АВТОМАТИЗИРОВАННАЯ СИСТЕМА СЕЛЕКЦИОННОГО КОНТРОЛЯ КАЧЕСТВА МОЛОКА КОРОВ

2019 ◽  
pp. 14-17
Author(s):  
V.P. PROZHERIN ◽  
V.L. YALUGA ◽  
A.L. DIDIKINA ◽  
E.N. TURENKOVA ◽  
O.P. VASILIEVA ◽  
...  
Keyword(s):  
Milk Sample ◽  
Evaluation System ◽  
Milk Protein ◽  
Milk Quality ◽  
Housing System ◽  
Automated Evaluation ◽  
Milk Performance ◽  
The Mean ◽  
Daily Milk

Рассмотрены результаты оценки качества молока холмогорских коров. Целью исследований явилось изучение способа формирования контрольной суточной пробы молока у подконтрольных животных. Для этого было организовано и проведено 744 сеанса доения коров при привязном содержании, кормлении по графику и трехкратном доении. Было установлено, что суточный удой молока у подконтрольных коров составил 28,8 кг, при этом наибольшее количество молока (14,1 кг, или 49) было получено в среднем за утренний сеанс доения. На основании лабораторных исследований выявлено, что при удое 28,80,41 кг молока за контрольные сутки средние показатели селекционного контроля качества молока коров по массовой доле жира были достаточно высокими (3,950,05), а по массовой доле белка (3,060,01) значительно ниже стандарта породы (3,30). В то же время повышенной жирномолочностью (4,850,06) характеризуется молоко, полученное за дневной сеанс доения, что достоверно выше (Р0,001) показателей содержания жира в молоке за утренний и вечерний сеансы доения, соответственно, на 1,49 и на 0,71. Средние показатели белковомолочности молока были установлены пониженными за дневной сеанс и составили 3,020,01, что достоверно ниже на 0,03 (при Р0,05) средних показателей за утренний сеанс и на 0,08 белка (Р0,001) средних показателей за вечерний сеанс доения коров. Проведенными исследованиями доказано, что достоверность результатов оценки качественных показателей молока коров за контрольные сутки, а впоследствии и за лактацию, во многом определяется способом формирования пробы молока для лабораторного анализа. Для достижения селекционных целей при работе с холмогорской породой крупного рогатого скота была разработана и апробирована автоматизированная система селекционного контроля качества молока коров.The study analyses results of evaluation of selected milk quality from Kholmogori cows. The goal of theresearch was to study the method of forming the average daily milk sample of the cows under control. To this end 744 milking sessions of dairy cows on fixedtime scheme of feeding, in confinement housing system with 3 milkings a day were held. The results of the study showed that daily milk performance of Kholmogori cows in the research was 28,8 kg, while most of the milk (14,1 kg or 49) was milked in the morning milking session. On the base of the laboratory analysis it was found that while the average daily performance was 28,80,41 kg, the mean characteristics of selected milk quality of Kholmogori cows in fat were quite high (3,950,05), and the protein outcome was lower than average in the breed (3.30). At the same time milk in the midday session had higher outcome of fat (4,850.06), which is reliably higher (P0,999) than characteristics of fat content in morning and evening milkings, 1,49 and 0,71 higher respectively. It is remarkable that average characteristics of milk protein were set lower for the midday milking and were 3,020,01, which is reliably 0,03 lower (P0.999) than average figures for the evening milking. The research proved that reliability ofresults estimation of the selected quality milk for the test day, and subsequently for the lactation largely depends on the method of forming the daily milk sample for the laboratory analysis.For the selection purposes an automated evaluation system for selected milk quality of Kholmogori dairy cattle was developed and tested.

scholarly journals Betaine Improves Milk Yield in Grazing Dairy Cows Supplemented with Concentrates at High Temperatures

Animals ◽  
2019 ◽  
Vol 9 (2) ◽  
pp. 57 ◽  
Author(s):  
Frank Dunshea ◽  
Kehinde Oluboyede ◽  
Kristy DiGiacomo ◽  
Brian Leury ◽  
Jeremy Cottrell
Keyword(s):  
Dairy Cows ◽  
Milk Yield ◽  
Milk Fat ◽  
Milk Protein ◽  
The Mean ◽  
Fat Yield ◽  
Grazing Dairy Cows ◽  
Daily Milk Yield ◽  
Betaine Supplementation ◽  
Daily Milk

