Possible relationship between IGF-1/SnaBI genotypes and milk yield of Holstein-Friesian cows

2019 ◽  
Vol 15 (4) ◽  
pp. 35-41
Author(s):  
Małgorzata WASIELEWSKA ◽  
Iwona SZATKOWSKA
Keyword(s):  
Milk Yield ◽  
Quality Characteristics ◽  
Production Traits ◽  
Performance Parameters ◽  
Milk Traits ◽  
White Variety ◽  
Black And White ◽  
Holstein Friesian ◽  
Milk Performance ◽  
Friesian Cows

The correlation between polymorphisms in the IGF-1 gene and production traits in beef cattle is well known. The effect of insulin-like growth factor on the value of milk traits is not yet adequately understood. The aim of the study was to attempt to describe the effect of IGF-1/SnaBI substitution on selected milk performance parameters of the Black-and-White variety of Holstein-Friesian cows. Three genotypes were identified: CC, CT and TT. The results showed a correlation between IGF-1/SnaBI genotypes and milk yield (highest for CC homozygotes and lowest for CT heterozygotes). No relationship could be established between the genotype and the quality characteristics of milk.

scholarly journals Temperament of Holstein Friesian cows in milking parlour and its relation to milk production

2008 ◽  
Vol 56 (1) ◽  
pp. 201-208 ◽  
Author(s):  
Andrea Szentléleki ◽  
Jeremy Hervé ◽  
Ferenc Pajor ◽  
Daniel Falta ◽  
János Tőzsér
Keyword(s):  
Milk Production ◽  
Milk Yield ◽  
Correlation Coefficients ◽  
Production Traits ◽  
Milk Production Traits ◽  
Point Scale ◽  
Milk Traits ◽  
Milk Flow ◽  
Holstein Friesian ◽  
Friesian Cows

The aim of this study was to evaluate the change of temperament of Holstein cows scored before and during milking during the entire lactation and to calculate correlation between temperament measured in the two moments as well as milk production traits and temperament. Observations were carried out on 17 primiparous Holstein Friesian cows starting their lactation within 85 days. Measurements of temperament and milk production traits were taken once in each month of the lactation, during the morning milking, in a milking parlour. Temperament was assessed in a 5-point scale during udder preparation and milking procedure (1: very nervous, 5: very quiet). Data of milk yield and milk flow were collected individually on each test day morning. Results showed changes during the lactation in temperament of cows scored directly before milking (P < 0.01), however, temperament during milking did not alter with months (P > 0.10). By correlation coefficients, behaviour assessed in the two moments cannot be regarded as the same. In addition loose, significant relations were found only between milk traits and temperament before milking.

scholarly journals The effect of the farm size on milk traits of cows

2011 ◽  
Vol 27 (3) ◽  
pp. 951-958 ◽  
Author(s):  
D. Kucevic ◽  
S. Trivunovic ◽  
M. Radinovic ◽  
M. Plavsic ◽  
Z. Skalicki ◽  
...  
Keyword(s):  
Milk Yield ◽  
Milk Fat ◽  
Dairy Farm ◽  
Farm Size ◽  
Small Farms ◽  
Milk Traits ◽  
Holstein Friesian ◽  
Milk Performance ◽  
Fat Yield ◽  
Large Farms

Objective of this study was to analyze the effect of the dairy farm on milk traits of cows in Vojvodina. The research was carried out on small farms with 10 to 20 cows, medium farms with 20 to 50 cows, and large farms with over 50 dairy cows. The study included registered animals of Simmental (SM) and Holstein-Friesian breed (HF; including Red Holstein) in the first lactation for traits of milk yield and yield and content of milk fat. Total of 1323 first lactations were analyzed. The average milk yield (both breeds) in the first lactation of 305 days was 6295 kg of milk with 234,3 kg of milk fat and average milk fat content of 3,74%. Milk performance of cows varied significantly (CV=22,9% and SD=1447,8), as well as milk fat yield (CV=21,6% and SD=50,8). Large farms produced in average 6534 kg of milk, medium farms 6347kg and small farms 4717kg. Size of the farm exhibited significantly high effect on all observed traits, and the tendency was that farms with higher number of animals realize also higher average of production. Farm management and various breeding-zootechnical conditions present on farms had significant effect on milk performance of cows.

