Effects of Two Dietary Protein Sources on Fetal Development in Gilts and on Growing Finishing Pigs PDF Download
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Author: Diego M. Gimenez
Publisher:
ISBN:
Category : Proteins in animal nutrition
Languages : en
Pages : 336
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Author: Diego M. Gimenez
Publisher:
ISBN:
Category : Proteins in animal nutrition
Languages : en
Pages : 336
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Author: John F. Patience
Publisher: Springer Science & Business Media
ISBN: 9086867561
Category : Science
Languages : en
Pages : 263
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Book Description
'Feed efficiency in swine' has been prepared as a comprehensive treatise on the current state of our understanding of this topic which is so important to the pork industry. Each chapter is written by international authorities who understand both the science and application of their topic area. The book provides detailed insight into the many factors affecting feed efficiency, ranging from diet processing to herd health, from nutrition to physiology and from day-to-day barn management to the adoption of advanced technologies. The authors explain such practical aspects as the challenge of interpreting feed efficiency information obtained on farm or the role of liquid feeding. The authors also delve into more scientific topics such as amino acid or energy metabolism or animal physiology. This book is written for people who have a technical interest in pork production, including nutritionists, geneticists, farm management specialists, veterinarians, other academics and, of course, pork producers.
Author: Haijun Liu
Publisher:
ISBN:
Category : Amino acids in animal nutrition
Languages : en
Pages : 242
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Book Description
A total of eight experiments utilizing 572 finishing pigs were conducted to evaluate the effect of reducing dietary protein level and adding amino acids on pig performance, carcass characteristics, and N excretion. The valine requirement of early-finishing (50 to 80 kg) barrows and the effect of adding isoleucine (Ile) and valine (Val) in amino acids fortified low-protein diets on finishing pig performance were also evaluated. In the first experiment (Exp. 1 of Chapter II), it was determined that the CP level in the diet for early-finishing (50 to 80 kg) gilts can be reduced up to four percentage units by adding Lys, Thr, Trp, and Met, with no detrimental effect on pig performance or carcass characteristics. The second study (Exp. 2 of Chapter II) indicates that Ile and/or Val may be limiting in a four-percentage-unit-protein-reduced diet for late-finishing (80 to 120 kg) gilts. The third experiment (Exp. 1 of Chapter III) indicates that the true digestible Lys requirement of early-finishing PIC barrows is not higher than 0.70%. In the fourth experiment (Exp. 2 of Chapter III), it was demonstrated that dietary protein level for early-finishing PIC barrows can be reduced up to five percentage units by adding Lys, Thr, Trp, Met, and Ile, with no detrimental effect on pig performance or carcass characteristics. Valine was not limiting in a 10.49% CP diet for early-finishing PIC barrows with ADFI of 3.1 kg/d, and the true digestible Val requirement of early-finishing PIC barrows gaining 1.0 kg/d, was not greater than 11.4 g/d. In the fifth experiment (Exp. 3 of Chapter III), we found that decreasing dietary protein level by 4.81 percentage units and adding amino acids to the diet reduced N excretion of early-finishing barrows by 40.6%. In the sixth experiment (Exp. 4 of Chapter III), it was determined that the dietary protein level for early-finishing barrows can be reduced up to four percentage units by adding Lys, Thr, Trp, and Met, with no detrimental effects on pig performance or carcass characteristics, and reducing dietary protein level by four percentage units can reduce N excretion by 38.4%. In the seventh experiment (Exp. 1 of Chapter IV), it was determined that late-finishing barrows fed an amino acid (Lys, Thr, Trp, Met, Ile, and Val) fortified corn diet (7.92% CP) have similar performance and carcass characteristics as pigs fed a corn-soybean meal control 12.50% CP diet. Deleting Ile or Val in an amino acids fortified corn diet may decrease pig performance. In the eighth experiment (Exp. 2 of Chapter IV), it was determined that late-finishing gilts fed an amino acid (Lys, Thr, Trp, Met, Ile, and Val) fortified corn diet (9.55% CP) have similar performance and carcass characteristics as pigs fed a corn-soybean meal control 15.17% CP diet. Decreasing dietary CP level from 15.17 to 9.55% decreases N excretion of late-finishing pigs by 48.28%. Deleting Ile or Val in an amino acid fortified corn diet may decrease pig performance. In summary, finishing pigs fed a low protein diet properly fortified with crystalline amino acids can have similar performance and carcass characteristics as pig fed typical protein level corn-soybean meal control diets, and N excretion will be greatly reduced.
