The effect of age on milk productivity and reproductive qualities of dairy cows

Holodova, Lyudmila V.; Novoselova, K. S.; Mikhalev, E. V.; Onegov, Andrey V.; Чиргин, Е Д

doi:10.1088/1755-1315/315/2/022087

Cited by 4 publications

(4 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Therefore, dairy cows are used for milk production during their most economic and productive periods. The milk yield of dairy cows increases with age and decreases inversely proportional to aging after reaching the maximum level (Holodova et al, 2019). With a similar description, Grandl et al (2016), reported that milk production increases during the first few lactations, reaches a flatness between 5 and 8 lactations, and then begins to decrease.…”

Section: Discussionmentioning

confidence: 81%

“…De Vries and Marcondes (2020) were declared healthy cows mature fully in approximately the 5th lactation and produce the most milk in this period. Similarly, Holodova et al (2019) found that milk yield reached a peak in the 6th lactation. However, we determined that the lowest milk production was in 1st and 6th lactations and milk yield peaked in the 3rd and 4th lactations (p<0.05).…”

Section: Discussionmentioning

confidence: 85%

“…Lactation numbers can affect the milk yield and composition in dairy cows (Vijayakumar et al, 2017). It is also known that aging has an impact on milk production (Holodova et al, 2019). Dairy cows need to be fully matured for optimum milk production (De Vries and Marcondes, 2020).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Effect of lactation number on milk yield in Holstein dairy cows

Eşki

Kurt

2021

Turkish Journal of Veterinary Research

View full text Add to dashboard Cite

Objective: Aim of the present study was to determine the effect of the lactation number on milk production and to detect the most economical lactation period in Holstein dairy cows. Materials and Methods:The animal materials of the study were 392 Holstein dairy cows with a similar dry period and lactation length. The cows were divided into 6 groups according to the number of lactations. The groups were formed as 1st lactation (Group 1; n=67), 2nd lactation (Group 2; n=124), 3rd lactation (Group 3; n=51), 4th lactation (Group 4; n=62), 5th lactation (Group 5; n=41) and 6th lactation (Group 6; n=47).Results: Average lactation milk yields for the 1st, 2nd, 3rd, 4th, 5th, and 6th lactations of the cows used in the study were 7860.03 kg, 9010.02 kg, 10207.15 kg, 10165.89 kg, 8430.57 kg and 8069.78 kg, respectively. It was determined that the highest milk production and highest daily income were obtained during the 3rd and 4th lactation periods (p<0.05). Conclusion:In conclusion, milk production increased in the first three lactations, 3 and 4 lactation remained stable and decreased in 5th and 6th lactations. But, regardless of the number of lactations during the first 6 lactation periods, it is considered economical to use healthy cows for milk production in dairy farms.

show abstract

Section: Discussionmentioning

confidence: 81%

Section: Discussionmentioning

confidence: 85%

See 1 more Smart Citation

Effect of lactation number on milk yield in Holstein dairy cows

Eşki

Kurt

2021

Turkish Journal of Veterinary Research

View full text Add to dashboard Cite

show abstract

“…These metabolic-related diseases in dairy cattle appear during the period of intensive milk synthesis (mainly in the 1st lactation phase). The linking between the rumen microflora and the animal's body is relatively constant, but its equilibrium depends on one hand on the physiological and immunological status of the body, and on the other hand, on the quantitative and species composition as well as the biochemical activity of rumen microorganisms (5)(6)(7)(8).…”