Betaine is an organic osmolyte sourced from sugar beet that accumulates in plant cells undergoing osmotic stress. Since the accumulation of betaine lowers the energy requirements of animals and, therefore, metabolic heat production, the aim of this experiment was to investigate if betaine supplementation improved milk yield in grazing dairy cows in summer. One hundred and eighteen Friesian × Holstein cows were paired on days in milk and, within each pair, randomly allocated to a containing treatment of either 0 or 2 g/kg natural betaine in their concentrate ration for approximately 3 weeks during February/March 2015 (summer in Australia). The mean maximum February temperature was 30 °C. Cows were allocated approximately 14 kg dry matter pasture and 7.5 kg of concentrate pellets (fed in the milking shed) per cow per day and were milked through an automatic milking system three times per day. Betaine supplementation increased average daily milk yield by over 6% (22.0 vs. 23.4 kg/day, p < 0.001) with the response increasing as the study progressed as indicated by the interaction (p < 0.001) between betaine and day. Milk fat % (p = 0.87), milk protein % (p = 0.90), and milk somatic cell count (p = 0.81) were unchanged by dietary betaine. However, betaine supplementation increased milk protein yield (677 vs. 719 g/day, p < 0.001) and fat yield (874 vs. 922 g/day, p < 0.001) with responses again being more pronounced as the study progressed. In conclusion, dietary betaine supplementation increased milk and component yield during summer in grazing dairy cows.

scholarly journals Effect of Sakura Block on Milk Production and Milk Quality of FH Cows in Late Lactation

2021 ◽  
Vol 16 (3) ◽  
pp. 266-272
Author(s):  
Jarmuji Jarmuji ◽  
D. Suherman ◽  
Yanuri Yanuri ◽  
R. Afriansyah ◽  
E. Sulistyowati
Keyword(s):  
Dairy Cows ◽  
Milk Production ◽  
Milk Sample ◽  
Dry Matter ◽  
Milk Protein ◽  
Latin Square ◽  
Fat Content ◽  
Feed Consumption ◽  
Sample Collection

This study aims to evaluate milk production, fat content, and protein content of Friesian Holland (FH) dairy cow's milk by giving Sakura block at the final lactation of FH cow. The design used was the Latin Square Design (LSD), with treatments of P0 (0 Sakura blocks), P1 (300 gr Sakura blocks), P2 (600 gr Sakura blocks), and P3 (900 gr Sakura blocks). This study involved four dairy cows for four periods of which period consisted of 10 treatment days, where the last 3 days of each period were the milk sample collection. Milk production and feed consumption were measured and weighed daily. The results showed that the treatment had a significant effect (P <0.05) on the consumption of dry matter ratio and no significant effect (P> 0.05) on milk production, fat content, and milk protein.

The effects of milking cows three times daily

1982 ◽  
Vol 34 (2) ◽  
pp. 197-201 ◽  
Author(s):  
D. A. Poole
Keyword(s):  
Food Intake ◽  
Milk Yield ◽  
Dry Matter ◽  
Milk Quality ◽  
Metabolizable Energy ◽  
Energy Concentration ◽  
Total Food ◽  
The Mean ◽  
Carry Over ◽  
Daily Milk

ABSTRACTThe experiment assessed the effects on performance from calving to the 20th week of lactation of milking cows three times daily (3 × ) compared to milking twice daily (2 × ). After 20 weeks all cows were milked 2 ×. Each treatment consisted of 18 cows and 11 heifers. The mid-calving date was 21 September 1979.Complete diets of the same composition were offered separately to each group in quantities equivalent to 1040 g/kg of their previous intake. The diet for the first 18 weeks of lactation was estimated to have an energy concentration within the range 11·0 to 11·3 MJ metabolizable energy per kg dry matter. After 18 weeks, the diet was reformulated to reduce the energy concentration to 10·3 MJ per kg dry matter. Total food intakes for the 20 weeks of treatment were 2352 kg dry matter (3 ×) and 2241 kg dry matter (2 ×). From 8 April 1980 the cows were turned out to grass to complete their lactations.During the 20 weeks the mean daily milk yields of heifers were 19·3kg (3×) and 171kg (2×) (P<005). Cow yields were 28·4 (3×) and 23·9 kg (2×) (P< 0·001) during the same period. After 3× daily milking ceased, there were some positive carry-over effects on milk yield and food intake.Lactation yields from heifers were 4881 (3 ×) and 4498 kg (2×), whilst for cows the equivalent yields were 6485 (3 ×) and 5694 kg (2 ×) (P<0·01). There were no significant differences in milk quality. At 20 weeks after calving the cows milked 3 × daily had gained less weight, but by 44 weeks from calving the weight gains were similar at 42 (3 ×) and 45 kg (2 ×).