Author: Rick Don Jones
Publisher:
ISBN:
Category :
Languages : en
Pages : 72
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Author: Alvaro Rojo Gomez
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Studies were conducted to evaluate the effects of corn byproducts high-protein died distillers grain (HP-DDG), and dried distillers grain with solubles (DDGS), and branched chain amino acids (BCAA) on the growth performance and meat quality of pigs. The first study evaluated the combined effect of dietary level of DDGS and HP-DDG on the growth performance of wean-finish pigs and carcass and pork quality characteristics. This study demonstrated that DDGS can be included at up to 30% in diets (without HP-DDG) without compromising growth performance of wean-to-finish pigs. However, growth performance was increasingly compromised at higher inclusion levels of both co-products and belly firmness was negatively affected by increasing levels of both DDGS and HP-DDG. A second experiment was designed to define the minimum CP level and whether non-essential amino acids become limiting in low crude protein diets for late finishing pigs. The results of this study demonstrated that late finishing pigs can be fed diets with 9.76% crude protein level supplemented with 0.32 % L-Lys HCL and other essential amino acids without affecting growth rate and that non-essential amino acids were not limiting in the low crude protein diets evaluated. A third study was designed to recreate the negative effects on growth performance of feeding diets with 30% HP-DDG inclusion level and to test if the negative effect of feeding high HP-DDG levels on growth performance can be reproduced by adding excess branched chain amino acids (leucine, isoleucine, and valine) to standard corn-soybean meal based diet. The results show that the reduction in the growth rates of growing pigs fed diets with 30% HP-DDG inclusion levels may be due to the dietary excesses of leucine present in diets with HP-DDG at 30% inclusion levels. The same effect was not present in finishing pigs. In general, growth performance and belly quality are compromised at higher inclusion levels of both HP-DDG and DDGS. The results of the last studies indicate that leucine level may play an important role on the reduction of the growth performance of pigs fed 30% HP-DDG inclusion levels.
Author: Aaron Michael Jones
Publisher:
ISBN:
Category :
Languages : en
Pages :
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A total of 6,465 nursery pigs were used in 8 experiments. Experiment 1 investigated the effects of Lactobacillus plantarum (LP) or fermented soybean meal (FSBM) on nursery pig growth performance. A LP x FSBM interaction was detected for G:F, where LP and FSBM individually improved G:F, but the effect was not additive. Experiment 2 evaluated the effects of increasing levels of LP on nursery pig performance. No evidence for differences in growth performance were observed among dietary treatments. Experiment 3 and 4 examined the effects of fish meal source and level on nursery pig growth performance. Overall, a source x level interaction for ADG, G:F and final BW was observed as increasing fish meal source 1 improved ADG and G:F; however, pigs fed fish meal source 2 had improved ADG and G:F at 3%, but decreased at 6%. Pigs fed fish meal source 3 had no further improvements in ADG and G:F beyond the 3% inclusion. No evidence for differences were detected between the dietary treatments for ADFI. Experiment 5 evaluated the effects of feeding fish solubles on nursery pig performance. Pigs fed diets with fish meal had increased ADG and ADFI compared to pigs fed the control diet. There was no evidence for differences in growth performance as fish solubles increased. Experiment 6 and 7 investigated the effects of enzymatically-treated soybean meal (ESBM) on nursery pig performance. Results indicated that nursery pigs fed diets with greater than 9% of ESBM resulted in decreased ADFI and final BW. Experiment 8 evaluated the effects of dietary electrolyte balance (dEB) on nursery pig performance. Increasing dEB in diets from weaning to 21-d after weaning resulted in an increase in ADG and BW, which was the result of a marginally significant improvement in ADFI and G:F. Finally, an experiment was conducted to determine the optimal strategy for collecting and submitting samples that adequately describe the nutrient levels in diets collected from a commercial swine facility. Sampling feeders with a probe resulted in less variability on an individual basis, but seemed to get washed out when individual samples were pooled to form a composite sample.
