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https://www.readbyqxmd.com/read/28728387/effects-of-environmental-enrichment-on-behaviour-physiology-and-performance-of-pigs-a-review
#1
Mbusiseni Vusumuzi Mkwanazi, Cyprial Ndumiso Ncobela, Arnold Tapera Kanengoni, Michael Chimonyo
The aim of this paper is to critically analyse and synthesise existing knowledge concerning the use of environmental enrichment and its effect on behaviour, physiology and performance of pigs housed in intensive production systems. The objective is also to provide clarity as to what constitute successful enrichment and recommend on when and how enrichment should be used. Environmental enrichment is usually understood as an attempt to improve animal welfare and to lesser extent, performance. Common enrichment objects used are straw bedding, suspended rope and wood shavings, toys, rubber tubing, coloured plastic keys, table tennis balls, chains and strings...
June 26, 2017: Asian-Australasian Journal of Animal Sciences
https://www.readbyqxmd.com/read/28728380/effects-of-different-space-allowances-on-growth-performance-blood-profile-and-pork-quality-in-a-grow-to-finish-production-system
#2
J C Jang, X H Jin, J S Hong, Y Y Kim
Objective: This experiment was conducted to evaluate the optimal space allowance on growth performance, blood profile and pork quality of growing-finishing pigs. Methods: A total of ninety crossbred pigs ([Yorkshire x Landrace] x Duroc, 30.25 ± 1.13 kg) were allocated into three treatments (0.96: four pigs / pen, 0.96 m2/pig; 0.80: five pigs / pen, 0.80 m2/pig; 0.69: six pigs / pen, 0.69 m2/pig) in a randomized complete block (RCB) design. Pigs were housed in balanced sex and had free access to feed in all phases for 14 weeks (growing phase I, growing phase II, finishing phase I and finishing phase II)...
June 26, 2017: Asian-Australasian Journal of Animal Sciences
https://www.readbyqxmd.com/read/28728056/sequence-based-diversity-of-23-autosomal-str-loci-in-koreans-investigated-using-an-in-house-massively-parallel-sequencing-panel
#3
Eun Hye Kim, Hwan Young Lee, So Yeun Kwon, Eun Young Lee, Woo Ick Yang, Kyoung-Jin Shin
As DNA databases continue to grow and international cooperation increases, forensic STR loci have expanded to increase the discriminatory power and inter-database compatibility. Current capillary electrophoresis (CE) and/or massively parallel sequencing (MPS)-based commercial STR analysis systems reflect such changing trends of expanding STR loci. Due to the general gains of larger multiplexing and the detection of sequence variation, the application of MPS technology to STR analysis has further improved discrimination and is expected to aid in mixture interpretation by increasing the effective number of alleles...
July 9, 2017: Forensic Science International. Genetics
https://www.readbyqxmd.com/read/28727845/emergent-multisystemic-enterococcus-infection-threatens-endangered-christmas-island-reptile-populations
#4
Karrie Rose, Jessica Agius, Jane Hall, Paul Thompson, John-Sebastian Eden, Mukesh Srivastava, Brendan Tiernan, Cheryl Jenkins, David Phalen
Multisystemic infections with a morphologically unusual bacterium were first observed in captive critically endangered Lister's geckos (Lepidodactylus listeri) on Christmas Island in October 2014. Since then the infection was identified in another captive critically endangered lizard species, the blue-tailed skink (Cryptoblepharus egeriae) and two species of invasive geckos; the four clawed gecko (Gehyra mutilata) and Asian house gecko (Hemidactylus frenatus), in a wide geographic range across the east side of the island...
2017: PloS One
https://www.readbyqxmd.com/read/28727808/automatic-mouse-ultrasound-detector-a-mud-a-new-tool-for-processing-rodent-vocalizations
#5
Sarah M Zala, Doris Reitschmidt, Anton Noll, Peter Balazs, Dustin J Penn
House mice (Mus musculus) emit complex ultrasonic vocalizations (USVs) during social and sexual interactions, which have features similar to bird song (i.e., they are composed of several different types of syllables, uttered in succession over time to form a pattern of sequences). Manually processing complex vocalization data is time-consuming and potentially subjective, and therefore, we developed an algorithm that automatically detects mouse ultrasonic vocalizations (Automatic Mouse Ultrasound Detector or A-MUD)...
