Digestion in the Steer, Goat, and Artificial Rumen as Measures of Forage Nutritive Value

Baumgardt, B.R.; Byer, W. J.; Jumah, H. F.; Krueger, C. R.

doi:10.3168/jds.s0022-0302(64)88610-0

Cited by 15 publications

(7 citation statements)

References 6 publications

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“…In guinea-and merkergrass hays, Oporta-Tellez (24) did not find significant differences between goats, sheep, and steers in nutrient digestibility and concluded that goats could substitute fo r either sheep or steers in digestion trials. Similar conclusions were drawn by Baumgardt et al (5) with goats and sheep and by Jones et al 1 7, with goats a nd steers. Nevert heless, little is known about the comparative digestibilities of goats and other ruminants (5,9).…”

Section: Digestion Coefficient Ssupporting

confidence: 85%

“…Similar conclusions were drawn by Baumgardt et al (5) with goats and sheep and by Jones et al 1 7, with goats a nd steers. Nevert heless, little is known about the comparative digestibilities of goats and other ruminants (5,9). It is concluded th at pangolagrass DMI was greater than that of stargrass in goats and steers, that there was a tendency fo r lower nutritive value with advance in hay age , that goats may not necessarily substitute for steers in digestion trials and that L, but not Si, tends to be a valid mar ker fo r determining digestibility.…”

Section: Digestion Coefficient Ssupporting

confidence: 85%

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Voluntary Intake, Chemical Composition, and Nutrient Digestibility of Pangolagrass and Stargrass Hays

Gutiérrez-Vargas¹,

Arroyo-Aguilú²,

Ramírez-Ortiz³

1969

JAUPR

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Pangolagrass (Digitaria decumbens) and stargrass (Cynodon nlemfuensis) harvested at 30, 45, and 60 days and made in to hay, were fed to four castrated male ruminants (goats and steers) in individual digestion stalls. The grasses were fertilized at the rate of 4,480 kg/ha/yr with 15-5-10, harvested, sun-dried for 2 days and cut in 3- to 6-cm pieces. Each experimental period lasted 21 days, divided into a 14-day preliminary feed ing period and a 7-day collection period. Each hay was offered at a level of 90% intake, as determined in the preliminary period. Hays, offered and refused, and feces were weighed and sampled daily. Representative samples were analyzed for dry matter, crude protein, neutral-detergent fiber, acid-detergent fiber, cellulose, lignin, and silica. Hemicellulose was determined as the difference between neutral-detergent fiber and acid-detergent fiber. Apparent digestion coefficients for each fraction were calculated on all hays and all ruminants. Pangolagrass dry-matter intake was significantly (P < .01) greater than that of stargrass hay by both goats and steers. No significant differences in dry-matter intake were obtained between hay ages of 30, 45, and 60 days. Goats had a higher dry-matter intake (P < .01) than steers. Significant differences were obtained between hays in neutral-detergent fiber (P < .01), hemicellulose (P < .01), and cellulose (P < .05) contents and between hay ages in crude protein (P < .05), cellulose (P < .01), lignin (P < .05), and silica (P < .01) contents. For digestibilities, significant differences were obtained between hays in dry matter (P < .05), neutral-detergent fiber (P < 05), and cellulose (P < .01); between hay ages in lignin (P < .01) and silica (P < .01); and between ruminants in dry matter (P < .01), neutral-detergent fiber (P < .01), acid-detergent fiber (P < .01), hemicellulose (P < .01), and cellulose (P < .01). Goats may not necessarily substitute for steers in digestion trials; and lignin, but not silica, tends to be a valid marker for determining digestibility.

