scholarly journals Mango (Mangifera indica) seed kernels as untraditional source of energy in Rahmani sheep rations

2019 ◽  
Vol 43 (1) ◽  
Author(s):  
Hamed A. A. Omer ◽  
Mohamed A. Tawila ◽  
Sawsan M. Gad ◽  
Soha S. Abdel-Magid
Keyword(s):  
Crude Protein ◽  
Rumen Fluid ◽  
Nutrient Digestibility ◽  
Sampling Time ◽  
Water Metabolism ◽  
Ruminal Ph ◽  
Yellow Corn ◽  
Live Body Weight ◽  
Mango Seed ◽  
Dietary Treatments

Abstract Background The present work aimed to investigate the impact of partial replacement yellow corn by mango seed kernels (MSK) at different levels of (0, 25, and 50%) on feed and water consumption, water metabolism, nutrient digestibility, nitrogen balance, and rumen fluid parameters. Methods Twelve mature male Rahmani sheep of about 58.39 ± 1.22 kg live body weight on average were used to investigate the influence of replacing yellow corn contents (45% in the control ration) by mango seed kernels (MSK) at different levels (0, 25, and 50%) that equal (0, 11.25, and 22.5% of total ration contents) on feed and water intakes, water metabolism, nutrient digestibility coefficients, nitrogen utilization, and some rumen fluid parameters. The animals were randomly assigned to three experimental groups (four animals in each treatment). Sheep fed rations are composed of 50% concentrate feed mixture (CFM) and 50% peanut vein hay (PVH) at portion 3% dry matter (DM) of live body weight (LBW). Results The results showed that values of crude protein (CP), crude fiber (CF), and nitrogen-free extract (NFE) of MSK and yellow corn were similar. Meanwhile, MSK has superior ether extract content compared to yellow corn; meanwhile, ash content of yellow corn was lower than ash content of MSK. All tested CFM were isonitrogenous (16.17% CP), but it differs in their contents of gross and digestible energy. On the other hand, all experimental total mixed rations (TMR) were isonitrogenous (14.52% CP) and isocaloric (4177 kcal/kg DM in average). Dietary treatments significantly (P < 0.05) decreased total dry matter intake (DMI) and crude protein intake (CPI) that expressed as (g/h/day, g/kgW0.75, and kg/100 kg LBW) or gross energy intake (GEI) and digestible energy intake (DEI) that expressed as (Mcal/h/day, kcal/kgW0.75, and Mcal/100 kg LBW). Inclusion MSK in sheep ration insignificantly (P > 0.05) increased drinking water by 20% and 6.89% for experimental groups fed TMR2 and TMR3, respectively, compared to the control one (TMR1). Incorporation MSK in the rations significantly (P < 0.05) increased insensible losses of water. Dietary treatments significantly (P < 0.05) increased nutrient digestibility coefficients of DM, organic matter (OM), CP, CF, and NFE. Meanwhile, it significantly (P < 0.05) decreased EE digestibility. On the other hand, both values of total digestible nutrient (TDN) and digestible crude protein (DCP) were significantly (P < 0.005) improved. Nitrogen retention (NR) (NR % of nitrogen intake (NI) and NR % of digested nitrogen (DN)) values were significantly (P < 0.05) increased with increasing level of MSK in the sheep ration. Inclusion MSK significantly (P < 0.05) increased ruminal pH; however, it had no significant (P > 0.05) on both ammonia nitrogen (NH3-N) and total volatile fatty acid (TFVA) concentrations. Sampling time at 3 h post feeding significantly (P < 0.05) decreased ruminal pH in comparison with before and 6 h post feeding; meanwhile, sampling time had no significant effect (P > 0.05) on NH3-N concentration. Dietary treatment significantly (P < 0.05) increased the interaction between treatments and sampling time for ruminal pH. However, no interaction between treatments and sampling time was observed for both NH3-N and TVFA concentrations. Conclusion The present results revealed that replacement up to 50% of yellow corn by MSK as alternative source of energy could be useful in feeding sheep without any adverse effect on digestion and fermentation processing. Also, it can be used to depress the rations cost.

