Ettle, Thomas; Roth, Franz Xaver
September 2006
Veterinarija ir Zootechnika;2006, Vol. 35 Issue 57, p44
Academic Journal
A choice feeding trial was carried out over a period of 6 weeks to investigate, whether piglets show preferences for diets with various tryptophan (Trp) concentrations and whether these preferences change with time. Piglets were randomly subdivided into 6 groups of 8 pigs each. Three reference groups (treatments (treat) 1 to 3) were fed either 0.09 % Trp, 0.16 % Trp or 0.24 % Trp diets. Three other groups had the choice from 2 diets containing 0.09 or 0.16 % Trp (treat 4), 0.09 or 0.24 % Trp (treat 5), or 0.16 % or 0.24 % Trp (treat 6). Piglets of treat 4 and 5 selected equal amounts of both diets on offer at random at the start of the experiment. Over the time course of the experiment, they developed a preference for the respective diet higher in Trp concentration and consumed almost exclusively this diet at the end of the experiment. On the contrary, animals given the choice of 0.16 and 0.24 % Trp diets consumed approximately equal amounts of both diets throughout the experiment. It is concluded that piglets are able to distinguish between diets with various Trp concentrations and that dietary selection is linked to the piglet's requirement.


Related Articles

  • Increasing Tryptophan. Goncalves, Marcio; Goodband, Bob // National Hog Farmer;10/15/2014, Vol. 59 Issue 10, p14 

    The article reports on the use of tryptophan in diets for nursery and growing-finishing pigs. Topics include approach of using a tryptophan to lysine ratio for diet formulation, a study at Kansas State University regarding effect of varying tryptophan to lysine ratio on pigs, and improvement in...

  • Later weaning could increase output, but... Wragg, Simon; Buss, Jessica // Farmers Weekly;9/27/2002, Vol. 137 Issue 13, p38 

    Reports on the possible impact of the European Union proposals to lift the minimum weaning age of piglets on their lifetime performance. Effect on the options for weaning diets; Benefits of the changes to producers.

  • LIVESTOCK. Buss, Jessica // Farmers Weekly;12/17/2004, Vol. 141 Issue 25, p28 

    Presents news briefs related to the animal industry in England as of December 2004. Effect of inadequate feeding of the sow during its pregnancy on piglet birth weight; Information on a sheep tour to be conducted by the Northern Uplands Sheep Strategy in January 2005.

  • Analytical Control of a Starter Pig Feed Medicated with Amoxicillin. Zemanov√°, M.; Maxa, J.; Hera, A.; Haas, Z.; Lemaire, F.; Sanquer, A.; Bousquet, E. // Acta Veterinaria Brno;Sep2008, Vol. 77 Issue 3, p341 

    Amoxicillin concentrations were determined by two independent laboratories for a pig starter feed medicated from a coated amoxicillin premix. The analytical method was previously transferred from one laboratory to the other one. The data between the two laboratories were consistent, showing...

  • Natural additive is better than AGPs. Buss, Jessica // Farmers Weekly;4/30/2004, Vol. 140 Issue 18, p45 

    Focuses on the trials conducted by Norfeed UK to compare the performance of piglets fed with its natural feed additive Cabanin CS and antibiotic growth promoters. Effect of Cabanin CS on the weight of the piglets.

  • The Interaction Between Dietary Valine and Tryptophan Content and Their Effect on the Performance of Piglets. Millet, Sam // Animals (2076-2615);Mar2012, Vol. 2 Issue 1, p76 

    Four experimental diets for newly weaned pigs were formulated: (1) low valine and low tryptophan; (2) low valine and high tryptophan; (3) high valine and low tryptophan and (4) high valine and high tryptophan. Dietary standardized ileal digestible (SID) lysine content was 1.06 g/kg. The SID...

  • Three Strategies For Promoting Good Gut Health.  // National Hog Farmer Expert Blog;4/ 3/2014, p3 

    The article presents strategies from animal health product manufacturer Hubbard Feeds for promoting good gut health in young pigs. These are strategies for decreasing gut inflammation, decreasing pathogen, and decreasing water loss. The author stresses that processing technologies and Hubbard...

  • Cut lysine component if phase feeding pigs. Buss, Jessica // Farmers Weekly;4/9/2004, Vol. 140 Issue 15, p32 

    Reports on the result of a study by Karen O'Connell of the Teagasc Advisory Service based in Fermoy, Ireland, on the effects of feeds with reduced lysine content on pigs. Outcomes of phase feeding pigs with reduced lysine content rations; Effects of a higher level of lysine on pigs.

  • USING ENTEROSORBENT PRAIMIX ALFASOB IN FEEDING GROWING PIGLETS. Caisin, Larisa; Harea, V.; Bivol, Ludmila // Scientific Papers: Series D, Animal Science - The International ;Oct2011, Vol. 54, p25 

    The aim of the trial was to study the effectiveness of the utilization of the sorbent Praymiks Alfasorb additives and to determine the optimal level of the introduction of these additives into the mixed feed for young pigs. The studies were conducted at the State Enterprise "Moldsuinhibrid" from...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics