Does supplementation of boron with yeast or humate substances have a better chance at modulating rumen fermentation in yearling rams?


Published: Nov 9, 2022
Updated: 2022-11-09
Versions:
2022-11-09 (2)
Keywords:
Merino rams rumen fermentation boron Saccharomyces cerevisiae humate
O Sizmaz
https://orcid.org/0000-0002-2027-5074
BH Koksal
https://orcid.org/0000-0002-5676-446X
MS Ramay
https://orcid.org/0000-0002-7061-0483
G Yildiz
https://orcid.org/0000-0002-1003-9254
Abstract

This study aimed to determine the effects of boron fed alone or with yeast culture or liquid humate on ruminal pH, ammonia-N, short-chain fatty acid (SCFA) concentration, protozoa counts and some nutrients’ apparent digestibility in yearling rams. Therefore, four Merino rams were allocated to 4×4 Latin square design and were randomly assigned to one of four treatments to basal diet: negative control with no supplements (NC), positive control (PC) with 30 ppm (Dry matter basis) boric acid alone, combinations of 30 ppm boric acid and 3 g/kg yeast culture (YC) and 30 ppm boric acid and 5 ml/kg liquid humate (LH). There were no negative effects of additives’ supplementation on animals daily feed consumption. No significant differences were observed among treatments for rumen parameters investigated, however, numerically lowest values for pH & ammonia-N in LH while highest SCFA concentrations in YC and LH groups were observed. Apparent nutrient digestibility was altered with boron addition to diets. Boron analysis of blood serum and fecal samples showed non-significant changes, except higher serum concentration of boron in YC compared to PC. It can be concluded that tested dosage of boron was not enough to considerably modify rumen fermentation characteristics in yearling rams. Better modulation of rumen fermentative characteristics might be possible when boron is supplemented with yeast or liquid humate, however, this possibility should be verified in the large-scale experiment.

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Author Biography
MS Ramay, Ankara University

Teaching Assistant

Department of Animal Nutrition and Nutritional Diseases

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