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The interactive effects of high-fat, high-fiber diets and ractopamine HCl on finishing pig growth performance, carcass characteristics, and carcass fat quality.

A total of 576 mixed-sex pigs (PIC 327 x 1,050; initial BW = 55.8 [+ or -] 5.5 kg) were used to determine the effects of corn dried distillers grains with solubles (DDGS) and wheat middlings (midds) withdrawal 24 d before harvest in diets without or with ractopamine HCl (RAC) on growth performance,... Full description

Journal Title: Journal of animal science October 2014, Vol.92(10), pp.4585-4597
Main Author: Graham, A B
Other Authors: Goodband, R D , Tokach, M D , Dritz, S S , Derouchey, J M , Nitikanchana, S
Format: Electronic Article Electronic Article
Language: English
Subjects:
ID: E-ISSN: 1525-3163 ; DOI: 1525-3163 ; DOI: 10.2527/jas.2013-7434
Link: http://search.proquest.com/docview/1566821316/?pq-origsite=primo
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recordid: proquest1566821316
title: The interactive effects of high-fat, high-fiber diets and ractopamine HCl on finishing pig growth performance, carcass characteristics, and carcass fat quality.
format: Article
creator:
  • Graham, A B
  • Goodband, R D
  • Tokach, M D
  • Dritz, S S
  • Derouchey, J M
  • Nitikanchana, S
subjects:
  • Adipose Tissue–Drug Effects
  • Animal Feed–Analysis
  • Animal Nutritional Physiological Phenomena–Drug Effects
  • Animals–Veterinary
  • Body Composition–Pharmacology
  • Diet–Pharmacology
  • Dietary Fats–Growth & Development
  • Dietary Fiber–Growth & Development
  • Edible Grain–Metabolism
  • Intestines–Growth & Development
  • Iodine–Pharmacology
  • Muscle, Skeletal–Growth & Development
  • Phenethylamines–Growth & Development
  • Sus Scrofa–Growth & Development
  • Swine–Growth & Development
  • Zea Mays–Growth & Development
  • Dietary Fats
  • Dietary Fiber
  • Phenethylamines
  • Ractopamine
  • Iodine
  • Dried Distillers Grains With Solubles
  • Fiber
  • Growth
  • Iodine Value
  • Pigs
  • Withdrawal
ispartof: Journal of animal science, October 2014, Vol.92(10), pp.4585-4597
description: A total of 576 mixed-sex pigs (PIC 327 x 1,050; initial BW = 55.8 [+ or -] 5.5 kg) were used to determine the effects of corn dried distillers grains with solubles (DDGS) and wheat middlings (midds) withdrawal 24 d before harvest in diets without or with ractopamine HCl (RAC) on growth performance, carcass characteristics, and carcass fat quality. From d 0 to 49, pigs were fed a corn-soybean mealubased diet (CS) or a diet high in unsaturated fat and crude fiber provided by 30% DDGS and 19% wheat midds (HFF) and not balanced for energy. On d 49, pens of pigs previously fed CS diets remained on the CS diet. Half of the HFF-fed pigs were switched to the CSubased diets, which served as the withdrawal regimen. Finally, half of the HFF-fed pigs remained on the same HFF diet. All 3 regimens were fed without or with 10 mg/kg RAC. There were 12 pens per treatment with 8 pigs per pen. No significant diet regimen x RAC interactions were observed. From d 0 to 49, pigs fed the CS diet had increased (P < 0.001) ADG and G:F compared with pigs fed the HFF diet. Overall (d 0 to 73), pigs fed the CS diets throughout had greater (P < 0.001) ADG and G:F than those fed the HFF diets throughout. Pigs fed the withdrawal diets had greater (P = 0.014) ADG, but similar G:F to those fed the HFF diets throughout. Pigs fed the CS diets throughout had greater (P = 0.025) carcass yield compared with pigs fed the HFF diets throughout, with those fed the withdrawal diets intermediate. Pigs fed RAC had greater (P < 0.001) ADG, G:F, and carcass yield (P = 0.061than pigs not fed RAC. Jowl, backfat, belly, and leaf fat iodine value (IV) were lowest (P < 0.001) for pigs fed the CS diets, highest (P < 0.015) for those fed HFF diets throughout, and intermediate for pigs fed the withdrawal diet. There were no differences in either full or rinsed intestine or organ weights between pigs that were fed CS diets throughout and pigs fed the withdrawal diet; however, pigs fed the HFF diets throughout the study had increased (P = 0.002) rinsed cecum and full large intestine weights (P = 0.003) compared with the pigs fed the withdrawal diets. Withdrawing the HFF diet and switching to a CS diet for the last 24 d before harvest partially mitigated negative effects on carcass yield and IV often associated with high-fat, high-fiber ingredients such as DDGS and wheat midds. Feeding RAC for the last 24 d before market, regardless of dietary regimen, improved growth performance and carcass yield.
language: eng
source:
identifier: E-ISSN: 1525-3163 ; DOI: 1525-3163 ; DOI: 10.2527/jas.2013-7434
fulltext: fulltext
issn:
  • 15253163
  • 1525-3163
url: Link


