Importance of colostrum in thermoregulation of calves exposed to challenges of low temperatures

• Grant number: 14/20987-7
• Support Opportunities: Scholarships in Brazil - Doctorate
• Start date: March 01, 2015
• End date: March 03, 2018
• Field of knowledge: Agronomical Sciences - Animal Husbandry - Animal Nutrition and Feeding
• Agreement: Coordination of Improvement of Higher Education Personnel (CAPES)
• Principal Investigator: Carla Maris Machado Bittar
• Grantee: Fernanda Lavínia Moura Silva
• Host Institution: Escola Superior de Agricultura Luiz de Queiroz (ESALQ). Universidade de São Paulo (USP). Piracicaba , SP, Brazil
• Associated scholarship(s): 16/18603-1 - Performance and production cost of calves fed milk replacer or whole milk and traditional or a modified calf starter program in low environmental temperature, BE.EP.DR

Abstract

The performance of dairy calves is associated with practices related to colostrum feeding management, being important the evaluation of the effect of colostrum intake on the thermogenic and metabolic characteristics in situations of stress by cold. In experiment 1, animals will be divided into 3 groups according to treatments: feeding of 2L, 3L or 4L of colostrum. After colostrum feeding, animals will be kept in a room with temperature of 22 ° C for 1 hour, and rectal temperature and blood samples will be taken. After this period animals will be placed in a room at 10 ° C, where they will remain for 120 minutes, and blood samples will again be taken at 0, 30, 60, 90, and 120 minutes, and physiological parameters will be monitored. In experiment 2, the performance will be evaluated during the milk-feeding period of the animals belonging to the experiment 1. During the trial, blood samples will be collected weekly. In experiment 3, 30 calves, which will be housed in individual cages in closed sheds with controlled temperature (26 or 14 ° C ) will be used. The animals will receive 6 L of milk replacer at two meals, starter feed and water free-choice, and performance will be monitored. Weekly blood samples will be collected. On all trials blood samples will be used to determine blood metabolites, hematocrit and white blood cell count. The design of the experiments will be completely randomized block design. (AU)

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

SILVA, FERNANDA LAVINIA MOURA; MIQUEO, EVANGELINA; SILVA, MARCOS DONIZETE DA; TORREZAN, THAIS MANZONI; ROCHA, NATHALIA BRITO; SALLES, MARCIA SALADINI VIEIRA; BITTAR, CARLA MARIS MACHADO. Thermoregulatory Responses and Performance of Dairy Calves Fed Different Amounts of Colostrum. ANIMALS, v. 11, n. 3, MAR 2021. (14/05614-0, 14/20987-7)

MOURA SILVA, FERNANDA LAVINIA; MACHADO BITTAR, CARLA MARIS. Thermogenesis and some rearing strategies of dairy calves at low temperature - a review. JOURNAL OF APPLIED ANIMAL RESEARCH, v. 47, n. 1, p. 115-122, JAN 1 2019. (14/05614-0, 14/20987-7)

Academic Publications

(References retrieved automatically from State of São Paulo Research Institutions)

SILVA, Fernanda Lavínia Moura. The role of colostrum for the newborn thermogenesis and feeding strategies for calves raised in low temperatures. 2018. Doctoral Thesis - Universidade de São Paulo (USP). Escola Superior de Agricultura Luiz de Queiroz (ESALA/BC) Piracicaba.