scholarly journals The Mineral Composition of Milk from High-Yielding Dairy Cows Depending on the Month of Lactation and Udder Health

2020 ◽  
Vol 10 (14) ◽  
pp. 4803
Author(s):  
Anna Nogalska ◽  
Martyna Momot ◽  
Zenon Nogalski
Keyword(s):  
Somatic Cells ◽  
Clinical Mastitis ◽  
Udder Health ◽  
Opposite Trend ◽  
Holstein Friesian ◽  
Zn Content ◽  
Daily Milk Production ◽  
Daily Milk Yield ◽  
Lower Limits ◽  
Daily Milk

The aim of this study was to determine the effects of the month of lactation and udder health of high-yielding Polish Holstein-Friesian (PHF) cows on daily milk production and the content of K, Ca, Na, Mg and Zn in milk. The experimental materials comprised 380 milk samples collected from 38 cows. The highest average daily milk yield (49.1 kg) was noted in cows in the second month of lactation and, considering udder health, in cows whose milk contained 201,000 to 400,000 somatic cells per mL on average (denoting risk of mastitis). The K content of milk increased (p < 0.05) in successive months of lactation, whereas the opposite trend was observed in the Zn content of milk. The average content of Ca (842 mg∙dm−3), Na (344.5 mg dm−3) and Mg (98.5 mg dm−3) in milk was below the lower limits of the normal physiological ranges. Milk from cows with healthy udders (≤200,000 somatic cells per mL) had the highest concentration of K, whereas the levels of Na and Zn were highest in milk from cows with clinical mastitis (> 1 mln somatic cells per mL). Udder inflammation was accompanied by an increase in the levels of Na and Zn in milk. The high content of Na and Zn in milk can be an additional indicator of mastitis in cows.

scholarly journals Dry Period Length as Related to Milk Yield and SCC During the First Month of Subsequent Lactation

2015 ◽  
Vol 15 (1) ◽  
pp. 155-163 ◽  
Author(s):  
Anna Sawa ◽  
Sylwia Krężel-Czopek ◽  
Mariusz Bogucki
Keyword(s):  
Milk Yield ◽  
Somatic Cell Count ◽  
Clinical Mastitis ◽  
Period Length ◽  
Dry Period ◽  
Udder Health ◽  
Milk Samples ◽  
Clinical Changes ◽  
Daily Milk Yield ◽  
Daily Milk

Abstract Analysis was made of the effect of dry period length in primiparous and multiparous cows on daily milk yield during the first month of subsequent lactation and on milk somatic cell count (SCC) on the basis of the information about the test-day milkings of 59 138 cows. The GLM and FREQ procedures of the SAS package were used in the statistical calculations. Dry period length in the primiparous and multiparous cows had a significant effect (P≤0.01) on daily milk yield and udder health, determined based on SCC. In terms of milk yield, the most favourable dry period would be 51-70 days for both primiparous and multiparous cows. Depending on udder health, a dry period of 51-90 days can be suggested. Shorter dry periods had more undesirable effects than longer dry periods. Excessively shortened dry period (≤10 days) caused the daily milk yield to decrease by 17% in primiparous and by 13% in multiparous cows while increasing the risk of clinical changes of the cow’s udder, regardless of age. The proportion of milk samples that showed evidence of clinical mastitis also increased when the dry period was excessively long (>90 days), especially in multiparous cows.

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.

