scholarly journals Genetic parameters of incidence of dytsocia and number of stillbirths in population of Holstein-Friesian cows in Vojvodina

2011 ◽  
Vol 27 (3) ◽  
pp. 1051-1058
Author(s):  
S. Trivunovic ◽  
D. Ivanovic ◽  
D. Kucevic ◽  
V. Pantelic ◽  
J. Korora ◽  
...  
Keyword(s):  
Genetic Parameters ◽  
Cattle Breed ◽  
Control Program ◽  
Study Data ◽  
Production Traits ◽  
Still Births ◽  
Holstein Friesian ◽  
Breeding Goals ◽  
Friesian Cattle ◽  
Friesian Cows

For today?s trends in contemporary production of milk and meat, selection only for production traits is completely unacceptable, since it can contribute to numerous metabolic disorders and shortening of the production life of the animal. Contemporary breeding goals and programs are directed towards, first of all, reaching and maintaining of the optimal balance between production and functional traits without compromising the health and ethological characteristics of animals. Regardless of the breeding objective, i.e. defined program, fertility traits and fitness properties, that is the properties relating to resistance to diseases, must be included. In many countries, problems with calving difficulties and increase of mortality rate of calves in Black and White breeds occurred with the increase of share of Holstein genes in the population of Friesian cattle. Objective of this study is to present the data on number of difficult parities (calving) and number of still born claves (still births) in population of Holstein-Friesian cows in Vojvodina, and to calculate and present genetic parameters for mentioned traits. In this study, data was used on the incidence of difficult calving and number of still born claves (still births) obtained from the calving register for all producers included in the animal control program, carried out by the Faculty of Agriculture from Novi Sad, Animal Science Department, as Main breeding organization for Holstein-Friesian cattle population in Vojvodina. Data refer to years 2008 and 2009, with total of 35000 calvings. Based on calculated parameters, factors were defined which influence the expression of mentioned traits, with major impact on the economical efficiency of the milk production. It is expected that, in spite of low heritability level of 0.149 for dystocia and 0.160 for number of stillbirths, by applying the accurate methods of their genetic assessment, studied traits can be included in the breeding goals of Holstein-Friesian cattle breed in Vojvodina.

scholarly journals Genetic Polymorphism of SCD1 Gene of Holstein-Friesian Cows in Indonesia

2019 ◽  
Vol 24 (2) ◽  
pp. 56
Author(s):  
Ari Sulistyo Wulandari ◽  
HD Rahayu ◽  
SD Volkandari ◽  
N Herlina ◽  
S Anwar ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Genetic Polymorphism ◽  
Breeding Strategy ◽  
Holstein Friesian ◽  
Pcr Rflp ◽  
Hardy Weinberg Equilibrium ◽  
Molecular Selection ◽  
Friesian Cattle ◽  
Selection Of ◽  
Friesian Cows

<p class="abstrak2">Stearoyl-Coenzyme A desaturase 1 (SCD1) belongs to the fatty acid family of desaturases. In lactating ruminants, the SCD1 protein is highly expressed in the mammary gland and is relevant for the fatty acid composition of milk and dairy products. Polymorphism of SCD1 gene in Holstein-Friesian (HF) cows could be used as a basis of molecular selection of cattle in order to increase their productivity. The aim of this study was to investigate the polymorphism of SCD1 gene of Holstein-Friesian cows in Indonesia. A total of 162 blood samples of HF cows were collected from four different locations i.e. Bogor, Sukabumi, Tasikmalaya and Enrekang districts. Genotyping of SCD1 gene used PCR-RFLP method with NcoI restriction enzyme. The result showed that three genotypes (AA, AV and VV) and two alleles (A and V) have successfully found and polymorphic. A allele was dominant in all populations (0.63) and in Hardy Weinberg Equilibrium. The highest A allele was found in Sukabumi (0.78) and the lowest was in Bogor (0.55). Heterozigosity observed and expected reached 0.471 and 0.470, respectively. In conclusion, genetic polymorphism was found in all population with dominant of A allele. This finding can be used as a early genetic information of Holstein-Friesian cattle in Indonesia and to build breeding strategy for improving of productivity especially improving of healthy fat milk. </p><p class="abstrak2"><span><br /></span></p>

scholarly journals Genetic parameters of test-day somatic cell scores for the first three lactations of Polish Holstein-Friesian cattle