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Section: Digestion Coefficient Ssupporting

confidence: 85%

Section: Digestion Coefficient Ssupporting

confidence: 85%

Voluntary Intake, Chemical Composition, and Nutrient Digestibility of Pangolagrass and Stargrass Hays

Gutiérrez-Vargas¹,

Arroyo-Aguilú²,

Ramírez-Ortiz³

1969

JAUPR

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“…The hays were fed in long form to four c:1strated male Saanen dairy goats in four total collection digestion trials. The validity and usefulness of using goats for forage evaluation has been reported (Baumgardt et a!., 1964). CoLcction period was 7 days with a 10-day preliminary period.…”

Section: Methodsmentioning

confidence: 99%

Chemical Composition and Nutritive Value of Four Grass Hays and Their Component Parts¹

Krueger¹,

Hamilton²,

Scholl³

et al. 1969

Agronomy Journal

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Astract Four first‐growth forages, ‘Sterling’ orchardgrass (Dactylis glomerata L.), ‘Canada common’ and ‘Sac’ smooth bromegrass (Bromus inermis Leyss.), and ‘Climax’ timothy (Phleum pratense L.) were harvested at approximately 50% inflorescence emergence, artificially dried, and fed to dairy goats in total collection digestion trials. Canada common and Sac bromegrass and Climax timothy were separated into headed and nonheaded tillers. Headed tillers were fractionated into an inflorescence portion and by internode into leaf blade, leaf sheath, and stem portions. Nonheaded tillers were divided into leaf blade, leaf sheath, and stem fractions. Sterling orchardgrass was higher than Canada common and Sac bromegrass in the apparent digestibility of dry matter, crude protein, and acid‐detergent fiber; however, there was no difference in dry matter intake. Digestibilities of the two bromegrass varieties were not different. Climax timothy was lowest in digestibility and intake. Top portions of the headed tillers were lower in acid‐detergent fiber and lignin and higher in Kjeldahl nitrogen and in vitro dry matter digestibility than their corresponding basal fractions. Leaf blade, leaf sheath, and stem portions of Canada common bromegrass were generally highest in Kjeldahl nitrogen and in vitro dry matter digestibility and lowest in acid‐detergent fiber and lignin. Sac bromegrass components were intermediate and Climax timothy fractions were lowest in quality. Leaf blades of both headed and nonheaded tillers were generally lowest in acid‐detergent fiber and lignin and highest in Kjeldahl nitrogen and in vitro dry matter digestibility. The reverse was true of the leaf sheaths, while the stems were intermediate.

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“…The digestibility and utilization of forage are generally considered to be similar in cattle, sheep and goats (4,7 ) . flowever, the voluntary intake of coarse roughage (20) (roughages fed in the long or chopped form) per unit of metabolic sizehas been judged tobe l5Vo greater by cattle than by sheep (1).…”

Section: Introductionmentioning

confidence: 99%

FEEDING VALUE OF FORAGE AS FED TO STEERS AND ESTIMATED BY IN VITRO DIGESTION

Troelsen¹,

Beacom²

1970

Can. J. Anim. Sci.

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Digestion in the Steer, Goat, and Artificial Rumen as Measures of Forage Nutritive Value

Cited by 15 publications

References 6 publications

Voluntary Intake, Chemical Composition, and Nutrient Digestibility of Pangolagrass and Stargrass Hays

Voluntary Intake, Chemical Composition, and Nutrient Digestibility of Pangolagrass and Stargrass Hays

Chemical Composition and Nutritive Value of Four Grass Hays and Their Component Parts¹

FEEDING VALUE OF FORAGE AS FED TO STEERS AND ESTIMATED BY IN VITRO DIGESTION

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Digestion in the Steer, Goat, and Artificial Rumen as Measures of Forage Nutritive Value

Cited by 15 publications

References 6 publications

Voluntary Intake, Chemical Composition, and Nutrient Digestibility of Pangolagrass and Stargrass Hays

Voluntary Intake, Chemical Composition, and Nutrient Digestibility of Pangolagrass and Stargrass Hays

Chemical Composition and Nutritive Value of Four Grass Hays and Their Component Parts1

FEEDING VALUE OF FORAGE AS FED TO STEERS AND ESTIMATED BY IN VITRO DIGESTION

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Chemical Composition and Nutritive Value of Four Grass Hays and Their Component Parts¹