scholarly journals Feed Intake, Methane Emissions, Milk Production and Rumen Methanogen Populations of Grazing Dairy Cows Supplemented with Various C 18 Fatty Acid Sources

Animals ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 2380
Author(s):  
Tommy M. Boland ◽  
Karina M. Pierce ◽  
Alan K. Kelly ◽  
David A. Kenny ◽  
Mary B. Lynch ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Dairy Cows ◽  
Milk Production ◽  
Production Systems ◽  
Linseed Oil ◽  
Ch4 Emissions ◽  
Grazed Pasture ◽  
Grazing Dairy Cows ◽  
Milk Solids ◽  
Rumen Methanogen

Emissions of methane (CH4) from dairy production systems are environmentally detrimental and represent an energy cost to the cow. This study evaluated the effect of varying C18 fatty acid sources on CH4 emissions, milk production and rumen methanogen populations in grazing lactating dairy cows. Forty-five Holstein Friesian cows were randomly allocated to one of three treatments (n = 15). Cows were offered 15 kg dry matter (DM)/d of grazed pasture plus supplementary concentrates (4 kg DM/d) containing either stearic acid (SA), linseed oil (LO), or soy oil (SO). Cows offered LO and SO had lower pasture DM intake (DMI) than those offered SA (11.3, 11.5 vs. 12.6 kg/d). Cows offered LO and SO had higher milk yield (21.0, 21.3 vs. 19.7 kg/d) and milk protein yield (0.74, 0.73 vs. 0.67 kg/d) than those offered SA. Emissions of CH4 (245 vs. 293, 289 g/d, 12.4 vs. 15.7, 14.8 g/kg of milk and 165 vs. 207, 195 g/kg of milk solids) were lower for cows offered LO than those offered SA or SO. Methanobrevibacter ruminantium abundance was reduced in cows offered LO compared to SA. Offering supplementary concentrates containing LO can reduce enteric CH4 emissions from pasture fed dairy cows.

scholarly journals Correction: Boland, T.M.; et al. Feed Intake, Methane Emissions, Milk Production and Rumen Methanogen Populations of Grazing Dairy Cows Supplemented with Various C 18 Fatty Acid Sources. Animals 2020, 10, 2380

Animals ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 280
Author(s):  
Tommy M. Boland ◽  
Karina M. Pierce ◽  
Alan K. Kelly ◽  
David A. Kenny ◽  
Mary B. Lynch ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Dairy Cows ◽  
Milk Production ◽  
Feed Intake ◽  
Methane Emissions ◽  
Grazing Dairy Cows ◽  
Published Paper ◽  
Rumen Methanogen

The authors wish to make a change to the published paper [...]

scholarly journals Feeding Calcium Salts of Linseed Oil on Productive Performance and Milk Fatty Acid Profile in Grazing Dairy Cows

2020 ◽  
Vol 10 (04) ◽  
pp. 761-781
Author(s):  
Yaliska Moreno González ◽  
Jesica Iorio ◽  
María Florencia Olmeda ◽  
Dino Curletto ◽  
Daniel Scandolo ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Dairy Cows ◽  
Fatty Acid Profile ◽  
Linseed Oil ◽  
Milk Fatty Acid ◽  
Productive Performance ◽  
Calcium Salts ◽  
Grazing Dairy Cows

Milk production and composition, and methane emissions from dairy cows fed lucerne hay with forage brassica or chicory

2016 ◽  
Vol 56 (3) ◽  
pp. 304 ◽  
Author(s):  
S. R. O. Williams ◽  
P. J. Moate ◽  
M. H. Deighton ◽  
M. C. Hannah ◽  
W. J. Wales ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Dairy Cows ◽  
Milk Production ◽  
Perennial Grass ◽  
Milk Fatty Acids ◽  
Ch4 Emissions ◽  
Holstein Friesian ◽  
Grazing Dairy Cows ◽  
Diet Type ◽  
Friesian Cows