330 3-nitrooxypropanol Supplementation of a Forage Diet Decreased Enteric Methane Emissions from Beef Cattle Without Affecting Apparent Total-tract Digestibility

2021 ◽  
Vol 99 (Supplement_3) ◽  
pp. 186-187
Author(s):  
Aklilu Alemu ◽  
Xiu Min Zhang ◽  
Maik Kindermann ◽  
Karen A Beauchemin
Keyword(s):  
Crude Protein ◽  
Dry Matter ◽  
Control Diet ◽  
Nutrient Digestibility ◽  
Ch4 Emissions ◽  
Ruminal Ph ◽  
Enteric Methane ◽  
Ruminant Diets ◽  
Dietary Treatments ◽  
High Forage

Abstract Supplementation of ruminant diets with the investigational methane (CH4) inhibitor 3-nitrooxypropanol (3-NOP; DSM Nutritional Products, Switzerland) is as a promising mitigation strategy. However, most studies have examined high grain or mixed forage-concentrate diets. The objective of this study was to evaluate the effects of supplementing a forage diet with 3-NOP on rumen fermentation, CH4 emissions and apparent total-tract nutrient digestibility. Eight ruminally cannulated beef heifers (BW = 514 kg) were randomly allocated to two treatments in a crossover design with 49-d periods. Dietary treatments were: control, high-forage diet (90% forage DM basis) without 3-NOP; and NOP, control diet supplemented with 150 mg 3-NOP/kg DM. After a 14-d diet adaption, dry matter (DM) intake (DMI) was recorded daily. Rumen contents were collected on days 17 and 28 for volatile fatty acid (VFA) analysis, whereas ruminal pH was continuously monitored from day 20 to 27. Diet digestibility was measured on day 38 to 41 by total collection of feces. Enteric CH4 emissions were measured on days 46 to 49 in chambers. Dry matter intake was lower (P = 0.001) for NOP (10.0 kg/d) as compared with control (10.2 kg/d). However, DM, neutral and acid detergent fiber, and crude protein digestibilities were similar between treatments (P ≥ 0.29). Although total VFA concentration was not affected by treatment (P = 0.19), the reduction in acetate and increase in propionate proportion for NOP lowered (P &lt; 0.001) the acetate to propionate ratio by 18% as compared with control. Mean pH was lower (P = 0.03) for control (6.46) than NOP (6.57). Furthermore, CH4 yield (g/kg DMI) was 21.6% less (P &lt; 0.001) for NOP relative to control (25.5 g/kg DMI). Overall, the results indicate that enteric CH4 emissions were effectively decreased with 3-NOP supplementation of a forage diet without affecting apparent total-tract digestibility of nutrients.

scholarly journals 413 Effect of chitosan inclusion and dietary crude protein level on rumen fermentation in beef heifers fed a total mixed ration

2019 ◽  
Vol 97 (Supplement_3) ◽  
pp. 166-167
Author(s):  
Stuart Kirwan ◽  
Tommy Boland ◽  
Eleonora Serra ◽  
Gaurav Rajauria ◽  
Karina Pierce
Keyword(s):  
Crude Protein ◽  
Volatile Fatty Acids ◽  
Rumen Fluid ◽  
Rumen Fermentation ◽  
Ruminal Fermentation ◽  
Beef Heifers ◽  
Total Mixed Ration ◽  
Ruminal Ph ◽  
Dietary Crude Protein ◽  
Dietary Treatments

