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.

Relationship between udder and teat conformation and milk yield performance in dairy cows pre- and post-milking

2007 ◽  
Vol 87 (3) ◽  
pp. 285-289 ◽  
Author(s):  
Nilufer Sabuncuoglu ◽  
Omer Coban
Keyword(s):  
Dairy Cows ◽  
Milk Production ◽  
Milk Yield ◽  
Relative Reduction ◽  
Production Traits ◽  
Milk Production Traits ◽  
Simple Method ◽  
Absolute Reduction ◽  
Daily Milk Yield ◽  
Daily Milk

The objectives of this study were to determine the relationship between udder floor area (UFA) and milk production traits in dairy cows, pre- and post-milking, as well as to examine the usefulness of a simple method of measuring UFA. The absolute reduction (AR, cm2) and relative reduction (RR, %) in UFA post-milking relative to pre-milking was calculated. Absolute reduction was influenced by breed and lactation stage, but not by parity of the cows (P < 0.05). There was no effect of breed and stage of lactation on the RR of UFA. Moderate correlations were observed between absolute reduction of UFA and daily milk yield (r2 = 0.422), lactation milk yield (r2 = 0.426), and absolute fat yield (r2 = 0.515) (P < 0.01 and P < 0.05). Moderate and weak correlations were found between RR of UFA and daily milk yield (r2 = 0.335) (P < 0.01), AR of the udder area and the 305-d lactation milk yield (r2 = 0.326) (P < 0.10). It was concluded that measuring UFA using the method described may be useful for the selection of dairy cattle mammary conformation traits. Key words: Dairy cow, udder and teat conformation, milk production traits, measurement technique

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 PRODUKSI SUSU SAPI PERAH FRIESIAN HOLSTEIN (FH) PADA PERIODE LAKTASI YANG BERBEDA (Milk Production of Friesian Holstein (FH) Cows at Different Lactation Periods)

2020 ◽  
Vol 8 (2) ◽  
pp. 79-84
Author(s):  
Ali Mahmud ◽  
Woro Busono ◽  
Puguh Surjowardojo ◽  
Yuli Arif Tribudi
Keyword(s):  
Dairy Cows ◽  
Milk Production ◽  
Milk Yield ◽  
Analysis Of Variance ◽  
Lactation Period ◽  
Yield Production ◽  
Daily Milk Yield ◽  
Peak Lactation ◽  
Daily Milk ◽  
Holstein Dairy Cows

This research was conducted in PT Greenfields Indonesia, Babadan Village, Ngajum Districts, Malang, East Java. The purpose of the study was to compare the milk production of FH (Friesian Holstein) dairy cows in various lactation periods. The material used in this research was data records of Australian FH, which have been developed in the Greenfields Indonesia farm. The data used were from 473 dairy cows, which consisted of 100 heads for each lactation period from the period I up to period IV and 73 heads for lactation period V. The variables measured were milk production 305 day 2X ME, daily milk yield production, peak day production, and the peak lactation. The data were analyzed using analysis of variance, and if the result showed differences, the analysis was continued using the Duncan test. The results showed that the increase in the lactation period significantly (P<0.01) decreased milk production and increased the duration of lactation peaks of FH cows. The highest milk production 305 day 2X ME was in the lactation period II, which was around 10232.90 ± 1036.62 kg/lactation or 32 ± 5.13 kg/day. In this period, the peak day in milk lactation was 71.5 ± 27.5 days, and the peak of milk production was 45.7 ± 4.1 kg/day. In conclusion, milk production increased from the first lactation period to the second lactation period and then decreased in subsequent periods. The peak of the first lactation period was reached longer, then falls in the second lactation period and then increases again at the following lactation period

scholarly journals Comparative Evaluation of Lactation Curves of Crossbred Dairy Cows in Field Conditions in Tamil Nadu, India 

2021 ◽  
Author(s):  
C. Balan ◽  
M. Thirunavukkarasu
Keyword(s):  
Dairy Cows ◽  
Milk Production ◽  
Milk Yield ◽  
Tamil Nadu ◽  
Field Conditions ◽  
Crossbred Cows ◽  
Lactation Curve ◽  
Daily Milk Yield ◽  
Best Fit ◽  
Daily Milk