Milk production, raw milk quality and fertility of dromedary camels (Camelus Dromedarius) under intensive management

2013 ◽  
Vol 61 (1) ◽  
pp. 71-84 ◽  
Author(s):  
Péter Nagy ◽  
Sonia Thomas ◽  
Orsolya Markó ◽  
Jutka Juhász
Keyword(s):  
Milk Production ◽  
Raw Milk ◽  
Milk Quality ◽  
Dromedary Camel ◽  
Lactation Period ◽  
Intensive Management ◽  
Significant Difference ◽  
The Mean ◽  
Daily Milk Production ◽  
Daily Milk

In many arid countries, dromedaries play an important role as a milk source in rural areas. However, the milk and meat production potential of this species is not well understood and documented. A large-scale camel dairy farm was established in 2006 in the United Arab Emirates. This study summarises the most important data on milk production, raw milk quality and reproductive efficiency collected on this farm during the first three years of operation. The average daily milk production, the mean length of lactation and the mean total milk production per lactation of 174 dromedaries were 6.0 ± 0.12 kg (± SEM), 586 ± 11.0 days (± SEM) and 3314 ± 98.5 kg (± SEM), respectively. The lactation curve reached its peak during the 4th month after parturition (mean ± SEM, 8.9 ± 0.04 kg), then it declined gradually, falling to 50% of the maximum by the 16th month postpartum (mean ± SEM, 4.3 ± 0.06 kg). Milking three times a day did not increase daily milk production compared to two times milking. Mean total viable bacterial count (TVC) and mean somatic cell count (SCC, ± SEM) of bulk raw camel milk were 4,403 ± 94 CFU/cm3 and 392,602 ± 5,999 cells/cm3 for a one-year period, respectively. There was a significant difference among months (P < 0.001). Coliform count was < 10 CFU/cm3 in most cases (96.5%). The average (± SEM) fat, protein, lactose, total solids (TS) and solid-non-fat (SNF) concentrations of individual milk samples were 2.51 ± 0.03%, 2.60 ± 0.01%, 4.03 ± 0.03%, 9.98 ± 0.03% and 7.56 ± 0.03%, respectively. Lactation period, average daily milk production and morning vs. evening milking significantly influenced milk chemical composition. For the 470 camels in the breeding programme, end-of-season pregnancy rate and birth rate were 87.0% and 82.6%, respectively, after natural mating. We have demonstrated that sustainable milk production is possible from a traditional species, the dromedary camel, under an intensive management system.

scholarly journals The method of using the method of composite indicators, and the method of randomized aggregates for quality evaluation of objects

2017 ◽  
Author(s):  
Л.А. Чудовская ◽  
М.М. Галилеев
Keyword(s):  
Evaluation System ◽  
Quality Evaluation ◽  
Composite Indicators ◽  
Normative Documents ◽  
Additional Information ◽  
Automated Evaluation ◽  
Wood Shaving ◽  
Weighting Coefficients ◽  
Weight Coefficients

В статье представлен сравнительный анализ уровня качества древесно-стружечных плит. Разработана методика построения сводного показателя качества. Моделируя неопределенность выбора весовых коэффициентов из класса допустимых векторов этих коэффициентов заданием гауссовых функций принадлежности, получаем случайный вектор весовых коэффициентов, дающий при подстановке в формулу сводного показателя рандомизированный (случайный) сводный показатель, который характеризует качество объекта с учетом неопределенности задания коэффициентов. Разброс значений рандомизированных сводных показателей будет оцениваться стандартными отклонениями соответствующих случайных величин. Автоматизированная подсистема оценки позволяет выводить результат оценки качества. Для оценивания качества ДСП результаты получены в виде отсортированных таблиц по значениям отдельных и сводных показателей качества ДСП. Привлечение дополнительной информации о сравнительной важности для потребителя отдельных показателей качества ДСП позволяет уточнить результаты анализа, существенно уменьшая разброс в оценке усредненных сводных показателей качества. На примере анализа уровня качества древесно-стружечных плит, отвечающих требованиям соответствующих нормативных документов, при помощи построения рандомизированных сводных показателей, апробирована работа методики, позволяющей проводить оценку качества исследуемых объектов. The article presents a carried out comparative analysis of a level of quality of the wood-shaving plates. The technique of constructing the composite indicator of quality is shown. Modeling the uncertainty of the choice of weighting coefficients from the class of admissible vectors of these coefficients with assignment of the Gaussian membership functions, we obtain a random vector of weight coefficients, which gives by substituting into the formula rollup randomized (random) a summary indicator that describes the quality of the object with the uncertainty of the job factors. The scatter of the values of randomized aggregates will be measured standard deviations of the respective random variables. Automated evaluation system allows you to display the result of evaluating quality. To estimate the quality of the wood-shaving plates by the results obtained in a sorted table according to the values of individual and composite indicators, quality chipboard. Attracting additional information about the relative importance to consumers of selected indicators of the quality of the wood-shaving plates allows you to refine the results of the analysis, substantially reducing the variation in the estimates of the average aggregated quality indicators. So, analysis of the level of quality of the wood-shaving plates that meets the requirements of the normative documents, with the help of constructing randomized aggregates, tested working methodology, allowing to assess the quality of the inspected objects.

scholarly journals A Study on Milk Yield, Fertility and Milk Quality Characteristics of Primiparous Red-Holstein and Holstein-Friesian Cows

2020 ◽  
Vol 8 (12) ◽  
pp. 2562-2569
Author(s):  
Atakan Koç ◽  
Ramazan Gürses
Keyword(s):  
Milk Yield ◽  
Milk Quality ◽  
Gestation Length ◽  
Holstein Friesian ◽  
Significant Difference ◽  
Days Open ◽  
Daily Milk Yield ◽  
Daily Milk ◽  
Friesian Cows

The aim of this study was to determine the reproductive characteristics, milk yield and milk quality of Primiparous Red-Holstein (RH) and Holstein-Friesian (HF) cows. For this aim, records and monthly taken milk samples of 83 RH and 14 HF raised on a farm in Aydın, Turkey were used. The averages of the first calving age (FCA), gestation length (GL), days open (DO), calving interval (CI), daily milk yield (DMY), 305-day milk yield (305-dMY), solid non-fat (SNF) and Log10 somatic cell count (Log10SCC) of milk were found to be 27.6±0.24 mo, 278.4±1.09 d, 144.0±7.12 d, 421.4±7.66 d, 22.7±0.21 kg, 6981±137.0 kg, 9.8±0.04% and 4.59±0.024 (38905 cells/ml), respectively. Except for DMY, the differences between the breeds were statistically insignificant for FCA, GL, DO, CI, 305-dMY, SNF and Log10SCC. DMY averages for RH and HF were 21.8±0.21 kg and 24.3±0.49 kg, respectively. The effect of season on FCA and the effect of lactation month on SNF and Log10SCC were also found to be statistically significant. Apart from DMY, not any significant difference was observed between RH and HF breeds in terms of the characteristics emphasized.

scholarly journals The effect of spring shearing on milk yield and milk composition in Tsigai ewes

2011 ◽  
Vol 27 (2) ◽  
pp. 241-249
Author(s):  
Y. Aleksiev
Keyword(s):  
Milk Yield ◽  
Milk Fat ◽  
Milk Protein ◽  
Milk Composition ◽  
Daily Output ◽  
Lactose Concentration ◽  
Nutrient Partitioning ◽  
The Mean ◽  
Daily Milk Yield ◽  
Daily Milk

Milk yield and milk composition responses to shearing were assessed in Tsigai ewes kept indoors. Sheep was offered 700g/head daily concentrate and chopped hay administered ad libitum and was milked twice daily - at 08:00 and at 18:00 h. Average for the two weeks post-shearing, daily milk yield dropped by 7.2 % due to the 8.2 and 2.2 %, respectively, reduction in the morning and in the afternoon milk yields. Fat and protein concentrations in the morning and in the afternoon milk on day 1, day 7 and day 14 after shearing surpassed vastly pre-shearing values whilst milk lactose concentration showed a trend towards postshearing reduction. On the three sampling post-shearing days daily output of different milk constituents exceeded the corresponding mean pre-shearing values by 16.2, 11.6 and 9.1 % in milk fat, 1.6, 3.5 and 6.2 % in milk protein, and 4.1, 7.2 and 2.2 % in total solids. The increase in daily output of milk constituents occurred despite the decline in daily milk yield. Lactose daily output, on the contrary, dropped by 6.9, 7.7 and 9.3 % relative to the mean pre- shearing value. Postshearing adaptive adjustments including changes in nutrient partitioning appear to underlie the alterations in milk yield and milk composition. It may be concluded that post-shearing changes in milk composition makes for the improvement of milk processing characteristics.