2011 ◽  
Vol 56 (No. 9) ◽  
pp. 381-389 ◽  
Author(s):  
K. Rzewuska ◽  
J. Jamrozik ◽  
A. Żarnecki ◽  
T. Strabel
Keyword(s):  
Somatic Cell ◽  
Bayesian Methods ◽  
Genetic Parameters ◽  
Genetic Correlations ◽  
Large Data ◽  
Somatic Cell Score ◽  
Data Set ◽  
Holstein Friesian ◽  
Covariance Components ◽  
Friesian Cattle

&nbsp;Genetic parameters for somatic cell score in the first three lactations of Polish Holstein-Friesian cattle were estimated. A multiple-lactation model was applied with random herd-test-day effect, fixed regressions for herd-year and age-season of calving, and random regressions for the additive genetic and permanent environmental effects. The large data set was used that included over one million test-day records and more than 58 000 cows. Estimates of covariance components and genetic parameters were obtained by Bayesian methods using the Gibbs sampler. Average daily heritabilities of somatic cell score (SCS) in the first three lactations were 0.11, 0.12 and 0.14 for the first, second and third lactation, respectively. Estimates of daily heritabilities were rather independent of days in milk (DIM), with no serious abnormalities at the beginning or the end of lactation. Average genetic correlations between SCS on the same DIM were 0.68, 0.62 and 0.70 for first and second, first and third, and second and third parities, respectively, and did not exceed 0.77. The low level of heritability estimates and relatively low genetic correlations between lactations would suggest that selection based on the first lactation only could limit a response in mastitis resistance for later lactations.

scholarly journals L-selectin gene polymorphism and its association with clinical mastitis, somatic cell score, and milk production in Polish Holstein-Friesian cattle

2018 ◽  
Vol 63 (No. 7) ◽  
pp. 256-262 ◽  
Author(s):  
M. Dusza ◽  
J. Pokorska ◽  
J. Makulska ◽  
D. Kulaj ◽  
M. Cupial
Keyword(s):  
Somatic Cell ◽  
Milk Production ◽  
Milk Fat ◽  
Bacterial Infections ◽  
Clinical Mastitis ◽  
Somatic Cell Score ◽  
Production Traits ◽  
Milk Production Traits ◽  
Holstein Friesian ◽  
Friesian Cows

Bovine mastitis is a widespread disease of the mammary gland, highly contributing to the increase in veterinary costs in dairy industry. In the present study, the genetic polymorphism within bovine L-selectin gene was analysed and its impact on clinical mastitis occurrence, somatic cell score (SCS), and milk production traits in Polish Holstein-Friesian cows was examined. Polymorphism within L-selectin gene, molecule responsible for neutrophil attachment to endothelium, might have a potential role in immune response to bacterial infections and udder health. Two hundred and six Polish Holstein-Friesian cows were genotyped by polymerase chain reaction-restriction fragment length polymorphism method. Two single nucleotide polymorphisms mutations within the coding sequence of L-selectin gene were identified (c.165G&gt;A and c.567C&gt;T). The effect of c.165G&gt;A and c.567C&gt;T mutations on SCS was highly significant (P = 0.0019 and P = 0.0003, respectively). Strong associations (P ≤ 0.0001) were also observed between L-selectin polymorphism and milk production traits (milk yield, milk fat percentage, and milk protein percentage). However, the polymorphism in the analysed gene had no influence on the resistance or susceptibility of cows to clinical mastitis (only the tendency toward significance, P = 0.06 for c.567C&gt;T mutation was found). Potential exploitation of the information on the identified associations in genetic selection needs to confirm the obtained results in further investigations.

scholarly journals Insulin responses to acute glucose infusions in Busa and Holstein-Friesian cattle breed during the peripartum period: Comparative study

2013 ◽  
Vol 63 (4) ◽  
pp. 373-384 ◽  
Author(s):  
R. Prodanovic ◽  
Danijela Kirovski ◽  
I. Vujanac ◽  
M. Djuric ◽  
G. Koricanac ◽  
...  
Keyword(s):  
Comparative Study ◽  
Cattle Breed ◽  
Holstein Friesian ◽  
Peripartum Period ◽  
Insulin Responses ◽  
Friesian Cattle
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