Antioxidant capacity, reproductive response and glucose concentration and insulin of ewes supplemented prior to insemination with orange residue

Héctor Maximino Rodríguez-Magadán ,R Nieto-Aquino,Jorge Hernández Bautista ,Teódulo Salinas-Ríos ,Said Cadena-Villegas ,Jerónimo Herrera Pérez ,Juliana Andrea Marín-Sánchez

doi:10.1590/1678-4162-12128

Abstract

ABSTRACT The objective was to evaluate the antioxidant capacity, glucose and insulin concentration and reproductive performance of ewes supplemented with orange residue prior to insemination. Fifty-five multiparous ewes were divided into two corrals, and 15 unbred ewes were kept individually to measure feed consumption. Two integral diets were administered; T0: control treatment and T1: with 20% of dry matter of orange residue. Ten days after the start of supplementation, the ewes were synchronized. Supplementation was finalized prior to artificial insemination, then, a blood sample was taken to measure the antioxidant capacity and glucose and insulin concentration. An analysis of variance was made to evaluate the effect of treatment on the antioxidant capacity, glucose and insulin; and to analyze the response to estrus, percentage of gestation and prolificity a ji squared test was performed. Of 9 antioxidant compounds found in the orange residue, hesperidin (7.44%), chlorogenic acid (0.50%) and protocatechuic acid had the highest concentration. Feed intake, estrus response, percentage of gestation, antioxidant capacity, and glucose and insulin concentration were not affected by the treatment. It is concluded that inclusion of 20% of orange residue in the diet prior to insemination in ewes is possible.

Highlights

It has been demonstrated that food supplementation prior to insemination improves the reproductive response of ewes
The benefit of supplementation during this stage is widely known, frequently it is not administered due to high costs and lack of availability of the conventional ingredients. This makes it necessary to find alternative ingredients that can reduce the costs of supplementation, and various byproducts have been evaluated in animal feed
The study was made with regional sheep breeders, who prior to the study had maintained the sheep with feed based on bales of corn stubble, bean, alfalfa and hay

Summary

Introduction

It has been demonstrated that food supplementation prior to insemination improves the reproductive response of ewes. Venter and Greylin (1994) observed improvement in the reproductive parameters after supplying ewes for three weeks a diet with 2.83Mcalkg-1 and 11.7% of PC. The benefit of supplementation during this stage is widely known, frequently it is not administered due to high costs and lack of availability of the conventional ingredients. This makes it necessary to find alternative ingredients that can reduce the costs of supplementation, and various byproducts have been evaluated in animal feed

Objectives

Methods

Results