The response of limousin x friesian steers fed silage and concentrates to the addition of supplemental yeast culture (yea-sacc) and/or antibiotic additive (avotan)

1991 ◽  
Vol 1991 ◽  
pp. 95-95
Author(s):  
I E Edwards ◽  
J H Topps ◽  
M El Sheikh ◽  
G F M Paterson
Keyword(s):  
Growth Medium ◽  
Rumen Fermentation ◽  
Feed Additive ◽  
Yeast Culture ◽  
Animal Performance

Supplementation with Yea-sacc - yeast (Saccharomyces cerivisiae ‘1026’) and its growth medium or with Avotan - an antibiotic feed additive has been found by several workers to alter rumen fermentation patterns and animal performance. This experiment investigated the effect of inclusion of these supplements on their own or in combination in the concentrates of silage fed steers on rumen fermentation and animal performance.

Effects of yeast culture on rumen fermentation and liveweight gain in bulls fed isonitrogenous diets of barley/urea or barley/soya

1992 ◽  
Vol 1992 ◽  
pp. 211-211
Author(s):  
S.M. Elhassan ◽  
R.J. Wallace ◽  
C.J. Newbold ◽  
X.B. Chen ◽  
I.E. Edwards ◽  
...  
Keyword(s):  
Microbial Growth ◽  
Rumen Fluid ◽  
Rumen Fermentation ◽  
Feed Additive ◽  
Yeast Culture ◽  
Purine Derivatives ◽  
Stomach Tube ◽  
Cane Molasses ◽  
Microbial Nitrogen ◽  
Soyabean Meal

Yeast culture (YC) based on Saccharomyces cerevisiae is gaining increasing acceptance as a feed additive for ruminants. Production responses to YC have been reported in growing and lactating animals. It has been suggested that these responses are at least partly due to enhanced microbial growth in and microbial nitrogen flow from the rumen (Williams and Newbold, 1990). The aim of the present study was to investigate the effect of YC on rumen fermentation, microbial growth and liveweight gain in bulls fed isonitrogenous diets containing either urea or soya.Thirty two Limousin cross Friesian bulls (liveweight 344 kg) were allocated to treatments on the basis of previous growth rate and initial liveweight. Animals received mixed diets of barley/urea (92% rolled barley, 5% cane molasses, 1.5% urea and 1.5% minerals/vitamin mix) or barley/soya (86.75% rolled barley, 5% cane molasses, 0.75% urea, 6% soyabean meal and 1.5% minerals/vitamin mix) plus or minus 1.5 kg/ tonne YC (Yea-sacc1026 , Alltech, UK) (Table 1). YC was added to the diet prior to mixing. All rations were offered ad libitum twice daily until slaughter (460 kg). Rumen fluid samples were withdrawn by stomach tube 5 and 10 weeks after the beginning of the trial. The outflow of microbial nitrogen from the rumen was estimated from the appearance of purine derivatives in the urine as described previously (Chen et al., 1990).

The effect of yeast and distillery by-products on the fermentation in the rumen simulation technique (rusitec)

1992 ◽  
Vol 1992 ◽  
pp. 210-210
Author(s):  
C.J. Newbold ◽  
R.J. Wallace
Keyword(s):  
Rumen Fermentation ◽  
Simulation Technique ◽  
Yeast Cells ◽  
Feed Additive ◽  
Yeast Culture ◽  
Microbial Protein ◽  
Ruminant Diets ◽  
Commercial Yeast ◽  
Low Levels ◽  
By Products

The practice of adding low levels of non-commensal yeast and fungi to ruminant diets is increasingly gaining acceptance as a means of manipulating rumen fermentation to benefit production. Reported benefits include an increased degradability of forages in the rumen and an improved flow of microbial protein from the rumen (Williams and Newbold, 1990).Distillery by-products, such as pot ale syrup, are commonly included in ruminant diets as an energy source. However, pot ale syrup contains a substantial number of yeast cells. The aim of the present study was to establish if different yeasts and yeast-containing by-products had similar effects on rumen fermentation to those found with a commercial yeast culture feed additive.Two commercial Saccharomyces cerevisiae preparations (Alkosel, Alko Biotechnology, Finland and Yea-sacc, Alltech, UK), active dried baker's yeast (United Distillers, UK) and two pot ale syrups from the Inchgower and Dailuaine distilleries were compared for their effects on the fermentation in the rumen simulation technique (Rusitec).

