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https://www.readbyqxmd.com/read/28728386/the-relationship-between-odd-and-branched-chain-fatty-acids-and-microbial-nucleic-acid-bases-in-rumen
#1
Keyuan Liu, Xiaoyan Hao, Yang Li, Guobin Luo, Yonggen Zhang, Hangshu Xin
Objective: This study aims to identify the relationship between odd- and branched-chain fatty acids (OBCFAs) and microbial nucleic acid base in the rumen, and to establish a model to accurately predict microbial protein flow by using OBCFA. Methods: To develop the regression equations, data on the rumen contents of individual cows was obtained from 2 feeding experiments. In the first experiment, 3 rumen-fistulated dry dairy cows arranged in a 3×3 Latin square were fed diets of differing forage to concentration ratios (F:C)...
June 26, 2017: Asian-Australasian Journal of Animal Sciences
https://www.readbyqxmd.com/read/28728377/post-prandial-decrease-in-plasma-growth-hormone-levels-is-not-related-to-the-increase-in-plasma-insulin-levels-in-goats
#2
Koki Nishihara, Ryoko Kobayashi, Yutaka Suzuki, Katsuyoshi Sato, Kazuo Katoh, Sang-Gun Roh
Objective: In the present study, we examined whether the post-prandial reduction in plasma growth hormone (GH) levels is related to the increase in plasma insulin levels in ruminants. Methods: We performed two experiments: intravenous bolus injection of insulin (0.2 IU/kg body weight) or glucose (1.0 mmol/kg body weight) was administered to increase the plasma insulin levels in male Shiba goats. Results: In the insulin injection experiment, significant (p<0...
June 26, 2017: Asian-Australasian Journal of Animal Sciences
https://www.readbyqxmd.com/read/28728373/substituting-oat-hay-or-maize-silage-for-portion-of-alfalfa-hay-affects-growth-performance-ruminal-fermentation-and-nutrient-digestibility-of-weaned-calves
#3
Yang Zou, XinPing Zou, XiZhi Li, Gang Guo, Peng Ji, Yan Wang, ShengLi Li, YaJing Wang, ZhiJun Cao
Objective: The impact of forage feeding strategy on growth performance, ruminal fermentation and nutrient digestibility in post-weaning calves was investigated. Methods: Forty-five female Holstein calves (BW = 79.79±0.38 kg) were enrolled in the 35-d study at one week after weaning and randomly assigned to one of three dietary treatments. All diets were fed as total mixed ration containing 60% (DM basis) of basal starter feed and 40% (DM basis) of forage, but varied in composition of forage source including 1) alfalfa (40% DM, AH); 2) alfalfa hay (26...
June 27, 2017: Asian-Australasian Journal of Animal Sciences
https://www.readbyqxmd.com/read/28728361/influence-of-barley-grain-treated-with-alkaline-compounds-or-organic-extracts-on-ex-vivo-site-and-extent-of-digestion-of-starch
#4
Reza Naseroleslami, Mohsen Danesh Mesgaran, Abdolmansour Tahmasbi, Alireza Vakili, Seyed Hadi Ebrahimi
Objective: Two ex vivo experiments were conducted to verify the effect of barley grain (Nusrat cultivar) treated with alkaline compounds (AC) including alum, ammonium, and sodium hydroxide or cation-exchanged organic extracts (OE) prepared from alfalfa hay, sugar beet pulp and Ulva Fasciata, on extent and digestion site of starch. Methods: In the first study, the in vitro first order disappearance kinetic parameters of dry matter (DM), crude protein (CP) and starch were estimated using a non-linear model (D(t)= D(i)...
June 27, 2017: Asian-Australasian Journal of Animal Sciences
https://www.readbyqxmd.com/read/28727516/serological-survey-for-west-nile-virus-in-wild-artiodactyls-southern-moravia-czech-republic
#5
Zdenek Hubálek, Zina Juricová, Petra Straková, Hana Blazejová, Lenka Betásová, Ivo Rudolf
Antibodies to West Nile virus (WNV) were examined by plaque-reduction neutralization test in the blood sera of 1023 wild artiodactyls: 105 roe deer (Capreolus capreolus), 148 red deer (Cervus elaphus), 287 fallow deer (Dama dama), 71 mouflons (Ovis musimon), and 412 wild boars (Sus scrofa), sampled in South Moravian district of Breclav (Czech Republic) in the years 1990-2008. Neutralizing antibodies were detected in 5.9% of wild ruminants (4.8% roe deer, 4.1% red deer, 6.3% fallow deer, 9.9% mouflons) and 4...