Abstract Chitosan (N-acetyl-D-glucosamine polymer) is a natural biopolymer, which is the second most abundant organic compound on earth, found in lower plants and some arthropods and crustaceans. Studies with ruminants have shown that supplementing with chitosan can alter ruminal fermentation, including higher propionate concentration and lower acetate to propionate ratio, improving the energy efficiency within the rumen though data on nitrogen metabolism is lacking. Therefore, the objective of this study was to evaluate the effects of chitosan with different dietary crude protein (CP) inclusion on rumen fermentation in beef heifers. Eight ruminally cannulated Belgian Blue x Holstein Friesian heifers (752 ± 52Kg BW) were allocated one of four dietary treatments in a 2 x 2 factorial Latin Square design (n = 8). Diets were offered as total mixed ration (TMR) consisting of grass silage plus concentrate. Diets were offered once daily ad libitum. Dietary treatments were as follows: high CP (16%) +/- chitosan (10g kg-1 DMI) supplementation (HP+) or (HP-) and low CP (12%) +/- chitosan supplementation (LP+) or (LP-). Experimental periods were 25d in duration (14 d dietary adaptation and 10 d sampling). Rumen fluid was collected via cannula every 2 h post feeding for analysis of ruminal pH, ammonia (NH3) and volatile fatty acids (VFA) over a 48-hour period. Data was analysed using Proc Mixed procedure in SAS. Significant differences were considered when P &lt; 0.05. Dietary treatment had no effect on ruminal pH (P &gt; 0.05). Chitosan supplementation had no effect on ruminal NH3 and VFA concentrations (P &gt; 0.05), whereas, animals offered 16% CP had higher concentrations of ruminal NH3 (P &lt; 0.001). In conclusion, supplementing a TMR diet fed to beef heifers with chitosan had no effect on rumen fermentation. However, reducing dietary CP concentration fed to beef animals resulted in lower rumen NH3 concentrations.

scholarly journals Effects of Different Concentrate Feed Proportions on Ruminal Ph Parameters, Duodenal Nutrient Flows and Efficiency of Microbial Crude Protein Synthesis in Dairy Cows During Early Lactation

Animals ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 267
Author(s):  
Katharina Bünemann ◽  
Maren Johannes ◽  
Rolf Schmitz ◽  
Julia Hartwiger ◽  
Dirk von Soosten ◽  
...  
Keyword(s):  
Crude Protein ◽  
Dry Matter ◽  
Individual Variability ◽  
Nutrient Digestibility ◽  
Group Differences ◽  
Early Lactation ◽  
Nutrient Flows ◽  
Ruminal Ph ◽  
Microbial Efficiency ◽  
Matter Basis

The aim of the study was to examine different pH parameters, such as variations throughout the day, depending on differing concentrate feed proportions. Moreover, special attention was payed to individual variation in microbial efficiencies (microbial crude protein/fermented organic matter) and their relation to ruminal pH, nutrient flows and digestibilities. For this, cows were grouped according to microbial efficiency (more, n = 5, vs. less efficient cows, n = 4). After calving, thirteen ruminally cannulated pluriparous cows, including nine duodenally cannulated animals, were divided into groups offered rations with a lower (35% on dry matter basis, n = 7) or a higher (60% on dry matter basis, n = 6) concentrate feed proportion. Ruminal pH parameters were assessed continuously by using intraruminal probes. Nutrient flows, nutrient digestibility and microbial efficiency were determined for duodenally cannulated cows. For most ruminal pH parameters it seemed that individual variability was higher than the treatment effect. However, a positive relationship between actual concentrate intake and diurnal pH fluctuations was found. Besides, the effect of individually different microbial efficiencies was assessed. Again, there were no group differences for pH parameters. However, nutrient flows were significantly higher in more efficient cows, whereas digestibilities were lower in in more efficient cows.

scholarly journals Effect of replacing a commercial pelleted calf meal with lucerne leaf-meal on performance of neonatal and transitional Holstein heifer calves

2018 ◽  
Vol 58 (5) ◽  
pp. 834
Author(s):  
Joyce L. Marumo ◽  
Florence V. Nherera-Chokuda ◽  
Jones W. Ng'ambi ◽  
Mukengela C. Muya
Keyword(s):  
Crude Protein ◽  
Rumen Fluid ◽  
Net Energy ◽  
Rumen Degradation ◽  
Leaf Meal ◽  
Large Ruminant ◽  
Gross Energy ◽  
Dietary Treatments ◽  
Phosphorus Levels

