Effect of microclimatological changes on dairy cattle productionunder the coastal climate of Goa

2016 ◽  
Author(s):  
S. K. Das ◽  
N. P. Singh
Keyword(s):  
Relative Humidity ◽  
Milk Yield ◽  
Management Practices ◽  
Maximum Temperature ◽  
Economic Losses ◽  
Unit Increase ◽  
Sahiwal Cows ◽  
Daily Milk Yield ◽  
The Impact ◽  
Daily Milk

It was observed that in Deoni and Cross bred cow daily change of relative humidity, maximum temperature and minimum temperatures had significant (P < 0.01) effect on daily milk yield of cow. It was inferred that the effect was more pronounced on cross bred cows than that of Deoni and Sahiwal cows. Between the two indigenous cows effect of micro climatological changes was more pronounced on Deoni breed than Sahiwal breed of cow. It was also observed that overall daily milk yield was reduced by 1 g (P > 0.05), 6 g (P > 0.05), 22 g (P > 0.05) and 78 g (P < 0.01) per unit increase of air temperature, relative humidity, temperature humidity index and maximum temperature respectively while data were analyzed as a whole considering all the cows of all the breeds together. Economic losses resulting from temperature-induced reductions in production may justify mitigation of these temperature increases through changes in management practices such as installation of sprinklers in sheds, evaporative cooling of barns, feeding and nutritional strategies, and/or selection of more heat-tolerant animals. So, risk management, by considering perceived thermal challenges, then assessing the potential consequences and acting accordingly, will reduce the impact of such challenges.

The impact of IPARD supports on structural and managerial featuresof dairy enterprises in Afyonkarahisar province

2017 ◽  
Author(s):  
Mehmet Yardimci ◽  
Hikmet Ari ◽  
Recep Aslan
Keyword(s):  
Statistical Analysis ◽  
Milk Yield ◽  
Production Quality ◽  
Years Of Experience ◽  
Before And After ◽  
Automatic Milking System ◽  
Automatic Milking ◽  
Daily Milk Yield ◽  
The Impact ◽  
Daily Milk

A survey was carried out to determine the impact of IPARD supports on dairy enterprises in Afyonkarahisar. IPADR beneficiary group found to have 3-5 years of experience, university graduate owners with no extra income where records are kept and statistical analysis is performed. Non-beneficiary group was more experienced with less educated owners, half had an extra income but did not keep records and not perform statistical analysis. In the first group, average daily milk yield was 25 liters, calves were weaned at 90 days, automatic milking system was used, hoof care was regularly performed, manure was removed by scrapers, teats were cleaned before and after milking while in the second group average daily milk yield is 10-30 liters, calves were weaned between 30-90 days, mobile milking machines were used, hoof care was slightly performed, manure was collected manually, teats were cleaned before milking. Consequently, IPARD grants were useful for improving the production quality, hygiene and amount in dairy enterprises.

scholarly journals Influence of microclimatic conditions on the daily production of dairy cows

2013 ◽  
Vol 29 (1) ◽  
pp. 45-51 ◽  
Author(s):  
D. Kucevic ◽  
M. Plavsic ◽  
S. Trivunovic ◽  
M. Radinovic ◽  
V. Bogdanovic
Keyword(s):  
Relative Humidity ◽  
Ambient Temperature ◽  
Dairy Cows ◽  
Milk Yield ◽  
Dairy Farm ◽  
Comfort Level ◽  
Daily Production ◽  
Microclimatic Conditions ◽  
Daily Milk Yield ◽  
Daily Milk

The aim of this paper was to determine the microclimatic conditions (ambient temperature and relative humidity) in dairy farm, as well as to evaluate the effect and significance of temperature - humidity index (THI) values on the daily milk yield. The observation of microclimatic parameters was conducted in the period from 9.03.2012 to 6.05.2012. The study included 136 Holstein Friesian cows. The estimation of the effect of THI on daily production of dairy cows was defined by applying fixed-effect statistical model. Average ambient temperature during measuring months amounted to 15.6?C (ranging from 7.2? C to 24.6?C), while the average value of relative humidity was 56.33% (ranging from 40.30% to 81.80%). During the study, the mean value of THI was 58.93 (ranging from 47.08 to 70.13) and didn?t exceed the critical comfort level of 72. All tested fixed-factors were statistically affected the daily milk yield (p <0.01). For each unit of increase in the value of the THI, the amount of milk decreased by 0.05344 kg. This confirmed the importance of regular recording of THI values and microclimatic conditions as a unique indicator of thermal stress in dairy farm.

scholarly journals Milk Production and Reproductive Performance of Retained and Culled Cows in a Large Holstein Herd in Egypt

