Additive effects of L-carnitine and chromium picolinate on sow reproductive performance

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The objective of this study was to compare carnitine and chromium on sow reproductive performance. In addition, a second objective was to determine if the responses to carnitine and chromium were additive. It was concluded that Supplementing gestation and lactation diets with added L-carnitine and chromium had minimal effects on
number of pigs born alive per litter; however, the improvement in farrowing rate observed during both
parities resulted in greater overall number of pigs born. These data suggest that improvements in reproductive
performance from the two nutrients may be additive. Additional research is needed to verify the biological mechanisms L-carnitine and chromium improve sow productivity.

Association of polymorphism in the alpha (1,2) fucosyltransferase gene with growth performance in two Western pig breeds in Taiwan

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This study was conducted
to investigate the genotypic frequencies and the
effects of M307 and RYR1 on the growth performance
of two major Western pig breeds of Taiwan. It was concluded that the present results suggest that allelic
frequencies of the favorable A allele of M307 in two
major Western pig breeds in Taiwan are higher than
those in European populations. While selection of the
favorable AA genotype at M307 for resistance to E. coli
F18 adhesion resistance may not affect growth performance
traits in Duroc and Landrace pigs, the effect of
RYR1 on growth performance should be monitored during
the selection process.

A Microbe that will dramatically reduce the effect of DON Mycotoxin on pigs

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Deoxynivalenol (DON) is a mycotoxin which can
occur when grains, such as corn, wheat and barley,
are infected with a fungus called fusarium. For swine, its
presence can result in feed refusals and the reduction of
weight gains. An animal trial conducted last year by researchers with
Agriculture and Agri-Food Canada (AAFC) and the University
of Guelph proved that a microbe normally found in a chicken’s
gut will dramatically reduce the effect of DON on pigs.
The microbe is capable of transforming DON to a much less
toxic product.This year’s work will involve isolating the enzyme within
the microbe that is responsible for the transforming effect and researchers are in the final stages of
doing just that. Ting Zhou, an AAFC research scientist involved in the
project explains that an enzyme is a more stable element than a living microbe. Production and delivery of it
to the animals is also easier.

Intensive hog farming operations and self-reported health among nearby rural residents in Ottawa, Canada

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Effects of dietary supplementation of an enzyme blend on the ileal and fecal digestibility of nutrients in growing pigs

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The objective of this experiment was to determine the effect of a ƒÀ-glucanase-protease enzyme blend product (EBP) on fecal digestibility (FD), apparent ileal digestibility (AID), standardized ileal digestibility, and digestibility in the hindgut of growing pigs. The results illustrate that the EBP fed to growing pigs improved the FD of DM, OM, energy, CP, nonfiber carbohydrate, total dietary fiber, acid-hydrolyzed fat, Ca, and P, and the AID of NDF and hemicellulose, but the standardized ileal digestibility of amino acids was not improved by supplying the EBP
in corn-soybean meal-based diets of growing pigs.

Effect of crude glycerol on pellet mill production and nursery pig growth performance

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This study determined the effects of diets containing crude glycerol on pellet mill production efficiency and nursery pig growth performance. It was concluded that adding crude glycerol to the diet before pelleting increased pellet durability and improved feed mill production efficiency.

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Effect of chromium source on tissue concentration of chromium in pigs

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The relative bioavailability among four organic Cr was assessed as well as the maximum amount that can be used safely as supplementation. The results show clear Cr effects on multiple tissues, which means it was absorbed and deposited. The lack of negative response in growth performance carcass measure and clinical chemicst at increased quantities provides assurance that normal quantities of addition are safe.

Effect of xylanase supplementation of diets containing wheat distiller’s dried grains with solubles on energy, amino acid and phosphorus digestibility and growth performance of grower-finisher pigs

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Wheat-based diets with or without wheat distiller’s dried grains with solubles
(DDGS) were tested with or without supplementary xylanase (4000 U kg
1 feed) in a 22 factorial arrangement. In eight
ileal-cannulated barrows, xylanase improved the apparent ileal digestibility of energy and threonine in wheat (PB0.05),
but not in wheat DDGS diets (P0.10). Xylanase did not affect total tract digestibility of energy or P (P0.10). In 72
grower-finisher pigs, xylanase did not increase growth performance of pigs fed either wheat or wheat DDGS (P0.10).
The differential response of supplementary xylanase to wheat versus wheat DDGS diets indicates that the arabinoxylans in
wheat DDGS did not match the specific xylanase activity.

Effect of low doses of Aspergillus niger phytase on growth performance, bone strength, and nutrient absorption and excretion by growing and finishing swine fed corn-soybean meal diets deficient in available phosphorus and calcium

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Two experiments were conducted to evaluate the efficacy of low doses of Aspergillus niger (AN) phytase for growing and finishing pigs fed cornsoybean meal (SBM) diets that were deficient in available phosphorus and calcium. It was found at 450 U of AN phytase per kg was effective in replacing 0.9 g of the inorganic P/kg of corn-SBM diet for finishing swine based on bone strength, whereas 300 or 150 U of AN phytase/kg of diet maintained growth performance of grower or finisher pigs.

Recent advances in the development of recombinant vaccines against classical swine fever virus: Cellular responses also play a role in protection

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In this review article, some of the most recent advances in the field of recombinant
vaccines against Classical swine fever virus are presented and the nature of the protective immune responses they induce is discussed.