Effect of thyme essential oil supplementation on feed intake, apparent digestibility, rumen fermentation, blood parameters and in vitro methane yield of Nellore cattle

2020 ◽  
pp. 104349
Author(s):  
Edivilson Silva Castro Filho ◽  
Luiz Carlos Roma Júnior ◽  
Jane Maria Bertocco Ezequiel ◽  
Márcia Saladini Vieira Salles ◽  
Marco Túlio Costa Almeida ◽  
...  
Keyword(s):  
Essential Oil ◽  
Feed Intake ◽  
Blood Parameters ◽  
Rumen Fermentation ◽  
Methane Yield ◽  
Apparent Digestibility ◽  
Thyme Essential Oil ◽  
Nellore Cattle

scholarly journals Effect of essential and vegetable oil blend supplementation on animal performance, feed intake, rumen fermentation and rumen microbial populations of crossbred steers finished in a pasture system

2020 ◽  
Vol 9 (9) ◽  
pp. e738998057
Author(s):  
Camila Mottin ◽  
Francisco Augusto Ricci Catalano ◽  
Daniele Maggioni Chefer ◽  
Fabiana Lana de Araújo ◽  
Venício Macedo Carvalho ◽  
...  
Keyword(s):  
Essential Oil ◽  
Feed Intake ◽  
Crude Protein ◽  
Rumen Fermentation ◽  
Livestock Grazing ◽  
Neutral Detergent Fiber ◽  
Microbial Populations ◽  
Animal Performance ◽  
Oil Blends ◽  
Oil Blend

Recent years have seen a general increase in consumer concern regarding the profile of additives in animal feed and food sources, prompting the industry to study essential oil blends that have been promoted to replace synthetic products. This study evaluated the effect of essential oil blends supplementation on animal performance, feed intake, rumen fermentation and rumen microbial populations in crossbred steers finished in a pasture system. A total of 40 steers (½ Bons Mara vs. ½ Nellore) with a mean age of 20 ± 2.0 months and a mean body weight of 416.9 ± 5.56 kg were distributed in a completely randomized design with five diets and eight replications per diet. The five experimental diets were: CONT – basal diet, and oil blend inclusion in dosages of 1500, 3000, 4500 or 6000 mg/animal/d. Animal performance was similar among diets. The forage intake, crude protein, neutral detergent fiber, ethereal extract, non-fibrous carbohydrates, and the digestibility of crude protein, neutral detergent fiber, and non-fibrous carbohydrates were greater when essential oil blends were fed to steers. There was an increase in the concentrations of rumen ammonia nitrogen, and propionic and isovaleric volatile fatty acids when essential oil blends were used. The microbiological population of the rumen was similar among the five diets. Our results suggest that the inclusion of doses above 1500 mg/animal/ is high for livestock grazing on temperate pasture, further studies are needed to identify a promising dose to replace antimicrobial additives.

scholarly journals Effects of Thyme Essential Oil on Performance, Some Blood Parameters and Ileal Microflora of Japanese Quail

2012 ◽  
Vol 49 (2) ◽  
pp. 106-110 ◽  
Author(s):  
Vahid Khaksar ◽  
Marinus van Krimpen ◽  
Hamideh Hashemipour ◽  
Mohammad Pilevar
Keyword(s):  
Essential Oil ◽  
Japanese Quail ◽  
Blood Parameters ◽  
Thyme Essential Oil

scholarly journals Essential oil mixture on rumen fermentation and microbial community – an in vitro study

2019 ◽  
Vol 32 (6) ◽  
pp. 808-814 ◽  
Author(s):  
Hanbeen Kim ◽  
Eunsang Jung ◽  
Hyo Gun Lee ◽  
Byeongwoo Kim ◽  
Seongkeun Cho ◽  
...  
Keyword(s):  
Microbial Community ◽  
Essential Oil ◽  
In Vitro Study ◽  
Rumen Fermentation ◽  
Vitro Study

scholarly journals Dose-response effects of sage (Salvia officinalis) and yarrow (Achillea millefolium) essential oils on rumen fermentation in vitro