Pemberian silase, complete feed, dan growth promoter pada sapi perah kawin berulang terhadap Services per Conception dan produksi susu

2020 ◽  
Vol 9 (2) ◽  
pp. 28
Author(s):  
Suherni Susilowati ◽  
Wurlina Wurlina ◽  
Sri Mulyati ◽  
Suzanita Utama ◽  
Dewa Ketut Meles
Keyword(s):  
Milk Production ◽  
Control Group ◽  
Growth Promoter ◽  
Growth Promoters ◽  
Dairy Farmers ◽  
Holstein Friesian ◽  
Reproductive Disorder ◽  
Daily Milk Production ◽  
Repeat Breeder ◽  
Daily Milk

Repeat breeding is a reproductive disorder that harms dairy farmers because of the unachieved target to obtain one calf per year and decreased milk production. The repeat breeding syndrome can be caused by malnutrition. This study aimed to determine the effect of feeding silage, complete feed, and growth promoters in repeat breeder cows to restore the services per conception (S/C) and daily milk production. Thirty repeat breeder Holstein Friesian cows were divided randomly into three groups. The control group (P0) was fed 30-40 kg forage and 3-4 kg concentrate/head/day. Group P1 was given 8-10 kg silage or complete feed alternately every day; whereas P2 was given the same as for the P1 group, added with 10 ml growth promoter/head/day. Milk production and S/C were measured after six months of treatment. The results showed that the P1 and P2 groups returned S/C to normal (1.40 ± 0.52 and 1.30 ± 0.48), while the S/C of P0 group was 3.20 ± 0.63 (p <0.05). Daily milk production in the P1 and P2 groups (14.20 ± 1.40 and 14.60 ± 1.43 l/d) was also higher (p <0.05) than the control group (8.30 ± 1.06 l/d). It could be concluded that feeding silage and complete feeds alternately daily, with or without the addition of growth promoter, improved the S/C to the normal range and increased milk production.

An assessment of the variation in milk yield of ewes determined by the lamb-suckling technique

1968 ◽  
Vol 70 (2) ◽  
pp. 187-194 ◽  
Author(s):  
J. J. Robinson ◽  
W. H. Foster ◽  
T. J. Forbes
Keyword(s):  
Body Weight ◽  
Diurnal Variation ◽  
Milk Yield ◽  
Sampling Technique ◽  
Standard Errors ◽  
Yield Data ◽  
Sources Of Variation ◽  
Daily Milk Production ◽  
Daily Milk Yield ◽  
Daily Milk

SUMMARYEwo milk yield data obtained by the lamb suckling technique from nutritional experiments were analysed statistically to obtain estimates of the several components of variation. Diurnal variation was studied. The fitting of a sinusoidal curve removed a significant amount of variation.There was a highly significant correlation between successive milk yields obtained at 4 h intervals. Number of lambs suckled and body weight of ewe at parturition had a significant effect on total daily milk yield.The variation within ewes after the removal of diurnal variation and between ewes after the removal of the effects of number of lambs suckled and body weight at parturition were computed. These sources of variation were combined in a general equation which enabled the prediction of the standard errors associated with daily milk production for a given sampling technique. The practical application of the predicted standard errors is discussed.

scholarly journals Analysis of production traits and microclimate parameters on dairy cattle farms

2019 ◽  
Vol 35 (4) ◽  
pp. 323-334
Author(s):  
Goran Vuckovic ◽  
Tina Bobic ◽  
Pero Mijic ◽  
Mirna Gavran ◽  
Klemen Potocnik ◽  
...  
Keyword(s):  
Dairy Cattle ◽  
High Variability ◽  
Production Traits ◽  
Negative Effect ◽  
Daily Milk Production ◽  
Daily Milk Yield ◽  
Cattle Farms ◽  
Daily Milk

Aiming determination of the variability of production traits (daily milk yield and composition) and microclimate parameters (ambient temperature and humidity) in the barns; as well as the correlation between the analyzed groups of traits, 1,636,192 test-day records from Simmentals and 1,275,713 test-day records from Holsteins were analysed. Performed analysis indicate high variability of production traits due to cow?s breed, parity as well as breeding region. Also, high variability of microclimate parameters in the barns due to season and breeding region was found. Furthermore, statistically highly significant (p < 0.001) correlations between the production traits and microclimate parameters were determined. Finally, the negative effect of inadequate microclimate on daily milk production was determined in both breeds in all breeding regions. Since genetic evaluation and selection of dairy cattle for heat resistance is only long-term method for heat stress managing, determined effect will be taken into account in the statistical model for estimation of genetic parameters and breeding values.