The effect of supplemental yeast culture (yea-sacc) on patterns of rumen fermentation and growth performance of intensively fed bulls

1990 ◽  
Vol 1990 ◽  
pp. 116-116
Author(s):  
I E Edwards ◽  
T Mutsvangwra ◽  
J H Topps ◽  
G M Paterson
Keyword(s):  
Growth Rate ◽  
Growth Performance ◽  
Dairy Cows ◽  
Milk Yield ◽  
Growth Medium ◽  
Control Diet ◽  
Rumen Fermentation ◽  
Yeast Culture ◽  
Vitamin Supplements ◽  
Soyabean Meal

Supplementation with Yea-sacc - yeast (Saccharomyces cerivisiae ‘1026’) and its growth medium - has been found by several workers to alter rumen fermentation patterns, increase milk yield and growth rate in dairy cows and calves. This experiment investigated the effect of inclusion in the diet of intensively fed bulls on rumen fermentation and animal performance.Twenty-six Limousin x Friesian bulls reared to 3 months of age on a common diet were allocated to treatment on the basis of liveweight and previous growth rate at an average liveweight of 133 kg.The Treatments were Control ‘C” and Yea-sacc ‘YC’ - the control diet supplemented with Yea-sacc. (Alltech Inc. USA) at 1.5 kg/tonne of fresh feed. The diet was a mixture of barley and soyabean meal (Tables 1 & 2) with the inclusions of the latter reduced at 159 days. Mineral and vitamin supplements were included together with molasses to bind the ingredients.

scholarly journals Air-Dried Brown Seaweed, Ascophyllum nodosum, Alters the Rumen Microbiome in a Manner That Changes Rumen Fermentation Profiles and Lowers the Prevalence of Foodborne Pathogens

mSphere ◽  
2018 ◽  
Vol 3 (1) ◽  
Author(s):  
Mi Zhou ◽  
Martin Hünerberg ◽  
Yanhong Chen ◽  
Tim Reuter ◽  
Tim A. McAllister ◽  
...  
Keyword(s):  
Foodborne Pathogens ◽  
Brown Seaweed ◽  
Ascophyllum Nodosum ◽  
Fecal Microbiota ◽  
Rumen Fermentation ◽  
Feed Additive ◽  
E Coli ◽  
Rumen Microbiome ◽  
The Impact ◽  
Brown Macroalga

Maintaining product safety and reducing the carbon footprint of production are two sustainability goals of the livestock industry. The objective of this study was to study the impact of Tasco, a product derived from the brown macroalgaAscophyllum nodosum, on the rumen microbiome and its function. The inclusion of Tasco altered both rumen and fecal microbiota levels without affecting rumen fermentation. Tasco reduced fecalEscherichia colipopulations and specifically reduced the prevalence of Shiga toxin-producingE. coliO45, O103, O111, and O121 in feces. The findings of this study highlight the application of Tasco as a potential feed additive to reduce pathogen shedding in rams without interfering with ruminal metabolism.

scholarly journals Effect of essential and vegetable oil blend supplementation on animal performance, feed intake, rumen fermentation and rumen microbial populations of crossbred steers finished in a pasture system

2020 ◽  
Vol 9 (9) ◽  
pp. e738998057
Author(s):  
Camila Mottin ◽  
Francisco Augusto Ricci Catalano ◽  
Daniele Maggioni Chefer ◽  
Fabiana Lana de Araújo ◽  
Venício Macedo Carvalho ◽  
...  
Keyword(s):  
Essential Oil ◽  
Feed Intake ◽  
Crude Protein ◽  
Rumen Fermentation ◽  
Livestock Grazing ◽  
Neutral Detergent Fiber ◽  
Microbial Populations ◽  
Animal Performance ◽  
Oil Blends ◽  
Oil Blend

