Prediction of the day matter digestibility of tropical grasses using a pepsin-cellulase assay

Goto, Ichiro; Minson, D. J.

doi:10.1016/0377-8401(77)90028-1

Cited by 99 publications

(38 citation statements)

References 13 publications

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“…After dried samples of DL Napiergrass and IR were ground by mill to pass through a 2 mm mesh, IVDMD of the herbage parts (LB and ST in DL Napiergrass) and whole herbage in IR were measured in duplicate by a pepsin-cellulase digestion method [51] using an in vitro incubator (Model: ANKOM DAISY II, ANKOM Technology, Macedon, NY, USA). The TN and TC concentrations of herbage parts and IR were determined in duplicate by an N and C determination unit (Sumigraph NC-220F, Sumika Chemical Analysis Service, Ltd.), and crude protein (CP) concentration was calculated by N concentration multiplied by 6.25.…”

Section: Determination Of Herbage Qualitymentioning

confidence: 99%

Effect of Repeated Application of Manure on Herbage Yield, Quality and Wintering Ability during Cropping of Dwarf Napiergrass with Italian Ryegrass in Hilly Southern Kyushu, Japan

et al. 2018

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Abstract:The effects of two levels of manure application (184 and 275 kg N ha −1 year −1 ) on herbage yield, quality, and wintering ability during the cropping of a dwarf genotype of late-heading (DL) Napiergrass (Pennisetum purpureum Schumach) oversown with Italian ryegrass (IR; Lolium multiflorum Lam.) were examined and compared with chemical fertilizer application (234 kg N ha −1 year −1 ) for 4 years to determine a sustainable and environmentally harmonized herbage production in a hilly area (340 m above sea level). No significant (p > 0.05) differences in growth attributes of plant height, tiller density, percentage of leaf blade, or dry matter yield appeared in either DL Napiergrass or IR among moderate levels (184-275 kg N ha −1 year −1 ) of manure and chemical fertilizer treatments. IR exhibited no significant detrimental effect on spring regrowth of DL Napiergrass, which showed a high wintering ability in all treatments. In vitro dry matter digestibility of DL Napiergrass tended to increase with increasing manure application, especially at the first defoliation in the first three years. Manure application improved soil chemical properties and total nitrogen and carbon content. The results suggested that the lower rate of manure application of 184 kg nitrogen ha −1 year −1 would be suitable, which would be a good substitute for chemical fertilizer application with an equilibrium nitrogen budget for sustainable DL Napiergrass and IR cropping in the hilly region of southern Kyushu.

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Section: Determination Of Herbage Qualitymentioning

confidence: 99%

Effect of Repeated Application of Manure on Herbage Yield, Quality and Wintering Ability during Cropping of Dwarf Napiergrass with Italian Ryegrass in Hilly Southern Kyushu, Japan

et al. 2018

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“…Data collections between May and early September 2010 were not carried out because of the outbreak of foot-and-mouth disease in Miyazaki Prefecture. (Goto and Minson, 1977). N concentration was determined using an N/C analyzer (Sumigraph NC-220 F; Sumika Chemical Analysis Service, Tokyo, Japan).…”

Section: Methodsmentioning

confidence: 99%

Seasonal and interannual variations in feeding station behavior of cattle: effects of sward and meteorological conditions

