Methods and approaches to estimate B vitamin status in dairy cows: Knowledge, gaps and advances

Girard, C.L.; Graulet, Benoı̂t

doi:10.1016/j.ymeth.2020.05.021

Cited by 14 publications

(15 citation statements)

References 64 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…B-vitamin supplementation has been vastly ignored in the field of ruminant nutrition due to the ability of rumen microorganisms to synthesize these vitamins endogenously. However, it is difficult to estimate B-vitamin supply in ruminants as it includes dietary sources that escape ruminal destruction or utilization and the amount synthesized by ruminal microorganisms ( Girard and Graulet, 2021 ). It was hypothesized that increasing supplemental RPFA would help support the DNA and protein synthesis required for the growth of steers in the current study.…”

Section: Discussionmentioning

confidence: 99%

Investigating the effects of a novel rumen-protected folic acid supplement on feedlot performance and carcass characteristics of beef steers

Deters

Niedermayer

Genther-Schroeder

et al. 2021

Translational Animal Science

View full text Add to dashboard Cite

Angus-crossbred steers (n = 180; 292 ± 18 kg) from a single ranch were used to investigate the effects of a novel rumen-protected folic acid (RPFA) supplement on feedlot performance and carcass characteristics. On d 0, steers were blocked by body weight to pens (5 steers/pen), and pens within a block were randomly assigned to dietary treatments (n = 6 pens/treatment): target intake of 0 (CON), 30 (RPFA-30), 60 (RPFA-60), 90 (RPFA-90), 120 (RPFA-120), or 150 (RPFA-150) mg RPFA·steer -1·d -1. Steers were weighed before feeding on d -1, 0, 55, 56, 86, 87, 181, and 182. Pen average daily gain (ADG), dry matter intake (DMI), and gain:feed (G:F) were calculated for growing (d 0 to 56), dietary transition (d 56 to 87), finishing (d 87 to 182), and overall (d 0 to 182). Liver and blood samples were collected from two steers/pen before trial initiation and at the end of growing and finishing. Steers were slaughtered on d 183, and carcass data were collected after a 48-h chill. Data were analyzed as a randomized complete block design using ProcMixed of SAS 9.4 (fixed effects of treatment and block; experimental unit of pen). Liver abscess scores were analyzed using the Genmod Procedure of SAS 9.4. Contrast statements assessed the polynomial effects of RPFA. Supplemental RPFA linearly increased plasma folate at the end of growing and finishing (P < 0.01), and linearly decreased plasma glucose at the end of growing (P = 0.01). There was a cubic effect of RPFA on liver folate at the end of growing (P = 0.01), driven by lesser concentrations for RPFA-30, RPFA-60, and RPFA-150. Growing period ADG and G:F were greatest for CON and RPFA-120 (cubic P ≤ 0.03). Transition period DMI was linearly increased due to RPFA (P = 0.05). There was a tendency for a cubic effect of RPFA on the percentage of livers with no abscesses (P = 0.06), driven by a greater percentage of non-abscessed livers in RPFA-30 and RPFA-60. Despite supplementing 1 mg Co/kg DM, and regardless of treatment, plasma vitamin B12 concentrations were low (< 200 pg/mL), which may have influenced the response to RPFA as vitamin B12 is essential for recycling of folate.

show abstract

Section: Discussionmentioning

confidence: 99%

Investigating the effects of a novel rumen-protected folic acid supplement on feedlot performance and carcass characteristics of beef steers

Deters

Niedermayer

Genther-Schroeder

et al. 2021

Translational Animal Science

View full text Add to dashboard Cite

show abstract

“…The changes are modest, but suggest that, though no visible signs, cows are experiencing deficiencies in B vitamins. Girard and Graulet [1] remarked that a deficiency occurs any time a supply is lower than a need. A deficiency may not result in clinical signs of poor health or performance, but rather some metabolic distress that can resolve itself as lower growth or milk yield production, lower response to stress or reduced reproductive capabilities.…”

Section: Resultsmentioning

confidence: 99%

“…The functions of these nutrients are wide ranging and impact all aspects of health and productivity. The primary source of B vitamins for lactating dairy cattle is from the microbial synthesis in the rumen [1] [2] as most of the B vitamins from feed ingredients are quickly destroyed upon exposure to rumen microbes [1] [3] [4]. Early research, conducted in an era when productivity per cow was lower than now, demonstrated that microbial synthesis of B vitamins was adequate to support requirements [5] [6] [7] [8].…”

Section: Introductionmentioning

confidence: 99%

“…Recent research has shown that the amounts of B vitamins synthesized are variable and are altered by feeding conditions such as forage to concentrate ratio [13] [14] [15], rumen nitrogen availability [16], and even the ingredients per-se [16] [17]. The fact that rumen microbes may not provide adequate amounts of B vitamins to allow optimum productivity is now being accepted as true [1].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Assessment of Lactational Performance in Dairy Cows Receiving a Rumen Protected B Vitamin Blend during Lactation: Part 1: A Meta-Analysis of 50 Studies