Recent years have seen a general increase in consumer concern regarding the profile of additives in animal feed and food sources, prompting the industry to study essential oil blends that have been promoted to replace synthetic products. This study evaluated the effect of essential oil blends supplementation on animal performance, feed intake, rumen fermentation and rumen microbial populations in crossbred steers finished in a pasture system. A total of 40 steers (½ Bons Mara vs. ½ Nellore) with a mean age of 20 ± 2.0 months and a mean body weight of 416.9 ± 5.56 kg were distributed in a completely randomized design with five diets and eight replications per diet. The five experimental diets were: CONT – basal diet, and oil blend inclusion in dosages of 1500, 3000, 4500 or 6000 mg/animal/d. Animal performance was similar among diets. The forage intake, crude protein, neutral detergent fiber, ethereal extract, non-fibrous carbohydrates, and the digestibility of crude protein, neutral detergent fiber, and non-fibrous carbohydrates were greater when essential oil blends were fed to steers. There was an increase in the concentrations of rumen ammonia nitrogen, and propionic and isovaleric volatile fatty acids when essential oil blends were used. The microbiological population of the rumen was similar among the five diets. Our results suggest that the inclusion of doses above 1500 mg/animal/ is high for livestock grazing on temperate pasture, further studies are needed to identify a promising dose to replace antimicrobial additives.

scholarly journals Inclusion of Yerba Mate (Ilex paraguariensis) Extract in the Diet of Growing Lambs: Effects on Blood Parameters, Animal Performance, and Carcass Traits

Animals ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 961
Author(s):  
Richard R. Lobo ◽  
Rafaela Vincenzi ◽  
Danny A. Rojas-Moreno ◽  
Annelise A. G. Lobo ◽  
Caroline M. da Silva ◽  
...  
Keyword(s):  
Dry Matter ◽  
Block Design ◽  
Carcass Traits ◽  
Experimental Period ◽  
Feed Additive ◽  
Ilex Paraguariensis ◽  
Yerba Mate ◽  
Animal Performance ◽  
Linear Quadratic ◽  
Hematological Indices

This study aimed to evaluate levels of yerba mate (Ilex paraguariensis) extract (YME), as a feed additive in the diets of growing lambs on serum biochemical parameters and hematological indices, animal performance, body metrics and carcass traits. Thirty-six entire (nine per treatment), male growing lambs, weighing 23.8 ± 3.7 kg, were fed the experimental diets which were treatments consisting of increasing levels of YME (0, 1, 2, and 4% inclusion on a dry matter [DM] basis) during an experimental period of 53 days. The experiment was carried out in a randomized block design, which initial body weight was used as blocking factor and the results were analyzed by orthogonal contrasts (linear, quadratic, and cubic). Yerba mate extract did not change the general health status of the animals; however, inclusions of up to 2% of the extract increased globulins (p = 0.05) and white blood cell count, as segmented neutrophils (p = 0.02) and lymphocytes (p = 0.04). Additionally, inclusion of up to 2% YME increased dry matter intake, final weight gain, total and daily gain (p < 0.05), also tended to increase ribeye area and reduce fat thickness (p < 0.10); however, YME above 2% of inclusion reduced animal productive parameters (p < 0.05). In conclusion, levels up to 2% of YME were beneficial to the health and productive parameters of growing lambs.