July 20, 2017: Vector Borne and Zoonotic Diseases
https://www.readbyqxmd.com/read/28727216/digestibility-of-common-reed-pharagmites-communis-trin-silage-as-ruminant-feed-and-effects-of-inclusion-levels-in-the-diet-of-breeding-cows-on-feed-intake-ruminal-fermentation-and-blood-metabolites
#6
Keigo Asano, Takahiro Ishikawa, Motohiko Ishida
To examine the digestibility of common reed (Pharagmites communis Trin.) silage and effects of inclusion levels in the diet of breeding cows on nutrient intakes, ruminal fermentation and nutrient status, two digestion trials using four sheep and cows, respectively, at the maintenance stage were conducted. In the trial using sheep, common reed silage contained 20% crude protein (CP) and 50% total digestible nutrients (TDN) on a dry matter basis. In the trial using cows, treatments were the control (92.4% Sudangrass hay and 7...
July 20, 2017: Animal Science Journal, Nihon Chikusan Gakkaihō
https://www.readbyqxmd.com/read/28727105/analysis-of-the-gut-bacterial-communities-in-beef-cattle-and-their-association-with-feed-intake-growth-and-efficiency
#7
P R Myer, H C Freetly, J E Wells, T P L Smith, L A Kuehn
The impetus behind the global food security challenge is direct, with the necessity to feed almost 10 billion people by 2050. Developing a food-secure world, where people have access to a safe and sustainable food supply, is the principal goal of this challenge. To achieve this end, beef production enterprises must develop methods to produce more pounds of animal protein with less. Selection for feed-efficient beef cattle using genetic improvement technologies has helped to understand and improve the stayability and longevity of such traits within the herd...
July 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28727093/effects-of-intravenous-lipopolysaccharide-administration-on-feed-intake-ruminal-forage-degradability-and-liquid-parameters-and-physiological-responses-in-beef-cattle
#8
K D Lippolis, R F Cooke, K M Schubach, R S Marques, D W Bohnert
This experiment compared DMI, ruminal forage degradability, and liquid parameters as well as physiological responses in beef cattle receiving a lipopolysaccharide (LPS) challenge or not. Eight ruminally cannulated Angus × Hereford steers (485 ± 16 kg BW) were housed in individual pens on d -7, ranked by BW, and allocated to 1 of 2 treatments administered on d 0: 1) an intravenous (i.v.) bolus dose (0.5 μg/kg of BW, diluted in 5 mL of 0.9% sterile saline) of bacterial LPS ( 0111:B4) or 2) a 5-mL i.v. injection of 0...
July 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28727092/effects-of-dried-distiller-s-grains-and-lasalocid-inclusion-on-feedlot-lamb-growth-carcass-traits-nutrient-digestibility-ruminal-fluid-volatile-fatty-acid-concentrations-and-ruminal-hydrogen-sulfide-concentration
#9
A R Crane, R R Redden, K C Swanson, B M Howard, T J Frick, K R Maddock-Carlin, C S Schauer
Our hypothesis was that increasing the inclusion level of dried distiller's grains with solubles (DDGS) to feedlot lambs would increase growth and the inclusion of lasalocid (LAS; Bovatec, Alpharma, LLC, Bridgewater, NJ) would increase ADG and G:F, while not affecting digestibility, ruminal VFA concentration, and ruminal pH. Furthermore, we hypothesized that rations containing LAS and higher levels of DDGS would cause increased ruminal hydrogen sulfide gas (HS) concentrations. Two hundred forty crossbred (Suffolk × Rambouillet) lambs (31...
