Effect of Protein Concentrate Supplement on the Qualitative and Quantitative Parameters of Milk from Dairy Cows in Organic Farming

Horký, Pavel

doi:10.2478/aoas-2014-0008

Cited by 25 publications

(12 citation statements)

References 17 publications

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“…Dairy cattle kept in a free-stall system spend their entire lives in a barn, so a caretaker should provide everything that is optimal for their welfare (Gody n et al 2013;Hempel et al 2016). Suitable temperature, humidity conditions, ventilation and ammonia concentration are particularly important because they affect the cows' rest conditions, their behaviour, hormonal and metabolic changes and milk production (Herbut & Angrecka 2014;Horky 2014;Herbut et al 2015). One of the behavioural characteristics being an indicator of the cows' physiological and health state is their locomotor activity and the length of lying and standing bouts (Tolkamp et al 2010;Rado n et al 2014;Angrecka & Herbut 2017).…”

Section: Introductionmentioning

confidence: 99%

Relationship between THI level and dairy cows’ behaviour during summer period

Herbut

Angrecka

2017

Italian Journal of Animal Science

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The presented study determining the relationship between the Temperature Humidity Index (THI) value during the summer months (June-August) and daily behaviour of 40 Holstein-Friesian dairy cows, including the length of standing, laying bouts and locomotor activity. Behaviour observations were conducted on a preferences test concerning their choice to time and place of rest with respect to time duration of THI: neutral (maximum 3 h with THI ¼ 68), warm (time of THI > 68 occurrence lasted less than 12 h) and hot (time of THI > 68 occurrence lasted longer than 12 h). Obtained results was processed using analysis of the Spearman's correlation coefficient with significant at p < .05. The results showed a decrease in daily total lying time between the neutral and hot periods from 9.9 to 7.8 h/d. Along with the increase in THI by 1 unit between the warm and hot periods, there was observed a decrease in total lying time by 38 min/d in the cubicles. With an increase in the THI was also observed an increase by 15 min/d in the lying cows in the manure alleys during the night-time. During the warm and hot periods, the cows' activity showed a negative correlation with the increasing THI. Cows changed their behaviour during the summer depending on the prevailing environmental conditions. The behavioural studies on cows, without taking into account the variability of microclimate conditions, can lead to their inaccuracy and the misrepresentation of their results. ARTICLE HISTORY

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Section: Introductionmentioning

confidence: 99%

Relationship between THI level and dairy cows’ behaviour during summer period

Herbut

Angrecka

2017

Italian Journal of Animal Science

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“…The purpose of dairy farming is to achieve the highest possible milk yield while maintaining the welfare of the animals by, for example, suitable microclimate of the building (Albright and Timmons 1984;Cook et al 2005) especially in the case of meeting the essential cows' needs, such as constant access to food and water and/or relative changeless time of milking (Adamczyk et al 2011;Horky 2014).…”

Section: Introductionmentioning

confidence: 99%

Conditions for cold stress development in dairy cattle kept in free stall barn during severe frosts

Angrecka¹,

Herbut²

2015

Czech J. Anim. Sci.

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ABSTRACT:The impact of low temperatures combined with higher velocity of ventilated air in winter during severe frost in a free stall barn on the development of cold stress in Holstein-Friesian breed dairy cattle was studied. The study included measurements of outside and inside air parameters and cows' milk yield. Cold stress was evaluated in three technological groups (TG) using the WCT (Wind Chill Temperature) index. During the research, significant temperature and wind velocity differences (by up to 5°C and 0.5 m/s) were recorded in three zones of the barn occupied by the individual TG. All this resulted in different values of WCT. During most severe frosts lasting for 9 days, the average air temperature in the barn was -8.9°C (the lowest value was -17.3°C). The calculated average operative temperature for cows from all TG was as follows: -7.0°C for TG1, -11.1°C for TG2, and -12.3°C for TG3. It was also observed that animals from TG2 suffered from mild cold stress, which resulted in milk yield reduction by approximately 2 kg. It was concluded that there is a strong correlation (r = 0.72-0.89 with P < 0.05) between milk production and the WCT index. The measurements of most important microclimate parameters in the barn were conducted during winter seasons over the period of 2 years. They led to the conclusion that cattle kept in free stall barns are not vulnerable to the combination of low temperature and increased air movements. Research results of the present as well as of other authors were the basis for developing a table determining operative temperature for cows depending on the temperature of the environment and air movement velocity. Yet, the calculations and analysis of results show that there is a need to improve the applied calculation formula for operative temperature during cold weather.

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“…The result showed that the mean of S/C was lower and CR was higher both significantly (P<0.05) in dairy cattle having BUN<18 than those of with BUN>18 mg/dL (Table 2). Urea nitrogen in cow body fluids largely derives from a high protein intake of feed; the addition of concentrate in dairy feed will affect the quality and composition of milk (19). Increased feeding of high rumen degradable protein in dairy cows through the addition of concentrates potentially increases milk production by increasing protein synthesis in rumen (20).…”

Section: Resultsmentioning

confidence: 99%

Reproductive efficiency and serum progesterone concentration on dairy cattle based on blood urea nitrogen (BUN) concentrations

Putri¹,

Srianto²,

Lestari³

et al. 2019

IJVS

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The objective of this study was to identify the levels of Blood Urea Nitrogen (BUN) and its relation to the reproductive efficiency and serum progesterone concentration in lactating Holstein Friesian dairy cattle. Data were obtained by stratified random sampling from population to get 18 dairy cows, which divided into three groups. The first, second, and third groups each with milk yield of less than 17, between 17-21, and over 21 liters/day, and with calving interval of less than 365, between 365-450 and more than 450 days. Blood was collected from the coccygeal vein at the time of insemination (D0), 7 day (D+7) and 22 days (D+22) after insemination. BUN and progesterone concentration were measured. Data analysis showed no significant difference (P>0.05) on the observed parameters. Data regrouping based on BUN concentration showed that the mean of services per conception (S/C) was lower and conception rate (CR) was higher (P<0.05) in dairy cattle having BUN<18 than those of with BUN>18 mg/dL. The mean of progesterone concentration at D+22 was higher (P<0.05) than those at D0 and D+7 in pregnant dairy cows and with BUN<18 mg/dL, as well as those at D+22 in non-pregnant dairy cows with BUN>18 and BUN<18 mg/dL. This study concluded that high BUN concentration affect the reproductive efficiency of dairy cows by decreasing CR and increasing progesterone serum concentration.

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Effect of Protein Concentrate Supplement on the Qualitative and Quantitative Parameters of Milk from Dairy Cows in Organic Farming

Cited by 25 publications

References 17 publications

Relationship between THI level and dairy cows’ behaviour during summer period

Relationship between THI level and dairy cows’ behaviour during summer period

Conditions for cold stress development in dairy cattle kept in free stall barn during severe frosts

Reproductive efficiency and serum progesterone concentration on dairy cattle based on blood urea nitrogen (BUN) concentrations

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