Abstract
Heat stress (HS) pigs reduce their voluntary feed intake (VFI) and ingestion of indispensable amino acids (AA). Increasing the dietary crude protein (CP) content may help to correct the reduced AA intake by HS pigs, but it may further increase their body heat load. Increasing the AA intake by adding free AA to the diet does not affect the heat load of HS pigs. Two 21-d experiments were conducted. In Exp. 1, 30 pigs (31.1 ± 1.2 kg initial body weight) were used to determine the performance depression because of HS. Treatments were: thermo neutral pigs fed a 22% CP control diet (TN-C); HS pigs fed the control diet (HS-C); HS pigs fed a 14% CP, AA supplemented diet (HS-AA). HS pigs had lower ADG and Lys utilization efficiency, and consumed 20 and 25% less Lys and Thr, respectively, than the TN-C pigs (P < 0.05). In Exp. 2 (comparative slaughter), 25 pigs (33.6 ± 0.65 kg initial body weight) were used to evaluate the effect of extra dietary AA either as protein-bound or free AA on the performance and carcass traits of HS pigs. Treatments were: control wheat-SBM-free Lys, Thr and Met diet (CON); diet with 30% more CP than CON (HSxP); diet added with free AA to contain at least 25% more of each AA than the recommended level (HSxAA). ...Continue Reading
References
Jun 1, 1976·Journal of Clinical Pathology·K S Chua, I K Tan
Feb 1, 1985·The Proceedings of the Nutrition Society·D B SilkR G Rees
Dec 15, 1995·The Biochemical Journal·G Wu
Jul 24, 2001·Journal of Animal Science·A CollinJ Noblet
Aug 24, 2001·Journal of Animal Science·H H SteinR A Easter
Aug 21, 2003·Journal of Animal Science·B J KerrR A Easter
Dec 3, 2003·American Journal of Physiology. Renal Physiology·C SauvantM Gekle
Feb 14, 2009·Journal of Animal Science·F LiuJ Yu
Feb 8, 2011·Journal of Animal Science·D RenaudeauN R St-Pierre
Jul 12, 2011·Journal of Animal Science·E Kamanga-SolloW R Dayton
Jun 15, 2012·Journal of Animal Science·N Quiniou, J Noblet
Mar 7, 2013·Journal of Animal Science·S C PearceL H Baumgard
Aug 13, 2013·PloS One·Sarah C PearceNicholas K Gabler
Jan 8, 2014·Journal of Animal Physiology and Animal Nutrition·A MoralesM Cervantes
Dec 10, 2014·Nutrition & Metabolism·Dominik H Pesta, Varman T Samuel
May 29, 2015·Journal of Animal Science·A MoralesM Cervantes
Jan 27, 2016·Journal of Animal Science·A MoralesM Cervantes
Jun 7, 2016·Journal of Thermal Biology·Miguel CervantesAdriana Morales
Aug 3, 2016·Journal of Animal Science·A MoralesM Cervantes
Oct 4, 2016·Journal of Animal Science·A MoralesM Cervantes
Oct 19, 2017·Journal of Thermal Biology·Miguel CervantesAdriana Morales
Citations
Feb 18, 2020·Journal of Animal Science·Adriana MoralesMiguel Cervantes
Jan 29, 2019·Journal of Animal Science·Adriana MoralesMiguel Cervantes
Jul 27, 2020·Translational Animal Science·Adriana MoralesMiguel Cervantes
Jul 27, 2020·Translational Animal Science·Amanda J CrossGary A Rohrer
Aug 24, 2018·Journal of Animal Science·Luan Sousa Dos SantosLuciano Hauschild
Aug 24, 2021·Journal of Thermal Biology·Alípio Dos Reis TeixeiraPaulo Henrique Reis Furtado Campos
Jun 3, 2021·Journal of Animal Science·Adriana MoralesMiguel Cervantes
Sep 10, 2019··J.K. Htoo, J.K. Htoo