A study was conducted to (i) determine in vitro ruminal dry matter (DM) fermentation kinetics, effective rumen degradation of DM (EDDM), (ii) estimate energy fractions supply of lucerne leaf-meal (LLM) and composite diets of LLM with commercial pelleted calf meal and also (iii) determine the effects of substituting commercial pelleted calf meal with LLM on the intake, % ruminal nitrogen balance (RNB) and growth of the neonates (21–42 days old) and transition (43–56 days old) Holstein heifer calves. Forty-eight Holstein heifer calves were randomly assigned to three different dietary treatments in a complete randomised design of: (a) pelleted concentrate (PEL), (b) 65% pelleted concentrate: 35% LLM (P65 L35); (c) and 50% pelleted concentrate: 50% LLM (P50 L50). The study comprised of two experiments: neonatal (Experiment 1) and transition (Experiment 2) phases. Lucerne leaf-meal had gross energy of 16.2 MJ/kg and 25% crude protein DM. PEL diet was high in starch and bound protein compared with other diets. Inclusion of LLM in diets increased calcium levels but tended to decrease phosphorus levels. Calves were weaned at the age of 56 days. The feeds were incubated for 0, 4, 10, 18, 24 and 48 h using a DaisyII incubator. Rumen fluid was obtained from calves <50 days old. Large Ruminant Nutrition System was used to predict %RNB and energy density of the diets during neonatal and transition phases. Higher mean EDDM levels were found with LLM inclusions whereas fractions a, a + b and c did not vary. Neonates on diet C had higher (P < 0.05) daily DM and crude protein intakes, %RNB, total digestible nutrients, net energy at maintenance and net energy at gain during neonatal phase. Performance of calves was similar during the transition phase. LLM should be considered as a concentrate replacement in diets of neonates and calves.

scholarly journals Nutrient intake, digestibility and growth performance of Yankasa sheep fed urea-treated or untreated rice straw with supplements

2021 ◽  
Vol 37 (1) ◽  
pp. 61-70
Author(s):  
M. B. Ngele ◽  
T. A. Adegbola ◽  
S. E. F. Bogoro ◽  
M. Abubakar ◽  
D. J. U. Kalla
Keyword(s):  
Growth Performance ◽  
Rice Straw ◽  
Nutrient Intake ◽  
Crude Protein ◽  
Poultry Litter ◽  
Dietary Treatment ◽  
Nutrient Digestibility ◽  
Daily Weight Gain ◽  
Feed Conversion ◽  
Dietary Treatments

A study was conducted at the Abubakar Tafawa Balewa University (ATBU) Research and Teaching Farm between December and May 2006 to determine nutrient intake, digestibility and growth performance in Yankasa rams fed urea-treated (UTRS) and untreated rice straw (URS) with supplementation. Thirty-two (32) Yankasa rams with an average weigh of 17.5kg, and aged 1.5 to 2 years old were alloted to eight (8) dietary treatments with four (4) rams per treatment in a 2 x 4 factorial design. The two basal feeds were urea0treated rice straw (UTRS) and untreated rice straw (URS). The supplements were maize bran (MB), MB + sun-dried poultry litter (MB + SDPL), MB + ensiled poultry litter (MB+ EPL) and MB + cotton seed cake (MB + CSC). Total dry matter intake (TDMI), daily basal feed intake (DBFI) were significant (P<0.05) across dietary treatments. Animals on supplements MB and MB+CSC for both UTRS and URS recorded the lowest and highest DBFI. The digestible crude protein intake (DCPI) and digestible organic matter intake (DOMI) were high for rams on UTRS and the values ranged from 17.72 to 28.36g/d and 288.81 to 482.66g/d for DCPI and DOMI respectively. Nutrient digestibility was improved by treatment of straw and supplementation. However, crude protein digestibility was similar for animals fed URS but, significantly (P<0.05) lower compared to those fed UTRS which were also similar across supplements. Average daily weight gain ranged from 53.58 to 91.18g/d across dietary treatment with animals on supplement MB recording the lowest (53.58 and 61.43g/d for URS and UTRs respectively) and those fed supplement MB+CSC the highest (81.38 and 91.18g/d fro URS and UTRS respectively) irrespective of straw treatment. Feed conversion ratio (FCR) was least for animals on supplement MB+CSC for both URS and UTRs, indicating that this supplement (MB+CSC) influenced feed utilization more positively. From the results of this trial, it may be concluded that straw treatment and/or supplementation can enhance crop residue utilization by sheep. however, mixed supplements especially MB+CSC were more efficient in enhancing the utilization of the straw and consequently animal performance.    