2021 ◽  
Vol 11 (3) ◽  
pp. 474-483
Author(s):  
Nadia Hamdi Fahim ◽  
Mohamed Abdel-Aziz Mohamed Ibrahim ◽  
Ahmed Hassan Amin ◽  
Rabie Ragab Sadek
Keyword(s):  
Milk Yield ◽  
Respiratory Diseases ◽  
Management Practices ◽  
Reproductive Efficiency ◽  
Reproductive Disorders ◽  
Endemic Diseases ◽  
Digestive Disorders ◽  
Days Open ◽  
Daily Milk Yield ◽  
Daily Milk

The study aimed to identify the culling reasons of Holstein cows raised in a large commercial herd in Egypt with emphasis on the performance of retained and culled cows. A total of 31534 complete lactation records for 10994 cows calved from 2008 to 2019 were used. The overall rate of culling per lactation was 61.1%. Involuntary culling represented 92% of all culling cases. The reasons for culling included mastitis and udder problems (24.2%), reproductive disorders (18.7%), metabolic and digestive disorders (13.6%), lameness (13%), endemic diseases (10.8%), low milk yield (8.1%), respiratory diseases (4.3%) and unknown causes (7.3%). Means of 305-day milk yield and daily milk yield were significantly lower in culled cows than the retained ones. On the other hand, no significant differences were observed between culled and retained cows for days open and the number of services/conception. The high involuntary culling rate of Holstein under the Egyptian conditions revealed that management practices regarding mastitis prevention and reproductive efficiency should be improved.

RELATIONSHIP OF SOMATIC CELL CONCENTRATION WITH MILK YIELD IN DAIRY COWS

1986 ◽  
Vol 66 (3) ◽  
pp. 607-614 ◽  
Author(s):  
T. R. BATRA
Keyword(s):  
Somatic Cell ◽  
Milk Yield ◽  
Somatic Cell Count ◽  
Yield Loss ◽  
Genetic Group ◽  
Stage Of Lactation ◽  
Unit Increase ◽  
Daily Milk Yield ◽  
Classification Variable ◽  
Daily Milk

The relationship between somatic cell count (SCC) and milk yield was studied using the data of 2181 composite milk samples collected once every 2 mo during 1982–1983 from 665 cows of the Ottawa herd of the National Cooperative Dairy Cattle Breeding Project. SCC was treated either as a continuous (log SCC) or a classification variable. The data, when SCC was treated as a continuous variable, were analyzed separately for the first and later lactations. The model contained the effects of genetic group, stage of lactation, season of calving, and log SCC as a covariable. As a classification variable SCC was partitioned into 10 classes and the data for the first and later lactation cows were combined. The model included the effects of genetic group, parity, stage of lactation, season of calving, and SCC classification. Lactation SCC was calculated as the average of actual individual SCC tests during the lactation. The model for the lactation milk yield included the effects of genetic group and parity, with log SCC and days in milk as covaribles within parity groups. The effects of genetic group, parity, stage of lactation, season of calving and SCC were significant (P < 0.01) for daily milk yield. Average daily milk yield loss was 0.5 kg and 0.7 kg for the first and later lactation cows, respectively, when the SCC increased from 200 × 103 to 400 × 103 cell mL−1. Lactation milk yield loss per unit increase in average log SCC was 74 kg in the first lactation and 88 kg for later lactations. These relationships were linear, suggesting that loss of milk yield per unit increase in SCC was greatest when SCC was low. Key words: Somatic cell count, milk yield

scholarly journals The impact of cow keeping technologies on milk production of cows and their protection against midges in summer

2020 ◽  
Vol 10 (3) ◽  
pp. 6-11
Author(s):  
O.A. Fiodorova ◽  
E.I. Sivkova ◽  
M.I. Serkova
Keyword(s):  
Milk Production ◽  
Milk Yield ◽  
Cattle Grazing ◽  
Milk Productivity ◽  
Daily Milk Yield ◽  
The Impact ◽  
Harmful Effects ◽  
Daily Milk

Data are presented on the average daily milk yield of cows during the mass abundance of horseflies, mosquitoes and midges depending on the technology of keeping animals in the Tyumen region. Keeping the cows during this period without grazing on the walking grounds at the farm is one of the methods of preserving their milk productivity. During the period of mass flight of gnats, the milk productivity of cattle grazing in forest pastures is significantly reduced. Loss of milk during this period is 13.68%, while the longer the harmful effects of the vulture, the more significant these losses.

scholarly journals Economics of milk yield losses in one dairy farm in Macedonia associated with clinical mastitis

