Corrigendum to: Effects of forage species and feeding systems on rumen fermentation, microbiota and conjugated linoleic acid content in dairy goats

2019 ◽  
Vol 59 (12) ◽  
pp. 2288
Author(s):  
Saranpong Thongruang ◽  
Pramote Paengkoum ◽  
Wisitiporn Suksombat ◽  
Smerjai Bureenok
Keyword(s):  
Linoleic Acid ◽  
Conjugated Linoleic Acid ◽  
Pennisetum Purpureum ◽  
Ruminal Fermentation ◽  
Dairy Goats ◽  
Lactation Stage ◽  
Lactating Goats ◽  
Forage Species ◽  
Total Bacteria ◽  
Feeding Systems

The objective of this experiment was to investigate the effects of forage species and feeding systems on ruminal fermentation, microbiota (Butyrivibrio fibrisolvens, Fibrobacter succinogenes and total bacteria) and conjugated linoleic acid (CLA) concentration of milk in dairy goats. Twenty female crossbred Saanen lactating goats (~35 ± 3.0 kg bodyweight) in early to mid-lactation stage were assigned to a 45-day completely randomised-design feeding experiment, with the following four forage (roughage) treatments: cut-and-carry grass (CG), grazing of grass (GG), cut-and-carry leucaena (CL) and grazing of leucaena (GL; n = 5). All animals were given concentrate equivalent to 1.5% of their bodyweight. The grass used in the study was napier Pak Chong 1 grass (Pennisetum purpureum × Pennisetum americanum hybrid). The results showed that irrespective of the type of forage, grazing goats (GG and GL) had a higher (P B. fibrisolvens, F. succinogenes and total bacteria were significantly (P P B. fibrisolvens (involved in the synthesis of milk CLA), resulting in a higher milk yield, and enhances c9, t11 and t10, c12 CLA in goat milk.

Effects of forage species and feeding systems on rumen fermentation, microbiota and conjugated linoleic acid content in dairy goats

2019 ◽  
Vol 59 (12) ◽  
pp. 2147 ◽  
Author(s):  
Saranpong Thongruang ◽  
Pramote Paengkoum ◽  
Wisitiporn Suksombat ◽  
Smerjai Bureenok
Keyword(s):  
Linoleic Acid ◽  
Conjugated Linoleic Acid ◽  
Milk Yield ◽  
Rumen Fermentation ◽  
Pennisetum Purpureum ◽  
Dairy Goats ◽  
Forage Species ◽  
Forage Intake ◽  
Total Bacteria ◽  
Feeding Systems

The objective of this experiment was to investigate the effects of forage species and feeding systems on ruminal fermentation, microbiota (Butyrivibrio fibrisolvens, Fibrobacter succinogenes and total bacteria) and conjugated linoleic acid (CLA) concentration of milk in dairy goats. Twenty female crossbred Saanen lactating goats (~35 ± 3.0 kg bodyweight) in early to mid-lactation stage were assigned to a 45-day completely randomised-design feeding experiment, with the following four forage (roughage) treatments: cut-and-carry grass (CG), grazing of grass (GG), cut-and-carry leucaena (CL) and grazing of leucaena (GL; n = 5). All animals were given concentrate equivalent to 1.5% of their bodyweight. The grass used in the study was napier Pak Chong 1 grass (Pennisetum purpureum × Pennisetum americanum hybrid). The results showed that irrespective of the type of forage, grazing goats (GG and GL) had a higher (P < 0.05) forage intake and, thus, total dry-matter and crude-protein intakes than did those fed indoors (CG and CL). However, the intake of C18:2n6 and particularly of C18:3n3 was generally higher for grass-fed goats than for leucaena-fed goats. Treatments did not exert significant differences on rumen fermentation characteristics. However, the populations of B. fibrisolvens, F. succinogenes and total bacteria were significantly (P < 0.05) higher in grazing goats (GG and GL) than in their counterparts fed with the cut-and-carry system (CG and CL). Goats in the grazing system also had a higher (P < 0.05) milk yield, and milk fat, c9, t11 CLA and omega-3 fatty acid concentrations than did those in the cut-and-carry system and only grazing goats produced detectable levels of t10, c12 CLA in milk. Putting the above together, it can be concluded that allowing dairy goats to outdoor grazing stimulates a higher forage intake, including that of C18:2n6 and C18:3n3, as well as enhancing population of B. fibrisolvens (involved in the synthesis of milk CLA), resulting in a higher milk yield, and enhances c9, t11 and t10, c12 CLA in goat milk.

scholarly journals Profile of ingested fatty acids and in the duodenal digest of steers fed different diets

2010 ◽  
Vol 39 (11) ◽  
pp. 2502-2511 ◽  
Author(s):  
Luís Fernando Glasenapp de Menezes ◽  
Gilberto Vilmar Kozloski ◽  
João Restle ◽  
Ivan Luiz Brondani ◽  
Raul Dirceu Pazdiora ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Linoleic Acid ◽  
Conjugated Linoleic Acid ◽  
Unsaturated Fatty Acids ◽  
Saturated Fatty Acids ◽  
Latin Square ◽  
Tropical Pasture ◽  
Ruminal Fermentation ◽  
Omega 3 ◽  
Conventional Diet

