Effects of &lt;i&gt;Saccharomyces cerevisiae&lt;/i&gt; Supplementation and Anhydrous Ammonia Treatment of Wheat Straw on &lt;i&gt;In-situ&lt;/i&gt; Degradability and, Rumen Fermentation and Growth Performance of Yearling Lambs

Cömert, Muazzez; Şayan, Yılmaz; Özelçam, Hülya; Baykal, Gülşah Yeğenoğlu

doi:10.5713/ajas.14.0757

Cited by 12 publications

(13 citation statements)

References 18 publications

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“…In the current study, ADFI, NWG, ADG and FCR were improved when the lambs were fed ammoniated maize stover at lower levels (up to 20%) compared with the control and AMS40 diets. This is could possibility be due to an improved degradability of water-insoluble fraction, voluntary ME intake, voluntary CP intake and ultimately growth performance in the lambs fed the ammoniated straws, as observed in other studies (Cömert et al 2015). The high growth performance data in lambs receiving diets with lower ammoniated maize stover inclusions is also consistent with the findings by Dayani et al (2011) along with Mudgal et al (2018) who reported an improved growth performance of animals receiving ammoniated roughagebased complete rations.…”

Section: Discussionsupporting

confidence: 87%

The effect of ammoniated maize stover inclusion in diets on growth performance, physiological characteristics and meat quality in lambs

Chelopo

Marume

2022

Anim. Prod. Sci.

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The exploration of alternative feed sources for lambs to offset the expensive conventional ingredients is imperative. Aims. To determine whether the inclusion of graded levels of ammoniated maize stover in lamb diets will positively influence growth performance, health and meat quality. Methods. Thirty-two female meatmaster lambs aged 5-6 months (eight lambs per treatment) were fed isonitrogenous and isoenergetic diets containing 0%, 10%, 20% and 40% ammoniated maize stover (AMS) over a period of 7 weeks. Key results. The lambs fed the AMS10 diet had a greater feed intake than did those fed AMS0, with lambs fed AMS20 and AMS40 not different from each other. Lambs fed on AMS10 and AMS20 grew faster than those fed on AMS40, but AMS0-fed lambs did not differ from any of the other groups. Similarly, feed conversion ratio (FCR, 5.25) was greater for lambs fed on AMS40 than for those on either AMS10 or AMS20, but those on AMS0 did not differ from the other groups. There were no significant differences in any of the mean values for haematological parameters; however, haematocrit was below the normal range for healthy lambs in all dietary treatments. Inclusion of AMS had no effect on the slaughter weight of lambs or any carcass characteristics apart from the dressing percentage. The lambs fed the AMS20 diets had a significantly higher dressing percentage than did all other groups. Ultimate pH (pH u ) values were significantly higher on lambs fed on AMS40 than for all other groups. pH u values among AMS0, AMS10 and AMS20 were similar. Shear force for lambs on AMS40 diet was less than that for AMS0, but neither differed significantly from the other two groups. Conclusions. Observations from the study showed that ammoniated maize stover may be included into lamb diets at least at 20% without adverse effects on growth performance, the health, and meat-quality characteristics of the lambs. Implications. Ammoniated maize stover can therefore be a cheaper feed source for lambs in feedlot systems as it primarily replaces lucerne and maize grain.

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Section: Discussionsupporting

confidence: 87%

The effect of ammoniated maize stover inclusion in diets on growth performance, physiological characteristics and meat quality in lambs

Chelopo

Marume

2022

Anim. Prod. Sci.

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“…The productive response of lambs to Saccharomyces cerevisiae supplementation varies depending on the level of yeast inclusion. Obeidat (2017) reported that 0.5 g Saccharomyces cerevisiae did not affect daily weight gain, while Cömert et al (2015) observed increases in daily weight gain with 4 g of yeast, as shown in our study.…”

Section: Discussionsupporting

confidence: 79%

Performance and carcass characteristics of lambs fed diets supplemented with different levels of Saccharomyces cerevisiae

