Organic Chromium Form Alleviates the Detrimental Effects of Heat Stress on Nutrient Digestibility and Nutrient Transporters in Laying Hens

• Published in: Biological trace element research 2019-06, Vol.189 (2), p.529-537
• Main Authors: Orhan, Cemal, Tuzcu, Mehmet, Deeh, Patrick Brice Defo, Sahin, Nurhan, Komorowski, James R., Sahin, Kazim
• Format: Article
• Language: English
• Subjects: Amino acids; Bioavailability; Biochemistry; Biomedical and Life Sciences; Biotechnology; Cages; Chromium; Diet; Digestibility; Dry matter; Environmental conditions; Fatty acids; Glucose transport; Heat stress; Heat tolerance; Ileum; Life Sciences; Mineral nutrients; Nutrient sources; Nutrition; Oncology; Organic matter; Physical growth; Proteins
• ISSN: 0163-4984; 1559-0720
• DOI: 10.1007/s12011-018-1485-9

In the present study, we investigated the effects of chromium-picolinate (CrPic) and chromium-histidinate (CrHis) on nutrient digestibility and nutrient transporters in laying hens exposed to heat stress (HS). Hens ( n  = 1800; 16 weeks old) were kept in cages in temperature-controlled rooms at either 22 ± 2 °C for 24 h/day (thermoneutral (TN)) or 34 ± 2 °C for 8 h/day, from 08:00 to 17:00, followed by 22 °C for 16 h (HS) for 12 weeks. Hens reared under both environmental conditions were fed one of three diets: a basal diet and the basal diet supplemented with either 1.600 mg of CrPic (12.43% Cr) or 0.788 mg of CrHis (25.22% Cr) per kg of diet, delivering 200 μg elemental Cr per kg of diet. HS impaired the nutrient digestibility and nutrient transports in laying hens ( P