scholarly journals Somatic cell count and milk yield on physicochemical components of milk from free-stall housed cows

2017 ◽  
Vol 38 (2) ◽  
pp. 909
Author(s):  
José Antônio Freitas ◽  
Janielen Silva ◽  
Américo Fróes Garcez Neto ◽  
Tiago Machado Santos
Keyword(s):  
Somatic Cell ◽  
Cell Count ◽  
Milk Yield ◽  
Somatic Cell Count ◽  
Milk Composition ◽  
Daily Production ◽  
Total Solids ◽  
Group Iii ◽  
Physicochemical Composition ◽  
Group I

Measurement and evaluation of the factors that may influence milk composition has been shown to determine the actual gains in milk quality and quantity. The study was conducted to evaluate the influence of daily milk yield on the physicochemical composition of milk and analyze the correlations between milk yield and somatic cell count (SCC) on the fat, protein, lactose, total solids and nitrogen urea contents in Holstein cows’ milk. A total of 3,544 data collected from 467 cows were evaluated. In the analysis, the animals were divided into groups – I (5-15 kg milk day-1), II (15-30 kg milk day-1) and III (above 30 kg milk day -1) – based on their daily production. Animals of Group I had higher SCC (P < 0.05) and fat and protein percentage when compared with Group III. However, the lactose content was lower (P < 0.05) than Group II and III. No correlation (P > 0.05) between SCC and fat, protein and total solids contents was observed. A lower milk yield is significantly associated with a higher SCC, which, besides hindering the quality of milk, compromises the cow's udder health.

AN EVALUATION OF THE ABNORMAL MILK CONTROL PROGRAM1 RECOMMENDED BY THE INTERSTATE MILK SHIPPERS CONFERENCE (IMS)

1972 ◽  
Vol 35 (10) ◽  
pp. 582-584 ◽  
Author(s):  
W. C. Lawton ◽  
V. S. Packard
Keyword(s):  
Somatic Cell ◽  
Cell Count ◽  
Somatic Cell Count ◽  
Field Work ◽  
Study Groups ◽  
Study Group ◽  
Group Iii ◽  
Cell Counts ◽  
Group I ◽  
Microscopic Evaluation

For this investigation, 2,673 dairy herds supplying milk to the Minneapolis-St. Paul market were divided into three study groups consisting of 681, 684, and 1,308 herds. All milk supplies were analyzed monthly by the catalase test and confirmatory microscopic evaluation was made on all samples showing 20% or higher oxygen. The study groups were treated as follows: Group I producers received no reports of tests made on their milk supplies and no field work was done; Group II producers were sent reports of tests, but no field work was done; Group III received reports of tests and where high somatic cell counts were observed, a fieldman assigned to the project made farm visits, assisted the producer where possible and filed a work sheet report on milking equipment condition and milking practices. Data were collected for slightly under two years, between August, 1969 and February, 1971. A total of 30,645 catalase determinations was made. Of these, 4,875 ( 15.9%) showed 20% oxygen and higher and 2,084 (6.8%) showed 30% and higher. In the latter group, 368 (1.2% of all samples) were confirmed by the microscopic method at 1.5 million or higher somatic cell count. By study group, the percentages of samples confirmed at 1.5 million or higher somatic cell count (for all catalase tests of 20% or higher) were 1.2, 1.4, and 1.5%, respectively. Using 1.5 million or higher somatic cell count as an actionable level, actionable cases by study group were 11.3, 10.4, and 12.0%, respectively. Lastly, considering three out of five actionable level counts as a basis for suspending permits, the percent of potential suspensions, by study group, were 0.14, 0.73, and 0.91%, respectively.

scholarly journals Connection of somatic cell count and milk yield as well as composition in dairy ewes

2010 ◽  
Vol 53 (1) ◽  
pp. 95-100
Author(s):  
J. Olechnowicz ◽  
Z. Sobek ◽  
J. M. Jaśkowski ◽  
P. Antosik ◽  
D. Bukowska
Keyword(s):  
Somatic Cell ◽  
Cell Count ◽  
Milk Yield ◽  
Somatic Cell Count ◽  
Threshold Value ◽  
Milk Composition ◽  
Milk Samples ◽  
Dairy Ewes ◽  
Cell Counts ◽  
Daily Milk