2017: PloS One
https://www.readbyqxmd.com/read/28727726/a-cross-sectional-seroepidemiological-survey-of-typhoid-fever-in-fiji
#6
Conall H Watson, Stephen Baker, Colleen L Lau, Kitione Rawalai, Mere Taufa, Jerimaia Coriakula, Nga Tran Vu Thieu, Tan Trinh Van, Dung Tran Thi Ngoc, Niel Hens, John Lowry, Ruklanthi de Alwis, Jorge Cano, Kylie Jenkins, E Kim Mulholland, Eric J Nilles, Mike Kama, W John Edmunds
Fiji, an upper-middle income state in the Pacific Ocean, has experienced an increase in confirmed case notifications of enteric fever caused by Salmonella enterica serovar Typhi (S. Typhi). To characterize the epidemiology of typhoid exposure, we conducted a cross-sectional sero-epidemiological survey measuring IgG against the Vi antigen of S. Typhi to estimate the effect of age, ethnicity, and other variables on seroprevalence. Epidemiologically relevant cut-off titres were established using a mixed model analysis of data from recovering culture-confirmed typhoid cases...
July 20, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28727709/transforaminal-percutaneous-endoscopic-discectomy-and-foraminoplasty-after-lumbar-spinal-fusion-surgery
#7
Jian-Jun Wu, Hui-Zhen Chen, Changkun Zheng
BACKGROUND: The most common causes of pain following lumbar spinal fusions are residual herniation, or foraminal fibrosis and foraminal stenosis that is ignored, untreated, or undertreated. The original surgeon may advise his patient that nothing more can be done in his opinion that the nerve was visually decompressed by the original surgery. Post-operative imaging or electrophysiological assessment may be inadequate to explain all the reasons for residual or recurrent symptoms. Treatment of failed lumbar spinal fusions by repeat traditional open revision surgery usually incorporates more extensive decompression causing increased instability and back pain...
July 2017: Pain Physician
https://www.readbyqxmd.com/read/28727284/technical-note-using-k-means-clustering-to-determine-the-number-and-position-of-isocenters-in-mlc-based-multiple-target-intracranial-radiosurgery
#8
Adam D Yock, Gwe-Ya Kim
PURPOSE: To present the k-means clustering algorithm as a tool to address treatment planning considerations characteristic of stereotactic radiosurgery using a single isocenter for multiple targets. METHODS: For 30 patients treated with stereotactic radiosurgery for multiple brain metastases, the geometric centroids and radii of each met were determined from the treatment planning system. In-house software used this as well as weighted and unweighted versions of the k-means clustering algorithm to group the targets to be treated with a single isocenter, and to position each isocenter...
July 20, 2017: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/28727124/similar-effects-of-lysine-deficiency-in-muscle-biochemical-characteristics-of-fatty-and-lean-piglets
#9
P Palma-Granados, A Haro, I Seiquer, L Lara, J F Aguilera, R Nieto
The main objective of this work was to investigate the effects of feeding Lys-deficient diets on muscle biochemical characteristics, particularly intramuscular fat concentration and fatty acid profile, in a fatty (Iberian) and a conventional pig genotype (Landrace × Large White [LDW]) maintained in identical experimental conditions. Performance and plasma metabolite changes were also monitored. Twenty-eight barrows of 10 kg initial BW, 14 of Iberian and 14 of LDW breed, were randomly assigned to each of 2 experimental diets in a 2 × 2 factorial arrangement (2 breeds × 2 diets)...