Background: Various mathematical models have been tried by different researchers to fit the lactation curves in indigenous, exotic and crossbred cows maintained in organised farms only. Hence, this study was aimed to fit various lactation models and to identify the best fit model (s) for prediction of milk production in crossbred dairy cows in field conditions.Methods: Multistage random sampling procedure was used for selection of 100 dairy cows for the purpose of data collection. The monthly milk yield data (up to 10 months of lactation) of the selected crossbred cows reared in field conditions of Tamil Nadu State, relating to the period from 2017-20, were collected for lactation curve modelling. The milk data so collected were used to fit 14 lactation curve models in the study. The highest Coefficient of Determination (R²) value and the least Root Mean Square Error (RMSE) value were used as the criteria to select the best fit model(s).Result: The overall average total milk production was estimated to be 2223.19 kg per lactation in 10 months of lactation in the selected crossbred cows. Average daily milk yield at the first month of lactation was 9.16 kg and the highest daily milk yield of 9.56 kg was observed at the second month of lactation. At the end of the lactation, the lowest yield was 5.01 kg per day and hence the overall average daily milk yield was found to be 7.41 kg. Based on the selection criteria, the Mitscherlich X Exponential model was identified as the best fit model, followed by Ali and Schaeffer and Morant and Gnanasakthy model for prediction of milk production in crossbred dairy cows reared in field conditions and the estimated lactation curve model parameters a, b, c and d values for the best fit model were 331.71, 1519.82, 9.56 and 0.07 kg, respectively. 

scholarly journals The Effect of Low Air Temperature on Behaviour and Milk Production in Holstein Dairy Cows

2017 ◽  
Vol 65 (5) ◽  
pp. 1623-1627
Author(s):  
Martina Vaculíková ◽  
Irena Komzáková ◽  
Gustav Chládek
Keyword(s):  
Dairy Cows ◽  
Milk Production ◽  
Milk Yield ◽  
Air Temperature ◽  
Body Side ◽  
Temperature Range ◽  
Yield Values ◽  
Daily Milk Yield ◽  
Daily Milk ◽  
Holstein Dairy Cows

The aim of this study was to evaluate the influence of low air temperature on behaviour and milk production in Holstein dairy cows. The experiment was carried out at a Mendel University Farm in Žabčice, CZ, between 06‑12‑16 and 28‑02‑17. The average outdoor temperature during the above mentioned period was 2.3 °C and the average barn temperature was 1.8 °C. Other known microclimatic parametres were (in average values): relative humidity (56.9 %), refrigerating quantity (37.3 W.m−2), light intensity (326.7 lx), and air flow (0.1 – 0.4 m.s−1). The values were always measured at 10:00 am. In the experiment, 75 Holstein dairy cows were observed. These cows were housed in free‑stall housing stable in which the number of boxes was higher than the number of housed cows there. The observed dairy cows were either standing (43.8 %) or lying (56.2 %). In case, they were standing, the most of them were found at trough (50.4 %), less of them were found in corridor (30.0 %), and the least of them were found in their boxes. In case, the dairy cows were lying, it was found more of them were lying on their left body side (58.7 %) and less on their right body side (43.8 %). The number of dairy cows standing in boxes had a decreasing character. Concerning the daily milk yield values, these had the same trend as the barn temperature, i.e., in 9 out of 11 cases. In this case (temperature range), the amoung of daily milk yield seems to be the best assessment factor for the infuence of temperature. It is necessary to dedicate attention to air temperature range, in which the experiment was carried out.

Locomotor activity and daily milk yield of dairy cows during the perioestrous period in successive lactations

2010 ◽  
Vol 27 (2) ◽  
pp. 111-119 ◽  
Author(s):  
Jan Miciński ◽  
Grzegorz Zwierzchowski ◽  
Wojciech Barański ◽  
Magdalena Gołębiowska ◽  
Miroslav Maršálek
Keyword(s):  
Locomotor Activity ◽  
Dairy Cows ◽  
Milk Production ◽  
Milk Yield ◽  
Herd Management ◽  
Holstein Friesian ◽  
Reproductive Cycles ◽  
Daily Milk Yield ◽  
Calving Intervals ◽  
Daily Milk

Locomotor activity and daily milk yield of dairy cows during the perioestrous period in successive lactationsThe experiment was conducted in a herd of high-producing Holstein-Friesian cows, using the AfiFarm Herd Management Software, to analyze their locomotor activity during 236 oestruses in relation to the daily milk yield determined during the periooestrous period in four successive production and reproductive cycles. Day "0" was the day of the observed oestrus. Locomotor activity and milk production levels were monitored five days before and five days after oestrus. A correlation was noted between high milk yield and the reproductive performance of cows. An increase in milk yield was accompanied by extended inter-pregnancy and inter-calving intervals and a drop in the insemination index which also tended to decrease in multiparous cows. Primiparous and the highest-yielding cows were characterized by the highest levels of locomotor activity. The physical activity of cows increased by around 67% during oestrus. However, daily milk yield declined at oestrus, compared with the average milk production levels determined five days before and five days after oestrus in each lactation. The installation of pedometers supported the detection of oestrus, including silent oestrus, in dairy cows, and the AfiFarm system was found to be an effective tool for dairy farming and herd management.