scholarly journals Influence of Temperature‑Humidity Relations During Years on Milk Production and Quality

2017 ◽  
Vol 65 (1) ◽  
pp. 211-218 ◽  
Author(s):  
Renáta Toušová ◽  
Jaromír Ducháček ◽  
Luděk Stádník ◽  
Martin Ptáček ◽  
Sylvana Pokorná
Keyword(s):  
Protein Content ◽  
Milk Production ◽  
Air Temperature ◽  
Somatic Cells ◽  
Climatic Conditions ◽  
Holstein Cows ◽  
Air Humidity ◽  
Relative Air Humidity ◽  
Daily Milk Production ◽  
Daily Milk

The aim of this study was to evaluate influence of climatic conditions represented by daily air temperature and relative air humidity on indicators of Holstein cows’ milk quality and production. The first dataset represented individual milk production in day of milk performance recording (milk kg, fat %, protein %, and somatic cells count thous.*ml−1). The second dataset represented total daily milk characteristics of herd (milk kg, fat %, protein % and somatic cells count thous.*ml−1). A total of 654 Holstein cows were observed and evaluated. Both datasets were evaluated in relation to selected external influences (year, month, average daily air temperature, and average daily relatively air humidity). Statistical analysis was performed using SAS 9.3, and UNIVARIATE, REG and GLM procedure. Three groups of daily air temeperature (< 4.4 °C; 4.4 – 13.2 °C; > 13.2 °C), and daily relative air humidity (< 65.3 %; 65.3 – 80.4 %; > 80.4 %) were conducted for evaluation. Significant (P < 0.05) linear regressions were computed among daily air temperature and all milk production indicators, except of somatic cells count attribute. The highest individual daily milk production (35.94 kg, P < 0.01), and protein content (3.41 %, P < 0.01) were achieved with the highest average daily air temperature. Opposite results were observed for milk yield of herd as well as protein content. Average daily relative air humidity had lower influence on individual and bulk milk samples. The better results were achieved for both datasets (individual and bulk samples) in groups (65.3 – 80.4 %; > 80.4 %) of average daily relative air humidity. Obtained results point out importance of outdoor climatic parameters monitoring and preventive measures of climatic conditions in the stable.

scholarly journals Somatic cells count in milk and its relation with productive traits in dairy cows

2021 ◽  
Vol 13 (4) ◽  
pp. 417-424
Author(s):  
I. Marinov ◽  
D. Dimov ◽  
T. Penev
Keyword(s):  
Milk Yield ◽  
Somatic Cells ◽  
Phenotypic Correlation ◽  
Milk Productivity ◽  
Mean Values ◽  
Lactating Cows ◽  
Productive Traits ◽  
Daily Milk Yield ◽  
Cattle Farms ◽  
Daily Milk

Abstract. The aim of the study was to determine the dependence between Test Day (TD) milk productivity traits and somatic cells count (SCC) in milk and also the influence of the factors: farm, parity and TD recording season of Holstein cows. The survey included a total of 484 lactating cows from 8 cattle farms in Bulgaria. A total of 3473 TD records including data on TD milk yield, fat %, protein % and SCC in milk were used. A statistically significant effect of the farm, recording season, and SCC on TD milk yield, fat % and protein % was reported. The highest TD milk yield was reported in spring (22.42 kg), followed by winter (21.95 kg). In winter and autumn were reported higher mean values for TD fat (3.77 and 3.84%) and TD protein (3.38 and 3.40%) content in milk. At the highest SCC – above 999 000 cells/ml, the highest average daily milk yield – 24.1 kg and the lowest fat (3.48%) was reported. With the highest and positive statistically significant value was the phenotypic correlation between TD milk yield and SCC (0.21). The correlation with TD fat % was statistically significant, with negative value (- 0.07).