Forage brassica and chicory crops provide an alternative to perennial grass pastures as a forage supply for grazing dairy cows during summer, but there is little information about their effects on milk production and methane (CH4) emissions. Thirty-two Holstein–Friesian cows were fed for 10 days on a diet of lucerne cubes (750 g/kg DM) and grain (250 g/kg DM) (CON) or diets in which forage brassica (410 g/kg DM, FBR) or reproductive-stage chicory (410 g/kg DM, RCH) were offered with lucerne cubes (340 g/kg DM) and grain (250 g/kg DM). Cows offered the FBR diet produced more energy-corrected milk (25.4 kg/day) than did cows offered the CON diet (22.7 kg/day, P = 0.001), even though DM intake was not different for cows between the two groups (20.6 kg/day on average). In contrast, cows offered the RCH diet produced less energy-corrected milk (19.3 kg/day) than did cows in the other two groups (P = 0.001), reflecting the lower DM intake by cows offered the RCH diet (17.7 kg/day, P < 0.01). Methane yield (g CH4/kg DMI) was lower (P < 0.01) on the CON (21.0) and FBR (20.5) diets than on the RCH diet (26.1). Methane intensity (g/kg energy-corrected milk) was different (P < 0.01) for all diets, with CON (19.4) being intermediate, FBR (17.3) lowest and RCH (23.8) the greatest. Diet type was associated with differences in the proportions of only a small number of specific milk fatty acids, and differences in proportions of specific fatty acids were not related to CH4 emissions.

scholarly journals Effects of Grass Silage and Soybean Meal Supplementation on Milk Production and Milk Fatty Acid Profiles of Grazing Dairy Cows

2008 ◽  
Vol 91 (7) ◽  
pp. 2736-2743 ◽  
Author(s):  
O.A. Rego ◽  
S.M.M. Regalo ◽  
H.J.D. Rosa ◽  
S.P. Alves ◽  
A.E.S. Borba ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Dairy Cows ◽  
Milk Production ◽  
Soybean Meal ◽  
Milk Fatty Acid ◽  
Fatty Acid Profiles ◽  
Grass Silage ◽  
Grazing Dairy Cows

Acceptability of high fat grain mixtures offered to grazing dairy cows

1990 ◽  
Vol 30 (5) ◽  
pp. 595 ◽  
Author(s):  
KR King ◽  
CR Stockdale ◽  
TE Trigg
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Dairy Cows ◽  
High Fat ◽  
Eating Time ◽  
Grazed Pasture ◽  
Percentage Unit ◽  
Lactating Dairy Cows ◽  
Unit Increase ◽  
Grazing Dairy Cows

Levels of acceptance of mixtures of rolled oats and predominantly saturated, molten or free-flowing fatty acids were assessed with lactating dairy cows. Twenty cows grazed pasture and were offered rolled oats comprising 0, 2, 4, 8, 15, 25 or 40% (w/w) fatty acids. One kg/cow was offered twice daily to cows following milking. The acceptability of grain-fat mixtures was influenced by level of fatty acids. The fatty acid concentrations above which less than 95% of the supplement was consumed by animals ranged from 22 to 31%. Time spent eating the supplement was reduced by 2.4 s for every percentage unit increase in fatty acid concentration, while high air temperature increased (P<0.05) eating time.

scholarly journals Milk Fatty-Acid Profile after Feeding Increasing Doses of a Mixture of Soybean and Linseed Oils to Pasture Dairy Cows

2020 ◽  
Vol 1 (3) ◽  
Author(s):  
Liliana Elisabet Antonacci ◽  
Gerardo Antonio Gagliostro
Keyword(s):  
Fatty Acid ◽  
Dairy Cows ◽  
Milk Production ◽  
Milk Fat ◽  
Vaccenic Acid ◽  
Atherogenic Index ◽  
Milk Fatty Acid ◽  
Randomized Design ◽  
Oil Blend ◽  
Grazing Dairy Cows