The Interleukin-8 gene polymorphism and its association with milk production traits in holstein cows

2017 ◽  
Author(s):  
Aswah Ridhowi ◽  
Hsiu-Luan Chang ◽  
Chia-Lin Liang ◽  
Suyadi . ◽  
Ming-Che Wu
Keyword(s):  
Milk Production ◽  
Milk Yield ◽  
Holstein Cows ◽  
Production Traits ◽  
Milk Production Traits ◽  
Cell Counts ◽  
Significant Difference ◽  
Daily Milk Yield ◽  
The Impact ◽  
Daily Milk

This study proposed to identify a polymorphism in the IL8 gene in Holstein cows and analyze the relationship with milk production traits in Taiwanese Holstein cows. Investigations were done for single nucleotide polymorphism at position 2862 and the impact of IL8-T2862C polymorphism on the milk production traits of 68 Holstein cows was randomly analyzed by fixed effects model. No significant difference was found between genotypes for 305-2X-ME, fat%, protein%, total solid%, and somatic cell counts score (SCS). Significanteffects were observed on daily milk yield (MY), SCC (p>0.05), and lactose% (p>0.01). Cows with the CC genotype had less SCC compared with CT and TT ones. The allelic substitution effect was 0.70 kg daily milk yield for IL8 favorable allele T (p>0.05), and 3.24 x 104 cells/mL SCC for IL8favorable allele C (p>0.01). Significant dominance effects of IL8-T2862C on daily milk yield (1.22 kg,p>0.05) and lactose% (+0.07%, p>0.01) were found.

Effect of Bypass Protein on Milk Production and Economic of Lactating Crossbred Cows

2020 ◽  
Vol 7 (01) ◽  
Author(s):  
RATNESH K CHOUDHARY ◽  
A Saran ROY ◽  
N K SINGH3 ◽  
SANJAY KUMAR ◽  
RAUSHAN K SINGH
Keyword(s):  
Milk Production ◽  
Milk Yield ◽  
Crossbred Cows ◽  
Lactating Cows ◽  
Feed Cost ◽  
Total Diet ◽  
T1 And T2 ◽  
Daily Milk Yield ◽  
On Farm ◽  
Daily Milk

An On-Farm Trial was conducted on 24 lactating crossbred cows for assessment of feeding formaldehyde treated mustard cake (bypass protein) on milk production and economic analysis of lactating cow. Cows were divided into three groups having 8 cows each, treatments were farmers’ practice (FP); (Control): The lactating animals under this group were fedas per the feeding schedule of the farmers (5 kg. dry roughage as rice straw + 6 hrs grazing as local grass and 4 kg. commercial concentrates), T1: The lactating animals under this group were fed as per farmers practicewith 12% mustard cake of total diet was provided to the cow by replacing the same amount of commercial concentrates andT2: The lactating animals under this group were fed as per farmers practicewith 12% formaldehyde treated mustard cake of total diet was provided to the cow by replacing same amount of commercial concentrates. The average daily milk yield of lactating cows under FP, T1 and T2 was 8.58, 8.82 and 9.85 kg per cow, respectively. Differences between FP and T2 were significant. The daily increase in milk yield was 1.27 kg and 1.03 kg in cows fed T2diet over the cows fed FP and T1diet, respectively. The B: C ratios for FP, T1 and T2 groups were 2.6, 3.0 and 3.3, respectively. The feed cost reduced in T2 group by Rs. 8.64 and increased milk production by 1.27 kg in respect to FP group.

scholarly journals Milk production and its relationship with milk composition, body and udder morphological traits in Bedouin goat reared under arid conditions

2018 ◽  
Vol 41 (1) ◽  
pp. 42552
Author(s):  
Fatima Kouri ◽  
Salima Charallah ◽  
Amina Kouri ◽  
Zaina Amirat ◽  
Farida Khammar
Keyword(s):  
Body Weight ◽  
Milk Production ◽  
Milk Yield ◽  
Milk Fat ◽  
Morphological Traits ◽  
Growth Traits ◽  
Average Daily Gain ◽  
Arid Conditions ◽  
Daily Milk Yield ◽  
Daily Milk

 This research aims to assess the performances of lactating Bedouin goat under arid conditions, focusing on the relationship of milk yield with body and udder morphology and growth traits. Fourteen goats and their kids were followed during early lactation (90 days post-partum). Mean daily milk yield was 0.56 kg. Milk fat, proteins, lactose, solids non-fat and minerals were respectively 34.9, 38.9, 48.8, 107 and 6.7 g L-1. Mean kids’ birth weight, adjusted body weight at 90 days of age and average daily gain were respectively 2 kg, 6.6 kg and 51.4 g day-1. Daily milk yield was correlated with goats’ body weight, withers height, rump height, udder width and udder circumference but not with linear udder score and growth performances. These results provide important data about the milk production of Bedouin goat emphasizing its correlation with body and udder morphological traits which can help to elaborate a specific breeding program for this breed. 

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