July 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28727071/feed-efficiency-phenotypes-in-lambs-involve-changes-in-ruminal-colonic-and-small-intestine-located-microbiota
#10
K Perea, K Perz, S K Olivo, A Williams, M Lachman, S L Ishaq, J Thomson, C J Yeoman
Several studies have revealed differences in rumen-located microbes between greatly efficient and inefficient animals; however, how the microbiota vary in the hind gastrointestinal tract (GIT) has only been sparsely explored and how they vary in the small intestine remains to be determined. We therefore sampled the microbiota of the duodenum, jejunum, ileum, colon, and colorectally-obtained feces, in addition to the rumen of 12 lambs that, in a residual feed intake trial, were found to be at either extreme of feed efficiency phenotypes...
June 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28727067/compositional-mixed-modeling-of-methane-emissions-and-ruminal-volatile-fatty-acids-from-individual-cattle-and-multiple-experiments
#11
J Palarea-Albaladejo, J A Rooke, I M Nevison, R J Dewhurst
The aim of the study was to investigate the association of methane (CH) yields (g/kg DMI) with rumen VFA molar proportions and animal and diet-related covariates from individual animals and multiple experiments. The dataset available consisted of 284 measurements of CH yields for beef cattle from 6 experiments measured in indirect respiration chambers. A compositional modeling approach was employed where VFA measurements were considered as a whole, instead of in isolation, emphasizing their multivariate relative scale...
June 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28727060/effect-of-monensin-inclusion-on-intake-digestion-and-ruminal-fermentation-parameters-by-bos-taurus-indicus-and-bos-taurus-taurus-steers-consuming-bermudagrass-hay
#12
N L Bell, R C Anderson, T R Callaway, M O Franco, J E Sawyer, T A Wickersham
Effects of monensin inclusion and cattle subspecies on utilization of bermudagrass hay (13.7% CP, 77.3% NDF, and 38.8% ADF) were evaluated using ruminally cannulated steers (5 [BI] and 5 [BT]; 398 kg BW). Subspecies were concurrently subjected to a 2-period, 2-treatment crossover design. Treatments were 0 (CON) or 200 mg·steer·d monensin (MON) in 0.91 kg dried distillers' grains with solubles. Periods were 70 d in length: 20 d of adaptation, 22 d of sample collection, and 28 d for withdrawal of treatment...
June 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28727058/technical-note-recording-rules-for-behavioral-studies-in-growing-heifers-fed-high-concentrate-diets
#13
A Madruga, E Mainau, L A González, M Rodríguez-Prado, J L Ruíz de la Torre, X Manteca, A Ferret
Continuous recording over 24 h is an accurate method for behavioral measurements in ruminants but is very time-consuming. The aim of this study was to compare different recording rules, in particular continuous recording (CR) with different time samplings (TS) methods, when the behavior of growing heifers housed individually and fed a high-concentrate diet is recorded. Behavior of 8 growing heifers was recorded on 6 non-consecutive days. Continuous recording over 24 h, considered the control treatment, was used to evaluate TS methods by recording all the behaviors that occurred for 60 s at intervals of 2 (S2), 5 (S5), 10 (S10), 15 (S15), 20 (S20) and 30 (S30) min...
June 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28727045/technical-note-characterization-of-lipid-constitution-in-fourier-transform-infrared-spectra-and-spectroscopic-discrimination-of-animal-derived-feedstuffs-from-different-species
#14
F Gao, L Han, Z Yang, L Xu, X Liu
The objective of the current work was to assess the capability of Fourier transform infrared (FT-IR) spectroscopy in combination with chemometric methods to discriminate animal-derived feedstuffs from different origins based on the lipid characteristics. A total of 82 lipid samples extracted from animal-derived feedstuffs, comprising porcine, poultry, bovine, ovine, and fish samples, were investigated by gas chromatography and FT-IR. The relationship between the lipid constitutions and the responding FT-IR spectral characteristics were explored...
