The influence of the season and milking time on the properties and the fatty acid composition of the milk in different dairy cattle farms

Özcan, Tülay; Yaslıoğlu, Erkan; Kılıç, İlker; Şimşek, Ercan

doi:10.15567/mljekarstvo.2015.0102

Cited by 11 publications

(12 citation statements)

References 46 publications

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“…In our study, content of C18:2n6 and CLA was not affected by the season. Similar findings were reported by Lindmark-Månsson et al (2003), Frelich et al (2012) and Ozcan et al (2015). In contrast, Collomb et al (2008) and Adler et al (2013) observed a positive effect of the outdoor/summer season on content of these two FAs (P < 0.05).…”

Section: O Hanuš Et Al: the Effect Of Cattle Breed Season And Dietsupporting

confidence: 88%

“…Higher values of C18:3n3 in S were also reported in other studies (Lindmark-Månsson et al, 2003;Lock and Garnsworthy, 2003;Collomb et al, 2008;Wiking et al, 2010;Adler et al, 2013). On the other hand, Frelich et al (2012) and Ozcan et al (2015) found no effect of season on C18:3n3 content. In our study, content of C18:2n6 and CLA was not affected by the season.…”

Section: O Hanuš Et Al: the Effect Of Cattle Breed Season And Dietsupporting

confidence: 78%

“…Similar findings were reported by Adler et al (2013), who found higher proportions of total SFAs and most short-and medium-chain SFAs in milk from the indoor feeding season compared to the outdoor feeding season. A positive effect of season on SFA proportion has also been proved by Lindmark-Månsson et al (2003), Collomb et al (2008) and Ozcan et al (2015), with the highest differences mainly in C16:0 and C18:0. Frelich et al (2012) described lower content of short-chain SFAs (C4:0 − C10:0) and C12:0 in S compared to W in herds kept indoors (P < 0.05).…”

Section: O Hanuš Et Al: the Effect Of Cattle Breed Season And Dietsupporting

confidence: 52%

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The effect of cattle breed, season and type of diet on the fatty acid profile of raw milk

et al. 2016

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Abstract. The aim of the study was to determine the effect of cow breed, season and type of diet on the fatty acid (FA) profile of raw milk. A 2-year study was conducted on bulk milk samples collected from eight herds consisting of Czech Fleckvieh (CF, four herds) and Holstein (H, four herds) breeds. One half of the herds of each breed was grazed (G), while the other half was not (N). Samples were collected twice in winter (W) and twice in summer (S). Milk yield in CF (5385.50 kg) was lower than in H (7015.15 kg, P < 0.05). The effect of breed was found in odd-chain, branch-chain and hypercholesterolemic FAs (P < 0.05). The content of fat was lower in summer (S) than in winter (W), being 3.71 and 3.91 g 100 g −1 , respectively (P < 0.05). The proportion of saturated and polyunsaturated FAs was lower in S than in W (P < 0.05). The content of monounsaturated FAs was higher in S (30.69 g 100 g −1 ) than in W (27.72 g 100 g −1 , P < 0.05). Milk yield in grazing herds (G, 5197.50 kg) was lower (P < 0.05) than in non-grazing herds (N, 7203.75 kg). The sum of saturated and hypercholesterolemic FAs was lower and the sum of monounsaturated and odd-chain FAs was higher in G than in N (P < 0.05). Content of conjugated linoleic acid (CLA) and C18:3n3 was higher in G (0.93 and 0.64 g 100 g −1 ) than in N (0.42 and 0.39 g 100 g −1 , respectively, P < 0.001).

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Section: O Hanuš Et Al: the Effect Of Cattle Breed Season And Dietsupporting

confidence: 88%

Section: O Hanuš Et Al: the Effect Of Cattle Breed Season And Dietsupporting

confidence: 78%

Section: O Hanuš Et Al: the Effect Of Cattle Breed Season And Dietsupporting

confidence: 52%

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The effect of cattle breed, season and type of diet on the fatty acid profile of raw milk

et al. 2016

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“…According to Chilliard et al (2003) all these factors influenced free fatty acid (FFA) content or rather lipolysis rate in milk samples. Mentioned statement was also confirmed in study Ozcan et al (2014), who observed differences in the content of fatty acids in milk between periods of the year. The aim of the study was to evaluate relations between basic milk components and FFA content in raw milk with respect to the spontaneous and/or induced lipolysis activity using the linear regression functions and the correlation coefficients.…”

