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Increased dietary soybean meal does not affect performance during a PRRSV-Mycoplasma hyopneumoniae challenge

Porcine reproductive and respiratory syndrome virus (PRRSV) and Mycoplasma hyopneumoniae (MHP) are 2 significant respiratory pathogens in finishing pigs, often found in tandem. Recent anecdotes have implied that increasing soybean meal content of diets can be beneficial in pathogen-challenged pigs,... Full description

Journal Title: Journal of Animal Science Apr 2016, Vol.94, p.192
Main Author: O'Connell, A
Other Authors: Schweer, W , Schwartz, K , Gourley, G , Fitzsimmons, M , Gabler, N
Format: Electronic Article Electronic Article
Language: English
Subjects:
ID: ISSN: 00218812 ; E-ISSN: 15253163 ; DOI: 10.2527/msasas2016-411
Link: http://search.proquest.com/docview/2036979448/?pq-origsite=primo
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title: Increased dietary soybean meal does not affect performance during a PRRSV-Mycoplasma hyopneumoniae challenge
format: Article
creator:
  • O'Connell, A
  • Schweer, W
  • Schwartz, K
  • Gourley, G
  • Fitzsimmons, M
  • Gabler, N
subjects:
  • Mycoplasma Hyopneumoniae
  • Soybeans
  • Diet
  • Viruses
  • Pathogens
  • Hogs
  • Animal Diseases
  • Diet
  • Muscles
  • Inoculation
  • Viruses
  • Diet
  • Inoculation
  • Swine
  • Pathogens
  • Proteins
  • Respiratory Diseases
  • Viruses
  • Soybeans
  • Feed Efficiency
  • Pathogens
  • Diet
  • Pathogens
  • Lungs
ispartof: Journal of Animal Science, Apr 2016, Vol.94, p.192
description: Porcine reproductive and respiratory syndrome virus (PRRSV) and Mycoplasma hyopneumoniae (MHP) are 2 significant respiratory pathogens in finishing pigs, often found in tandem. Recent anecdotes have implied that increasing soybean meal content of diets can be beneficial in pathogen-challenged pigs, while other reports suggest similar benefits by increasing the use of synthetic AA, specifically Trp. The objective of this study was to determine if increased synthetic Trp replacing a portion of SBM would impact performance of late finishing pigs dual-challenged with PRRSV and MHP. Ninety-six mixed sex pigs (120 ± 1.4 kg BW), were selected and randomly assigned to a high SBM (CON; 9 pens/trt) or synthetic Trp (SYN; 9 pens/trt) diet. Both diets were formulated to contain 0.70% TID Lys and were isocaloric; only crude protein was different between CON and SYN diets (15.9 vs. 13.5%, respectively). After 96 d on test diets, all pigs were inoculated intratracheally with MHP and intramuscularly with a field strain of PRRSV. Growth performance and feed efficiency were determined until pigs reached market weight (~138 kg BW), after which, carcass data and lung lesion scores were assessed. During the 96 d pre-challenge period, no performance differences were detected between the 2 dietary treatments. As expected, antibody titers for PRRSV and MHP increased post inoculation. However, change in PRRSV antibody titers from 0 to 28 d post inoculation tended (P = 0.09) to be increased in SYN verses CON pigs. MHP antibody titers and lung lesion scores did not differ between treatments. For the 28 d post-challenge period, there was no difference in ADG, ADFI or G:F. There was also no difference in hot carcass weight, yield percentage or muscle depth (P > 0.10). However, the SYN pigs had an increase in carcass fat depth compared to the CON (P = 0.01). Conversely, there was a tendency (P = 0.09) for carcass lean percent to be increased in CON pigs (57.6 vs. 57.1%, respectively). Altogether, these data indicate that diets with increased synthetic AA or decreased SBM do not alter pig performance during a late breaking respiratory health challenge.
language: eng
source:
identifier: ISSN: 00218812 ; E-ISSN: 15253163 ; DOI: 10.2527/msasas2016-411
fulltext: fulltext
issn:
  • 00218812
  • 0021-8812
  • 15253163
  • 1525-3163
url: Link


