Rumen-Undegradable Protein Supplementation Effects on Early Weaned Calves Grazing Annual Ryegrass

Embryo survival rate is a major factor determining litter size and overall reproductive efficiency in sheep. In sheep, as ovulation rate increases the proportion of embryos surviving decreases. There is evidence, from cattle, that feeding a rumen-undegradable protein supplement enhances embryo survival rate. The objective of this experiment was to determine the effect on embryo survival rate in high prolific ewes of feeding an energy or protein supplement.

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Effect of rumen-undegradable protein supplementation and fresh forage composition on nitrogen utilization of dairy ewes

Journal of Dairy Science ◽

10.3168/jds.2010-3656 ◽

2011 ◽

Vol 94 (1) ◽

pp. 416-425 ◽

Cited By ~ 10

Author(s):

C. Mikolayunas ◽

D.L. Thomas ◽

L.E. Armentano ◽

Y.M. Berger

Keyword(s):

Protein Supplementation ◽

Nitrogen Utilization ◽

Dairy Ewes ◽

Rumen Undegradable Protein

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The effect of varying protein degradability on mohair fibre characteristics and liveweight gain in angora goats

Proceedings of the British Society of Animal Production (1972) ◽

10.1017/s0308229600022054 ◽

1992 ◽

Vol 1992 ◽

pp. 94-94

Author(s):

S.A. Austin ◽

D. Aliakbar ◽

R.A. Cooper ◽

J.A. Kirk

Keyword(s):

Fibre Diameter ◽

Fibre Production ◽

Primary Objective ◽

Protein Supplementation ◽

The Usa ◽

Yield Quality ◽

Angora Goats ◽

Rumen Undegradable Protein ◽

The Uk ◽

Protein Degradability

The primary objective of Angora goat producers is to optimise yields of high quality mohair, characterised by long staples of fine fibres. There is also now an increased interest in the concurrent production of goat meat as an additional source of income. Protein supplementation has been shown to affect mohair yield, quality and liveweight gain in Angora goats both in the USA (Shelton and Huston, 1966) and more recently in the UK (Shahjalal et al., 1991). Throckmorton et al. (1982) detected an improvement in liveweight gain and fibre production when Australian Angoras were fed a supplement high in rumen undegradable protein (UDP) but the effect of protein degradability has not yet been established, particularly under UK conditions. The aim of this trial was to determine the effect of varying protein degradability on yield, staple length and fibre diameter of mohair, and on liveweight gain of British Angora goats.

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Impacts of Rumen Degradable or Undegradable Protein Supplementation with or without Salt on Nutrient Digestion, and VFA Concentrations

Animals ◽

10.3390/ani11113011 ◽

2021 ◽

Vol 11 (11) ◽

pp. 3011

Author(s):

Marley Manoukian ◽

Timothy DelCurto ◽

Janessa Kluth ◽

Tanner Carlisle ◽

Noah Davis ◽

...

Keyword(s):

Protein Supplementation ◽

Neutral Detergent Fiber ◽

Delivery Method ◽

Flow Rates ◽

Ruminal Ph ◽

Nutrient Digestion ◽

Rumen Undegradable Protein ◽

Dietary Treatments ◽

Supplement Intake ◽

Degradable Protein

The objectives of this study were to evaluate the effect of differences in protein type and delivery method on rumen dynamics and nutrient digestion. Cows were allotted to rumen degradable protein (RDP) or rumen undegradable protein (RUP) and self-fed (SF) salt-limited pressed blocks or hand-fed (HF) loose supplement, resulting in four dietary treatments. There was a delivery effect (p = 0.04) on neutral detergent fiber (NDF) intake, as the SF animals consumed more NDF than HF animals. The RDP-SF animals had greater NDF digestibility (p = 0.04) and water intake (p = 0.03) than the three other treatments. Supplement intake displayed a protein type effect (p = 0.03), as RDP-supplemented animals consumed more supplement on a g·kg body weight (BW)−1 d−1 basis than RUP animals. There was an effect of protein type (p = 0.02) and delivery method (p = 0.03) on fluid flow rate, with RUP and HF cows having greater liquid flow rates. Ruminal pH was lower (p < 0.01) in RDP-HF cows than RDP-SF cows at all hours, except 4-h post-feeding. RDP-SF animals had the greatest (p < 0.01) concentrations of ruminal ammonia. Valerate ruminal concentrations were greater (p = 0.04) in RDP supplemented animals compared to RUP supplemented animals. In conclusion, self-fed supplements containing RDP may enhance the use of low-quality forages and increase ruminal ammonia concentrations.

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Fish meal supplementation of sugar beet feed or barley based concentrates for finishing beef cattle fed on grass silage diets

Proceedings of the British Society of Animal Production (1972) ◽

10.1017/s0308229600017773 ◽

1988 ◽

Vol 1988 ◽

pp. 141-141 ◽

Cited By ~ 1

Author(s):

R.M. Kay ◽

J.I. Harland

Keyword(s):

Sugar Beet ◽

Fish Meal ◽

Protein Supplementation ◽

List Type ◽

Growth Responses ◽

Finishing Cattle ◽

Protein Requirements ◽

Grass Silage ◽

Rumen Undegradable Protein ◽

Finishing Beef Cattle

Whilst it is predicted that for finishing cattle (over 350 kg at start) fed grass silage diets, rumen degradable protein (RDP) should provide all protein requirements, previous studies have shown very variable growth responses from protein supplementation of cereal or starchy concentrates fed with grass silage. The protein source usually used being white fish meal which is high in rumen undegradable protein (UDP). This experiment investigated the response to fish meal supplementation of an energy concentrate based on either barley (starchy) or sugar beet feed (SBF, fibrous) when fed with good quality (64‘D’) grass silage to cattle in the finishing period of a traditional 18 month semi-intensive system.Forty two 15 month and twelve 14 month old Friesian steers were blocked by weight and allocated at random to treatments (weights as fed):1. 2kg barley plus minerals (2B)2. 1.8 kg barley plus 0.2 kg fish meal (2BF)3. 2 kg sugar beet feed plus minerals (2S)4. 1.8 kg sugar beet feed plus 0.2 kg fish meal(2SF)5. 4 kg sugar beet feed plus minerals (4S)6. 4 kg barley plus minerals (4B)