scholarly journals A Comprehensive Analysis of Runs of Homozygosity of Eleven Cattle Breeds Representing Different Production Types

Animals ◽  
2019 ◽  
Vol 9 (12) ◽  
pp. 1024 ◽  
Author(s):  
Tomasz Szmatoła ◽  
Artur Gurgul ◽  
Igor Jasielczuk ◽  
Tomasz Ząbek ◽  
Katarzyna Ropka-Molik ◽  
...  
Keyword(s):  
High Frequency ◽  
Production Traits ◽  
Runs Of Homozygosity ◽  
White Variety ◽  
Black And White ◽  
Cattle Breeds ◽  
Hereford Cattle ◽  
Holstein Friesian ◽  
Genomic Inbreeding ◽  
The Impact

In the presented research, BovineSNP50 microarrays (Illumina) were applied to determine runs of homozygosity in the genomes of 11 cattle breeds maintained in Poland. These cattle breeds represent three basic utility types: milk, meat and dual purpose. Analysis of runs of homozygosity allowed the evaluation of the level of autozygosity within each breed in order to calculate the genomic inbreeding coefficient (FROH), as well as to identify regions of the genome with a high frequency of ROH occurrence, which may reflect traces of directional selectin left in their genomes. Visible differences in the length and distribution of runs of homozygosity in the genomes of the analyzed cattle breeds have been observed. The highest mean number and mean sums of lengths of runs of homozygosity were characteristic for Hereford cattle and intermediate for the Holstein-Friesian Black-and-White variety, Holstein-Friesian Red-and-White variety, Simmental, Limousin, Montbeliarde and Charolais breeds. However, lower values were observed for cattle of conserved breeds. Moreover, the selected livestock differed in the level of inbreeding estimated using the FROH coefficient. In regions of the genome with a high frequency of ROH occurrence, which may reflect the impact of directional selection, a number of genes were observed that can be potentially related to the production traits which are under selection pressure for specific production types. The most important detected genes were GHR, MSTN, DGAT1, FABP4, and TRH, with a known influence on the milk and meat traits of the studied cattle breeds.

CATHL2 gene polymorphism in relation to production traits in Holstein-Friesian cows

2019 ◽  
Vol 15 (2) ◽  
pp. 23-30
Author(s):  
Sonia Hiller ◽  
Inga Kowalewska-Łuczak ◽  
Ewa Czerniawska-Piątkowska
Keyword(s):  
Statistical Analysis ◽  
Gene Polymorphism ◽  
Somatic Cell Count ◽  
The Other ◽  
Production Traits ◽  
Black And White ◽  
Potential Association ◽  
Holstein Friesian ◽  
Pcr Rflp ◽  
Friesian Cows

The aim of this study was to identify SNPs mutations in the CATHL2 gene and determine their potential association with dairy performance traits in Polish Black-and-White Holstein-Friesian (phf) cows. Genotypes of individuals were identified by PCR-RFLP. The frequencies of CATHL2/DdeI alleles were C ‒ 0.693 and T ‒ 0.307, and for CATHL2/HhaI polymorphisms, G ‒ 0.763 and C ‒ 0.237. The statistical analysis showed that cows with the CC (CATHL2/DdeI) and CG (CATHL2/HhaI) genotype produced higher milk yield than the other cattle genotypes. In the case of CATHL2/DdeI and CATHL2/HhaI polymorphisms, the highest somatic cell count was found in heterozygous CT and CG 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.

scholarly journals Effect of growth hormone-releasing hormone gene polymorphism (GHRH/HaeIII) on milk performance in polish holstein-friesian cows

