scholarly journals Changes in fatty acid profile and iodine content in milk as influenced by the inclusion of extruded rapeseed cake in the diet of dairy cows

2009 ◽  
Vol 54 (No. 5) ◽  
pp. 201-209 ◽  
Author(s):  
A. Veselý ◽  
L. Křížová ◽  
J. Třináctý ◽  
S. Hadrová ◽  
M. Navrátilová ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Dairy Cows ◽  
Fatty Acid Profile ◽  
Milk Fat ◽  
Daily Intake ◽  
Total Content ◽  
Iodine Content ◽  
Experimental Period ◽  
Iodine Concentration ◽  
Rapeseed Cake

The aim of the study was to evaluate the effect of extruded rapeseed cake in diets of dairy cows on changes in milk fatty acid profile and iodine content in milk and on the thyroid gland status. An experiment was carried out on four lactating Holstein cows divided into 2 groups – experimental (R) fed a diet based on extruded rapeseed cake and control (S) fed a diet based on extruded full-fat soya. The experiment was divided into 4 periods of 42 days (21 days of preliminary period and 21 days of experimental period). Samples of milk and blood were taken three times a week during the experimental period. DMI was not affected by the treatment (<i>P</i> > 0.05). Milk yield and 4% FCM were lower in R compared to S (<i>P</i> < 0.05). Percentages of milk fat and protein were higher in R than in S (<i>P</i> < 0.05). The total content of SFA and UFA was not affected by the treatment (<i>P</i> > 0.05). However, the content of MUFA in R was higher (34.71 g/100 g) and the content of PUFA was lower (4.00 g/100 g) than in S (32.14 and 5.54 g/100 g, respectively (<i>P</i> < 0.05). The contents of C18:2 and C18:3 isomers and metabolites in R were lower than in S (<i>P</i> < 0.05). The content of <I>cis</I>-9, <I>trans</I>-11 CLA and <I>trans</I>-10, <I>cis</I>-12 CLA was lower in R (0.71 and 0.016 g/100 g) compared to S (0.97 and 0.022 g/100 g, respectively, <i>P</i> < 0.05). The index of atherogenicity and peroxidisability in R was lower than in S (<i>P</i> < 0.05). The index of desaturation was not affected by the treatment (<i>P</i> > 0.05). The mean daily intake of glucosinolates (Gls) in R was 50.14 mmol and resulted in a significant decrease in iodine concentration in milk in R (196.7 &mu;g/l) in comparison with S (367.0 &mu;g/l, <i>P</i> < 0.05) resulting in the lower daily iodine output in milk in R compared to S (4.4 and 9.2 mg/day, respectively, <i>P</i> < 0.05). Concentrations of T<sub>3</sub> and T<sub>4</sub> in blood plasma were not affected by the treatment (<i>P</i> > 0.05).

scholarly journals Milk fatty acid profile from grazing buffaloes fed a blend of soybean and linseed oils

2015 ◽  
Vol 67 (3) ◽  
pp. 927-934 ◽  
Author(s):  
G.A. Gagliostro ◽  
E.M. Patiño ◽  
M. Sanchez Negrette ◽  
G. Sager ◽  
L. Castelli ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Milk Fat ◽  
Nutritional Value ◽  
Milk Protein ◽  
Vaccenic Acid ◽  
Total Content ◽  
Experimental Period ◽  
Fat Content ◽  
Milk Fatty Acid ◽  
Milk Protein Content