Section: Resultsmentioning

confidence: 62%

Relations between basic milk components and free fatty acid content in Holstein cow milk as lipolysis parameter

et al. 2015

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The aim of this study was to evaluate in detail the relationship between the basic milk components (fat and protein percentage) and the free fatty acids (FFA) content, as indicators of spontaneous and/or induced lipolysis. The additional aim of the study was to compare the FFA content of milk with respect to spontaneous and induced lipolysis. Milking was carried out in herringbone parlour twice a day. In total, 540 milk samples were obtained for evaluation of spontaneous (n=240) and induced lipolysis (n=300). The milk samples for determination of basic milk components and FFA (lipolysis) levels were collected during four subsequent lactation weeks. Milk samples for spontaneous lipolysis detection were taken directly in parlour immediately after milking using the ICAR methodology and subsequently grouped. Induced lipolysis was observed from bulk milk in time 0, 1, 2, 3, and 4 hours after milking (T0-T4). The evaluation of basic components and FFA content was carried on MILKOSCAN F120 (Foss Electronic; Denmark). Statistical evaluation was carried out using SAS 9.3. (SAS/STAT ® 9.3, 2011). An increase of one percentage of milk fat was equal to 0.318 mmol x 100 g -1 FFA decline (spontaneous lipolysis) or from 0.232 to 0.370 mmol x 100 g -1 FFA decline (induced lipolysis T0-T4) respectively. One percentage increase of milk protein was equal to 1.219 mmol x 100 g -1 FFA increase (spontaneous lipolysis) or 0.421 to 1.531 mmol x 100 g -1 FFA decrease (induced lipolysis T0 -T4) respectively. Significant differences (P<0.01) were detected among FFA content in relation to spontaneous and induced lipolysis evaluated during storage and cooling after milking. The minimal differences were detected between the FFA content during 4 hours cooling and storage of milk in the tank.

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“…It is possible that organic source of dietary Se increased plasma content of PUFA and inhibited that way the delta-9 desaturase activity. The contribution from mobilized oleic acid in early lactation and/or in negative energy balance must also be taken into account since as stated before oleic fatty acid is one of the major stored fatty acids in ruminants (Ozcan et al, 2015) Since no statistical difference of fatty acid ration between LS and LS+Se group was evident in plasma, we can presume that major difference between ratios of some fatty acids in milk was due to the metabolic changes in the milk gland.…”

Section: Milk Fatty Acid Compositionmentioning

confidence: 96%

Plasma and milk fatty acid composition as a response to dietary n-3 fatty acids and selenium in periparturient Holstein cows

et al. 2017

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Linseed is well known for abundant content of α-linolenic acid why it has been widely used as a source of n-3 fatty acid. Higher ratio of polyunsaturated fatty acids can increase lipid peroxidation. Selenium (Se) plays a key role in antioxidant enzymes and can therefore be regarded for use in attempts focused on protection of fatty acids from oxidation. The organic Se has been shown to have higher bioavailability compared to the inorganic selenium. The aim of this research was to determine the influence of dietary replacement of n-6 with n-3 polyunsaturated fatty acids on plasma and milk fatty acid composition in the dairy cows. The experiment was conducted on 30 dairy Holstein cows in the period from parturition until the 3 rd week of lactation. Soybean meal from control (C) group was replaced with grounded linseed in the both experimental (LS and LS+Se) groups. In addition to that, in the 2 nd experimental (LS+Se) group sodium selenite from premix was replaced with organic selenium. Blood and milk samples were collected at 21 st day of lactation and fatty acids were determined using gas chromatography from it. Feeding dairy cows during transition period with linseed showed a positive impact on milk fatty acid composition by increasing (P<0.05) the proportion of n-3 fatty acids. Proportion of α-linolenic fatty acid increased (P<0.05) in the blood of both groups fed with linseed, but was significant (P<0.05) only in milk of LS+Se group. Such data indicated that the addition of organic selenium acted favourable on α-linolenic fatty acid increase in milk. During early postpartum period addition of linseed in meal of dairy cow's increased (P<0.05) ratio of oleic acid, but in combination with organic source of selenium this increase was not evident (P>0.05).

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The influence of the season and milking time on the properties and the fatty acid composition of the milk in different dairy cattle farms

Cited by 11 publications

References 46 publications

The effect of cattle breed, season and type of diet on the fatty acid profile of raw milk

The effect of cattle breed, season and type of diet on the fatty acid profile of raw milk

Relations between basic milk components and free fatty acid content in Holstein cow milk as lipolysis parameter

Plasma and milk fatty acid composition as a response to dietary n-3 fatty acids and selenium in periparturient Holstein cows

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