Section: Introductionmentioning

confidence: 99%

Impact of Inclusion of Multicomponent Synbiotic Russian Holstein Dairy Cow's Rations on Milk Yield, Rumen Fermentation, and Some Blood Biochemical Parameters

et al. 2022

View full text Add to dashboard Cite

The purpose of this study was to appraise the effect of the inclusion of multicomponent synbiotic “Kormomix® Rumin” in feeding lactating Holstein cows on milk productivity, indicators of rumen fermentation metabolism, and some hematological and biochemical parameters of the blood. For this study, 40 highly productive Russian Holstein cows were selected according to their productivity, physiological condition, live weight, and age. They were divided into four groups (10 heads/each). All animals received the basal total mixed ration (TMR), which was balanced and corresponded to the nutritional requirements for cows during the milking period with a milk yield of 36 kg/daily. The first group (control) fed basal (TMR) only while the 2nd, 3rd, and 4th group fed the basal (TMR) supplemented with a multicomponent synbiotic “Kormomix® Rumin” in amounts 25, 50, and 75 g/head/day, respectively, which was administered manually and individually after morning feeding daily and mixing carefully together with the concentrates directly after calving until 120 DIM. Milk, ruminal fluid, and blood samples were collected for studying the studied parameters. The highest values in all studied milk parameters were recorded in the 2nd experimental group but the differences were not significant. The inclusion of “Kormomix® Rumin” increased significantly the synthesis of volatile fatty acids in the 2nd experimental group (9.38 vs. 7.04 mmol/100 ml) in the control group. The level of serum α-Amylase (total) decreased significantly in the 2nd experimental group compared with other groups. The urea level recorded the lowest value in the control group, while the urea/creatinine ratio recorded the lowest value in the 4th group and the differences were significant when compared with the 2nd group. Accordingly, the inclusion of synbiotic “Kormomix® Rumin” in the diets of lactating cows has no impact on milk production. Whereas, it improves the intensity of rumen fermentation, which contributes to more efficient utilization of feed without any harmful effects on blood traits. Moreover, the recommended dose for use in their diets is 25 g/head/day.

show abstract

The influence of Holstein crossbreeding on the reproductive qualities of Black-and-White cows

Титова

2022

Аграрная наука Евро-Северо-Востока

View full text Add to dashboard Cite

The purpose of the research was to study the main indicators of the reproductive ability of Black-and-White cows, depending on the proportion of Holstein genes. As the material for the research there were taken the data of breeding and zootechnical records of cows of Black-and-White breed of CJSC Semenovsky Breeding Plant of the Mari El Republic. The results of the research showed that with an increase in the proportion of thorough-bredness on the Holstein breed the reproductive ability of cows improved. Thus, the first-calf heifers with a low proportion of Holstein genes (up to 12.5 %) had the latest age of the first fruitful insemination and the first calving (21.9 months and 32.3 months). With an increase in thorough-bredness up to 87.6 % and more, the age for the first insemination decreased by 7.7 months (31.8 %), the age of the first calving - by 7.4 month (21.8 %), fertility index increased by 5.8 (14.6 %). At the same time, the duration of the service period in high-blooded animals increased by 18.8-26.4 days (15.8-23.8 %). The duration of the calving interval in all genetic groups exceeded the optimal time and changed in accordance with the change in the service period. The longest calving interval was in cows with the thorough-bredness degree of 87.6 % (13.8 months), which was 0.1-0.7 months longer than in animals of other genetic groups. There was a low coefficient of reproductive ability of the studied animals of all genetic groups ‒ 0.91-0.93. The significant influence of Holstein genes on the age for the first fruitful insemination (ɳ2 = 9.57 %), the first calving (ɳ2 = 8.80 %) and the fertility of cows (ɳ2 = 1.98 %) (P≤0.05) was established. The effect of the genotype on the duration of the service period and calving interval was weak (ɳ2 = 0.09 % and ɳ2 = 0.26 %) and unreliable.

show abstract

The effect of age on milk productivity and reproductive qualities of dairy cows

Cited by 4 publications

References 8 publications

Effect of lactation number on milk yield in Holstein dairy cows

Effect of lactation number on milk yield in Holstein dairy cows

Impact of Inclusion of Multicomponent Synbiotic Russian Holstein Dairy Cow's Rations on Milk Yield, Rumen Fermentation, and Some Blood Biochemical Parameters

The influence of Holstein crossbreeding on the reproductive qualities of Black-and-White cows

Contact Info

Product

Resources

About