scholarly journals Inheritance of some fertility traits in three successive generations of Holstein-Friesian cattle

2005 ◽  
Vol 48 (1) ◽  
pp. 5-11
Author(s):  
R. Lazarevic ◽  
B. Miscevic
Keyword(s):  
Reproductive Traits ◽  
Service Period ◽  
Holstein Friesian ◽  
Successive Generations ◽  
Fertility Traits ◽  
Friesian Cattle ◽  
Duration Of Pregnancy

Abstract. The aim of the paper was to establish reproductive traits and their heritability during the three successive generations of Holstein-Friesian cattle. Research was conducted on the duration of pregnancy, service period and fertility intensity. In each generation there were 135 first calved cows. Service period and fertility intensity refers to the following calving. Significant differences were established (P < 0.05) regarding duration of pregnancy between I and II generation. Significant (P < 0.05) influence of season on duration of pregnancy and service period was established in I generation (1991), on duration of service period and fertility intensity in II generation (1996) and on duration of pregnancy and service period in III generation (2000). Season effect (summer) was established for all traits of fertility in II generation (P < 0.05). The season (spring) had influence on duration of pregnancy (P < 0.05) and summer had an influence on duration of service period and fertility intensity, and winter effected the duration of service period (P < 0.05) in III generation. Values of heritability coefficients are pretty low for all generations. Considerably greater values for heritability were established for service period and intensity of fertility of cows per generations.

scholarly journals Investigation of the effect of certain paragenetic factors on fertility traits of bull dams of Simmental breed

2005 ◽  
Vol 21 (3-4) ◽  
pp. 35-41 ◽  
Author(s):  
Vlada Pantelic ◽  
Zlatko Skalicki ◽  
D. Latinovic ◽  
Milan Petrovic ◽  
Denis Kucevic
Keyword(s):  
Least Squares ◽  
Reproductive Traits ◽  
Objective Evaluation ◽  
Agricultural Producers ◽  
Mean Values ◽  
Service Period ◽  
General Average ◽  
The Republic ◽  
Fertility Traits ◽  
Duration Of Pregnancy

Investigation included bull dams of Simmental breed selected on farms of agricultural producers on the territory of the Republic of Serbia. Method of Least Squares - LSMLMW (Harvey 1987) was used for analysis of the effect of region and order of lactation on reproductive traits. Obtained results indicate the justification for investigation of paragenetic factors, since the knowledge of their effect can contribute to more objective evaluation of random effects. Regions had highly significant effect (P<0,01) on age at first conception, duration of service period and interval between calvings whereas no significant effect on duration of pregnancy was registered (p>0.05). The effect of region of breeding many factors are included and most important one is nutrition. Order of lactation as second factor investigated in this research had no effect on any of the fertility traits (p>0.05). General average of mean values of least squares for fertility was: for age at first conception 517.61 days, duration of pregnancy 285.51 days, duration of service period 108.98 days, interval between calving 395.34 days.

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&lt;0.001; p&lt;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.

scholarly journals Reproductive characteristics of Simmental breed bull dams

2005 ◽  
Vol 21 (1-2) ◽  
pp. 13-20 ◽  
Author(s):  
Vlada Pantelic ◽  
Zlatko Skalicki ◽  
Milan Petrovic ◽  
Denis Kucevic
Keyword(s):  
Reproductive Traits ◽  
Dairy Production ◽  
Method Of Least Squares ◽  
Agricultural Producers ◽  
Mean Values ◽  
Service Period ◽  
General Average ◽  
Cattle Reproduction ◽  
Significant Production ◽  
Duration Of Pregnancy

Cattle reproduction is most significant production phase because in this phase heads of cattle for maintaining of the herd are provided, as well as for dairy production and fattening - production of meat. The effect of year and season of calving on age at first conception, duration of pregnancy duration of service period, interval between calving, etc. is investigated in the paper. Bull dams of Simmental breed selected on farms of individual agricultural producers were investigated. The method of Least Squares LSMLMW(Harvey 1987) was used for analysis of the effect of year and season of calving on reproductive traits. Year of calving had significant effect on duration of service period and interval between calving (p<0.05), while season influenced significantly only the duration of service period (p<0.05). Mean values of the general average were following: for age at first conception - 517.61 days; duration of pregnancy 285.51 days; duration of service period 108.98 days; duration of interval between calving 395.34 days.

scholarly journals Phenotypic correlations of productive and reproductive traits of Simmental cows

2007 ◽  
Vol 23 (3-4) ◽  
pp. 11-17
Author(s):  
Vlada Pantelic ◽  
Z. Skalicki ◽  
M.M. Petrovic ◽  
S. Aleksic ◽  
B. Miscevic ◽  
...  
Keyword(s):  
Milk Fat ◽  
Reproductive Traits ◽  
Phenotypic Correlation ◽  
Cattle Breeding ◽  
Phenotypic Correlations ◽  
Service Period ◽  
Calving Season ◽  
The Republic ◽  
One Year ◽  
Fertility Traits