The aim of the study was to examine the changes in milk fatty acid (FA) profile of grazing buffaloes fed either low (L, 276g/d) or high (H, 572g/d) doses of a blend (70:30, wt/wt) of soybean and linseed oils. Fourteen multiparous Mediterranean buffaloes grazing on a native pasture were fed 4 kg/day of a commercial concentrate containing no supplemental oil over a pre-experimental period of ten days. The baseline milk production and composition and milk FA profile were measured over the last three days. After this pre-experimental period the animals received the same concentrate added with either the L or H oil doses for 26 additional days. Milk yield (g/animal/day) did not differ at the start (1776 ± 522 and 1662 ± 291 for L and H, respectively, P<0.622) or at the end of the trial (4590 ± 991 and 4847 ± 447 in L and H, respectively, P<0.543). Baseline milk fat content (g/kg) averaged 77.1 (±20.5) in L and 74.3 (±9.9) in H (P<0.10) and was reduced (P<0.031) to 60.7 (±23.6) and 49.4 (±11.2) (P<0.0031) respectively after L and H with no differences between treatments (P<0.277). Baseline milk protein content (L=43.2 ± 3.4 and H= 44.3 ± 6.9g/kg) increased after oil supplementation (P<0.0001) in both L (73.2 ± 6.0g/kg) and H (68.4 ± 4.9g/kg) without differences between oil doses (P<0.123). Milk fat content of 14:0 decreased after oil supplementation only in the H treatment (5.29 to 4.03, P<0.007) whereas that of 16:0 was reduced (P<0.001) at both L (24.49 to 19.75g/100g FA) and H (25.92 to 19.17g/100g FA) doses. The reduction of total content of 12:0 to 16:0 was higher (P<0.052) in H (32.02 to 23.93g/100g FA) than L (30.17 to 25.45g/100g FA). Vaccenic acid content increased (P<0.001) from 5.70 to 13.24g/100g FA in L and from 5.25 to 16.77 in H, with higher results in the in H treatment (P<0.001). Baseline rumenic acid was sharply increased (P<0.001) in L (1.80 to 4.09g/100g FA, +127%) and H (1.60 to 4.61g/100g FA, +187%) with no differences between L and H (P<0.19). Overall, these results indicate a pronounced improvement in the nutritional value of milk fat from grazing buffaloes fed little amounts (0.276g/day) of a blend of soybean and linseed oils.

scholarly journals Postruminal infusion of calcium gluconate increases milk fat production and alters fecal volatile fatty acid profile in lactating dairy cows

2019 ◽  
Vol 102 (2) ◽  
pp. 1274-1280 ◽  
Author(s):  
John Doelman ◽  
Leslie L. McKnight ◽  
Michelle Carson ◽  
Kelly Nichols ◽  
Douglas F. Waterman ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Dairy Cows ◽  
Fatty Acid Profile ◽  
Calcium Gluconate ◽  
Milk Fat ◽  
Volatile Fatty Acid ◽  
Lactating Dairy Cows

scholarly journals Effect of supplemental rumen-protected lysine, methionine or both added to diet of lactating dairy cows on milk fatty acids profile

2010 ◽  
Vol 58 (1) ◽  
pp. 87-94 ◽  
Author(s):  
Ludmila Křížová ◽  
Jiří Třináctý ◽  
Jarmila Svobodová ◽  
Michal Richter ◽  
Vladimír Černý ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Dairy Cows ◽  
Milk Fat ◽  
Latin Square ◽  
Total Content ◽  
Experimental Period ◽  
Maize Silage ◽  
Milk Fatty Acids ◽  
Fatty Acids Profile ◽  
Lactating Dairy Cows

The objective of this study was to determine the effect of supplemental lysine (Lys), methionine (Met) or both added to diet of dairy cows in the form of rumen-protected (RP) tablets on changes in milk fatty acids (FA) profile. The trial was carried out on four lactating Holstein cows in the form of Latin square design and was divided into 4 periods of 14 d (10-d preliminary period and a 4-d experimental period). The four treatments were as follows: C – control without amino acids (AA) supplementation, L – supplement of RP Lys, M – supplement of RP Met and ML – supplement of RP Met and Lys. Cows were fed on a diet based on maize silage, lucerne hay and supplemental mixture. Milk yield in ML (34.18 kg/d) was higher than in L or M (32.46 kg and 32.13 kg, respectively, P < 0.05) and tended to be higher than in C (33.33 kg/d, P > 0.05). Protein yield in ML (1054 g / d) was higher than that found in C, L or M (990, 998 or 968 g / d, respectively, P < 0.05). Milk fat content and yield in C and ML was higher in comparison to L and M (P < 0.05). Content of short-chain FA (C 4:0–C 12:0) was not affected by the treatment except of L that was lower than in C (P < 0.05). Content of medium-chain FA in M was lower compared to C, L or ML (P < 0.05). The content of long-chain FA in M was significantly higher than in other groups (P < 0.05). The total content of SFA in M was lower than in C or ML (P < 0.05) and tended to be lower than in L. Contents of UFA, MUFA and PUFA in M were higher than in C and ML (P < 0.05).

scholarly journals Milk iodine concentration in cows treated orally or intramuscularly with a single dose of iodinated fatty acid esters