Abstract. The aim of this study was to determine the effect of somatic cell count (SCC) on milk yield and composition using a threshold value of 250 ∙103 cells/ml in dairy ewes of line 05. A total of 1 512 milk samples from udder halves were collected throughout milking periods at monthly intervals. In the present study milk composition (from halves of the udder) and daily milk yield (from udders) was examined in terms of SCC in ewe milk in three groups: from both halves of the udder below 250 ∙103 cells/ml, from one halves of the udder below 250 ∙103 cells/ml and from second half udder above 250 ∙103 cells/ml and from both halves of the udder above 250 ∙103 cells/ml. Milk yield from udders, somatic cell count in milk samples from udder halves and milk composition depended on the level of SCC recorded for halves of the udder. Somatic cell counts in milk from one or both halves of udders exceeding 250 ∙103 cells/ ml resulted in a statistically significant (P<0.01) decrease in daily milk production of ewes, by approx. 15.89 and 30.22 %, respectively. The analysis of variance showed also a significant effect of parity and stage of lactation of ewes on somatic cell count (log SCC) and milk composition from udder halves below 250 ∙103 cells/ml.

Short-term effects of milking frequency on milk yield, milk composition, somatic cell count and milk protein profile in dairy goats

2014 ◽  
Vol 81 (3) ◽  
pp. 275-279 ◽  
Author(s):  
Alexandr Torres ◽  
Lorenzo-Enrique Hernández-Castellano ◽  
Antonio Morales-delaNuez ◽  
Davinia Sánchez-Macías ◽  
Isabel Moreno-Indias ◽  
...  
Keyword(s):  
Somatic Cell ◽  
Cell Count ◽  
Milk Yield ◽  
Somatic Cell Count ◽  
Milk Protein ◽  
Protein Profile ◽  
Milk Composition ◽  
Dairy Goats ◽  
Short Term ◽  
Milking Frequency

Goats in Canary Islands are milked once a day by tradition, but in most countries with high technology on farms, goats are milked twice a day, which is known to improve milk yield. Therefore it is important to know whether the increase of milking frequency can improve the production without impairing milk quality. The objective of this study was to investigate the short term effects of three milking frequencies on milk yield, milk composition, somatic cell count (SCC) and milk protein profile in dairy goats traditionally milked once a day. Twelve Majorera goats in early lactation (48±4 d in milk) were used. During a 5-week period, goats were milked once a day (X1) in weeks 1 and 5, twice a day (X2) in weeks 2 and 4, and three times a day (X3) in week 3. Milk recording and sampling were done on the last day of each experimental week. Milk yield increased by 26% from X1 to X2. No differences were obtained when goats were switched from X2 to X3, and from X3 to X2. The goats recovered the production level when they returned to X1. Different patterns of changes in the milk constituents due to the milking frequency effect were observed. Fat percentage increased when switched from X1 to X2, then decreased from X2 to X3, and from X3 to X2, whereas it did not show significant differences from X2 to X1. Milking frequency did not affect the protein and lactose percentages. SCC values were unaffected when goats were milked X1, X2 and X3, but then they increased slightly when milking frequency was returned to X2 and X1. Finally, quantitative analysis showed an increase in intensities of milk protein bands from X1 to X2, but the intensities of casein bands (αS1-CN, αS2-CN, β-CN, κ-CN) and major whey proteins (α-La, β-Lg) decreased from X2 to X3.

scholarly journals Electrical conductivity and somatic cell count in zebu cow’s milk

2017 ◽  
Vol 38 (5) ◽  
pp. 3231
Author(s):  
Emmanuella De Oliveira Moura ◽  
Adriano Henrique do Nascimento Rangel ◽  
Luis Henrique Fernandes Borba ◽  
José Geraldo Bezerra Galvão Júnior ◽  
Guilherme Ferreira da Costa Lima ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Somatic Cell ◽  
Cell Count ◽  
Somatic Cell Count ◽  
Pearson Correlation ◽  
Milk Composition ◽  
Monthly Data ◽  
Total Solids ◽  
Physico Chemical ◽  
The City

