scholarly journals Within-milking variation in milk composition and fatty acid profile of Holstein dairy cows

2014 ◽  
Vol 97 (7) ◽  
pp. 4259-4268 ◽  
Author(s):  
D.E. Rico ◽  
E.R. Marshall ◽  
J. Choi ◽  
K.E. Kaylegian ◽  
C.D. Dechow ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Dairy Cows ◽  
Fatty Acid Profile ◽  
Milk Composition ◽  
Holstein Dairy Cows

scholarly journals Milk composition, milk fatty acid profile, digestion, and ruminal fermentation in dairy cows fed whole flaxseed and calcium salts of flaxseed oil

2010 ◽  
Vol 93 (7) ◽  
pp. 3146-3157 ◽  
Author(s):  
C. Côrtes ◽  
D.C. da Silva-Kazama ◽  
R. Kazama ◽  
N. Gagnon ◽  
C. Benchaar ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Dairy Cows ◽  
Fatty Acid Profile ◽  
Milk Composition ◽  
Flaxseed Oil ◽  
Milk Fatty Acid ◽  
Ruminal Fermentation ◽  
Calcium Salts

Capacity of milk composition to identify the feeding system used to feed dairy cows

2017 ◽  
Vol 84 (3) ◽  
pp. 254-263 ◽  
Author(s):  
Fernando Vicente ◽  
Carme Santiago ◽  
José D Jiménez-Calderón ◽  
Adela Martínez-Fernández
Keyword(s):  
Fatty Acid ◽  
Dairy Cows ◽  
Fatty Acid Profile ◽  
Physiological State ◽  
Dynamic Change ◽  
Milk Composition ◽  
Maize Silage ◽  
Grass Silage ◽  
Total Variability ◽  
Feeding Systems

This Research Paper addresses the hypothesis that is possible to identify the type of feed used for dairy cows by means of the analysis of milk composition and the fatty acid profile of milk fat. Sixteen dairy farms were monitored during 1 year with quarterly visits between summer 2014 and spring 2015. Rations varied throughout the year due to annual dynamic change of forage production, forage rotation, variation of nutrient requirements according to physiological state of the animal, etc. The ingredients of the rations were analysed by cluster identifying five feeding systems based on the main ingredient of the diet: grazing, maize silage, grass silage, dry forage and concentrate. Milk composition could explain up to 91·3% of the total variability among feeding systems, while fatty acid profile could explain only up to 61·2% of total variability. However, when the sum of types of fatty acids and their ratios are taken, up to 93·5% of total variability could be explained. The maize silage system had the greatest milk yield, protein, solid non-fat and urea proportions, as well as the highest proportion of saturated fatty acid and lowest concentration of trans11 18 : 1, cis9 18 : 1 and 18 : 3 n3. Principal component analysis distinguishes the maize silage system from other feeding systems, both from milk composition and milk fatty acid profile. Concentrate system overlapped partially with the grazing, grass silage and dry forage systems. The latter systems had the highest concentrations of cis9 18 : 1, trans11 18 : 1 and 18 : 3, but there was no clear differentiation among them.

scholarly journals Fatty acid profile and composition of milk protein fraction in dairy cows fed long-chain unsaturated fatty acids during the transition period

2013 ◽  
Vol 42 (11) ◽  
pp. 813-823 ◽  
Author(s):  
Francisco Palma Rennó ◽  
José Esler de Freitas Júnior ◽  
Jefferson Rodrigues Gandra ◽  
Lenita Camargo Verdurico ◽  
Marcos Veiga dos Santos ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Dairy Cows ◽  
Fatty Acid Profile ◽  
Protein Fraction ◽  
Milk Protein ◽  
Unsaturated Fatty Acids ◽  
Transition Period ◽  
Long Chain

Effect of different roughages sources on performance, milk composition, fatty acid profile, and milk cholesterol content of feedlot feed crossbred cows (Holstein × Zebu)

2018 ◽  
Vol 51 (3) ◽  
pp. 599-604 ◽  
Author(s):  
Bismarck Moreira Santiago ◽  
Fabiano Ferreira da Silva ◽  
Robério Rodrigues Silva ◽  
Evely Giovanna Leite Costa ◽  
Antonio Ferraz Porto Junior ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Fatty Acid Profile ◽  
Cholesterol Content ◽  
Milk Composition ◽  
Crossbred Cows
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