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The Effect of Postpartum Rumen Undegradable Protein Supplementation on Hepatic Gluconeogenic Enzyme Activities in Dairy Cows with Fatty Liver

International Journal for Vitamin and Nutrition Research ◽

10.1024/0300-9831.72.5.336 ◽

2002 ◽

Vol 72 (5) ◽

pp. 336-340 ◽

Cited By ~ 3

Author(s):

Absolom Murondoti ◽

Musavengana Tivapasi ◽

Math Geelen ◽

Theo Wensing ◽

Anton Beynen

Keyword(s):

Fatty Acids ◽

Fatty Liver ◽

Phosphoenolpyruvate Carboxykinase ◽

Serum Insulin ◽

Test Group ◽

Liver Glycogen ◽

Protein Supplementation ◽

Control Group ◽

Nonesterified Fatty Acids ◽

Rumen Undegradable Protein

The effect of postpartum supplementation with rumen undegradable protein on the activities of gluconeogenic enzymes was studied in cows with induced fatty liver. Prepartum liver and blood samples were collected at about one week before the expected date of calving and postpartum samples were collected at 10 and 20 days (d) postpartum. At 10 d postpartum, concentrations of serum nonesterified fatty acids and hepatic triacylglycerol levels were higher than at one wk before parturition. The postpartum increases in nonesterified fatty acids and hepatic triacylglycerols were significantly higher in the cows that were fed extra protein than in the control cows. There were no differences between the groups with regard to postpartum changes in the concentrations of plasma glucose, liver glycogen, and serum insulin. The postpartum increase in the activity of fructose 1-6-bisphosphatase was higher in the test group than in the control group, but the increase in the activity of glucose-6-phosphatase was lower. There were no group differences in the postpartum activities of phosphoenolpyruvate carboxykinase, pyruvate carboxylase, and propionyl-CoA carboxylase. Our results suggest that intense lipolysis released more glycerol in the protein-supplemented cows, which stimulated the activity of fructose 1-6-bisphosphatase. However, postpartum rumen undegradable protein supplementation did not affect the activities of the other enzymes of gluconeogenesis, and fatty liver was even exacerbated.

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Evaluation of nitrogen-delivery methods for stocker cattle grazing annual ryegrass

Translational Animal Science ◽

10.1093/tas/txab048 ◽

2021 ◽

Author(s):

P A Gunter ◽

M K Mullenix ◽

L C Burdette ◽

R B Muntifering

Keyword(s):

Repeated Measures ◽

Stocking Density ◽

Cattle Grazing ◽

Protein Supplementation ◽

Experimental Unit ◽

Annual Ryegrass ◽

Delivery Methods ◽

Crimson Clover ◽

Stocker Cattle ◽

Total Gain

Abstract A 2-yr grazing experiment was conducted to evaluate efficacy of nitrogen (N) fertilization, interseeded legumes and protein supplementation for N delivery to stocker cattle grazing annual ryegrass (Lolium multiflorum). Each yr, 90 steers (initial BW, 241 ± 13 kg) were assigned to the following N-delivery methods, with or without monensin fed in a free-choice mineral supplement as a 5 x 2 factorial arrangement of treatments: ryegrass fertilized with 112 kg N/ha (NFERT); ryegrass interseeded with crimson clover (CC, Trifolium incarnatum); ryegrass interseeded with arrowleaf clover (AC, Trifolium vesiculosum); ryegrass plus distillers dried grains with solubles (DDGS) supplemented at 0.65% BW daily; and ryegrass plus whole cottonseed (WCS) supplemented at 0.65% BW daily. Pastures within the interseeded-clover and protein-supplementation treatments were fertilized with 56 kg N/ha at time of establishment. Steers were weighed every 28 d, and forage mass (FM, kg DM/ha) was measured concurrently using the destructive harvest/disk meter double-sampling method. Each of 30 0.81-ha paddocks was stocked initially with 3 ‘tester’ steers, and stocking density (steers/ha) was adjusted using ‘put-and-take steers’ based on changes in FM and steer BW in order to maintain a uniform forage allowance (FA) of 1 kg DM/kg steer BW. Grazing was discontinued on May 11, 2016 in Yr 1 and May 10, 2017 in Yr 2 following 140 and 84 d of grazing, respectively. Data were analyzed as a completely randomized design with repeated measures for which pasture (n = 3) was the experimental unit. Ionophore inclusion did not affect (P > 0.10) any variable measured. Mean FM differed (P < 0.0001) between yr and among N-delivery methods (P < 0.10), and mean FA differed (P = 0.005) among N-delivery methods. Steer ADG differed among N-delivery methods (P = 0.02) and between yr (P < 0.001), whereas total gain/ha differed (P < 0.0008) among N-delivery methods, but not between yr (P = 0.78). Stocking density differed among N-delivery methods (P = 0.02) and between yr (P < 0.0001), and grazing-days/ha differed between yr (P < 0.0001) and among N-delivery methods (P = 0.001). Results indicate that supplementation with a high-protein by-product feed for cattle grazing annual ryegrass maintained ADG, total gain/ha and grazing-days/ha compared with N-fertilized annual ryegrass, and increased ADG, total gain/ha and grazing-days over interseeded legumes.

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