The objective was to evaluate the physico-chemical composition, somatic cell count and electrical conductivity of the milk from lactating Zebu cows. For this, monthly milk samples were collected on the official milk control day intended for analysis of electrical conductivity of milk (ECM), somatic cell count (SCC) and milk composition. We used monthly data from 680 controls, from 10 Gyr and 17 Guzerat cows from a herd located in the city of São Gonçalo do Amarante/RN, from August to November 2013. Analyses of variance, mean test and Pearson correlation analysis were conducted. The levels of fat (% F), protein (% P), lactose (% L), total solids (% TS) and non-fat dry extract (% NFDE) were dependent variables for the ECM and SCC. The milk of Gyr cows for ECM, SCC, GOR, PROT, LACT, TS and NFDE were respectively, 3.88±1.18 mS/cm, 1629±2195 thousands cells/mL, 4.71±1.77%, 3.29±0.31%, 4.5±0.33%, 13.5±1.78%, 8.79±0.37%, and for the Guzerat breed 3.59±0.88 mS/cm 1356±1793 thousands cells/mL, 4.47±0.98%, 3.43±0.32%, 4.52±0.24%, 13.5±1.19%, 9.02±0.48%. No significant correlations between SCC and ECM characteristics were observed. However, when the correlation of each of these parameters and milk composition in different classes for each breed was analyzed, a significant correlation of the SCC was observed with the protein and lactose in Gyr, of the ECM with the lactose and SCC with total solids and fat for the Guzerat cows.

scholarly journals The effects of somatic cell count on milk yield and milk composition in Holstein cows

2019 ◽  
Vol 89 (2) ◽  
pp. 143-154 ◽  
Author(s):  
Ertuğrul Kul ◽  
◽  
Aziz Şahin ◽  
Savaş Atasever ◽  
Emre Uğurlutepe ◽  
...  
Keyword(s):  
Somatic Cell ◽  
Cell Count ◽  
Milk Yield ◽  
Somatic Cell Count ◽  
Milk Composition ◽  
Holstein Cows

scholarly journals Losses in milk production and quality due to milk somatic cell count and heat stress of Holsteins cows in temperate climate

2015 ◽  
Vol 36 (5) ◽  
pp. 3455
Author(s):  
Agostinho Ludovico ◽  
Vinicius Buffon Maion ◽  
Dalton Evert Bronkhorst ◽  
Fabíola De Almeida Cristine Rego Grecco ◽  
Luiz Fernando Coelho da Cunha Filho ◽  
...  
Keyword(s):  
Heat Stress ◽  
Somatic Cell ◽  
Cell Count ◽  
Milk Yield ◽  
Somatic Cell Count ◽  
Descriptive Analysis ◽  
Milk Composition ◽  
Temperate Climate ◽  
Cattle Breeders ◽  
Daily Milk Yield

<p class="Pa7">The aims of present study were to evaluate the effects of milk somatic cell count (SCC) and heat stress on yield and milk composition of cows in a herd for commercial production in a temperate region during the period 2008-2012. Data from the monthly milk test-day records of 161±9 Holstein, totaling 9,650 milkings, were provided by the Association of Holstein Cattle Breeders of Parana State, and analyzed by descriptive analysis, correlation, analysis of variance, and regression analysis. The average daily milk yield was 31.78 kg/cow, which decreased to 29.31% when the somatic cell score (SCS) was 9, and to 11% when the Equivalent Temperature Index (ETI) was 32 or above. Lactose content decreased from SCS 0 until 9 and fat content decreased from SCS 1 until 9, totaling decrease 7.88 and 9.23%, respectively, when the SCS was 9. An opposite effect was observed for the protein content, which increased by 3.6% at SCS 8, when compared to SCS 0. Losses were observed in the daily total solids production from the SCS 0, totaling 30.64% at SCS 9.The increase in ETI to 32 or above reduced all milk constituents as much as 3.42%, except protein. These results, combined with the losses in milk yield at that ETI level, led to a decrease of up to 12.74% of milk solids. It is concluded that since losses in milk quality and yield resulting from SCC and ETI are significant, actions to prevent infection in the mammary gland and to provide a comfortable environment for dairy cattle are needed even in temperate regions.</p>

scholarly journals Effect of premilking teat sanitation on milk composition, somatic cell count and test day milk yield in Holstein cows

