Effects of Dietary Sources of Vegetable Oils on Performance of High-Yielding Lactating Cows and Conjugated Linoleic Acids in Milk

Zheng, Haori; Liu, J.X.; Yao, Jun; Yuan, Quyu; Ye, H.W.; Ye, J.A.; Wu, Y.M.

doi:10.3168/jds.s0022-0302(05)72880-0

Cited by 59 publications

(50 citation statements)

References 16 publications

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“…Long-chain unsaturated FA appear to be more toxic to ruminal bacteria as they can attach to lipid bilayers in bacterial membranes (because of their hydrophobic and amphiphilic nature). The longer the chains, and the more double bonds, the easier it is for FA to attach and destroy membranes of bacteria (Zheng et al, 2005).…”

Section: Discussionmentioning

confidence: 99%

Quantitative analysis of ruminal bacterial populations involved in lipid metabolism in dairy cows fed different vegetable oils

Vargas‐Bello‐Pérez

Cancino‐Padilla

Romero

et al. 2016

Animal

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Vegetable oils are used to increase energy density of dairy cow diets, although they can provoke changes in rumen bacteria populations and have repercussions on the biohydrogenation process. The aim of this study was to evaluate the effect of two sources of dietary lipids: soybean oil (SO, an unsaturated source) and hydrogenated palm oil (HPO, a saturated source) on bacterial populations and the fatty acid profile of ruminal digesta. Three non-lactating Holstein cows fitted with ruminal cannulae were used in a 3 × 3 Latin square design with three periods consisting of 21 days. Dietary treatments consisted of a basal diet (Control, no fat supplement) and the basal diet supplemented with SO (2.7% of dry matter (DM)) or HPO (2.7% of DM). Ruminal digesta pH, NH 3 -N and volatile fatty acids were not affected by dietary treatments. Compared with control and HPO, total bacteria measured as copies of 16S ribosomal DNA/ml by quantitative PCR was decreased ( P < 0.05) by SO. Fibrobacter succinogenes, Butyrivibrio proteoclasticus and Anaerovibrio lipolytica loads were not affected by dietary treatments. In contrast, compared with control, load of Prevotella bryantii was increased ( P < 0.05) with HPO diet. Compared with control and SO, HPO decreased ( P < 0.05) C18:2 cis n-6 in ruminal digesta. Contents of C15:0 iso, C18:11 trans-11 and C18:2 cis-9, trans-11 were increased ( P < 0.05) in ruminal digesta by SO compared with control and HPO. In conclusion, supplementation of SO or HPO do not affect ruminal fermentation parameters, whereas HPO can increase load of ruminal P. bryantii. Also, results observed in our targeted bacteria may have depended on the saturation degree of dietary oils.

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Section: Discussionmentioning

confidence: 99%

Quantitative analysis of ruminal bacterial populations involved in lipid metabolism in dairy cows fed different vegetable oils

Vargas‐Bello‐Pérez

Cancino‐Padilla

Romero

et al. 2016

Animal

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“…On the other hand, neither Kitessa et al (2001), with fish oil in goats, nor Allred et al (2006), with fish and soy oils in cows, observed significant differences. Finally, studying the effects of different types of vegetable oils used as supplements, Zheng et al (2005) and Bell et al (2006), in cows, and Zervas et al (1998) and Zhang et al (2006), in dairy ewes, observed that vegetable oils sharply decreased the percentage of milk fat.…”

Section: Discussionmentioning

confidence: 99%

Effects of dietary sources of vegetable fats on performance of dairy ewes and conjugated linoleic acid (CLA) in milk

