國立虎尾科技大學 |

Impact of Dried Distillers' Grains with Solubles Supplementation of Cattle While Grazing Bermudagrass on the Plant-Animal Interface.

Record Type:	Language materials, manuscript : Monograph/item
Title/Author:	Impact of Dried Distillers' Grains with Solubles Supplementation of Cattle While Grazing Bermudagrass on the Plant-Animal Interface./
Author:	Smith, William Brandon.
Description:	1 online resource (239 pages)
Notes:	Source: Dissertation Abstracts International, Volume: 79-08(E), Section: B.
Contained By:	Dissertation Abstracts International79-08B(E).
Subject:	Agronomy. -
Online resource:	click for full text (PQDT)
ISBN:	9780355789836

Impact of Dried Distillers' Grains with Solubles Supplementation of Cattle While Grazing Bermudagrass on the Plant-Animal Interface.
Smith, William Brandon.

Impact of Dried Distillers' Grains with Solubles Supplementation of Cattle While Grazing Bermudagrass on the Plant-Animal Interface. - 1 online resource (239 pages)

Source: Dissertation Abstracts International, Volume: 79-08(E), Section: B.

Thesis (Ph.D.)--Texas A&M University, 2017.

Includes bibliographical references

Dried distillers' grains with solubles (DDGS), a co-product of the fuel ethanol industry, has provided a source of supplement for livestock. This dissertation addressed the effects of DDGS supplementation with cattle grazing bermudagrass (Cynodon dactylon [L.] Pers.) pastures on performance, digestion, and digestive kinetics. The first objective of this study was to evaluate performance of stocker steers grazing 'Tifton 85' bermudagrass (TIF; Cynodon dactylon [L.] Pers. x C. nlemfuensis Vanderyst) when supplemented daily with varying rates of a DDGS supplement (SUPP; 0, 0.25, 0.5, or 1% BW). Steer ADG increased linearly (P < 0.01) as SUPP increased (0.61, 0.89, 0.96, and 1.10 kg/d for 0, 0.25, 0.5, and 1% BW SUPP). The second objective was to evaluate performance of steers grazing 'Coastal' bermudagrass (COS) with daily rates of SUPP (0, 0.25, or 1% BW). Steer ADG increased linearly (P < 0.01) as SUPP increased (0.67, 0.70, and 1.02 kg/d for 0, 0.25, and 1% BW SUPP). The third objective was to measure the effect of SUPP on subsequent feedlot and carcass traits. Compensatory gains likely occurred in the finishing phase for SUPP, resulting in decreasing feedlot ADG with increasing SUPP. The fourth objective of this study was to evaluate the effect of SUPP on in vitro gas production, digestibility, and methane production. Results indicated that DDGS may be supplemented to cattle to increase diet digestibility with a potential benefit of reduced methane production. This effect was greater for COS than for TIF. The final objective of this study was to evaluate the ruminal digestion kinetics of TIF as affected by month of year and SUPP. Forage of TIF from later months (August and October) have altered cell wall structural (increased cellulose and lignin) than early-season TIF (June). Increases in SUPP might have created an inhospitable rumen environment for fiber-degrading bacteria. Overall, supplementation of steers with DDGS may be an effective management strategy when bermudagrass forage mass was more abundant to allow for increased selective grazing. Supplementation with DDGS may result in increased diet digestibility and decreased methane production.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2018

Mode of access: World Wide Web

ISBN: 9780355789836Subjects--Topical Terms:

1027735
Agronomy.
Index Terms--Genre/Form:

554714
Electronic books.

Impact of Dried Distillers' Grains with Solubles Supplementation of Cattle While Grazing Bermudagrass on the Plant-Animal Interface.
LDR:03525ntm a2200349Ki 4500 001 917451
005 20181012133446.5
006 m o u
007 cr mn||||a|a||
008 190606s2017 xx obm 000 0 eng d
020 $a 9780355789836
035 $a (MiAaPQ)AAI10800926
035 $a (MiAaPQ)0803vireo:19113Smith
035 $a AAI10800926
040 $a MiAaPQ $b eng $c MiAaPQ $d NTU
100 1 $a Smith, William Brandon. $3 1191502
245 1 0 $a Impact of Dried Distillers' Grains with Solubles Supplementation of Cattle While Grazing Bermudagrass on the Plant-Animal Interface.
264 0 $c 2017
300 $a 1 online resource (239 pages)
336 $a text $b txt $2 rdacontent
337 $a computer $b c $2 rdamedia
338 $a online resource $b cr $2 rdacarrier
500 $a Source: Dissertation Abstracts International, Volume: 79-08(E), Section: B.
500 $a Advisers: Francis M. Rouquette; Luis O. Tedeschi.
502 $a Thesis (Ph.D.)--Texas A&M University, 2017.
504 $a Includes bibliographical references
520 $a Dried distillers' grains with solubles (DDGS), a co-product of the fuel ethanol industry, has provided a source of supplement for livestock. This dissertation addressed the effects of DDGS supplementation with cattle grazing bermudagrass (Cynodon dactylon [L.] Pers.) pastures on performance, digestion, and digestive kinetics. The first objective of this study was to evaluate performance of stocker steers grazing 'Tifton 85' bermudagrass (TIF; Cynodon dactylon [L.] Pers. x C. nlemfuensis Vanderyst) when supplemented daily with varying rates of a DDGS supplement (SUPP; 0, 0.25, 0.5, or 1% BW). Steer ADG increased linearly (P < 0.01) as SUPP increased (0.61, 0.89, 0.96, and 1.10 kg/d for 0, 0.25, 0.5, and 1% BW SUPP). The second objective was to evaluate performance of steers grazing 'Coastal' bermudagrass (COS) with daily rates of SUPP (0, 0.25, or 1% BW). Steer ADG increased linearly (P < 0.01) as SUPP increased (0.67, 0.70, and 1.02 kg/d for 0, 0.25, and 1% BW SUPP). The third objective was to measure the effect of SUPP on subsequent feedlot and carcass traits. Compensatory gains likely occurred in the finishing phase for SUPP, resulting in decreasing feedlot ADG with increasing SUPP. The fourth objective of this study was to evaluate the effect of SUPP on in vitro gas production, digestibility, and methane production. Results indicated that DDGS may be supplemented to cattle to increase diet digestibility with a potential benefit of reduced methane production. This effect was greater for COS than for TIF. The final objective of this study was to evaluate the ruminal digestion kinetics of TIF as affected by month of year and SUPP. Forage of TIF from later months (August and October) have altered cell wall structural (increased cellulose and lignin) than early-season TIF (June). Increases in SUPP might have created an inhospitable rumen environment for fiber-degrading bacteria. Overall, supplementation of steers with DDGS may be an effective management strategy when bermudagrass forage mass was more abundant to allow for increased selective grazing. Supplementation with DDGS may result in increased diet digestibility and decreased methane production.
533 $a Electronic reproduction. $b Ann Arbor, Mich. : $c ProQuest, $d 2018
538 $a Mode of access: World Wide Web
650 4 $a Agronomy. $3 1027735
650 4 $a Animal sciences. $3 1178863
650 4 $a Statistics. $3 556824
655 7 $a Electronic books. $2 local $3 554714
690 $a 0285
690 $a 0475
690 $a 0463
710 2 $a ProQuest Information and Learning Co. $3 1178819
710 2 $a Texas A&M University. $b Soil and Crop Sciences. $3 1191503
773 0 $t Dissertation Abstracts International $g 79-08B(E).
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10800926 $z click for full text (PQDT)