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titleIncreased dietary soybean meal does not affect performance during a PRRSV-Mycoplasma hyopneumoniae challenge
creatorO'Connell, A ; Schweer, W ; Schwartz, K ; Gourley, G ; Fitzsimmons, M ; Gabler, N
ispartofJournal of Animal Science, Apr 2016, Vol.94, p.192
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subjectMycoplasma Hyopneumoniae ; Soybeans ; Diet ; Viruses ; Pathogens ; Hogs ; Animal Diseases ; Diet ; Muscles ; Inoculation ; Viruses ; Diet ; Inoculation ; Swine ; Pathogens ; Proteins ; Respiratory Diseases ; Viruses ; Soybeans ; Feed Efficiency ; Pathogens ; Diet ; Pathogens ; Lungs
descriptionPorcine reproductive and respiratory syndrome virus (PRRSV) and Mycoplasma hyopneumoniae (MHP) are 2 significant respiratory pathogens in finishing pigs, often found in tandem. Recent anecdotes have implied that increasing soybean meal content of diets can be beneficial in pathogen-challenged pigs, while other reports suggest similar benefits by increasing the use of synthetic AA, specifically Trp. The objective of this study was to determine if increased synthetic Trp replacing a portion of SBM would impact performance of late finishing pigs dual-challenged with PRRSV and MHP. Ninety-six mixed sex pigs (120 ± 1.4 kg BW), were selected and randomly assigned to a high SBM (CON; 9 pens/trt) or synthetic Trp (SYN; 9 pens/trt) diet. Both diets were formulated to contain 0.70% TID Lys and were isocaloric; only crude protein was different between CON and SYN diets (15.9 vs. 13.5%, respectively). After 96 d on test diets, all pigs were inoculated intratracheally with MHP and intramuscularly with a field strain of PRRSV. Growth performance and feed efficiency were determined until pigs reached market weight (~138 kg BW), after which, carcass data and lung lesion scores were assessed. During the 96 d pre-challenge period, no performance differences were detected between the 2 dietary treatments. As expected, antibody titers for PRRSV and MHP increased post inoculation. However, change in PRRSV antibody titers from 0 to 28 d post inoculation tended (P = 0.09) to be increased in SYN verses CON pigs. MHP antibody titers and lung lesion scores did not differ between treatments. For the 28 d post-challenge period, there was no difference in ADG, ADFI or G:F. There was also no difference in hot carcass weight, yield percentage or muscle depth (P > 0.10). However, the SYN pigs had an increase in carcass fat depth compared to the CON (P = 0.01). Conversely, there was a tendency (P = 0.09) for carcass lean percent to be increased in CON pigs (57.6 vs. 57.1%, respectively). Altogether, these data indicate that diets with increased synthetic AA or decreased SBM do not alter pig performance during a late breaking respiratory health challenge.
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descriptionPorcine reproductive and respiratory syndrome virus (PRRSV) and Mycoplasma hyopneumoniae (MHP) are 2 significant respiratory pathogens in finishing pigs, often found in tandem. Recent anecdotes have implied that increasing soybean meal content of diets can be beneficial in pathogen-challenged pigs, while other reports suggest similar benefits by increasing the use of synthetic AA, specifically Trp. The objective of this study was to determine if increased synthetic Trp replacing a portion of SBM would impact performance of late finishing pigs dual-challenged with PRRSV and MHP. Ninety-six mixed sex pigs (120 ± 1.4 kg BW), were selected and randomly assigned to a high SBM (CON; 9 pens/trt) or synthetic Trp (SYN; 9 pens/trt) diet. Both diets were formulated to contain 0.70% TID Lys and were isocaloric; only crude protein was different between CON and SYN diets (15.9 vs. 13.5%, respectively). After 96 d on test diets, all pigs were inoculated intratracheally with MHP and intramuscularly with a field strain of PRRSV. Growth performance and feed efficiency were determined until pigs reached market weight (~138 kg BW), after which, carcass data and lung lesion scores were assessed. During the 96 d pre-challenge period, no performance differences were detected between the 2 dietary treatments. As expected, antibody titers for PRRSV and MHP increased post inoculation. However, change in PRRSV antibody titers from 0 to 28 d post inoculation tended (P = 0.09) to be increased in SYN verses CON pigs. MHP antibody titers and lung lesion scores did not differ between treatments. For the 28 d post-challenge period, there was no difference in ADG, ADFI or G:F. There was also no difference in hot carcass weight, yield percentage or muscle depth (P > 0.10). However, the SYN pigs had an increase in carcass fat depth compared to the CON (P = 0.01). Conversely, there was a tendency (P = 0.09) for carcass lean percent to be increased in CON pigs (57.6 vs. 57.1%, respectively). Altogether, these data indicate that diets with increased synthetic AA or decreased SBM do not alter pig performance during a late breaking respiratory health challenge.
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abstractPorcine reproductive and respiratory syndrome virus (PRRSV) and Mycoplasma hyopneumoniae (MHP) are 2 significant respiratory pathogens in finishing pigs, often found in tandem. Recent anecdotes have implied that increasing soybean meal content of diets can be beneficial in pathogen-challenged pigs, while other reports suggest similar benefits by increasing the use of synthetic AA, specifically Trp. The objective of this study was to determine if increased synthetic Trp replacing a portion of SBM would impact performance of late finishing pigs dual-challenged with PRRSV and MHP. Ninety-six mixed sex pigs (120 ± 1.4 kg BW), were selected and randomly assigned to a high SBM (CON; 9 pens/trt) or synthetic Trp (SYN; 9 pens/trt) diet. Both diets were formulated to contain 0.70% TID Lys and were isocaloric; only crude protein was different between CON and SYN diets (15.9 vs. 13.5%, respectively). After 96 d on test diets, all pigs were inoculated intratracheally with MHP and intramuscularly with a field strain of PRRSV. Growth performance and feed efficiency were determined until pigs reached market weight (~138 kg BW), after which, carcass data and lung lesion scores were assessed. During the 96 d pre-challenge period, no performance differences were detected between the 2 dietary treatments. As expected, antibody titers for PRRSV and MHP increased post inoculation. However, change in PRRSV antibody titers from 0 to 28 d post inoculation tended (P = 0.09) to be increased in SYN verses CON pigs. MHP antibody titers and lung lesion scores did not differ between treatments. For the 28 d post-challenge period, there was no difference in ADG, ADFI or G:F. There was also no difference in hot carcass weight, yield percentage or muscle depth (P > 0.10). However, the SYN pigs had an increase in carcass fat depth compared to the CON (P = 0.01). Conversely, there was a tendency (P = 0.09) for carcass lean percent to be increased in CON pigs (57.6 vs. 57.1%, respectively). Altogether, these data indicate that diets with increased synthetic AA or decreased SBM do not alter pig performance during a late breaking respiratory health challenge.
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doi10.2527/msasas2016-411
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