DE MARCO, Michele

Gasco, Laura

Rotolo, Luca

Schiavone, Achille

English

Institutional Research Information System University of Turin

20 November 2023AperTO - Archivio Istituzionale Open Access dell'Università di TorinoOriginal Citation:Interaction between dietary ß-alanine and valine supplemented to broilers dietTerms of use:Open Access(Article begins on next page)Anyone can freely access the full text of works made available as "Open Access". Works made availableunder a Creative Commons license can be used according to the terms and conditions of said license. Useof all other works requires consent of the right holder (author or publisher) if not exempted from copyrightprotection by the applicable law.Availability:This is the author's manuscriptThis version is available http://hdl.handle.net/2318/152562 sinceInteraction between dietary ß-alanine and valine supplemented to broilers diet An Cools, Geert P.J. Janssens, Camille De Moor, Angelo Lauwaerts, Mia Laget, Achille Schiavone The objective of the present study was to evaluate the interaction between dietary ß-alanine and valine supplemented to broilers diet. A total of 504 one day old female broilers (Ross 708, 37.3±0.1 g) were randomly assigned to 42 pens (12 chicks/pen). Six blocks of seven pens were made in a randomized 3×2 block design. Each block received a starter (days1-21) and finisher (days22-42) diet with one out of three valine levels (NV: 0.85%, HV: 0.89%, VHV: 0.93% digestible valine) and no (CON) or 500mg/kg ß-alanine (B-ALA). At pen level average daily feed intake (ADFI) and average daily gain (ADG) was calculated. At day 42 broilers were weighed and slaughtered. Statistical analyses (SPSS 22.0) was performed using a general linear model with valine (NV, HV, VHV) and ß-alanine (CON, B-ALA) as fixed factors and initial pen weight as covariate. During the finsher phase, ADFI tended to be higher for B-ALA (CON 131.8±5.9, B-ALA 136.0±7.6, P=0.083) and ADG tended to be lower for HV-B-ALA in comparison to the other groups (P=0.078). Chilled carcass weight of B-ALA (1520±155) was significantly higher than for CON carcasses (1492±156, P=0.036). Slaughter yield was higher for NV-B-ALA (70.8±0.1%) compared to the other groups (P=0.003). Results indicate that ß-alanine supplementation improved slaughter performance of broilers. Limited interaction with excess valine was observed, but it would be worthwhile to test the effect of ß-alanine in valine defficient diets. 

Interaction between dietary ß-alanine and valine supplemented to broilers diet

https://iris.unito.it/bitstream/2318/152562/1/Cools%20et%20al%202014%20EPC.pdf

Interaction between dietary ß-alanine and valine supplemented to broilers diet

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