Writtle University College Repository

Jowett, Sarah L.

Barker, Zoe Elizabeth

Amory, Jonathan R.

Preferential associations in an unstable social network: applying social network analysis to a dynamic sow herd

van den Akker, Olmo R.

Peters, Gjalt-Jorn Ygram

Bakker, Caitlin J.

Carlsson, Rickard

Coles, Nicholas A.

Corker, Katherine S.

Feldman, Gilad

Moreau, David

Nordström, Thomas

Pickering, Jade S.

Riegelman, Amy

Topor, Marta K.

van Veggel, Nieky

Yeung, Siu Kit

Call, Mark

Mellor, David T.

Pfeiffer, Nicole

Increasing the transparency of systematic reviews: presenting a generalized registration form

McAteer, Aidan

Gill, Robin

Ferro de Godoy, Roberta

Impact of Forage Presentation on the Equine Brachiocephalicus Mechanical Nociceptive Threshold (MNT) and Forelimb Kinematics

Hands, R.

Sargeant, E.

VanVeggel, N.

Amory, J.

Neto, R.

Chikunya, S.

108Effects of replacing zinc oxide with a combination of b-glucan, Bacillus subtilis PB6 and formic acid on the performance of weaner pigsR. Hands a,, E. Sargeant a, N. Van Veggel a, J. Amory a, R. Neto b, S. Chikunya aaWrittle University College, Chelmsford, United KingdombKemin, Herentals, BelgiumPresenting author.Rebecca Hands. E-mail: 98368638@writtle.ac.ukApplicationThe combination of the b-1,3-glucan type immunomodulator and a probiotic (Bacillus sp. PB6) and formic acid appears to be an effectivereplacement for ZnO in diets of weaner piglets.Introductioninc oxide (ZnO) has been used at high doses in diets of pigs to reduce incidence and severity of post-weaning diarrhoea. In June 2022, theuse of supra-nutritional levels of ZnO in pig diets was banned due to environmental pollution concerns. This study evaluated the efficacy ofusing a combination of additives, a b-1,3 -glucan, a Bacillus sp. PB6 and an encapsulated calcium formic and citric acid to replace ZnO inweaned piglets.Materials and methodsWeaner piglets (380) were balanced for sex and weight then randomly allocated to two diets. The control group were offered a standardcommercial pre-starter diet with ZnO (2500 ppm) on days 28-42, followed by a ZnO free starter diet on days 43-70. The treatment group,received a ZnO free pre-starter diet, with b-1,3 -glucan (AletaTM) (200 g/ton) + Bacillus sp. PB6 (CLOSTATR) (1000 g/ton) + encapsulated for-mic acid (FormylTM) (2 kg/ton) on days 28-42, followed by a starter diet with b-1,3 -glucan (200 g/ton) + Bacillus sp. PB6 (500 g/ton) on days43-70. The trial was run in batches over three periods. In each run, 3 pens were allocated to each diet, replicated over 3 periods giving atotal 9 pens per treatment. Body weights, piglet mortalities, faecal parameters (consistency scores, pH, dry matter) were measured. Datawere analysed with One-Way ANOVA with batch used as block, using Genstat.ResultsPostweaning piglet mortalities were low and similar on the two diets. Faecal parameters such as DM, consistency scores and pH were alsosimilar. The additives used to replace ZnO resulted in similar liveweights and average daily gains (ADG) from days 28-42. At day 70, pigs onthe ZnO free diet were heavier (29.8 kg) compared to those on standard diet (28.9 kg) (sed = 0.405, P = 0.029). ADG (g/day) for days 28-70,42-70 and 56-70 were consistently higher in pigs on the ZnO free diet, than on the standard diet; with average values of 512 vs 490 (sed =7.30, P = 0.003), 608 vs 560 (sed = 9.69, P < 0.001) and 678 vs 636 (sed = 14.89, P = 0.006), respectively.ConclusionsThe combination of additives used elicited comparable levels of performance in weaner pigs and in some cases exceeded the traditionalZnO based diet. The improvements in performance on the ZnO free diet translated into pigs that were approximately 1 kg heavier atday 70.AcknowledgmentsKemin for the funding. ForFarmers UK Ltd for formulating diets.doi: 10.1016/j.anscip.2023.01.485109A description of ear-directed and other damaging behaviour and ear lesions in weaned pigsL. Markland a,b,, K. O’Driscoll a, F. Leonard b, L. Boyle aa Teagasc, Fermoy, IrelandbUniversity College of Dublin, Dublin, IrelandPresenting author.Lucy Markland. E-mail: Lucy.Markland@teagasc.ieApplicationIncrease the understanding of the etiology and risk factors of ear necrosis to improve pig health and welfare.Animal - Science Proceedings 14 (2023) 283–430365

Effects of replacing zinc oxide with a combination of β-glucan, Bacillus subtilis PB6 and formic acid on the performance of weaner pigs

Blake, Scott

Wills, Alison

Tabor, Gillian

Kinetics analysis of effects of different angles of box during turning in flyball dog

Teixeira, Antonio

Blake, Roberta

Laminitis

Melfi, Vicky A.

Tabor, Gillian F.

Wills, Alison P.

Injury Risk Factors Associated With Training and Competition in Flyball Dogs

Coll, Judit Aulinas

Surface electromyography (sEMG) of equine core muscles and kinematics of lumbo-sacral joint during core strengthening exercises

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