Quality analysis of 576 milk samples, obtained from the eight controls was performed in 2015 at the didactics UASVM farm from Cojocna. The biological material was represented by a 107 cows of Romanian spotted breed. On this population, individual and overall, were analized more aspects: productive performances and the main milk quality indicators such as fat, protein, lactose, pH, with particular reference to somatic cell counts as the main indicator of subclinical mastitis and the content of urea as the main indicator of nutritional aspects of the dairy cows. Following the official control of milk production, it was found that the milk production was on average 14.76 kg/day with a quite high values of coefficient of variability, between 31.05% and 40.47%, depending on the controls, which indicating a strong heterogeneity of this trait. The chemical characteristics of 576 samples showed considerable variations from one control to another. The amount of total fat and protein was found to be on average of 3.92% and 3.37% respectively. Regarding the content of urea and somatic cells, in all tested milk samples, the lowest value was found in the fifth control, with an average of 8.04±0.6 mg/dl and 69.20±23.3 cell/mlx103, while the highest was in the first control 19.37±0.7 mg/dl for urea, and 263.17±31.7 cell/mlx103 for the somatic cells.
One of the main objectives in dairy cows exploitation is to guarantee food security and safety of the population, a desideratum achieved through better milk quality and better control of production in all aspects imposed by the health and welfare of animals from which milk is obtained. The purpose of this sciencific paper is to highlight the status of mammary gland health in a population of Friesian-Black Spotted breed based on the main traits of milk quality, with particular reference to somatic cell counts as the main indicator of subclinical mastitis. The research was conducted in 2014 within the farm S.C. Modern Farm S.R.L., located in Jucu village. The individual analysis of Holstein Friesian milked cows was performed, the main indicators of milk production were analysed both quantitatively, based on production obtained daily, and especially qualitatively, based on seven controls with individual sampling from all milked cows at the date of control. Qualitative analysis of 1,391 milk samples highlighted the fact that the somatic cell count in milk obtained from cattle included in this study recorded an average value of 390.54 ± 11.16 cells/ml x 10 3 with the variability between controls of 314.94 ± 28.93 and 482.36 ± 91.12 cells/ml x 10 3 Regarding the fat content, the average values was 4.19%, 3.63% for protein content, a pH value of 6.56 and the values of urea was 20.09 mg/dl. Individual analysis also revealed some cows with subclinical mastitis, which were milked separately, verified and monitored supplementarily in order to reestablish udder health and to prevent the occurrence of clinical mastitis, which can compromise the mammary gland.
In order to increase the quantity and quality of milk production, animal fertility and natality, many dairy farmers grow specialized dairy breeds, including Red Holstein breed, or practice some crossbreeding with those breeds. The aim of this work was to determine the production potential of Red Holstein cows, and milk quality, in terms of somatic cell count and total germ number. The study was conducted on a herd of 20 Red Holstein cows from the S.C. Agro Laura farm, Sălaj County, which was analysed in terms of quantity and quality of milk produced in 2012-2014. The amount of milk was estimated based on daily production obtained from the total number of milked cows, while milk quality was established based on milk samples collected monthly and analysed by standard procedure in a specialised laboratory. In the analysis performed we found that daily milk production was on average about 22.4 kg/head, while somatic cell count and total number of germs were within the standard limits of 136-506 cells/ml x 10 3 , with an average of 258 cells/ml x 10 3 , and 24-279 germs/ml x 10 3 , with an average of 120.5 germs/ml x 10 3 . This research has confirmed the good potential for milk production of the studied cattle breed, with the productive performance over 10,000 kg milk, close to the real genetic potential of the breed.
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