2012 ◽  
Vol 48 (No. 6) ◽  
pp. 155-162 ◽  
Author(s):  
I. Herzig ◽  
J. Poul ◽  
B. Písaíková ◽  
E. Göpfert
Keyword(s):  
Single Dose ◽  
Fatty Acid ◽  
Oral Dose ◽  
Dairy Cows ◽  
Single Oral Dose ◽  
Experimental Period ◽  
Iodine Concentration ◽  
Fatty Acid Esters ◽  
Oral Application ◽  
Acid Esters

The effect of a single oral dose of iodinated fatty acid esters (IFAE) on iodine levels in colostrum and milk of goats was tested. In experimental goats that received a single oral dose of IFAE before delivery, significantly higher iodine levels in milk were recorded 60 days after the delivery. In the following period since day 75 after the delivery iodine levels decreased, however, remained higher compared to the control, e.g. on day 152 the levels were twice as high as in the controls. Based on these results, the effect of a single oral and parenteral application of IFAE was tested on dairy cows. The results of the experiment showed that a single oral application of IFAE increases milk iodine levels for a shorter period. Intramuscular application resulted in a significantly higher milk iodine levels during the whole experimental period compared to both untreated controls and cows with oral application of IFAE.

scholarly journals Effects of Monensin and Dietary Soybean Oil on Milk Fat Percentage and Milk Fatty Acid Profile in Lactating Dairy Cows

2008 ◽  
Vol 91 (3) ◽  
pp. 1166-1174 ◽  
Author(s):  
O. AlZahal ◽  
N.E. Odongo ◽  
T. Mutsvangwa ◽  
M.M. Or-Rashid ◽  
T.F. Duffield ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Soybean Oil ◽  
Dairy Cows ◽  
Fatty Acid Profile ◽  
Milk Fat ◽  
Milk Fatty Acid ◽  
Fat Percentage ◽  
Lactating Dairy Cows

scholarly journals Nutrients balances and milk fatty acid profile of mid lactation dairy cows supplemented with unsaturated fatty acid

2013 ◽  
Vol 14 (2) ◽  
pp. 322-335
Author(s):  
Jose Esler de Freitas Júnior ◽  
Francisco Palma Rennó ◽  
Jefferson Rodrigues Gandra ◽  
Luciana Navajás Rennó ◽  
Gustavo Henrique Rodrigues ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Dairy Cows ◽  
Fatty Acid Profile ◽  
Milk Yield ◽  
Unsaturated Fatty Acid ◽  
Milk Fat ◽  
Unsaturated Fatty Acids ◽  
Energetic Efficiency ◽  
Milk Fatty Acid

The objective was to evaluate the effect of unsaturated fatty acid sources supplementation on nutrients balances and milk fatty acid profile of mid lactation dairy cows. Twelve Brazilian Holstein cows in the mid lactation (mean of 128 days) and (580 ± 20kg of weight; mean ± SD) with milk yield of 25kg/d were assigned randomly into three 4 x 4 Latin square, fed the following diets: control (C); refined soybean oil; (SO); whole soybean raw (WS) and; calcium salts of unsaturated fatty acids (CSFA). Milk yield was 26.6; 26.4; 24.1 and 25.7 to the diets CO, SO, WS and CSFA respectively. Cows fed the WS treatment produced less milk (1.95kg/d of milk), fat and lactose than did cows fed the SO and CSFA. Cows fed the CSFA treatment showed less blood, urine (g/d) concentrations of N more energetic efficiency and intake of energy than did cows fed the SO treatment. Cows fed the unsaturated fatty acids sources showed more C18:2 cis-9, trans-11 CLA and trans-C18:1 FA concentration in milk than did cows fed the CO treatment. Diets with whole soybeans and soybeans oil provide more efficient digestive processes, and increase milk composition of unsaturated fatty acids.

scholarly journals The effects of supplementation with sunflower and soybean oils on the fatty acid profile of milk fat from grazing dairy cows

2005 ◽  
Vol 54 (1) ◽  
pp. 17-24 ◽  
Author(s):  
Oldemiro A. Rego ◽  
Henrique J.D. Rosa ◽  
Paula V. Portugal ◽  
Tiago Franco ◽  
Carlos M. Vouzela ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Dairy Cows ◽  
Fatty Acid Profile ◽  
Milk Fat ◽  
Soybean Oils ◽  
Grazing Dairy Cows
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