Gloria-Trujillo¹,

Hernández-Sánchez²,

Crosby-Galván³

et al. 2022

Revista Brasileira De Zootecnia

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The objective of this study was to evaluate the productive performance, apparent digestibility, and carcass and longissimus dorsi muscle characteristics of lambs fed diets supplemented with four levels of Saccharomyces cerevisiae. Thirty-two male Hampshire lambs (25.82±1.95 kg body weight) were distributed in four treatments: basal diet (20:80, forage:concentrate), and the inclusion of 0, 3, 5, and 10 g animal −1 d −1 Saccharomyces cerevisiae. The variables evaluated were dry matter intake, daily weight gain, feed conversion, apparent digestibility, dorsal fat thickness, longissimus dorsi muscle area, and physicochemical characteristics of carcass and muscle. We used a completely randomized design and orthogonal polynomials to test the linear and quadratic effects of the inclusion levels of the yeast. Saccharomyces cerevisiae showed a quadratic effect on lamb performance. Dry matter intake decreased with yeast in response to a better feed conversion and body weight gain; however, at the highest Saccharomyces cerevisiae dose, daily weight gain and final weight were lower than with the basal diet treatment. Saccharomyces cerevisiae did not affect apparent digestibility or carcass and muscle physicochemical characteristics. Supplementation with 3 and 5 g d −1 Saccharomyces cerevisiae improves productive performance of lambs fed high concentrate diets without affecting the physicochemical characteristics of the carcass or muscle.

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“…The increase in VFA concentrations in this present study indicates enhanced microbial activity in terms of fermentation and agrees with previous findings regarding total bacteria populations [ 2 , 4 ]. The decrease in the ruminal NH 3 -N concentration seemed to be due to increased absorption of NH 3 -N into microbial proteins, probably because of the stimulation of microbial activity by S. cerevisiae [ 38 , 39 ].…”

Section: Resultsmentioning

confidence: 99%

Roughage to Concentrate Ratio and Saccharomyces cerevisiae Inclusion Could Modulate Feed Digestion and In Vitro Ruminal Fermentation

Phesatcha

Wanapat

Cherdthong

2020

Veterinary Sciences

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The objective of this research was to investigate the effect of the roughage-to-concentrate (R:C) ratio and the addition of live yeast (LY) on ruminal fermentation characteristics and methane (CH4) production. The experimental design was randomly allocated according to a completely randomized design in a 4 × 4 factorial arrangement. The first factor was four rations of R:C at 80:20, 60:40, 40:60, and 20:80, and the second factor was an additional four doses of Saccharomyces cerevisiae (live yeast; LY) at 0, 2.0 × 106, 4.0 × 106, and 6.0 × 106 colony-forming unit (cfu), respectively. For the in vitro method, during the incubation, the gas production was noted at 0, 1, 2, 4, 6, 8, 10, 12, 18, 24, 48, 72, and 96 h. The rumen solution mixture was collected at 0, 4, 8, 12, and 24 h of incubating after inoculation. Cumulative gas production at 96 h was highest in the R:C ratio, at 20:80, while the addition of LY improves the kinetics and accumulation of gas (p > 0.05). Maximum in vitro dry matter digestibility (IVDMD) and in vitro organic matter digestibility (IVOMD) at 24 h after incubation were achieved at the R:C ratio 20:80 and the addition of LY at 6 × 106 cfu, which were greater than the control by 13.7% and 12.4%, respectively. Ruminal pH at 8 h after incubation decreased with an increased proportion of concentrates in the diet, whereas it was lowest when the R:C ratio was at 20:80. Increasing the proportion of a concentrate diet increased total volatile fatty acid (TVFA) and propionic acid (C3), whereas the acetic acid (C2) and C2-to-C3 ratios decreased (p < 0.05). TVFA and C3 increased with the addition of LY at 6 × 106 cfu, which was greater than the control by 11.5% and 17.2%, respectively. No interaction effect was observed between the R:C ratio and LY on the CH4 concentration. The calculated ruminal CH4 production decreased with the increasing proportion of concentrates in the diet, particularly the R:C ratio at 20:80. The CH4 production for LY addition at 6 × 106 cfu was lower than the control treatment by 17.2%. Moreover, the greatest populations of bacteria, protozoa, and fungi at 8 h after incubation were found with the addition of LY at 6 × 106 cfu, which were higher than the control by 19.0%, 20.7%, and 40.4%, respectively. In conclusion, a high ratio of roughage and the concentrate and addition of LY at 6.0 × 106 cfu of the total dietary substrate could improve rumen fermentation, improve feed digestibility, and reduce the CH4 production.

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Effects of <i>Saccharomyces cerevisiae</i> Supplementation and Anhydrous Ammonia Treatment of Wheat Straw on <i>In-situ</i> Degradability and, Rumen Fermentation and Growth Performance of Yearling Lambs

Cited by 12 publications

References 18 publications

The effect of ammoniated maize stover inclusion in diets on growth performance, physiological characteristics and meat quality in lambs

The effect of ammoniated maize stover inclusion in diets on growth performance, physiological characteristics and meat quality in lambs

Performance and carcass characteristics of lambs fed diets supplemented with different levels of Saccharomyces cerevisiae

Roughage to Concentrate Ratio and Saccharomyces cerevisiae Inclusion Could Modulate Feed Digestion and In Vitro Ruminal Fermentation

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