Research included 3.461 first calving Simmental cows in control, with lactations concluded within one year. All first calving cows were reared by private/individual farmers on the territory of the Republic of Serbia. Phenotypic correlations between following milk and fertility traits have been investigated: duration of lactation DL, milk yield MY, milk fat content MFC, milk fat yield MFY, yield of 4% FCM, age at first calving AFC and duration of service period DSP. Results of the investigation of phenotypic correlations are obtained using mixed models LSMLMW (Harvey 1990). This method enables optimal consideration of numerous effects on investigated traits (bull sires, region, calving season, and calving year). Phenotypic correlation of traits in cattle breeding relates to presence of mutual positive or negative covariance which is result of the effect of genetic and factors of the environment. Information on phenotypic correlations between milk and fertility traits can be of great importance in selection of cows, since it provides possibility to choose/select heads based on several traits at the same time. .

Effects of a novel missense polymorphism within the SIGLEC5 gene on fertility traits in Holstein‐Friesian cattle

2019 ◽  
Vol 54 (9) ◽  
pp. 1163-1168
Author(s):  
Paulina Puckowska ◽  
Alicja Borowska ◽  
Tomasz Szwaczkowski ◽  
Kamil Oleński ◽  
Stanislaw Kamiński
Keyword(s):  
Holstein Friesian ◽  
Fertility Traits ◽  
Friesian Cattle

Genetic analysis of fertility traits in Jersey crossbred cows

2017 ◽  
Author(s):  
Anshuman Kumar ◽  
Ajoy Mandal ◽  
A. Gupta ◽  
M. Karunakaran ◽  
S. Das ◽  
...  
Keyword(s):  
Management Practices ◽  
Genetic Relationships ◽  
Random Effect ◽  
Reproductive Traits ◽  
Calving Interval ◽  
Genetic Progress ◽  
Factors Affecting ◽  
Service Period ◽  
Parity Number ◽  
Fertility Traits

The present study was carried out to evaluate the genetic and non-genetic factors affecting fertility traits viz., number of service per conception (NSPC), service period (SP) and calving interval (CI) and genetic and phenotypic parameters of these traits in Jersey crossbred cattle, maintained at Eastern Regional Station of ICAR-National Dairy Research Institute, Kalyani, West Bengal over a period of 39 years (1976-2014). The least squares means for the NSPC, SP and CI were 1.73±0.08 inseminations, 156.37±7.47 days and 458.32±9.56 days respectively. The study revealed that all the traits were decreasing significantly with parity number. Season was important in determining service period, whereas period of calving influenced calving interval in this study. NSPC, SP and CI did not differ significantly among different genetic groups; but, half-breds of Jersey and Tharparkar (½ Jersey-½ Tharparkar) showed comparatively lower NSPC, SP and CI than half-breds of Jersey and Red Sindhi and other crosses in this study. The random effect of sire was highly significant on all the fertility traits considered in this study. Heritability estimates for NSPC, SP and CI were 0.08±0.06, 0.18±0.08 and 0.16±0.08 respectively. All the three analyzed traits had close genetic relationships. Low to moderate heritability of reproductive traits indicates slow genetic progress through selection and further improvement in reproductive performance can be made either by better management practices or including large number of polymorphic markers associated with fertility in the population to assist animal selection

scholarly journals The effect of paragenetic factors on reproductive traits of simmental cows

2007 ◽  
Vol 23 (5-6-2) ◽  
pp. 1-8
Author(s):  
M.D. Petrovic ◽  
Z. Skalicki ◽  
V. Bogdanovic ◽  
M.M. Petrovic
Keyword(s):  
Birth Weight ◽  
Reproductive Traits ◽  
Gestation Length ◽  
Gender Interaction ◽  
Regression Effect ◽  
Service Period ◽  
Calving Season ◽  
Fertility Traits ◽  
Effect Of Age ◽  
Birth Type

The examination was made on the effect of systematic factors (parturition group, calving season, birth type, calf gender, and birth type-calf gender interaction) and age at first conception on the expression of reproductive traits (gestation length, service period, fertility intensity and calf birth weight) in 143 Simmental cows. The overall mean (?) for gestation length, service period, intercalving period and calf birth weight was 284.14 days, 153.82 days, 416.92 days and 35.40 kg, respectively. The parturition group effect on all fertility traits was highly significant (P<0.01). The calving season statistically significantly (P<0.05) affected the intercalving period and calf birth weight. Birth type induced very significantly longer gestation (P<0.01) and higher calf birth weight in singles (P<0.01) and significantly longer service period in twins (P<0.05). Calf gender had a very significant effect (P<0.01) only on calf birth weight, and the interaction between birth type and calf gender significantly affected gestation duration only (P<0.05). The regression effect of age at first conception on all fertility traits was not significant (P>0.05).

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