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Tropical tannin-rich fodder intake modifies saliva-binding capacity in growing sheep

Published online by Cambridge University Press:  07 October 2013

J. J. Vargas-Magaña ,
A. J. Aguilar-Caballero ,
J. F. J. Torres-Acosta ,
C. A. Sandoval-Castro ,
H. Hoste  and
C. M. Capetillo-Leal
J. J. Vargas-Magaña
Affiliation:
Facultad de Medicina Veterinaria y Zootecnia, Universidad Autónoma de Yucatán, Km 15.5 Carretera Mérida-Xmatkuil, Mérida, Yucatán, Mexico Escuela Superior de Ciencias Agropecuarias, Universidad Autónoma de Campeche, calle 53 s/n Escárcega, CampecheMéxico
A. J. Aguilar-Caballero
Affiliation:
Facultad de Medicina Veterinaria y Zootecnia, Universidad Autónoma de Yucatán, Km 15.5 Carretera Mérida-Xmatkuil, Mérida, Yucatán, Mexico
J. F. J. Torres-Acosta
Affiliation:
Facultad de Medicina Veterinaria y Zootecnia, Universidad Autónoma de Yucatán, Km 15.5 Carretera Mérida-Xmatkuil, Mérida, Yucatán, Mexico
C. A. Sandoval-Castro*
Affiliation:
Facultad de Medicina Veterinaria y Zootecnia, Universidad Autónoma de Yucatán, Km 15.5 Carretera Mérida-Xmatkuil, Mérida, Yucatán, Mexico
H. Hoste
Affiliation:
UMR 1225 INRA/DGER IHAP, ENVT, 23 Chemin des Capelles, F31076 Toulouse, France
C. M. Capetillo-Leal
Affiliation:
Facultad de Medicina Veterinaria y Zootecnia, Universidad Autónoma de Yucatán, Km 15.5 Carretera Mérida-Xmatkuil, Mérida, Yucatán, Mexico
*
†E-mail: ccastro@uady.mx
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Abstract

We evaluated the effect of feeding dietary tannins from Lysiloma latisiliquum fresh forage on the saliva tannin-binding capacity of hair sheep lambs without previous exposure to tannin-rich (TR) fodder. Twenty-four hair sheep lambs (13.6±3.04 kg LW) were fed a tannin-free diet at the beginning of the experimental period (from day 10 to 13). On day 14, lambs were distributed into three groups (n=8): control group (CG), fed with the tannin-free diet (from D10 to D112); tannin short-term group (TST), fed the basal diet and 650 g of L. latisiliquum forage (from D14 to D55); tannin long-term group (TLT), fed the basal diet and 650 g of L. latisiliquum forage (from D14 to D112). Saliva samples were collected from the mouth of each lamb in the morning before feeding time on D10 and D14 (baseline period), on D49 and D56 (period 1) and on D97 and D112 (period 2). The tannin binding response of salivary protein (∆% turbidity) was determined with the haze development test (HDT) using either tannic acid or L. latisiliquum forage acetone extract. A turbidity protein index (TPI) was calculated as (∆% turbidity/[salivary protein (mg)]). Differences in HDT and TPI in the different groups were compared by repeated measures ANOVA using Proc Mixed. All groups had similar ∆% turbidity throughout the experiment (P>0.05). At baseline and period 1, the TPI of the different groups was similar (P>0.05). On period 2 the TLT group showed higher TPI compared with CG (P<0.05). Meanwhile, CG and TST showed similar salivary TPI. The saliva of hair sheep lambs consuming TR L. latisiliquum fresh fodder (TLT group) increased their TPI compared with control lambs not exposed to tannins.

Keywords

sheeptannin-rich plantsLysiloma latisiliquumsalivary response
Type
Nutrition
Information
animal , Volume 7 , Issue 12 , December 2013 , pp. 1921 - 1924
Copyright
Copyright © The Animal Consortium 2013 

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