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Article published the April 4, 2022
INTRODUCTIONCurrently, there is a major concern in the society with the use of antimicrobial agents in livestock feed, and such chemicals can be added to the feed as either therapeutic agents or performance enhancers. As enhancers, lower antimicrobial doses are used for longer periods, which can potentiate selection of resistant bacteria (Baurhoo et al., 2009). For this reason, a great pressu ...
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Article published the March 15, 2022
INTRODUCTIONPhosphorus is an essential mineral for the formation and maintenance of bone structure, playing additionally a number of functions in the body. According to UNDERWOOD & SUTTLE (1999), phosphorus is found in a high concentration in bone tissue where together with calcium they form hydroxyapatite, which is the major constituent of the skeleton. Phosphorus portion not related to ...
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Article published the July 8, 2021
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Article published the June 1, 2021
INTRODUCTIONBesides genetic improvement, there are several factors that influence performance and carcass traits of pigs and among them is the amino acid requirement. To obtain high muscle protein deposition rate in pigs genetically improved it is necessary to determine the standardized ileal digestible lysine (SIDL) requirement to ensure the diets allow expression of their maximum genetic potenti ...
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Article published the September 9, 2019
IntroductionThe association of all the stressors related to early weaning of piglets results in reduction in daily feed intake, especially during the first week. The interruption of feed intake in this phase results in intestinal villous atrophy and increased crypt depth (Pierce et al, 2005).According to Pinheiro & Machado (2007), the performance of piglets in the first week after weaning is s ...
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Article published the August 8, 2019
IntroductionObtaining satisfactory production rates as well as welfare of pigs depends on adequate energy and nutrient supply, and among these nutrients phosphorus has deserved special attention.Phosphorus is a critical element for body protein accretion because of its involvement in the energy metabolism, synthesis of nucleic acids, and structure of cell membranes. Muscle tissue contains gre ...
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Article published the October 4, 2018
IntroductionThe β-agonist ractopamine (RAC) is a dietary ingredient used in diets for finishing pigs to redirect nutrients to protein accretion that would otherwise go to the synthesis and deposition of lipids, resulting in improved performance and carcass traits (DUNSHEA et al., 1993; SCHINCKEL et al., 2003). It is well established that Lys requirements for optimal performance and carcass tr ...
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