Computer Aided Assessment in Microsurgical Training

2016 ◽  
Vol 21 (02) ◽  
pp. 212-221 ◽  
Author(s):  
Amitabha Lahiri ◽  
Sandeep Jacob Sebastin ◽  
Siti Khadijah Yusoff ◽  
Alphonsus Khin Sze Chong
Keyword(s):  
Evaluation System ◽  
Initial Increase ◽  
Basic Requirement ◽  
New Methods ◽  
Skill Maintenance ◽  
Acceptable Quality ◽  
Computer Aided ◽  
The Mean ◽  
Objective View

Background: Acquiring competence in microsurgical suturing is a basic requirement for any trainee aspiring to perform clinical microsurgery. New methods and simulation platform continue to evolve, but the assessment of the quality of microsurgical suturing is largely subjective. We present the concept of computer aided assessment of standardised microsurgical task, using a novel training platform. The platform comprises of a simulator (hardware) that provides the trainee standardised microsurgical tasks, which are then evaluated using a customised software. Methods: A cohort of trainees attending a five day microsurgery training course was selected. The trainees performed three standardised exercises on the platform, on the first third and the fifth day of the course. All the exercises were subjected to computer aided assessment. Results: Trainees demonstrated a learning curve over the five day period through the evaluation system, with initial increase in performance followed by a plateau. Eighty four percent of the trainees were able to achieve acceptable scores. Sixteen percent of the trainees were unable to perform a suturing of acceptable quality at the end of the training (fifth day). Conclusions: The mean scores correlated with the level of difficulty of the exercise. We conclude that computer aided assessment can provide an objective view of the quality of suturing as well as skill maintenance in for trainees.

Effect of body condition at calving on the health and performance of dairy cows

1986 ◽  
Vol 43 (1) ◽  
pp. 1-6 ◽  
Author(s):  
R. J. Treacher ◽  
I. M. Reid ◽  
C. J. Roberts
Keyword(s):  
Body Weight ◽  
Dry Matter ◽  
Milk Protein ◽  
Early Lactation ◽  
Condition Score ◽  
The Mean ◽  
The Difference ◽  
And Performance ◽  
Daily Milk ◽  
Friesian Cows

ABSTRACTTwo groups of nine British Friesian cows were fed from about 32 weeks before calving to achieve condition scores at calving of 2·5 (thin) and 4 (fat). For 10 weeks after calving all cows were offered 7 kg hay daily in four feeds, with concentrates given five times daily according to appetite.During early lactation, the group of fat cows had lower dry-matter intakes and daily milk yields and yielded less milk protein and lactose than the group of thin cows. The mean yield of milk over the whole lactation was 500 kg less in the fat cows but the difference was not significant. The fat cows lost 48 kg body weight and 1·20 units condition score during early lactation compared with 27 kg body weight and 0·52 units condition score in the thin cows. No difference in reproductive performance was found between the two groups but significantly more cases of disease occurred in the fat cows than in the thin cows.It is concluded that cows that are fat at calving eat less than thin cows, give the same or less milk than thin cows, mobolize more body tissue and lose more weight after calving than thin cows and suffer more disease.

Milk quality of the Original Valachian in a submontane region

2011 ◽  
Vol 28 (2) ◽  
pp. 147-155
Author(s):  
Petra Pešinová ◽  
Antonín Vejčík ◽  
Miroslav Maršálek
Keyword(s):  
Serum Protein ◽  
Crude Protein ◽  
Dry Matter ◽  
Milk Quality ◽  
Total Period ◽  
Essential Components ◽  
Ewe's Milk ◽  
Daily Milk Yield ◽  
Daily Milk

Milk quality of the Original Valachian in a submontane regionThe aim of this study was to evaluate the milk efficiency of Original Valachian (OV) Sheep. The flock under scrutiny is kept at pasture at an altitude of 600 m in the Novohradske Mountains, and samples were taken from morning milking roughly in four to five weekly intervals during the period from April to August. The milking was begun on average on the 50th day of lactation, and was carried out mechanically. A total of 862 samples were analysed from an average of 54 ewes over the the years 2006-09. After an evaluation of the essential components of ewe's milk from the flock of OV lambing ewes during lactation these average values were found: fat 4.90 g 100 g-1, crude protein 5.94 g 100 g-1, casein 4.40 g 100 g-1, serum protein 1.18 g 100 g-1, lactose 5.07 g 100 g-1, dry matter 16.45 g 100 g-1, solid not fat 11.63 g 100 g-1 and utilizable dry matter 10.85 g 100 g-1. OV had an average daily milk yield of 0.70 l. Fat, protein, casein, serum protein and dry matter showed rising trends during lactation. During the total period of measurement the average protein content of OVmilk did not drop below 5 g 100 g-1, in contrast to fat, which was under 3 g 100 g-1. The lactose content rose at the beginning of lactation, after it showed a degressive trend. The amounts of utilizable dry matter during our experiment showed a fluctuating trend.

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