scholarly journals Utilization of Bovine Blood-Rumen Digesta Mixture as Replacement for Soybean Meal and Groundnut Cake Feedstuff in Growing Pigs

2020 ◽  
Vol 46 (1) ◽  
pp. 124-131
Author(s):  
S. O. Odukoya ◽  
A. A. Saka ◽  
O. Y. Adedeji ◽  
A. O. Akingbade ◽  
T. I. Ijadunola
Keyword(s):  
Soybean Meal ◽  
Crude Protein ◽  
Nutrient Digestibility ◽  
Growing Pigs ◽  
Ether Extract ◽  
Bovine Blood ◽  
Crude Fibre ◽  
Groundnut Cake ◽  
Nitrogen Free Extract ◽  
Dietary Treatments

Mixture of bovine blood and rumen digesta (BBRDM) was evaluated for 56 days as a replacement for soybean meal (SBM) and groundnut cake (GNC) at 100% on protein to protein basis in the diets of growing pigs to assess the nutritive value of BBRDM on the growth performance, nutrient digestibility and cost benefits. Hence, a total of 18 growing pigs were allotted on weight equalization basis into three dietary treatments consisting of six pigs per treatment in a completely randomized design. Three diets were formulated such that T : served as the control diet without BBRDM but contained both soybean meal and 1 groundnut cake. T : BBRDM replaced soybean meal and T : BBRDM replaced groundnut 2 3 cake. Result indicated that BBRDM contained 28.65% crude protein, 13.17% ether extract, 5.26% crude fibre, 11.29% ash and 31.65% nitrogen free extract. Dietary treatments did not significantly (P>0.05) influenced the growth parameters observed in this study. Although there were no significant (P>0.05) difference on the nutrient digestibility parameters investigated but birds in T recorded highest numerical values for crude protein (77.23), 3 crude fibre (62.46%), ether extract (92.33%), nitrogen free extract (89.61%), ash (70.28%) and nutrient dry matter (91.67%) while the least values were obtained from birds in T . Cost 1 of feed decreased with the inclusion of BBRDM while the cost per weight gain also improved with the replacement of the conventional feed ingredients. The result also showed that an appreciable amount of money was saved when BBRDM was included in the ration of growing pigs. It is therefore concluded that BBRDM could be used as an animal protein source to compliment plant protein source such as soybean meal and groundnut cake in the diet of growing pigs.

Liquid-phase denaturant gradient gel electrophoresis profiles of rumen bacteria from Brahman cross steers selected into two groups on the basis of post-weaning liveweight gain on low crude protein pasture

2012 ◽  
Vol 52 (7) ◽  
pp. 647 ◽  
Author(s):  
E. D. Martínez ◽  
K. E. Turnbull ◽  
S. P. Quigley ◽  
S. J. Streeter ◽  
A. Swain ◽  
...  
Keyword(s):  
Liquid Phase ◽  
Gel Electrophoresis ◽  
Crude Protein ◽  
Rumen Fluid ◽  
Rumen Bacteria ◽  
Ruminal Ph ◽  
Gradient Gel Electrophoresis ◽  
Denaturant Gradient Gel Electrophoresis ◽  
The Relationship ◽  
Protein Diets

