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Supplementation with calcium salt levels of palm oil in tropical grazing dairy cows.

Grant number: 17/01468-7
Support Opportunities:Scholarships in Brazil - Doctorate
Effective date (Start): April 01, 2017
Effective date (End): January 31, 2020
Field of knowledge:Agronomical Sciences - Animal Husbandry - Animal Nutrition and Feeding
Principal Investigator:Flávio Augusto Portela Santos
Grantee:José Maurício dos Santos Neto
Host Institution: Escola Superior de Agricultura Luiz de Queiroz (ESALQ). Universidade de São Paulo (USP). Piracicaba , SP, Brazil
Associated scholarship(s):18/08016-7 - Should we feed supplemental fatty acids to early lactation dairy cows: does the fatty acid profile of the supplement matter?, BE.EP.DR


The aim of this study is to evaluate the supplementation with calcium salt of palm oil (CSPO) in dairy cows. Four experiments will be conducted. In experiments 1 (Exp. 1), 2 (Exp. 2) the supplementation levels with CSPO will be: T1 = Control (no added CSPO); T2 = 200g/day; T3 = 400 g/day; and T4 = 600 g/day. An additional level (T5 = 800 g/day) will be used in experiment 3 (Ex. 3). In Exp. 1, 40 Jersey × Holstein cows will be used in a randomized block design, during 115 lactation days (1-105 LD). Supplementation effects will be evaluated in all lactation (until 285 LD) on performance and milk composition. Exp. 2 and will be conducted to evaluate the metabolic-hormonal parameters. In Exp. 3, five rumen-cannulated cows (15 LD) will be used in a Latin square design (5 × 5). Ruminal parameters, microbial synthesis and ruminal protozoa number will be measured. Data will be analyzed by SAS 9.4 (PROC MIXED). Significances levels will set at Pd 0.05.

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Academic Publications
(References retrieved automatically from State of São Paulo Research Institutions)
SANTOS NETO, José Maurício dos. Effects of calcium salts of palm fatty acids on nutrient digestibility, energy partitioning and production responses of lactating dairy cows. 2020. Doctoral Thesis - Universidade de São Paulo (USP). Escola Superior de Agricultura Luiz de Queiroz (ESALA/BC) Piracicaba.

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