Author: Andrew Peter Christiansen
Publisher:
ISBN:
Category : Swine
Languages : en
Pages : 92
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Author: Hayden Kerkaert Kerkaert
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Experiment 1 used a total of 1,200 pigs to determine the effects of added Val, Ile, and Trp in high Leu on growing-finishing pig growth performance and carcass characteristics in order to validate a prediction model. Experiments 2 and 3 used a total of 3,888 pigs to determine the effects of manganese source and level on growing-finishing pigs growth performance and carcass characteristics. Experiment 4 used a total of 1,944 pigs to determine the effects of increasing added xylanase in nutrient adequate diets on growing-finishing pigs growth performance and carcass characteristics. Experiment 1 determined that increasing Val or Ile in high Lys-HCl-DDGS-based diets improved growth performance and final BW compared with pigs fed diets containing high levels of Lys-HCl without added Val and Ile. The addition of Trp alone could not overcome the negative effects of growth performance of pigs fed high Leu diets. These results demonstrate that negative effects of high Leu concentrations in corn-DDGS-based diets can be reversed by increasing the ratios of Val and Ile to Lys. In Exp. 2 and 3, growth performance was improved when 8 and 32 mg/kg of Mn is supplemented compared to 16 mg/kg and when pharmacological levels of Cu are supplemented; pigs fed Mn hydroxychloride had improved growth performance. Also, as Mn concentration in the diet increased, regardless of source, total Mn concentration in the liver increased but increased less for pigs fed Mn hydroxychloride. In Exp. 4, when xylanase was added to nutrient adequate diets, there was improved carcass yield when intermediate levels were fed, however, there was no impact on growth performance or mortality.
Author: Ethan Bradley Stas
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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The 3 chapters of this thesis involve 1) an evaluation of fermented corn protein and its effects in either high or low branch chain amino acid to leucine ratio diets on nursery pig performance and feed intake preference, 2) an evaluation of the acid-binding capacity of ingredients and complete diets commonly used for weanling pigs, and 3) the influence of anchovy fish meal compared to other protein sources on nursery pig performance. Chapter 1 consisted of 3 experiments which used 880 weaned pigs to evaluate fermented corn protein's effect on nursery pigs. In Exp. 1, fermented corn protein was evaluated as a potential replacement to enzymatically treated soybean meal. In Exp. 2, pigs were fed increasing levels of fermented corn protein with either low or high branch chain amino acid to leucine ratios. In Exp. 3, fermented corn protein and its components were evaluated to measure nursery pig feed intake preference. Results from the studies suggest that fermented corn protein decreases nursery pig performance and increasing branch amino acid to leucine ratio only improves feed efficiency, however, whole stillage solids appear to be the component of fermented corn protein that negatively affect feed intake preference. Chapter 2 measured the acid-binding capacity of common nursery pig feed ingredients and evaluated acid-binding capacity additivity in complete diets. The results of this study suggest a low acid-binding capacity diets can be successfully formulated through careful selection of ingredients. Ingredients, with the exception of calcium carbonate and zinc oxide, appear to be additive in complete diets. Calcium carbonate and zinc oxide's acid-binding capacity contribution in complete diets did not match its value from ingredient analysis. Chapter 3 consisted of two experiments which used 2,502 weaned pigs to determine the influence of anchovy fish meal compared to other protein sources on nursery pig performance. In both experiments, pigs were fed diets containing one of six vegetable or animal protein sources with Exp. 2 being held in a commercial environment. Protein sources included enzymatically treated soybean meal, spray-dried bovine plasma, fermented soybean meal with or without fish solubles, fish meal with or without fish solubles. In Exp. 1, fish meal with solubles and spray-dried bovine plasma resulted in a 5 to 7% improvement in average daily gain, although results were not significant. However, in Exp. 2, pigs fed fish meal with solubles had decreased growth performance compared to other protein sources.
Author: University of Florida. Agricultural Experiment Station
Publisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 270
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