Two experiments were conducted to evaluate the relationship between rumen liquid-associated bacterial community structures and post-weaning liveweight gain (LWG) of Brahman crossbred steers. Bacterial diversity was assessed using denaturant gradient gel electrophoresis (DGGE). In Experiment 1, 16 steers were selected from a group of 100 steers by pairing steers with the same weaning weight, but different LWG 90 days after weaning (n = 8 highest growth, 0.21 ± 0.01 kg/day; and n = 8 lowest growth –0.07 ± 0.01 kg/day). Thereafter, steers were allocated to a 28-day pen study and fed Mitchell grass (Astrebla spp.) hay to examine DM intake and digestibility, rumen parameters and rumen microbial community in these two groups. Rumen fluid samples were taken by stomach tube 3 h after feeding on the last day of the pen phase. In Experiment 2, 12 pairs of weaned steers were selected from a group of 203 steers on the same basis as Experiment 1. The post-weaning LWG were 0.20 ± 0.03 and 0.02 ± 0.03 kg/day for the 12 highest and 12 lowest growth animals selected, respectively. Steers then grazed dry season Sabi grass (Urochloa mosambicensis) dominant pasture for 21 days, before rumen sampling 3 h after morning grazing by stomach tubing on the last day. In Experiment 1, there were no significant differences between the two groups in DM intake, digestibility, ruminal pH, total volatile fatty acid (VFA) concentration or the VFA proportion. In Experiments 1 and 2, rumen ammonia-N concentration was similar between LWG groups and there was no evidence of a relationship between liquid-phase DGGE profiles of rumen bacteria and high or low post-weaning LWG using multivariate analyses. Furthermore, the number of detected DGGE bands, the Shannon–Wiener and evenness indexes were not different between LWG groups. This DGGE analysis of the most abundant groups of rumen fluid-associated bacteria suggests that microbial populations were not related with the differences observed in post-weaning LWG within a group of weaners fed low crude protein diets.

scholarly journals Nutritional potential of differently processed Cajanus cajan leaves on nutrient digestibility and nitrogen utilization of West African dwarf growing rams fed Panicum maximum

2020 ◽  
Vol 47 (2) ◽  
pp. 208-216
Author(s):  
I. A. Adebisi ◽  
A. B. Ajibike ◽  
O. O. Okunola ◽  
J. A. Alalade ◽  
H. O. Amusa ◽  
...  
Keyword(s):  
Body Weight ◽  
Cajanus Cajan ◽  
Crude Protein ◽  
Protein Digestibility ◽  
Nutrient Digestibility ◽  
West African ◽  
Nitrogen Utilization ◽  
Panicum Maximum ◽  
West African Dwarf ◽  
Dietary Treatments

Browse legume plants particularly pigeon pea forage generates a lot of underutilized leaves which if properly harnessed can be a cheaper source of nutrients for small ruminant animal production, during dry season feed shortages. In this study, the nutrient digestibility and nitrogen utilization of West African dwarf growing rams fed differently processed Cajanus cajan leaves and Panicum maximum basal diet for 56 days feeding trial. A total of sixteen(16) growing WAD rams between 6 - 9 months with an average body weight of 7.00 - 12.00k were randomly allocated to 4 treatments with 4 rams each and 2 rams per replicate. The experimental diet was fed at 3% body weight of individual ram while fresh, wilted, and dried forms of Cajanus cajan leaves supplemented at varied inclusion levels (0%, 30% fresh, 30% wilted and 30% dried) with Panicum maximum. There were significant (P<0.05) differencesin all parameters determined on nutrient digestibility across the dietary treatments. Animals maintained on T (70% Panicum maximum and 30% dried Cajanus cajan leaves) had the 4 highest dry matter digestibility (60.46%), while the lowest value (48.56%) for DMD was recorded in T diet. Rams fed T diet had the highest mean crude protein digestibility (CPD) 1 2 value of 11.30%, followed by T (10.68%), 10.02% for T , while T diet had the lowest mean 2 1 4CPD of 9.21%. Rams fed T diet had the highest mean crude fibre digestibility (CFD) value of 1 37.65%, while 35.03, 33.18 and 32.71 were recorded for T , T and T diet respectively. T was 4 2 3 4 observed to have the highest mean ash digestibility value of 17.07% with T , T and T having 3 1 2 the value of 16.02, 14.28 and 13.36 respectively. There were significant (P<0.05) differences in all parameters determined on nitrogen utilization across the dietary treatments. Rammaintained on T diet had the highest mean intake of 4.42g/d while T diet had the lowest 2 1 mean value of 2.64g/d. The lowest mean nitrogen balance (NB) of 0.43g/d was observed in rams fed T diet while rams on T diet had the highest NB value of 2.18g/d. Rams fed T diet 1 2 4 had the highest faecal nitrogen value of 2.14g/d. However, rams maintained on T diet had 4 the highest value urinary nitrogen of 1.07g/d. The nitrogen utilization fluctuatedsignificantly (P<0.05) across the dietary treatments. It can be concluded that supplementation of fresh Cajanus cajan forages at 30% inclusion with Panicum maximum at 70% for growing rams can enhance nutrient utilization in terms of crude protein digestibility and nitrogen utilization without any deleterious effects on the animals.