It was evaluated in this study the effect of the type of the diet on duodenal flow of long-chain fatty acids in steers. The tested diets were the following: conventional (feedlot diet composed of 60% corn silage and 40% of concentrate); winter forage silage - rye grass (Lolium multiflorum, Lam); or tropical forage silage - association of millet (Pennisetum americanum, Leeke + alexander grass, Brachiaria plantaginea). Six Charolais × Nellore crossbred steers with cannulas in duodenum were used in a 3 × 3 double Latin square. Dry material intake was similar among the groups (mean of 4,037 g/day), but the intake of total fatty acids and saturated fatty acids were higher in the group fed tropical pasture silage. On the other hand, the animals which received the conventional diet consumed higher quantity of unsaturated fatty acids. Tropical pasture silage provided higher consumption of vacenic acid (C18:1 t-11) and the winter forage silage offered higher consumption of conjugated linoleic acid. The intake of omega-6 fatty acids was higher in the group fed conventional diet and for omega-3, intake was higher in the group fed tropical pasture diet. The total fatty acid flow in the duodenum was not affected by the diets, but in all treatments it was higher than the consumed one. The animals fed diet with concentrate show the greatest changes on the profile of fatty acids during the ruminal fermentation. Conventional diets provide the highest intake of unsaturated fatty acids and the highest availability of vacenic acid in the small intestine, but they do not increase the supply of intestinal conjugated linoleic acid.

Impact of calving seasons and feeding systems in western Canada. II. Meat composition and organoleptic quality of steaks

2014 ◽  
Vol 94 (4) ◽  
pp. 583-593 ◽  
Author(s):  
Obioha N. Durunna ◽  
Hushton C. Block ◽  
Alan D. Iwaasa ◽  
Shannon L. Scott ◽  
Clayton Robins ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Linoleic Acid ◽  
Conjugated Linoleic Acid ◽  
Vaccenic Acid ◽  
Subcutaneous Fat ◽  
Western Canada ◽  
Organoleptic Quality ◽  
Meat Composition ◽  
Feeding Systems

Durunna, O. N., Block, H. C., Iwaasa, A. D., Scott, S. L., Robins, C., Khakbazan, M., Dugan, M. E. R., Aalhus, J. L., Aliani, M. and Lardner, H. A. 2014. Impact of calving seasons and feeding systems in western Canada. II. Meat composition and organoleptic quality of steaks. Can. J. Anim. Sci. 94: 583–593. Fatty acid profiling, meat and organoleptic quality assessments were conducted on 160 carcasses of crossbred steers born into one of two calving systems and later assigned to one of two postweaning feeding systems. The steers were weaned from either an early calving or late calving system and later assigned to either a rapid-gain feeding (RF) or a slow-gain feeding (SF) system. The RF steers received a silage–hay diet during the backgrounding period prior to finishing, while the SF steers received a hay diet at backgrounding and then grazed alfalfa–meadow bromegrass pasture and annual cereal swaths prior to finishing. All treatment groups received a conventional diet during finishing until the steers attained a target backfat thickness or body weight. Fatty acid analyses were conducted on longissimus dorsi muscle (LDM) and subcutaneous fat samples. Other analyses included LDM composition, tenderness and taste panel evaluations. Total saturated fatty acid was greater (P<0.02) in samples from RF steers, while total monounsaturated fatty acid was greater (P<0.01) in SF steers. The SF steers had greater (P<0.01) conjugated linoleic acid concentration. There was no main or interaction effect (P>0.05) on beef aroma, flavour and tenderness but the SF steaks had lower (P=0.02) cooking losses than RF steaks. The SF strategy has the potential to create a value chain that would lead to finished steers with higher backfat omega-3, conjugated linoleic acid and trans vaccenic acid and less cooking moisture losses.

scholarly journals Feeding Soybean Oil to Dairy Goats Increases Conjugated Linoleic Acid in Milk

2008 ◽  
Vol 91 (6) ◽  
pp. 2399-2407 ◽  
Author(s):  
M.A. Bouattour ◽  
R. Casals ◽  
E. Albanell ◽  
X. Such ◽  
G. Caja
Keyword(s):  
Linoleic Acid ◽  
Soybean Oil ◽  
Conjugated Linoleic Acid ◽  
Dairy Goats

scholarly journals Variations in Conjugated Linoleic Acid Concentrations in Cows Milk, Depending on Feeding Systems in Different Seasons

2008 ◽  
Vol 21 (10) ◽  
pp. 1466-1472 ◽  
Author(s):  
Maimaijiang Zunong ◽  
Masaaki Hanada ◽  
Yimamu Aibibula ◽  
Meiji Okamoto ◽  
Keiichi Tanaka
Keyword(s):  
Linoleic Acid ◽  
Conjugated Linoleic Acid ◽  
Different Seasons ◽  
Feeding Systems

Accumulation of biohydrogenation intermediates during in vitro ruminal fermentation of camelina oil-based rations

2007 ◽  
Vol 2007 ◽  
pp. 26-26
Author(s):  
S.E. Grace ◽  
A.P. Moloney ◽  
D.A. Kenny
Keyword(s):  
Linoleic Acid ◽  
Conjugated Linoleic Acid ◽  
Linolenic Acid ◽  
Vaccenic Acid ◽  
Ruminal Fermentation ◽  
Dietary Linoleic Acid ◽  
Camelina Oil ◽  
Ruminal Biohydrogenation ◽  
Biohydrogenation Intermediates

The myriad putative health benefits of conjugated linoleic acid (CLA) and in particular the cis-9, trans-11 isomer, have stimulated interest in increasing its concentration in food. Ruminant fat is the main dietary source of CLA for humans and CLA is produced in the rumen by incomplete biohydrogenation of dietary linoleic acid (LA). It is now accepted that most CLA is synthesised post-ruminally by desaturation of vaccenic acid (VA) produced during ruminal biohydrogenation of (LA) and linolenic acid (LNA) (Griinari et al., 2000). Enhancement of VA synthesis in the rumen is therefore an important element of strategies to increase CLA concentration in tissue. The objective of this experiment was to determine the effect of controlling the rate of release of oil from camelina seeds, a novel source of both LA and LNA, on the accumulation of intermediates during ruminal biohydrogenation.

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