic Evaluations ◽  
Indirect Information

Longevity or lifespan has proved to be an important trait when it comes to profitability for the dairy farmer. Selecting for longer herdlife not only reduces the replacement rate and thereby the replacement cost, but also gives the opportunity to cull for low production (as opposed to health problems) and increases the milk yield through a higher proportion of mature cows in the herd. Predicted Transmitting Abilities (PTA's) for LS are calculated from a bivariate analysis including indirect information in the form of a phenotypic index of four linear type traits (fore udder attachment, foot angle, udder depth and teat length) closely related to longevity, and from direct lactation information, i.e. survival measured in number of lactations corrected for milk yield (Brotherstone et al., 1998). Genetic evaluations for LS were introduced in the United Kingdom (UK) in August 1998 (Mrode et al., 1999).

Dairy herd life in relation to linear type traits and production 1. Phenotypic and genetic analyses in pedigree type classified herds

1991 ◽  
Vol 53 (3) ◽  
pp. 279-287 ◽  
Author(s):  
S. Brotherstone ◽  
W. G. Hill
Keyword(s):  
Milk Yield ◽  
Milk Fat ◽  
Genetic Correlations ◽  
Dairy Herd ◽  
Production Traits ◽  
Linear Type ◽  
The United Kingdom ◽  
Holstein Friesian ◽  
Type Traits ◽  
Total Type

AbstractThe relation between survival to complete lactations 2, 3 and 4 and both linear type and production traits of pedigree Holstein-Friesian dairy cattle in the United Kingdom was analysed. There were records on 23 071 pedigree animals which were themselves type classified as heifers. The linear and quadratic phenotypic regressions of survival on most type traits were significant, even with yield fitted as a covariate. Phenotypic regressions of survival on milk, fat and protein yield were significantly positive, but that on protein content significantly negative. Phenotypic correlations with survival were under 0·1 for the linear traits, 0·16 for a subjective total type score, and 0·14 for milk yield. Genetic correlations between survival and type traits, estimated by multivariate restricted maximum likelihood, were as high as 0·4 for several traits of the udder and teats and for total score, and higher than for milk yield or composition. Regressions of survival on estimated sire transmitting abilities gave rather lower estimates of genetic correlations, except for total score. The results indicate that in these pedigree and classifying herds the total score is a culling criterion in its own right.

The relationship between fertility, rump and other type traits in Holstein Friesian cows

2005 ◽  
Vol 2005 ◽  
pp. 53-53
Author(s):  
E. Wall ◽  
I. M. S. White ◽  
M. P. Coffey ◽  
S. Brotherstone
Keyword(s):  
Significant Relationship ◽  
Phenotypic Correlation ◽  
Popular Belief ◽  
Breeding Values ◽  
Holstein Friesian ◽  
Type Traits ◽  
Cattle Breeders ◽  
The Relationship ◽  
Fertility Traits ◽  
Friesian Cows

Cattle breeders, farmers and vets believe that the decline in fertility seen in recent years can be partially attributed to changes in rump angle with selection being for more angular cows. This suggests that animals with pin bones that sit above the hip bones (high rump angle) will have poorer fertility. Few studies have shown a significant relationship between fertility and rump traits. This study investigates the popular belief that high rump angle equates to poor fertility by examining the genetic and phenotypic correlation between rump angle and fertility traits. The relationship between rump angle and fertility was also examined to see if there was an intermediate optimum or threshold of rump angle for good/bad fertility. The correlation of other type traits (udder and composite traits) with fertility was also examined to see if they had potential to add information to the estimation of fertility breeding values.

