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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Red propolis as an additive for preweaned dairy calves: Effect on growth performance, health, and selected blood parameters

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Slanzon, G. S. [1, 2] ; Toledo, A. F. [1, 2] ; Silva, A. P. [1, 2] ; Coelho, M. G. [1, 2] ; da Silva, M. D. [1, 2] ; Cezar, A. M. [1, 2] ; Bittar, C. M. M. [1, 2]
Total Authors: 7
[1] Univ Sao Paulo, Luiz De Queiroz Coll Agr, Dept Anim Sci, BR-13418900 Piracicaba, SP - Brazil
[2] ESALQ, Av Padua Dias 11, BR-13418900 Piracicaba, SP - Brazil
Total Affiliations: 2
Document type: Journal article
Source: JOURNAL OF DAIRY SCIENCE; v. 102, n. 10, p. 8952-8962, OCT 2019.
Web of Science Citations: 0

Propolis is a natural product produced by bees and sold commercially. It is well known for its antioxidant and anti-inflammatory effects and the ability to improve immune system functions in humans and animals. Many of its positive effects can contribute positively to animal productivity. The aim of this study was to evaluate possible beneficial effects of red propolis supplementation on growth performance, metabolism, and health status of dairy calves during the preweaning phase. Thirty-two newborn calves were individually housed, with free access to water and concentrate, and fed 6 L/d of whole milk. Animals were distributed in 2 treatments: (1) control and (2) supplementation with 4 mL/d of red propolis ethanolic extract (30%; EEP) in whole milk. Feed consumption and fecal and health scores were monitored daily from 1 d of age to 56 d. Calves were weighed and measured weekly. Blood samples were collected weekly, 2 h after morning milk feeding, for determination of glucose, total serum protein, urea, lactate, beta-hydroxybutyrate, total iron binding capacity, and total leukocytes (white blood cells) and erythrocytes (red blood cells). Starter feed intake, daily weight gain, and body measurements were not affected by the EEP supplementation. Blood parameters were also not affected, with the exception for the red blood cell counts, which were lower in animals supplemented with EEP. Supplementation with EEP significantly decreased fecal score, days with diarrhea, and veterinary treatments of diarrhea. These results indicate that red propolis supplementation has potential to improve calf health and reduce the incidence of diarrhea and, as a consequence, the use of antibiotics in calf rearing systems. (AU)

FAPESP's process: 17/13601-3 - Effects of different feeding managements on the microbiome, metabolsim, health and performance of dairy calves
Grantee:Carla Maris Machado Bittar
Support Opportunities: Regular Research Grants