Evans¹,

Leclerc²,

Zahal³

et al. 2021

OJAS

View full text Add to dashboard Cite

The objective of this research was to evaluate the impact of a dietary supplemental rumen protected B vitamin blend (RPBV: Folic acid, B12, pyridoxine, pantothenic acid, and biotin; Jefo, St. Hyacinthe, QC Canada) on milk, fat, and protein yield in cows past peak lactation. Results from 50 double reversal design trials (control-test-control) were evaluated using meta-analyses. All herds participated in monthly milk recording services, and all were Holstein herds. Within each of the 50 trials, cows included in the statistical analysis were over 45 days in milk (DIM) at the first milk test, averaged 159 ± 26 DIM on the first test date, and were available for all milk collection periods. A total of 6483 cows from 7 countries were represented in the 50 studies, with an average herd size of 129.7 ± 118.0. Meta-analyses were conducted to determine effect size for milk, fat, and protein yield based on the treatment differences and standard errors (SE) from the individual trials. Results indicated that dairy cows responded positively to the inclusion of the rumen protected B vitamin blend. Forest plots revealed trial-to-trial variation and might be related to age, level of milk production, and stage of lactation of the cows.

show abstract

“…Dairy products can contain high amounts of protein of high biological value, as well as vitamins (particularly the fat-soluble vitamins A and D and the B complex vitamins B 2 -riboflavin and B 12 -cobalamin) [6][7][8][9] and dietary minerals (such as calcium, phosphorus, sodium, magnesium, potassium and iodine) [10][11][12]. They also contain carbohydrates, especially in the form of lactose, which might be problematic for some consumers with lactose intolerance.…”

Section: Introductionmentioning

confidence: 99%

Study of the Influence of Sociodemographic and Lifestyle Factors on Consumption of Dairy Products: Preliminary Study in Portugal and Brazil

Guiné

Florença

Carpes

et al. 2020

Foods

View full text Add to dashboard Cite

Sociodemographic characteristics, including regional variations, have been associated with different food consumption patterns. Behavioral factors and lifestyle variables may also contribute to different food dietary trends. In this way, the present study intended to investigate the consumption habits of the most relevant types of dairy products around the world and relate them to sociodemographic factors, for example, age, sex, education and country as well as with some anthropometric and behavioral aspects, for example, body mass index, satisfaction with body weight and exercise or sedentary lifestyles. One other objective of the study was to categorize the lifestyles of the participants, according to measured variables linked with hours of inactivity or exercise, in order to use these as possible differentiating variables for the consumption of dairy products. The study involved a questionnaire survey undertaken on a non-probabilistic convenience sample of participants from Portugal (PT) and Brazil (BR), and participation was voluntary and anonymous. The data analysis involved different statistical techniques: basic statistics, chi-square tests, factor analysis, cluster analysis and tree classification analysis. The results showed that semi skimmed milk is never consumed by about half of the participants (47.4% for PT and 46.7 for BR), and those numbers increase for skimmed (64.8% for PT and 50.9% for BR), chocolate flavored milk (82.6% for PT and 65.6% for BR) and enriched milks (94.8% for PT and 85.3% for BR). Cheeses are also consumed in the two countries by small numbers of people. The number of participants consuming imported cheeses in both countries was particularly low (only 4.0% consume these more than once a week in both countries), suggesting national products may be preferred. It was further observed that those who consume cheese do it seldom (once a week) or sometimes (2–3 times per week). Butter is also consumed by only about half of the adult population (43.8% for PT and 49.5% for BR), but the percentage of those who never consume butter increases for skimmed butter (66.0% for PT and 82.6% for BR) and unsalted butter (70.2% for PT and 69.1% for BR). The consumption of yogurts also follows similar low consumption patterns. The most frequently consumed yogurt types in Portugal are liquid (30.5% consume regularly) and natural yogurts (34.8% consume regularly), while in Brazil the most frequent are creamy fruit pulp yogurt (14.4% consume regularly), liquid (13.7% consume regularly) and Greek type yogurt (10.2% consume regularly). A factor analysis and a cluster analysis established groups according to lifestyles, as follows: 1—Screeners, 2—Exercisers, 3—Travelers and 4—Others. These lifestyles were found to be influential in the consumption of dairy products for all classes of dairy tested: milk, cheese, yogurt and butter. For example, the screeners were found to consume more milk, more butter, more cheese and more yogurt. Additionally, other influential factors were age, sex, education, BMI and satisfaction with body weight. Nevertheless, country was not a meaningfully discriminant variable in relation to the other variables included in the classification analysis. The results concluded that, despite some small differences in the patterns of consumption of dairy products in both countries, the levels of consumption of dairy products are extremely low, for all classes studied (milk, cheese, yogurt or butter). Additionally, it was concluded that some factors are influential on the level of consumption of dairy products, and therefore decision makers can plan their interventions according to the characteristics of the targeted segments of the population, according to lifestyle, age, sex, education, BMI and satisfaction with body weight.

show abstract

Methods and approaches to estimate B vitamin status in dairy cows: Knowledge, gaps and advances

Cited by 14 publications

References 64 publications

Investigating the effects of a novel rumen-protected folic acid supplement on feedlot performance and carcass characteristics of beef steers

Investigating the effects of a novel rumen-protected folic acid supplement on feedlot performance and carcass characteristics of beef steers

Assessment of Lactational Performance in Dairy Cows Receiving a Rumen Protected B Vitamin Blend during Lactation: Part 1: A Meta-Analysis of 50 Studies

Study of the Influence of Sociodemographic and Lifestyle Factors on Consumption of Dairy Products: Preliminary Study in Portugal and Brazil

Contact Info

Product

Resources

About