2018 ◽  
Vol 18 (1) ◽  
pp. 125-142
Author(s):  
Mina Kahvand ◽  
Mostafa Malecky
Keyword(s):  
Essential Oil ◽  
Dry Matter ◽  
Volatile Fatty Acids ◽  
Dose Range ◽  
Ammonia Concentration ◽  
Rumen Fermentation ◽  
Gas Production ◽  
Total Volatile ◽  
Alpha Pinene

Abstract This study aimed at determining the chemical composition of sage essential oil (SEO) and yarrow essential oil (YEO), and investigate in vitro their impacts on gas production kinetics, ruminal digestibility and fermentation, and rumen methanogenesis at different dosages (0, 250, 500 and 750 mg L-1 for SEO; and 0, 250, 500, 750 and 1000 mg L−1 for YEO). Alpha-pinene and 1,8 cineol were two major constituents of both SEO and YEO. Both SEO and YEO had a linear and quadratic effect on asymptotic gas production (P<0.05). The gas production rate increased linearly with SEO and curve-linearly with YEO dosages (P<0.05). In vitro degradability of dry matter and organic matter decreased only by YEO. The partitioning factor (PF) and the microbial biomass (MB) decreased and increased linearly with YEO and SEO dosages, respectively (P<0.05). Total volatile fatty acids (VFA ) were not affected by SEO, but decreased in a linear and quadratic manner with YEO dosage (P<0.05). The VFA pattern was modified in a linear and quadratic manner by both SEO and YEO (P<0.05). Ammonia concentration increased linearly only with YEO increasing doses. The methane to total gas (TG) ratio decreased quadratically only by SEO with reductions of 6.7, 13 and 4.2% at the doses of 250, 500 and 750 mg L−1, respectively. These results revealed that SEO modifies the rumen fermentation positively towards producing more MB and less methane in the dose range of 0-750 mg L−1, however, YEO adversely affected the rumen fermentation at all the tested doses.

Effects of supplementing low-quality hay with groundnut foliage and cassava tops on feed intake, apparent digestibility and rumen fermentation in crossbred cattle

2019 ◽  
Vol 59 (9) ◽  
pp. 1660 ◽  
Author(s):  
Pok Samkol ◽  
Keo Sath ◽  
Mikaela Patel ◽  
Mom Seng ◽  
Kjell Holtenius
Keyword(s):  
Organic Matter ◽  
Feed Intake ◽  
Volatile Fatty Acids ◽  
Latin Square ◽  
Basal Diet ◽  
Rumen Fermentation ◽  
Apparent Digestibility ◽  
Crossbred Cattle ◽  
Manihot Esculenta Crantz ◽  
Arachis Hypogea

Four adult crossbred cattle, fitted with rumen fistula in the dorsal sac, were randomly allocated to four treatments in a 4 × 4 Latin-square design to study the effects of supplementing sun-dried groundnut (Arachis hypogea L.) foliage (DGF) and sun-dried cassava (Manihot esculenta, Crantz) tops (DCT) on feed intake, apparent digestibility and rumen fermentation. All animals were fed a basal diet of rice straw ad libitum and para grass (Brachiaria mutica) at 1% of liveweight (LW). The four experimental diets were as follows: (1) control, basal diet without supplement; (2) DGF, basal diet + DGF; (3) DCT, basal diet + DCT; and (4) DGF+DCT, basal diet + DGF + DCT. The supplementary feeds were fed to the level of 2 g crude protein (CP)/kg LW in Diets 2 and 3 and 1 g CP/kg LW of each feed in Diet 4. The results indicated that total intake of dry matter (DM), organic matter and CP increased with DGF and DGF+DCT diets, while neutral detergent fibre (NDF) intake was highest in the DGF diet. Digestibilities of DM, organic matter, CP and NDF were improved in DGF and DGF+DCT treatments. However, the diet with DCT supplement had lowest CP and NDF digestibility. Ruminal NH3-N and total volatile fatty acids increased in all diets with supplements, but ruminal pH, volatile fatty acid profile and in sacco losses of DM, CP and NDF of sun-dried para grass in the rumen did not differ among the treatments.

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