scholarly journals Performance of Growing Lambs as Influenced by Liquid Acid Whey Supplementation

2013 ◽  
pp. 61-73
Author(s):  
Angie Poliquit ◽  
Serena Sanchez
Keyword(s):  
Organic Matter ◽  
Weight Gain ◽  
Crude Protein ◽  
Dry Matter ◽  
Nutrient Digestibility ◽  
Napier Grass ◽  
Dry Matter Intake ◽  
Liquid Acid ◽  
Ruminal Ph ◽  
Acid Whey

Twelve male growing lambs were used in a randomized complete block design to determine the effects of feeding liquid acid whey (LAW) on the performance of the animal, its dry matter intake, nutrient digestibility, weight gain and ruminal pH. Animals received a diet consisting of Napier grass (Pennisetum purpureum, Schumacher). Treatments were Napier grass plus concentrate, Napier grass plus LAW and Napier grass plus concentrate plus LAW. Individual dry matter intake (DMI), biweekly weight gain (WG) and ruminal pH were measured. Diet digestibility was determined using the total collection method. Results showed that LAW increased (p<0.05) WG and diet digestibility (dry matter, organic matter and crude protein). Liquid acid whey had an average digestibility of 54.41% for dry matter, 83.94% for organic matter and 87.56% for crude protein. Ruminal pH two hours after feeding was stable for animals with LAW alone. However, DMI was similar (p>0.05) among treatments. It can be concluded that including LAW in the diet significantly improved WG, diet digestibility and ruminal pH without affecting DMI.

PSX-A-12 Late-Breaking: Effects of Renergy™ on ruminal fermentation in steers fed a high-grain diet

2021 ◽  
Vol 99 (Supplement_3) ◽  
pp. 375-375
Author(s):  
Jeff S Heldt ◽  
Harrison Hallmark ◽  
Huey Yi Loh ◽  
Sara Crane ◽  
Briana V Tangredi ◽  
...  
Keyword(s):  
Beef Cattle ◽  
Rumen Fluid ◽  
Lactate Production ◽  
Experimental Unit ◽  
Adaptation Period ◽  
Ruminal Fermentation ◽  
Acetate Production ◽  
Ruminal Ph ◽  
Post Feeding ◽  
Dietary Treatments

Abstract Renergy™ is a proprietary blend of organic acids with a proposed mode of action of increasing ruminal propionate production. Little is known about the efficacy of Renergy™ supplementation in modifying ruminal fermentation in beef cattle consuming high-grain diets. Therefore, eight Angus steers (BW 531.7 ± 20.4 kg) fitted with ruminal cannulae were used to determine the effects of Renergy™ on ruminal fermentation characteristics. Steers were fed a high concentrate diet (DM basis: 13.6% CP, 1.38 Mcal/kg NEg, and 2.02 Mcal/kg NEm) with no monensin sodium or tylosin phosphate added to the diet for 30 d prior to the initiation of the experiment. Treatments consisted of control (CON; no supplemental Renergy™) and Renergy (REN) fed at 27.6 g.animal-1.d-1 (n = 4 steers/treatment; experimental unit = animal). Following the 30 d diet adaptation period, dietary treatments were initiated for 28-d. On day 28, rumen fluid was collected at 3 h post feeding and analyzed for VFA, pH, and NH3. Ruminal pH (P = 0.62) and NH3 (P = 0.56) were unaffected by treatment. However, total VFA (P = 0.05) and propionate (P = 0.03) production were increased by Renergy, 13.3% and 25.7% respectively. There was a tendency (P = 0.14) for acetate production to be increased 10.9% in steers supplemented with Renergy™. Butyrate was unaffected (P = 0.51) by treatment. However, isobutyrate production was lower (P &lt; 0.01) in steers receiving Renergy™. Feeding Renergy™ also resulted in 25% less (P = 0.07) L-lactate production. Under conditions of this experiment, results indicate that supplementing Renergy™ for 28d to beef cattle consuming high concentrate diets impacts ruminal fermentation 3 h post feeding.

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