Castro

Manso

Jimeno

et al. 2009

Small Ruminant Research

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ARTICLE INFO ABSTRACT Keywords:Vegetable fats Milk performance Milk CLA Dairy eweTwo experiments were carried out to study the effects of supplementing the ration of lactating ewes with vegetable fats (sunflower oil, SO or hydrogenated palm oil, HPO; HIDROPALM®) on diet digestibility, milk yield and milk composition, and on the concentration of the conjugated linoleic acid (CLA) C18:2 cis-9 trans-11 and C18:l trans-11 (vaccenic acid, VA) and other main fatty acids in milk fat. Treatments involved a control diet, without added oil, and 2 diets supplemented with either 12g/kg SO or 12g/kg HPO on a dry matter (DM) basis. In the first experiment, 6 non-pregnant, non-lactating Lacaune ewes were used following a 3 x 3 replicated Latin Square design. Addition of vegetable fat supplement to the diet increased digestibility of DM, organic matter (OM) and crude protein (CP), but did not affect that of the ether extract (EE), neutral detergent fibre (NDF) or acid detergent fibre (ADF). In the second experiment, 60 Lacaune dairy ewes mid-way through lactation (120 ±12 days in milk, 0.98 ± 0.03 kg/day average milk yield) were divided into three equalsized groups each of which was assigned to one of the three experimental diets for4 weeks. Compared with the control treatment, supplementation with HPO increased milk yield and energy-corrected milk. But neither vegetable fat supplement modified percentages of fat and protein in milk. Supplementation with HPO increased C14:l, C16:l and C16:0 content and reduced C18:0 and C18:l cis-9 content in milk fat. Supplementation with SO increased the VA content in milk fat by 36% and that of cis-9 trans-11 CLA by 29% in comparison with the control diet. Supplementation with HPO led to milk fat with 15% more cis-9 trans-11 CLA than control milk. In conclusion, adding a moderate dose of HPO or SO to the diets increased CLA concentration in milk fat. Nevertheless, supplementation with SO was more effective than HPO in increasing CLA concentration in milk fat and reducing the atherogenicity index, improving milk quality from the human health standpoint.

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“…Currently, not much is known on how sow nutrition affects colostrum yield. Dietary fat from different sources are commonly included in lactation diets to improve milk yield of sows (Boyd et al, 1982;Lauridsen and Danielsen, 2004), and CLA, a bioactive FA, is known to impact mammary gland metabolism and increase the milk yield of dairy cows (Zheng et al, 2005). It was therefore reasonable to assume that inclusion of dietary CLA could increase colostrum production, but sows fed with 1.3% CLA (an equal mixture of cis-9/trans-11 and trans-10/cis-12 isomers) from day 108 of gestation until parturition tended to produce less colostrum (409 v. 463 g; P = 0.07) and more piglets died or had to be moved to other sows during the 1 st week of lactation to ensure their survival (17.6% v. 7.8% in the control group; P = 0.04; Krogh et al, 2012) compared with control sows.…”

Section: Sow Nutrition and Piglet Survivalmentioning

confidence: 99%

Neonatal piglet survival: impact of sow nutrition around parturition on fetal glycogen deposition and production and composition of colostrum and transient milk

Theil

Lauridsen

Quesnel

2014

animal

182

161

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Piglet survival is a major problem, especially during the first 3 days after birth. Piglets are born deficient of energy, but at the same time they have a very high energy requirement because of high physical activity, high need for thermoregulation (because of their lean body with low insulation) and high heat production in muscle tissues. To be able to survive, newborn piglets may rely upon three different sources of energy, namely, glycogen, colostrum and transient milk, which orchestrate to cover their energy requirements. Piglets are born with limited amounts of energy in glycogen depots in the liver and muscle tissues and these depots are sufficient for normal activity for ∼16 h. Intake and oxidation of fat and lactose from colostrum must supply sufficient amount of energy to cover at least another 18 h until transient milk becomes available in the sow udder ∼34 h after the first piglet is born. Selection for large litters during the last two decades has challenged piglets even further during the critical neonatal phase because the selection programs indirectly decreased birth weight of piglets and because increased litter size has increased the competition between littermates. Different attempts have been made to increase the short-term survival of piglets, that is, survival until day 3 of lactation, by focusing on improving transfer of vital maternal energy to the offspring, either in utero or via mammary secretions. Thus, the present review addresses how sow nutrition in late gestation may favor survival of newborn piglets by increasing glycogen depots, improving colostrum yield or colostrum composition, or by increasing production of transient milk.

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Effects of Dietary Sources of Vegetable Oils on Performance of High-Yielding Lactating Cows and Conjugated Linoleic Acids in Milk

Cited by 59 publications

References 16 publications

Quantitative analysis of ruminal bacterial populations involved in lipid metabolism in dairy cows fed different vegetable oils

Quantitative analysis of ruminal bacterial populations involved in lipid metabolism in dairy cows fed different vegetable oils

Effects of dietary sources of vegetable fats on performance of dairy ewes and conjugated linoleic acid (CLA) in milk

Neonatal piglet survival: impact of sow nutrition around parturition on fetal glycogen deposition and production and composition of colostrum and transient milk

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