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Effects of flaxseed, raw soybeans and calcium salts of fatty acids on apparent total tract digestibility, energy balance and milk fatty acid profile of transition cows

Published online by Cambridge University Press:  01 March 2016

J. R. Gandra ,
R. D. Mingoti ,
R. V. Barletta ,
C. S. Takiya ,
L. C. Verdurico ,
J. E. Freitas Jr ,
P. G. Paiva ,
E. F. Jesus ,
G. D. Calomeni  and
F. P. Rennó
J. R. Gandra
Affiliation:
Department of Animal Sciences, Universidade Federal da Grande Dourados, Rodovia Dourados-Itahum, km 12, 79804-970, Dourados, MS, Brazil
R. D. Mingoti
Affiliation:
Department of Animal Nutrition and Production, School of Veterinary Medicine and Animal Sciences, University of Sao Paulo, Av. Duque de Caxias Norte, 225-Campus da USP, 13635-900, Pirassununga, SP, Brazil
R. V. Barletta
Affiliation:
Department of Animal Nutrition and Production, School of Veterinary Medicine and Animal Sciences, University of Sao Paulo, Av. Duque de Caxias Norte, 225-Campus da USP, 13635-900, Pirassununga, SP, Brazil
C. S. Takiya
Affiliation:
Department of Animal Nutrition and Production, School of Veterinary Medicine and Animal Sciences, University of Sao Paulo, Av. Duque de Caxias Norte, 225-Campus da USP, 13635-900, Pirassununga, SP, Brazil
L. C. Verdurico
Affiliation:
Department of Animal Nutrition and Production, School of Veterinary Medicine and Animal Sciences, University of Sao Paulo, Av. Duque de Caxias Norte, 225-Campus da USP, 13635-900, Pirassununga, SP, Brazil
J. E. Freitas Jr
Affiliation:
Department of Animal Sciences, Federal University of Bahia, 500, Avenida Adhemar de Barros, 40170-110, Salvador, BA, Brazil
P. G. Paiva
Affiliation:
Department of Animal Sciences, Universidade Estadual Paulista ‘Júlio de Mesquita Filho’/Campus Jaboticabal, Rod. Prof. Paulo Donato Castellane, km 5, 14884-900, Jaboticabal, SP, Brazil
E. F. Jesus
Affiliation:
Department of Animal Sciences, Universidade Estadual Paulista ‘Júlio de Mesquita Filho’/Campus Jaboticabal, Rod. Prof. Paulo Donato Castellane, km 5, 14884-900, Jaboticabal, SP, Brazil
G. D. Calomeni
Affiliation:
Department of Animal Nutrition and Production, School of Veterinary Medicine and Animal Sciences, University of Sao Paulo, Av. Duque de Caxias Norte, 225-Campus da USP, 13635-900, Pirassununga, SP, Brazil
F. P. Rennó*
Affiliation:
Department of Animal Nutrition and Production, School of Veterinary Medicine and Animal Sciences, University of Sao Paulo, Av. Duque de Caxias Norte, 225-Campus da USP, 13635-900, Pirassununga, SP, Brazil
*
†E-mail: francisco.renno@usp.br
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Abstract

Oilseeds offer some protection to the access of ruminal microorganisms and may be an alternative to calcium salts of fatty acids (FA), which are not fully inert in the ruminal environment. This study aimed to evaluate the effects of different sources of FA supplementation on apparent total tract nutrient digestibility, milk yield and composition, and energy balance (EB) of cows during the transition period and early lactation. We compared diets rich in C18:2 and C18:3 FA. Multiparous Holstein cows were randomly assigned to receive one of the four diets: control (n=11); whole flaxseed (WF, n=10), 60 and 80 g/kg (diet dry matter (DM) basis) of WF during the prepartum and postpartum periods, respectively; whole raw soybeans (WS, n=10), 120 and 160 g/kg (diet DM basis) of WS during the prepartum and postpartum periods, respectively; and calcium salts of unsaturated fatty acids (CSFA, n=11), 24 and 32 g/kg (diet DM basis) of CSFA during the prepartum and postpartum periods, respectively. Dry cows fed WF had higher DM and net energy of lactation (NEL) intake than those fed WS or CSFA. The FA supplementation did not alter DM and NDF apparent total tract digestibility, dry cows fed WF exhibited greater NDF total tract digestion than cows fed WS or CSFA. Feeding WS instead of CSFA did not alter NEL intake and total tract digestion of nutrients, but increased milk fat yield and concentration. Calculated efficiency of milk yield was not altered by diets. FA supplementation increased EB during the postpartum period. Experimental diets increased long-chain FA (saturated and unsaturated FA) in milk. In addition, cows fed WS and CSFA had higher C18:1 trans-11 FA and C18:2 cis, and lower C18:3 FA in milk than those fed WF. Furthermore, cows fed CSFA had higher C18:1 trans-11 and cis-9, trans-11 FA than cows fed WS. Although supplemental C18:2 and C18:3 FA did not influence the milk yield of cows, they positively affected EB and increased unsaturated long-chain FA in milk fat.

Keywords

fatty acidlinoleic acidlinolenic acidoilseedunsaturated fatty acid
Type
Research Article
Information
animal , Volume 10 , Issue 8 , August 2016 , pp. 1303 - 1310
Copyright
© The Animal Consortium 2016 

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