July 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28727119/nitrogen-from-ammonia-is-as-efficient-as-that-from-free-amino-acids-or-protein-for-improving-growth-performance-of-pigs-fed-diets-deficient-in-nonessential-amino-acid-nitrogen
#10
W D Mansilla, J K Htoo, C F M de Lange
Inclusion of NPN in diets may compensate the deficient supply of nonessential AA (NEAA) in very low CP levels. To assess this, 2 studies were conducted to determine the effect of supplementing NPN and specific NEAA to diets severely deficient in NEAA nitrogen (NEAA-N) on growth performance of pigs. In Exp. 1, 48 gilts (initial BW 15.2 ± 1.3 kg; 2 pigs per pen; 6 pens per treatment) were randomly assigned to 1 of the 4 dietary treatments: 1) positive control (Pos Ctrl), not deficient in essential AA (EAA) and total N, with all N supplied from intact protein (casein and soybean meal) or crystalline EAA, (2) negative control (Neg Ctrl), supplying the same amount of potentially limiting EAA as Pos Ctrl but deficient in NEAA-N, 3) Neg Ctrl plus 1...
July 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28727118/technical-note-assessment-of-an-alternative-technique-for-measuring-body-temperature-in-pigs
#11
A Petry, W McGilvray, A R Rakhshandeh, A Rakhshandeh
Core body temperature (CBT) is one of the main vital signs that is used to evaluate the health status of pigs. The most common and feasible method for assessing CBT in pigs is rectal temperature (RT). Obtaining RT is stressful for animals, may generate inaccurate results, and has the risk of spreading disease. Infrared imaging (IR) thermography of the body of pigs may be a safer and less stressful alternative to RT. The objective of the current study was to evaluate the efficacy of using IR as an alternative for monitoring CBT in pigs...
July 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28727108/development-of-a-salmonella-typhimurium-challenge-model-in-weaned-pigs-to-evaluate-effects-of-water-and-feed-interventions-on-fecal-shedding-and-growth-performance
#12
P J van der Wolf, J G M Wientjes, A E Heuvelink, A M B Veldhuis, H M J van Hees, P J Roubos-van den Hil
The aim of this study was to develop a Typhimurium (ST) challenge model in weaned pigs suitable to evaluate effects of water and feed interventions on fecal shedding and growth performance. Two studies were performed. In Exp. 1 weaned pigs were fed either a standard diet (CON) or a diet with a high buffer capacity (HB) and challenged for either 3 or 7 consecutive days in a Latin square design with 4 × 8 individually housed pigs. In Exp. 2, the CON 7-d challenge method was chosen for further model development and validation...
July 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28727102/effects-of-lipid-form-and-source-on-digestibility-of-fat-and-fatty-acids-in-growing-pigs
#13
Z C Li, Y B Su, X H Bi, Q Y Wang, J Wang, J B Zhao, L Liu, F L Wang, D F Li, C H Lai
The objective of this study was to compare the effect of source (corn DDGS, rice bran, or soybean) or form of oil (extracted or intact) on apparent total tract digestibility (ATTD) and true total tract digestibility (TTTD) of acid-hydrolyzed ether extract (AEE) and fatty acids. The study determined and compared the ATTD or TTTD of AEE and fatty acids in extracted corn oil, rice oil, and soybean oil with intact oil in corn DDGS, full-fat rice bran, and full-fat soybean. Seventy-eight barrows (initial BW = 47...
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
#14
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/28727091/endogenous-fat-loss-and-true-total-tract-digestibility-of-poultry-fat-in-adult-dogs
#15
F R Marx, L Trevizan, F M O B Saad, K G Lisenko, J S Reis, A M Kessler
Fat plays an important role in the carnivore diet. It has high digestibility and high energy content and likely improves digestibility of the diet when present in greater amounts, suggesting that endogenous fat adversely affects the apparent digestibility of fat in low-fat diets. This study aimed to determine the endogenous fat loss (EFL) and true total tract digestibility (TTTD) of fat in dogs by using diets having different fat:carbohydrate ratios. Furthermore, the apparent total tract digestibility (ATTD) of macronutrients and energy, food intake, fecal output, and stool quality were evaluated...