2017 ◽  
Author(s):  
Edit Mikóné Jónás ◽  
Savas Atasever ◽  
Erika Havranek
Keyword(s):  
Somatic Cell ◽  
Cell Count ◽  
Milk Yield ◽  
Somatic Cell Count ◽  
Genetic Factors ◽  
Milk Composition ◽  
Holstein Cows ◽  
High Quality ◽  
Disinfectant Solution ◽  
Positive Correlations

The objective of the present study was to determine the efficacy of premilking teat sanitation applications on milk composition, somatic cell count (SCC) and test day milk yield (TDMY) in Holstein cows. The research was conducted in two private farms located in Hódmezõvásárhely, South- Hungary. In the first trial, only water and drying application (WD) was practiced to 791 cows and in the second trial, disinfectant solution and drying application (DD) was performed to 1418 cows. Fat (F), protein (P) and lactose (L) were tested as the milk parameters and SCC and TDMY records were also evaluated. To investigate the effects of non-genetic factors on the parameters, four parity and three days in milk groups were designed. L, SCC and TDMY were affected by parity in both applications, and P affected by DD (P less than 0.01). All traits were affected by DIM in both applications (P less than 0.05 or P less than 0.01). While positive correlations were estimated between F and P; F and SCC; P and SCC; L and TDMY; the negative correlations were determined between F and L; F and TDMY; P and L; P and TDMY; L and SCC; SCC and TDMY. The means of F, P and SCC were higher in DD, but L and TDMY were higher in WD (P less than 0.05). The study revealed that cleaning the udder using plenty of water and drying the teats with clean clothes are suggested to dairy owners as a preferential premilking application to obtain high quality milk

The effect of suckling following mechanical milking on milk yield, milk composition and somatic cell count in dairy cattle

2000 ◽  
Vol 25 ◽  
pp. 175-177 ◽  
Author(s):  
J.K. Margerison ◽  
C.J.C. Phillips
Keyword(s):  
Somatic Cell ◽  
Cell Count ◽  
Protein Content ◽  
Milk Yield ◽  
Milk Fat ◽  
Somatic Cell Count ◽  
Milk Protein ◽  
Milk Composition ◽  
Fat Content ◽  
Daily Milk Yield

AbstractSuckling following mechanical milking is common practice in organic dairy production systems and in developing countries. The objective of the experimental work was to assess the effect of suckling and suckling frequency following mechanical milking on milk yield, milk composition and somatic cell count. Two experiments were completed using multiparous dairy cows allocated at 3 days post partum to their respective treatment groups. In experiment one, twenty–four multiparous dairy cows were allocated to one of two treatments for 305 days; 12 cows not suckled (NS) and 12 cows, which were suckled twice daily following mechanical milking (S2). Daily milk yield was significantly greater (P<0.05) in suckled cows, NS 8.0, S2 8.9 (sem 0.18) kg/d. Milk fat content was significantly lower (P<0.05) in suckled cows (NS 32.0, S2 30.7 (sem 0.56) g/kg). However, milk protein was not significantly different in suckled cows, NS 29.2, S2 27.6 (sem 10.79) g/kg compared with non suckled cows. Somatic cell count was significantly lower (P<0.05) in suckled cows NS 106, S2 85 (sem 2.85) 000/ml, compared with non suckled cows. In experiment two, thirty-eight cows were allocated one of two treatments for 120 days; 19 cows not suckled (NS) and 19 cows, which were suckled once daily following the afternoon milking (S1). Suckling took place for fifteen minutes daily following machine milking only. The calves were weaned at 6 months of age. Total daily milk yield was significantly greater (P<0.05) in suckled cows, NS 11.7, S1 12.5 (sem 0.04) (kg/d) compared with non suckled cows. The milk fat and protein content were not significantly different in suckled and non suckled cows. Milk fat content NS 33.4, S1 32.9 (sem 0.14) g/kg and milk protein content NS 29.8, S1 30.0 (sem 0.07) g/kg. In conclusion, suckled cows had significantly higher milk yields. Cows suckled twice daily had significantly lower milk fat content. Suckling did not affect milk protein content. Suckling cows twice daily significantly reduced SCC.

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