Article published the December 30, 2019
Introduction Calcium is an essential nutrient to the body of birds, as it participates in several biochemical functions and in bone formation. The deficiency of this mineral can cause damages; thus, it is essential to adequately meet the nutrient requirements in the different stages of bird development. Its metabolism is closely related to that of phosphorus (P) (Mello et al., 2012), which leads ...
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Article published the December 30, 2019
Introduction Lysine is the first limiting amino acid in corn-soybean meal-based diets for pigs during the postweaning period (ROSTAGNO et al., 2011; NRC, 2012), and is commonly used as a reference when estimating the nutritional requirement for other essential amino acids (NEMECHEK et al., 2012). The standardized ileal digestible lysine (SID Lys) requirement of pigs is affected by several factors ...
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Article published the September 24, 2019
INTRODUCTION The post-weaning period may be considered critical for piglets, once they are submitted to several stress situations (SOBESTIANSKY et al., 2001) such as environmental changes (new facilities and/ or environmental temperatures), removal from the sow, replacement of liquid with solid diets, and social tensions arising from getting animal grouped back after being separated (FERREIRA et ...
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Article published the September 9, 2019
Introduction The 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 ...
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Article published the August 26, 2019
Introduction Phosphorus (P) is an important mineral required in poultry diets for normal growth and development (Ankra-Badu et al., 2004). It constitutes the costliest mineral nutrient in animal nutrition and is the third most expensive component in non-ruminant diets, where the first two are energy and protein (Boling et al., 2000). Countless studies have been focused on the P requirement for p ...
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Article published the August 14, 2019
Introduction Broiler diets consist basically of plant-derived ingredients. These feeds are characterized by having a large part of phosphorus in the form of phytate (Rostagno et al., 2011), which is poorly hydrolyzed by monogastric animals (Ravindran et al., 1995), which do not have a significant activity of enzymes such as phytase throughout the gastrointestinal tract. However, in addition to c ...
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Article published the August 8, 2019
Introduction Obtaining 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 ...
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Occupation: Prof. Adjunto, D.S., Departamento de Zootecnia
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