Relationships among udder type traits and milk yield of Iranian Holstein-Friesian cattle

2003 ◽  
Vol 2003 ◽  
pp. 141-141
Author(s):  
M. R. Sanjabi ◽  
M. G. Govindaiah ◽  
M. M. Moeini
Keyword(s):  
Milk Production ◽  
Milk Yield ◽  
Genetic Correlations ◽  
Holstein Friesian ◽  
Type Traits ◽  
High Production ◽  
Friesian Cattle

Correlation among type traits and with milk production has been investigated by Brotherstone (1994) and Misztal et al (1992). One of the primary reasons for collecting and utilizing information on type traits is to aid breeders in selecting profitable functional cows for high production and suitable herd life. The objectives of this study were to estimate phenotypic and genetic correlations among milk production and with udder traits.

Effect of lameness on the daily milk yield of Holstein-Friesian dairy cows

2007 ◽  
Vol 2007 ◽  
pp. 98-98
Author(s):  
O. M. Onyiro ◽  
S. Brotherstone
Keyword(s):  
Dairy Cows ◽  
Milk Yield ◽  
Dairy Farmers ◽  
Linear Type ◽  
Major Health Problem ◽  
Dairy Management ◽  
Economic Production ◽  
Holstein Friesian ◽  
Daily Milk Yield ◽  
Daily Milk

As a major health problem facing dairy farmers worldwide with substantial economic, production and welfare consequences, lameness has attracted much attention over the last two to three decades (Boelling, 1999). Lameness as a linear type trait is measured by locomotion scoring as there is a high genetic correlation between lameness and locomotion score. Studies have included locomotion (as a predictor of lameness) and have associated lameness with no effect, an increase and sometimes a decrease in milk production of cows. Several reasons have been given for these differences and the need still arises for estimates of the effect of lameness on milk yield in herds with current dairy management. The objective of this study was to quantify the effect of lameness on the daily milk yield (DMY) of dairy cows.

scholarly journals Analyses of genetic relationships between linear type traits, fat-to-protein ratio, milk production traits, and somatic cell count in first-parity Czech Holstein cows

2014 ◽  
Vol 59 (No. 12) ◽  
pp. 539-547 ◽  
Author(s):  
V. Zink ◽  
L. Zavadilová ◽  
J. Lassen ◽  
M. Štípková ◽  
M. Vacek ◽  
...  
Keyword(s):  
Somatic Cell ◽  
Milk Yield ◽  
Somatic Cell Score ◽  
Protein Yield ◽  
Production Traits ◽  
Linear Type ◽  
Protein Percentage ◽  
Phenotypic Correlations ◽  
Type Traits ◽  
Fat Yield

Genetic and phenotypic correlations between production traits, selected linear type traits, and somatic cell score were estimated. The results could be useful for breeding programs involving Czech Holstein dairy cows or other populations. A series of bivariate analyses was applied whereby (co)variance components were estimated using average information (AI-REML) implemented via the DMU statistical package. Chosen phenotypic data included average somatic cell score per a 305-day standard first lactation as well as the production traits milk yield, fat yield, protein yield, fat percentage, and protein percentage per the standard first lactation. Fifteen classified linear type traits were added, as they were measured at first lactation in the Czech Holstein population. All phenotypic data were collected within the progeny testing program of the Czech-Moravian Breeders Corporation from 2005 to 2009. The number of animals for each linear type trait was 59 454, except for locomotion, for which 53 424 animals were recorded. The numbers of animals with records of milk production data were 43 992 for milk yield, fat percentage, protein percentage, and fat-to-protein percentage ratio and 43 978 for fat yield and protein yield. In total, 27 098 somatic cell score records were available. The strongest positive genetic correlation between production traits and linear type traits was estimated between udder width and fat yield (0.51 ± 0.04), while the strongest negative correlation estimated was between body condition score and fat yield (−0.45 ± 0.03). Other estimated correlations were between those two extremes but generally they were close to zero or positive. The strongest negative phenotypic correlations were estimated between udder depth and milk yield and protein yield (both −0.17), while the strongest positive phenotypic correlations were estimated between milk yield, protein yield, and udder width (both 0.32).  

Sign in / Sign up

Export Citation Format

Share Document