2014 ◽  
Vol 3 (1) ◽  
pp. 42-50
Author(s):  
Fetai Valdrina ◽  
Nakov Dimitar ◽  
Jashari Besirm ◽  
Trajchev Metodija
Keyword(s):  
Milk Yield ◽  
Dairy Herd ◽  
Clinical Mastitis ◽  
Economic Losses ◽  
Dairy Herds ◽  
Yield Losses ◽  
Production Chain ◽  
First Case ◽  
Daily Milk Yield ◽  
Daily Milk

Mastitis remains one of the major disease in dairy herds, causing profound economic losses to the entire milk production chain due to changes in the milk quality and milk yield. A one year cross-sectional longitudinal survey was carried out to evaluate milk yield losses associated with occurrence of clinical mastitis cases in one dairy herd. Cows that had clinical mastitis and clinically healthy cows during lactation were included in the study. The traits analyzed were the average of the monthly test day milk yields, cow parities and days in lactation while first case of clinical mastitis was occurred. For these purpose there were recorded data for monthly test day milk yield of the cows at the 2nd, the 3rd and the 4th monthly test day (TD). TDs were chosen according to the average number of days in lactation to diagnose the first case of clinical mastitis. According these criteria, the 2nd and the 3rd TD were made before the diagnosis of the first lactation case of clinical mastitis, while the 4th TD was made after the diagnosis. Monthly test day milk yields were treated as repeated measurement within an animal in General Linear Model (GLM). Statistical model included fixed effect of cow parity and covariance of days in lactation when the first case of clinical mastitis was occurred. Estimated lactation incidence risk (LIR) for CM in observed population of dairy cows was 21.49%. Regardless parities, the first case of clinical mastitis in dairy herd occurred on the average 108.09±83.182 days in lactation. The LIR tended to significantly increased (p<0.001) with increasing the cow parity, as risk factor for occurrence of clinical mastitis. Before contracting the disease, cows with clinical mastitis yielded more milk than did healthy cows. Mastitis clearly affected the milk yield and the difference between the milk yield of the healthy cows and the cows after clinical mastitis was statistically significant. There was a significant decrease in the milk yield before and after the diagnosis of clinical mastitis case (p<0.001). The estimated daily milk yield losses per cow suffered from case of clinical mastitis, between the 3rd TD and the 4th TD, range from 0.9 kg to 26.0 kg, or average 9.6 kg/day. According this, the monthly milk yield losses per mastitic cow, between the 3rd TD and the 4th TD, were 288 kg. If we take in consideration the price of one kg milk of 0.32 euro, than the total daily economic losses per mastitic cow will be around 3 euro’s and monthly losses per cow will be around 92 euro. Regardless of the time of occurrence during the lactation, mastitis had a long-lasting effect on milk yield; cows with clinical mastitis did not reach their premastitis milk yields during the remainder of the lactation after onset of the disease. The daily milk yield must be taken in consideration for more rapid economic analysis of milk losses associated with occurrence of clinical mastitis in dairy herds.

scholarly journals Effect of Calving Season, Calving Year and Lactation Number on the Milk Yield Traits in Holstein Cows Raising in Şanlıurfa

2020 ◽  
Vol 8 (2) ◽  
pp. 313
Author(s):  
Durhasan Mundan ◽  
Abuzer Kafar Zonturlu ◽  
Yahya Öztürk ◽  
Tuğra Akkuş ◽  
Cihan Kaçar
Keyword(s):  
Milk Yield ◽  
Recording System ◽  
Holstein Cows ◽  
Yield Traits ◽  
Least Mean Squares ◽  
Lactation Length ◽  
Calving Season ◽  
Daily Milk Yield ◽  
The Impact ◽  
Daily Milk

The aim of the present study is to investigate the impact of some environmental factors on the descriptive values of milk yield characteristics in Holstein cows. For this purpose, a total of 241 lactations belonging to 62 Holstein cows had been kept as breeders in a private establishment were evaluated for 7 years in terms of milk yield. When the recording system of the establishment was examined, the average values of lactation yield (LY), corrected 305 day milk yield (305-dMY), average daily milk yield (ADMY) and lactation length (LL) were 9356.2±126.1 kg, 8549.2±105.8 kg, 28.0±0.3 kg and 315.0±2.3 days, respectively. The least mean squares (LMS) of LY was calculated as 9324.9 kg. It was found that the effect of the calving season on the LY was statistically significant (P

scholarly journals Use of enzymatic-probiotic preparations in feeding of lacting cows at jsc “Plemzavod Rodina”

2020 ◽  
pp. 62-65
Author(s):  
Anastasia Sergeevna Litonina ◽  
Andrey Viktorovich Platonov ◽  
Julia Mikhailovna Smirnova
Keyword(s):  
Milk Yield ◽  
Milk Fat ◽  
High Efficiency ◽  
Live Weight ◽  
Control Group ◽  
Milk Productivity ◽  
Feed Costs ◽  
Daily Milk Yield ◽  
The Impact ◽  
Daily Milk