July 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28727090/effect-of-natural-betaine-and-ractopamine-hcl-on-whole-body-and-carcass-growth-in-pigs-housed-under-high-ambient-temperatures
#16
S M Mendoza, R D Boyd, C E Zier-Rush, P R Ferket, K D Haydon, E van Heugten
Betaine is an osmolyte that helps to maintain water homeostasis and cell integrity, which is essential during heat stress. We hypothesized that supplemental betaine can improve growth during heat stress and may further improve the response to ractopamine. Two studies were conducted to determine: 1) the effects of betaine in combination with ractopamine; and 2) the optimum betaine level for late finishing pigs during heat stress. Heat stress was imposed by gradually increasing temperatures over 10 d to the target high temperature of 32°C...
July 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28727078/flaxseed-meal-and-oat-hulls-supplementation-modulates-growth-performance-blood-lipids-intestinal-fermentation-bile-acids-and-neutral-sterols-in-growing-pigs-fed-corn-soybean-meal-based-diets
#17
S P Ndou, E Kiarie, S J Thandapilly, M C Walsh, N Ames, C M Nyachoti
The present study was conducted to determine the effect of flaxseed meal and oat hulls supplementation on growth performance, apparent total tract digestibility (ATTD) of fat, serum lipids, and concentrations of VFA, bile acids (BA), and neutral sterols (NS) in digesta and feces in growing pigs. Forty-eight Genesus [(Duroc boar × Yorkshire-Landrace sows] barrows (25.0 ± 0.32 kg initial BW) were housed in pairs. Pigs were assigned to 1 of the 3 corn-soybean meal-based diets-a basal corn-soybean meal-containing diet (control), a flaxseed meal-containing diet (FM), or an oat hulls-containing diet (OH)-in a completely randomized design...
July 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28727076/effect-of-post-ethanol-extraction-sorghum-silage-as-a-forage-source-in-growing-and-finishing-diets-on-steer-performance-carcass-characteristics-and-nutrient-digestibility
#18
C P Blank, D D Loy, S L Hansen
Two experiments evaluated the use of post-ethanol extraction sorghum silage as an alternative forage source in feedlot diets. Seventy-two crossbred steers (397 kg [SD 23]) were used to evaluate growth and carcass characteristics. Steers were blocked by BW into pens of 6 steers and randomly assigned to growing diets containing 40% (DM basis) sorghum silage (SS; 57.6% NDF) or grass hay (CON; 63.3% NDF) for 56 d ( = 6 pens per treatment). Within each treatment, steers transitioned to dry-rolled corn-based finishing diets (fed for 56 d) containing 6% effective NDF contributed by the forage source, resulting in forage inclusions of 16% for SS and 13...
July 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28727068/the-effects-of-molybdenum-water-concentration-on-feedlot-performance-tissue-mineral-concentrations-and-carcass-quality-of-feedlot-steers
#19
M J Kistner, J J Wagner, J Evans, S Chalberg, S Jalali, K Sellins, M L Kesel, T Holt, T E Engle
Thirty cross-bred steers (initial BW 452.0 ± 12.1 kg) were used to investigate the effects of Mo water concentration on performance, carcass characteristics, and mineral status of feedlot steers. The experimental design was a randomized complete block design. Steers were blocked by weight and then divided into 2 weight blocks each consisting of 15 steers. Steers were randomly assigned within block to one of 5 treatments (3 steers/treatment per block). Water treatments consisted of: 1) 0.0 µg/L, 2) 160 µg/L, 3) 320 µg/L, 4) 480 µg/L, and 5) 960 µg/L of supplemental Mo added as Na2MoO4 to the drinking water...
June 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28727061/behavior-of-immunologically-castrated-barrows-in-comparison-to-gilts-physically-castrated-barrows-and-intact-male-pigs
#20
C L Puls, A Rojo, P D Matzat, A L Schroeder, M Ellis
The behavior of immunologically castrated barrows (IC; with Improvest; Zoetis, Parsippany, NJ) was compared with that of intact males (IM), physically castrated barrows (PC), and gilts (G). The study used 160 commercial crossbred pigs in a randomized complete block design (blocking factor was start date of study) and was performed over an 8-wk period from 16 wk of age (67.2 ± 2.50 kg BW) to a final BW of 126.5 ± 6.05 kg. The first Improvest dose was given to IC at the start of the study (d 0), and the second dose was given 28 d later...
June 2017: Journal of Animal Science
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