Influence of ionophores on in vitro fermentation by rumen fluid from sheep receiving yeast culture (Yeasacc; YC)

1991 ◽  
Vol 1991 ◽  
pp. 78-78
Author(s):  
C.J. Newbold ◽  
R.J. Wallace ◽  
I.M. Nevison
Keyword(s):  
Feed Efficiency ◽  
Rumen Fluid ◽  
Basal Diet ◽  
Rumen Fermentation ◽  
Animal Production ◽  
Yeast Culture ◽  
Microbial Protein ◽  
In Vitro Fermentation ◽  
Wide Range

A wide range of compounds has been described which have the potential to improve animal production by manipulating the rumen fermentation. Prominent among these rumen modifiers are the ionophores. Ionophores, such as monensin and tetronasin, improve feed efficiency, partly by increasing the flow of amino-N from the rumen and partly by stimulating the production of propionate in the rumen with an associated reduction in the production of methane (Russell and Strobel, 1988). Recently there has been increasing interest in the use of yeast culture (YC) and other fungal preparation to modify the rumen fermentation. These products have been shown to increase bacterial numbers within the rumen with an associated increase in the breakdown of fibre and supply of microbial protein (Williams and Newbold, 1990). YC has also been reported to increase the production of propionate in the rumen. Little appears to be known about the effect a combination YC and an ionophore would have on the rumen fermentation. This study describes the effects of the ionophores monensin and tetronasin on the fermentation of hay by rumen fluid from sheep fed a basal diet with or without YC.

Effects of monensin and/or yeast culture fed in the diet or infused into the abomasum on rumen fermentation and concentrations of glucose, urea, insulin, gastrin and cholecystokinin in blood of sheep

1992 ◽  
Vol 1992 ◽  
pp. 213-213
Author(s):  
P.P. Frumholtz ◽  
C.J. Newbold ◽  
E.R. Ørskov ◽  
R.J. Wallace
Keyword(s):  
Saccharomyces Cerevisiae ◽  
Weight Gain ◽  
Blood Parameters ◽  
Rumen Fermentation ◽  
Yeast Culture ◽  
Digestive Physiology ◽  
Plasma Gastrin ◽  
Modes Of Action ◽  
Ruminal Digestion

Monensin and yeast culture are known to alter rumen fermentation. Their modes of action appear to be different, and a recent study showed that the combination of both yeast culture (YC) and monensin stimulated weight gain in bulls by 12-13% over monensin alone (Spedding, 1990). However, Edwards et al. (1991) found no complementary effects between YC and avoparcin when they were combined in a silage diet for steers. In addition to its action in the rumen, monensin is known to affect post-ruminal digestion (Armstrong, 1984). Viable Saccharomyces cerevisiae have been isolated from the duodenal digesta of sheep fed YC (Newbold et al., 1990), suggesting that YC too might have post-ruminal effects. The aim of the current study was to assess the effect of monensin and/or yeast culture in the diet or infused into the abomasum on rumen fermentation and blood parameters, and also on digestive physiology by monitoring plasma gastrin, insulin and CCK-8 concentration.

scholarly journals The yeast culture Saccharomyces cerevisiae (Strain 47) as manipulator of rumen fermentation in postpartal period of dairy cows

2005 ◽  
Vol 53 (1) ◽  
pp. 27-34
Author(s):  
Petr Doležal ◽  
Jan Doležal
Keyword(s):  
Saccharomyces Cerevisiae ◽  
Rumen Fluid ◽  
Treated Group ◽  
Rumen Fermentation ◽  
Matter Content ◽  
Yeast Culture ◽  
Dry Matter Content ◽  
The Difference ◽  
Positive Effect ◽  
Lower Production

In the present study, examined was the effect of a yeast culture (Saccharomyces cerevisiae, Strain 47) on rumen fermentation of cows. Animals received a diet consisting of good maize silage with a higher dry matter content (16  kg), 16  kg of clovergrass haylage, 3  kg of meadow hay and 7.5  kg feed mixture. The yeast culture was added to the mixture in the dose 6  g/day and cow. The supplement of yeast culture showed a positive effect on VFA production in comparison with control (1.16±0.013B vs. 0.84±0.063A  g/ 100 ml), and lower production of lactic acid. The utilisation of ammonia was higher by cows in treated group (8.68±0.084A mmol/L). The difference in number of protozoa of cows in the control and experimental groups was significant (302.0±12.349A vs. 359.2±1.304B ths /1 ml of rumen fluid).

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