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titleThe interactive effects of high-fat, high-fiber diets and ractopamine HCl on finishing pig growth performance, carcass characteristics, and carcass fat quality.
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descriptionA total of 576 mixed-sex pigs (PIC 327 x 1,050; initial BW = 55.8 [+ or -] 5.5 kg) were used to determine the effects of corn dried distillers grains with solubles (DDGS) and wheat middlings (midds) withdrawal 24 d before harvest in diets without or with ractopamine HCl (RAC) on growth performance, carcass characteristics, and carcass fat quality. From d 0 to 49, pigs were fed a corn-soybean mealubased diet (CS) or a diet high in unsaturated fat and crude fiber provided by 30% DDGS and 19% wheat midds (HFF) and not balanced for energy. On d 49, pens of pigs previously fed CS diets remained on the CS diet. Half of the HFF-fed pigs were switched to the CSubased diets, which served as the withdrawal regimen. Finally, half of the HFF-fed pigs remained on the same HFF diet. All 3 regimens were fed without or with 10 mg/kg RAC. There were 12 pens per treatment with 8 pigs per pen. No significant diet regimen x RAC interactions were observed. From d 0 to 49, pigs fed the CS diet had increased (P < 0.001) ADG and G:F compared with pigs fed the HFF diet. Overall (d 0 to 73), pigs fed the CS diets throughout had greater (P < 0.001) ADG and G:F than those fed the HFF diets throughout. Pigs fed the withdrawal diets had greater (P = 0.014) ADG, but similar G:F to those fed the HFF diets throughout. Pigs fed the CS diets throughout had greater (P = 0.025) carcass yield compared with pigs fed the HFF diets throughout, with those fed the withdrawal diets intermediate. Pigs fed RAC had greater (P < 0.001) ADG, G:F, and carcass yield (P = 0.061than pigs not fed RAC. Jowl, backfat, belly, and leaf fat iodine value (IV) were lowest (P < 0.001) for pigs fed the CS diets, highest (P < 0.015) for those fed HFF diets throughout, and intermediate for pigs fed the withdrawal diet. There were no differences in either full or rinsed intestine or organ weights between pigs that were fed CS diets throughout and pigs fed the withdrawal diet; however, pigs fed the HFF diets throughout the study had increased (P = 0.002) rinsed cecum and full large intestine weights (P = 0.003) compared with the pigs fed the withdrawal diets. Withdrawing the HFF diet and switching to a CS diet for the last 24 d before harvest partially mitigated negative effects on carcass yield and IV often associated with high-fat, high-fiber ingredients such as DDGS and wheat midds. Feeding RAC for the last 24 d before market, regardless of dietary regimen, improved growth performance and carcass yield.
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titleThe interactive effects of high-fat, high-fiber diets and ractopamine HCl on finishing pig growth performance, carcass characteristics, and carcass fat quality.
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