The effect of single nucleotide polymorphism in the promoter region of bovine alpha-lactalbumin (LALBA) gene on LALBA expression in milk cells and milk traits of cows

2021 ◽  
Author(s):  
Malgorzata Ostrowska ◽  
Lech Zwierzchowski ◽  
Paulina Brzozowska ◽  
Ewelina Kawecka-Grochocka ◽  
Beata Żelazowska ◽  
...  
Keyword(s):  
Promoter Region ◽  
Somatic Cells ◽  
Production Traits ◽  
Milk Traits ◽  
Single Nucleotide ◽  
Protein Levels ◽  
Holstein Friesian ◽  
Daily Milk Yield ◽  
Retinoid X Receptor Alpha ◽  
Alpha Lactalbumin

Abstract Polymorphisms of milk protein genes have been proposed as candidate markers for dairy production traits in cattle. In the present study, a polymorphism was detected in the 5’flanking (promoter) region of the bovine alpha-lactalbumin (LALBA) gene, a T/C transition located at nucleotide (nt) -1001 relative to the transcription start site g.-1001T &gt; C (NC_037332.1:g.31183170T &gt; C) which is recognizable with PstI restriction endonuclease. In silico analyses showed that this mutation created novel retinoid X receptor alpha (RXRA) and vitamin D receptor (VDR) transcription factor binding sites. Real-time PCR found that cows with different genetic variants of the promoter demonstrated different levels of expression of LALBA mRNA in milk somatic cells (MSC). The TT genotype cows demonstrated low expression, while those with CT demonstrated much higher expression (P &lt; 0.05). ELISA analysis found milk LALBA protein levels also differed between the TT and CT cows (P &lt; 0.05), and that these levels were not correlated with the mRNA abundance in MSC. Association analysis found that the g.-1001T &gt; C polymorphism in the promoter region of the LALBA gene influenced milk production traits in Polish Holstein-Friesian (HF) cows. High daily milk yield and dry matter yield, and high lactose yield and concentration were associated with the TT genotype. The TT genotype cows also had a lower number of somatic cells in the milk, considered as an indicator of udder health status. Therefore, the TT genotype could be more desirable from the breeder’s perspective.

scholarly journals Milk Production of Holstein Friesian Dairy Cows in Various Lactation Periods (Case Study at Capita Farm, Semarang, Central Java)

JURNAL TERNAK ◽  
2020 ◽  
Vol 11 (2) ◽  
Author(s):  
Rudy Hartanto ◽  
Alvian Adhi Pamungkas ◽  
Edi Prayitno ◽  
Dian Wahyu Harjanti
Keyword(s):  
Dairy Cows ◽  
Milk Production ◽  
The Body ◽  
Lactation Period ◽  
Central Java ◽  
Holstein Friesian ◽  
The Difference ◽  
Daily Milk Production ◽  
Materials Used ◽  
Daily Milk

The purpose of this research was to determine and to assess the milk production of Holstein Friesian cows in Capita Farm based on its lactation period. The research was conducted on 29thSeptember – 28thOctober 2019. The materials used in the study were 59 FH dairy cows in the lactation period of 1-6 and lactation months of 1-10. The body weight was 497.71 ± 44.73 kg and the milk production was 14.43 ± 4.43 liters / day / head. The study was conducted by observation. The parameters observed were the lactation period and daily milk production. Afterward, the daily milk production was converted into milk production in one lactation period. The difference in milk production of one lactation period between the lactation periods was determined by the independent sample t test at level of 5%. The results of this research showed that the peak production in the 4th lactation period was 4458.26 liter/lactation, while the 1st, 2nd, 3th, 5th, 6th lactation periods were 3976.85; 4100.01; 4143.85; 3850.27; 2938.56 liter/lactation, respectively. The 6th lactation period was significantly lower than the others withproduction capability of 65.91% of the mature equivalent (ME). It was concluded that the Holstein Friesian dairy cows inCapita Farm has the highest production in the 4th lactation period, but there is a real difference in production when it enters the 6thperiod.

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