June 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28727043/effect-of-monensin-withdrawal-on-intake-digestion-and-ruminal-fermentation-parameters-by-bos-taurus-indicus-and-bos-taurus-taurus-steers-consuming-bermudagrass-hay
#15
N L Bell, T R Callaway, R C Anderson, M O Franco, J E Sawyer, T A Wickersham
Effects of monensin withdrawal and cattle subspecies on the utilization of bermudagrass hay (14.3% CP, 72.3% NDF, and 36.9% ADF) were evaluated using ruminally cannulated steers (5 [BI] and 5 [BT]). Subspecies were concurrently subjected to a 2-period, 2-treatment crossover design. Treatments consisted of either 0 mg·steer·d-1 monensin with no previous monensin feeding (CON) or withdrawal from 200 mg·steer·d-1 monensin (MON) fed individually in 0.91 kg dried distillers' grains with solubles for 42 d. Withdrawal was evaluated for a 28-d period...
June 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28727013/changes-in-the-rumen-bacterial-microbiome-of-cattle-exposed-to-ponderosa-pine-needles
#16
K D Welch, C A Stonecipher, D R Gardner, D Cook, J A Pfister
Consumption of ponderosa pine needles, as well as needles and bark from a number of other trees, can cause abortions in cattle. The abortifacient compounds in these trees are labdane resin acids, including isocupressic acid and agathic acid. Previous research has demonstrated that cattle conditioned to pine needles metabolize the labdane resin acids more quickly than naïve cattle. The results from that study indicated that changes had occurred in the rumen of conditioned cattle. Therefore, in this study, the changes that occurred in the rumen bacterial microflora of cattle during exposure to ponderosa pine needles were evaluated...
May 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28727003/triennial-growth-and-development-symposium-intramuscular-fat-deposition-in-ruminants-and-pigs-a-transcriptomics-perspective
#17
B P Dalrymple, B Guo
The genomics era has led to an explosion in the study of gene expression in production animals. Intramuscular fat (IMF) content (both high and low) and composition are major quality attributes of meat, and more than 90 transcriptomic studies of IMF deposition have been undertaken in the ruminants and pigs since 2001, with the majority since 2008. The studies have implicated many genes involved in the control of adipogenesis, lipogenesis, and deposition of IMF, but there is relatively little consistency between the different studies...
May 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28726998/potential-for-improving-fiber-digestion-in-the-rumen-of-cattle-bos-taurus-through-microbial-inoculation-from-bison-bison-bison-in-situ-fiber-degradation
#18
C Griffith, G O Ribeiro, M Oba, T A McAllister, K A Beauchemin
The objective of this experiment was to determine if partial replacement of cattle rumen contents with those from bison would increase in situ ruminal fiber degradation of various forages. The second objective was to examine individual variation among cattle in their ability to degrade forage and their responses to inoculation. In situ degradation of barley straw, canola straw, alfalfa hay, and timothy hay was measured in 16 ruminally cannulated heifers fed a barley straw-based diet before and after inoculation with combined rumen contents from 32 bison (performed twice, 14 d apart)...
May 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28726994/cell-biology-symposium-practical-application-of-the-basic-aspects-of-glut4-membrane-trafficking-and-insulin-signaling-on-issues-related-to-animal-agriculture
#19
S B Smith
Because of the relatively short lifespans of beef cattle, membrane trafficking in relation to inflammation is not considered important unless it overtly affects productivity. However, glucose uptake and utilization is important for adipose tissue development in beef cattle, and increasing glucose utilization in intramuscular adipose tissue can increase carcass quality. Research from the 1980s demonstrated a lack of insulin sensitivity in isolated bovine adipocytes and adipose tissue explants incubated in vitro...
May 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28726991/high-sulfate-water-consumption-determines-intake-and-metabolic-responses-to-protein-supplementation-in-lambs-consuming-low-quality-forage
#20
A López, J I Arroquy, A V Juárez Sequeira, N DiLorenzo, M C Barrionuevo, R A Distel
Twenty Hampshire lambs (31 ± 4 kg BW) in individual metabolism cages were used in a 10-treatment by 2-period ( = 4) trial to evaluate the interaction between protein supplementation and sulfate water on intake and metabolic responses when lambs were fed low-quality grass hay (; 6.4% CP, 79.5% NDF). The treatment structure was a 2 × 5 factorial: 2 water qualities (WQ; low-sulfate [LS] and high-sulfate [HS]; 442 and 8,358 mg/kg total dissolved solids, respectively) and 5 soybean meal levels (SBM; 0%, 0.25%, 0...
May 2017: Journal of Animal Science
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