The objective was to determine the effect of increasing intake of a mixture (75:25) of soybean (SO) and linseed  (LO) oils on milk production and composition and milk fatty acid (FA) profile in grazing dairy cows. Twenty-four Holstein cows were assigned to 4 treatments in a completely randomized design with three weeks of adaptation to oil doses and one week of experimental measurements. On a dry matter (DM) basis, cows were fed pasture (63%), energy concentrate (37%) and the SO-LO oil mixture at zero (T0), 2% (T2%), 4% (T4%) and 6% (T6%) of total DM intake equivalent to 0, 0.36, 0.72 and 1.08 kg cow-1 day-1 of the oil mixture. The oil blend was manually mixed to the concentrate (7.04 kg DM cow-1 day-1) and supplied by halves during each milking time without refusals. Pasture (P = 0.49) and total DM intakes (P = 0.31) were similar between treatments averaging 11.27 and 18.85 kg DM cow-1 day-1 respectively. Milk production (22.71 kg cow-1 day-1) was not affected (P = 0.46). Milk fat content decreased linearly (P < 0.05) from 3.20 (T0) to 2.67 g 100 g-1 (T6%) without effects (P = 0.73) on fat or fat corrected milk (4%FCM) yields. Milk protein concentration (P < 0.56) or yields (P < 0.11 were not affected. Lactose content tended (P < 0.08) to be higher in oil supplemented cows and milk urea nitrogen was not affected (P = 0.14). The basal (T0%) concentration (g 100 g-1 FA) of total hypercholesterolemic FA (C12:0, C14:0 and C16:0) of milk averaged 38.93 and decreased linearly (P < 0.0001) with oil intake to 37.81 (T2%), 31.59 (T4%) and 29.18 (T6%). Levels of elaidic (trans-9 C18:1) and trans-10 C18:1 FA resulted low in the basal (T0%) milk (0.21 and 0.20 g 100 g-1 FA respectively) but increased linearly (P < 0.0001) after oil intake reaching the maximum values at T6% (0.73 and 2.23 g 100 g-1 FA respectively). Milk concentration (g 100 g-1 FA) of vaccenic acid (trans-11 C18:1, VA) averaged 3.63 in T0% and increased linearly (P < 0.0001) with oil intake reaching 4.97, 7.05 and 8.38 in T2%, T4% and T6%, respectively. Basal concentration of rumenic acid (cis-9. trans-11 C18:2, RA) was 2.28 g 100 g-1 FA and increased linearly (P < 0.0001) with increased oil dose resulting in maximal plateau in T4% (3.88) and T6% (3.89). The basal  atherogenic index (AI) of milk was 1.87 and linearly decreased (P < 0.01) to 1.64 (T2%), 1.18 (T4%) and 0.95 (T6%) after oil intake. The basal n-6/n-3 ratio (3.57) did not differ (P > 0.05) from T2% (3.37) but was higher (P < 0.05) in T4% (4.41) and T6% (4.63) remaining under the recommended value of 5:1. Taken together the results suggest that feeding a blend (75:25; SO:LO) of SO an LO oils at 4% of total DM intake to grazing dairy cows maximize the milk RA content with a concomitant decrease in the hypercholesterolemic FA of milk maintaining a healthy n− 6/n−3 ratio with low levels of the detrimental trans-9 C18:1 and trans-10 C18:1.

scholarly journals Effect of either soya or linseed oil supplementation of grazing dairy cows on milk production and methane emissions

2010 ◽  
Vol 1 (1) ◽  
pp. 51-51 ◽  
Author(s):  
J D Rowntree ◽  
K M Pierce ◽  
F Buckley ◽  
K J Petrie ◽  
J J Callan ◽  
...  
Keyword(s):  
Dairy Cows ◽  
Milk Production ◽  
Linseed Oil ◽  
Methane Emissions ◽  
Grazing Dairy Cows

A comparison of two contrasting milk production systems for high genetic merit autumn calving dairy cows in a grassland based production environment

1999 ◽  
Vol 1999 ◽  
pp. 76-76
Author(s):  
C.P. Ferris ◽  
F.J. Gordon ◽  
D.C. Patterson ◽  
C.S. Mayne
Keyword(s):  
Dairy Cows ◽  
Milk Production ◽  
Protein Concentration ◽  
Production Systems ◽  
Production Environment ◽  
Genetic Merit ◽  
Short Term Study ◽  
Two Systems ◽  
High Feed ◽  
Feed Value

In a previous short term study, Ferris et al. (1997) demonstrated that similar levels of nutrient intake and animal performance could be obtained by either increasing silage feed value and reducing concentrate feed level, or by reducing silage feed value and increasing concentrate feed level. The principles established in this study were incorporated into this trial to examine two systems of milk production over a full lactation, including both the winter and grazing periods.Forty high genetic merit dairy cows (PTA95 fat + protein = 38.2 kg), in their second or subsequent lactation, were used in a continuous design full lactation study. Animals had a mean calving date of 1 November and were allocated to one of two systems of milk production, HF or HC, within 36 hours of calving. During the winter, animals on system HF were offered a silage with high feed value characteristics, supplemented with 5.5 kg of concentrate (crude protein concentration of 280 g/kg DM) through an out-of-parlour feeding system.

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