Hirata

Matsumoto

Izumi

et al. 2015

Animal

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A feeding station is the area of forage a grazing animal can reach without moving its forefeet. Grazing behavior can be divided into residence within feeding stations (with bites as benefits) and movement between feeding stations (with steps as costs). However, relatively little information has been reported on how grazing animals modify their feeding station behavior seasonally and interannually in response to varying environmental conditions. The feeding station behavior of beef cows (Japanese Black) stocked on a tropical grass pasture (bahiagrass dominant) was monitored for 4 years (2010 to 2013) in order to investigate the association of feeding station behavior with meteorological and sward conditions across the seasons and years. Mean air temperature during stocking often exceeded 30°C during summer months. A severe summer drought in 2013 decreased herbage mass and sward height of the pasture and increased nitrogen concentration of herbage from summer to autumn. A markedly high feeding station number per unit foraging time, low bite numbers per feeding station and a low bite rate were observed in summer 2013 compared with the other seasons and years. Bite number per feeding station was explained by a multiple regression equation, where sward height and dry matter digestibility of herbage had a positive effect, whereas air temperature during stocking had a negative effect (R 2 = 0.658, P < 0.01). Feeding station number per minute was negatively correlated with bite number per feeding station (r = -0.838, P < 0.001). It was interpreted that cows modified bite number per feeding station in response to the sward and meteorological conditions, and this largely determined the number of feeding stations the animals visited per minute. The results indicate potential value of bite number per feeding station as an indicator of daily intake in grazing animals, and an opportunity for livestock and pasture managers to control feeding station behavior of animals through managements (e.g. fertilizer application, manipulation of stocking intensity and stocking time within the day).Keywords: cattle, grazing, bite, step, sward condition ImplicationsThis 4-year study is the first work investigating how grazing cattle modify their feeding station behavior seasonally and interannually in response to varying meteorological and sward conditions. Bite number per feeding station was affected positively by the sward height and dry matter digestibility of the pasture, and was affected negatively by the air temperature during stocking, as the major variable responsible for the seasonal and interannual variation. There is an opportunity for livestock and pasture managers to control feeding station behavior by animals through managements such as fertilizer application and manipulation of stocking intensity and stocking time within the day.

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“…They were then analyzed for in vitro dry matter digestibility (IVDMD), crude protein (CP), and structural carbohydrates such as neutral detergent fiber (NDF), acid detergent fiber (ADF), and acid detergent lignin (ADL) by detergent methods (Van Soest, 1994). IVDMD was measured in the case of duplication by pepsin-cellulose digestion method (Goto & Minson, 1977) …”

Section: Chemical Analysis Of Herbagementioning

confidence: 99%

Genotypic differences in forage quantity and quality of canopy strata in napiergrass (Pennisetum purpureum Schumach)

Ishii¹,

Kadwal²,

Iki³

et al. 2017

JEBAS

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To assess grazing suitability of napiergrass genotypes across real dwarf Taiwan 7734 (7734), semidwarf (DL) and normal-tall Merkeron (ME), yield and quality attributes were determined in canopy strata. Plant densities of 7734, DL, and ME were 4, 2, and 1 plants m -2 , respectively, and relative light intensity (RLI) and dry weight of plant fractions were obtained by stratified clipping at the first and second cuttings in early September and late November, respectively. Results of this study revealed that plant height was in the order of ME (199 cm), followed by DL (128 cm) and 7734 (88 cm) at the first cutting, and 7734 tended to have higher tiller density, dry matter yield, and leaf area index than DL and ME at both cuttings. Canopy RLI in 7734 tended to decrease higher with strata than in DL and ME, which was corresponded with the lowest K in 7734, followed by DL and ME at both cuttings. Genotype 7734 had the highest digestibility and crude protein concentration, and lowest structural carbohydrate concentrations across genotypes, which would be favorable to grazing use by breeding beef cows.

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Prediction of the day matter digestibility of tropical grasses using a pepsin-cellulase assay

Cited by 99 publications

References 13 publications

Effect of Repeated Application of Manure on Herbage Yield, Quality and Wintering Ability during Cropping of Dwarf Napiergrass with Italian Ryegrass in Hilly Southern Kyushu, Japan

Effect of Repeated Application of Manure on Herbage Yield, Quality and Wintering Ability during Cropping of Dwarf Napiergrass with Italian Ryegrass in Hilly Southern Kyushu, Japan

Seasonal and interannual variations in feeding station behavior of cattle: effects of sward and meteorological conditions

Genotypic differences in forage quantity and quality of canopy strata in napiergrass (Pennisetum purpureum Schumach)

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