The article reviews the effectiveness of the usage of enzyme-probiotic preparations “Rumit” and “Cellobacterin+” in feeding lactating cows. The test of enzyme-probiotic additives was carried out in the fall of 2019 in the conditions of JSC “Plemzavod Rodina” of the Vologda region. To study the impact of additives on the level of milk productivity, three groups of animals were formed by the method of balanced groups taking into account live weight, age, blood count, and productivity. The group of animals that received “Cellobacterin +” as an additive of 50 g per day for each head exceeded the control in terms of daily milk yield by 2.9% with a higher fat content of 0.01% and protein by 0.05% at lower food costs per product unit of 5%. High efficiency was also observed while using“Rumit” in feeding, the daily milk yield of cows’ basic fat contentin the experimental group exceeded the control by 7.4%, the yield of milk fat – by 4.7%, and protein – by 5.6%. Feed costs for products in this group were 7% lower in comparison with the control group. Due to the increase of per day milk productivity from one head, it is possible to get additional profit while feeding “Rumit” in the amount of 24.50 rubles, and while using “Celobacterin+” – 15.44 rubles.

scholarly journals The Effect of Thermal Environment on Daily Milk Yield of Dairy Cows

2016 ◽  
Vol 39 (2) ◽  
pp. 185-192 ◽  
Author(s):  
Metodija Trajchev ◽  
Dimitar Nakov ◽  
Sreten Andonov
Keyword(s):  
Dairy Cows ◽  
Milk Production ◽  
Milk Yield ◽  
Significant Influence ◽  
Air Temperatures ◽  
Hot Season ◽  
Environmental Air ◽  
Daily Milk Yield ◽  
The Impact ◽  
Daily Milk

AbstractThe primary objective of this research was to evaluate the impact of environmental air temperatures on the milk production of dairy cows. Therefore, the experiment was carried out at the height of summer (from 15th of June to 15th of September) in three small family dairy farms and one commercial dairy farm. In total, 51 dairy cows from the black-white breed were subjected to the study. The season of research was divided into three periods: the period before the hot season, the period of the hot season and the period after the hot season. In each period there were three test days selected that were used for recording the air temperature inside and outside the barns and cow’s daily milk yield. Unvaried associations between the test day milk yield of cows and independent environmental and cow factors were done using the linear mixed model for repeated measurements. The statistical model showed that the farm management system and the hot season of the year had significant influence on daily milk yield per cow at the level of p<0.001. The test day per periods of the season when milk control was performed and the average test day environmental temperature showed statistically significant influence on daily milk yield per cow at level p<0.01. The present results revealed that environmental air temperatures contributes to considerable loss in the milk production of dairy cows.

scholarly journals The effect of some environmental factors that affecting daily milk yield of Iraqi buffaloes in Ninewah

2012 ◽  
Vol 36 (2) ◽  
pp. 180-186
Author(s):  
Garabed A. Avadesian
Keyword(s):  
Milk Yield ◽  
Fixed Effects ◽  
Regression Coefficient ◽  
Heritability Estimate ◽  
Prediction Equation ◽  
Temperature Data ◽  
Maximum Temperature ◽  
Stage Of Lactation ◽  
Daily Milk Yield ◽  
Daily Milk

This study was carried out on the local buffalo in Ninewah, data were collected from154 buffalo in two herds during the period 1/7/2010 until 18/7/2010 in which milk collected daily in sequence ( 1st day , 5th day , 9th day , 13th day and 17th day ) and recording maximum and minimum temperature .Data were analyzed using general linear model ( GLM) within SAS program to study the fixed effects ( parity , herd , stage of lactation and test day ) , and regression coefficient with heritability . Overall average daily milk yield was 9.69 ± 0.12 kg and it appeared that parity , herd and stage of lactation has a highly significant effects in daily milk yield , while test day recorded no significant effect in the above . Minimum temperatures ranged (23.5 – 27.5 °C) and maximum was (41.8 – 45.6 °C). Regression coefficient for daily milk yield on maximum temperature was -0.259 kg / °C on (P > 0.01) and for minimum was 0.0325 kg / °C and this was non - significant, while the prediction equation (ŷ) was:Y^ (max) = 21.121 – 0.259 (X1)Y^ (min) = 8.863 + 0.0325 (X2)The heritability estimate for daily milk yield was ranged between (0.17 – 0.21) for the test day (recording day) , it was concluded that from this a number of fixed effects , and yield was decreased significantly with rising in ambient temperature and the estimates of heritability for daily milk yield belonged to test day was rather low.

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