2008 ◽  
Vol 56 (4) ◽  
pp. 177-182 ◽  
Author(s):  
Małgorzata Szewczuk ◽  
Sławomir Zych ◽  
Ryszard Chaberski
Keyword(s):  
Growth Hormone Releasing Hormone ◽  
Production Traits ◽  
Milk Production Traits ◽  
Holstein Friesian ◽  
Pcr Rflp ◽  
Milk Performance ◽  
Fat Yield ◽  
The Relationship ◽  
Intron 2 ◽  
Friesian Cows

The objective of this study was to evaluate the relationship between the polymorphism within GHRH gene (GHRH/HaeIII) and milk production traits for Polish Holstein-Friesian using PCR-RFLP technique for genotyping. The molecular background of this mutation was defined as the A→C transversion at the intron 2. A total of 220 cows were examined. The following frequencies were established: 0.0227 for genotype AA, 0.3227 for AB, and 0.6546 for BB; 0.1841 for the allele GHRHA and 0.8159 for GHRHB. A highly significant association was found between the GHRH/HaeIII polymorphism and milk performance. The BB-genotype cows were characterised by a higher fat yield and percentage (P ≤ 0.01).

scholarly journals Effect of the temperament of dairy cows on lifetime production efficiency

2015 ◽  
Vol 58 (1) ◽  
pp. 193-197 ◽  
Author(s):  
W. Neja ◽  
A. Sawa ◽  
M. Jankowska ◽  
M. Bogucki ◽  
S. Krężel-Czopek
Keyword(s):  
Milk Yield ◽  
Production Efficiency ◽  
Dairy Farmers ◽  
Holstein Friesian ◽  
Milk Performance ◽  
Cattle Breeders ◽  
Daily Milk Yield ◽  
Efficiency Data ◽  
Daily Milk ◽  
Friesian Cows

Abstract. The aim of this study was to analyse the effect of the temperament of cows on their lifetime production efficiency. Data on milk performance, longevity and culling reasons of 11 629 Polish Holstein-Friesian cows were extracted from the SYMLEK database. Using the methodology of the Polish Federation of Cattle Breeders and Dairy Farmers, cow temperament was assessed as follows: 1 – calm; 2 – normal; and 3 – excitable or aggressive. Most cows showed a normal temperament (89.52 %). Over successive years of the evaluation, there were increases in the proportion of cows with a calm (from 2.98 to 6.85 %) and excitable temperament (from 7.50 to 8.27 %). Temperament was found to have a highly significant effect on first lactation milk yield, first lactation daily milk yield, milk yield per day of age, and milk yield per day of productive life. In cows with a calm temperament, first lactation milk yield was 621 kg higher than in cows with a normal temperament and 329 kg higher compared to excitable (aggressive) cows.

Relationship between somatic cell count and milk performance of Polish Holstein-Friesian cows

2016 ◽  
Vol 12 (1) ◽  
pp. 17-23
Author(s):  
Piotr Guliński ◽  
Krzysztof Wyszomierski ◽  
Ewa Salamończyk
Keyword(s):  
Somatic Cell ◽  
Cell Count ◽  
Milk Yield ◽  
Somatic Cell Count ◽  
Holstein Friesian ◽  
Study Population ◽  
Milk Performance ◽  
Daily Milk Yield ◽  
Daily Milk ◽  
Friesian Cows

The average somatic cell count in the milk analysed was 326,000 cells/ml. For the 4 groups of cows distinguished in the study, with daily milk yield of ≤15 kg, 15-25 kg, 25-35 kg and >35 kg, the somatic cell count was 771,000, 393,000, 240,000 and 180,000 cells/ml, respectively. Statistical analysis revealed significant differences in the somatic cell count in milk from cows with different productivity. A highly significant correlation coefficient was obtained for the daily milk yield of the cows and the somatic cell count in the milk (r=−0.81). The negative coefficient indicates that an increase in the quantity of milk was accompanied by a decrease in the somatic cell count in the milk. The regression equation obtained suggests that in the study population a decline in somatic cell count of 100,000 cells/ml was accompanied by an increase in daily milk yield of 3.8 kg. The analysis showed that there is a negative correlation between SCC and milk yield of cows. An increase in milk yield was found to be accompanied by a decrease in the number of somatic cells in 1 ml of milk, which indicates an improvement in its quality.

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