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 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

scholarly journals The influence of grass silage-to-maize silage ratio and concentrate composition on methane emissions, performance and milk composition of dairy cows

animal ◽  
2015 ◽  
Vol 9 (6) ◽  
pp. 983-991 ◽  
Author(s):  
K.J. Hart ◽  
J.A. Huntington ◽  
R.G. Wilkinson ◽  
C.G. Bartram ◽  
L.A. Sinclair
Keyword(s):  
Dairy Cows ◽  
Milk Composition ◽  
Methane Emissions ◽  
Maize Silage ◽  
Grass Silage

scholarly journals Meat quality and fatty acid profile of the musculus longissimus lumborum in Czech Fleckvieh, Charolais and Charolais × Czech Fleckvieh bulls fed different types of silages

2010 ◽  
Vol 55 (No. 11) ◽  
pp. 479-487 ◽  
Author(s):  
L. Bartoň ◽  
D. Bureš ◽  
V. Kudrna
Keyword(s):  
Fatty Acid ◽  
Meat Quality ◽  
Fatty Acid Profile ◽  
Dry Matter ◽  
Intramuscular Fat ◽  
Quality Parameters ◽  
Dietary Energy ◽  
Maize Silage ◽  
Different Types ◽  
Longissimus Lumborum

The effects of breed and diet containing different types of silages on meat quality parameters and fatty acid profile of m. longissimus lumborum (MLL) were evaluated in a total of 30 Czech Fleckvieh (CF), Charolais (CH) and Charolais × Czech Fleckvieh (CH × CF) bulls. The animals were fed two mixed diets: MS (based on maize silage) and LCS (based on legume-cereal mixture silage and lucerne silages) with different concentrations of dietary energy and fatty acids. The MLL from CH bulls had the lowest content of dry matter (P < 0.01), less protein (P < 0.01) and lighter meat (P < 0.01) compared to the CF. The extensive LCS diet reduced dry matter (P < 0.01) and intramuscular fat (P < 0.01) and increased the content of hydroxyproline (P < 0.05). The CH bulls exhibited higher PUFA n-3 (P < 0.05) and lower MUFA (P < 0.05) compared to the CF, with the CH × CF being intermediate. The LCS diet enhanced the proportions of PUFA (P < 0.05) and PUFA n-3 (P < 0.001) and reduced MUFA (P < 0.001). In conclusion, both breed and diet affected the meat quality and fatty acid profile of the intramuscular fat of the bulls. The replacement of maize silage with the legume-cereal mixture and lucerne silages in the diet reduced the concentration of intramuscular fat and improved its fatty acid profile from the human nutrition perspective.

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

Acidogenicity of feeds for dairy cows. 2. Production responses

1998 ◽  
Vol 1998 ◽  
pp. 206-206
Author(s):  
R.J. Dewhurst ◽  
D. Wadhwa ◽  
L.P. Borgida ◽  
D.W.R. Davies ◽  
W.J. Fisher
Keyword(s):  
Dairy Cows ◽  
Milk Protein ◽  
Latin Squares ◽  
Standard Diet ◽  
Lactation Performance ◽  
Maize Silage ◽  
Beneficial Effects ◽  
Grass Silage ◽  
Holstein Friesian ◽  
Friesian Cows

Falling prices for cereals and beneficial effects on milk protein concentrations may promote greater inclusions of rapidly fermented ingredients in dairy rations. There is, however, a limit to the inclusion of these feeds into dairy rations beyond which performance declines due to sub-acidosis and related disorders. The feed compounder will need to be able to set limits on levels of feeding concentrates according to these risks. The objective of this experiment was to evaluate the effect of feeds of different acidogenicity (Wadhwa et al., 1998) on lactation performance of dairy cows offered diets based on grass- or maize-silage.Twelve multiparous Holstein-Friesian cows in the third month of lactation were used for this experiment. The experimental design involved adaptation and covariance recording on a standard diet (grass silage and 10 kg concentrates per day), followed by three 21-day experimental periods arranged as four 3x3 Latin Squares. The Latin Squares were constrained to a single forage to avoid difficulties in changeovers between grass silage and maize silage.

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