Influence of processing supplemental alfalfa on intake and digestion of dormant bluestem-range forage by steers

Lintzenich, B.A.; Vanzant, E.S.; Cochran, R.C.; Beaty, J.L.; Brandt, Robert; Jean, G

doi:10.2527/1995.7341187x

Cited by 28 publications

(25 citation statements)

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“…This is in contrast with the tabulated values, 7 which show an inverse relationship between acid detergent-insoluble protein and total CP for alfalfa hay. However, in accordance with our ®ndings, other researchers 3,20 reported no difference in acid detergent-insoluble nitrogen (average 60 g kg À1 CP) as total CP of alfalfa hay decreases from 201 to 168 g kg À1 (DM basis). Sun-cured pellets had a lower (P < 0.05) total true protein content than cubes (Table 2).…”

supporting

confidence: 79%

“…Similar NDF and ADF values for dehydrated pellets were reported by Lintzenich et al 3 Differences in cell wall content among the lucerne products were re¯ected in the non-structural carbohydrate level, which was highest (P < 0.05) for dehydrated pellets and lowest (P < 0.05) for sun-cured pellets ( Table 1).…”

supporting

confidence: 71%

“…Based on our results and those of Linteznich et al, 3 it could be suggested that differences in ruminal protein degradability among the three lucerne products tested in this study were likely to have resulted from differences in maturity stage rather than from processing. Other workers 17,18 also reported reduced ruminal CP degradability of lucerne with increasing maturity.…”

Section: Ruminal Nutrient Degradabilitymentioning

confidence: 46%

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Chemical composition and ruminal degradability of lucerne (Medicago sativa) products

2001

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A study was conducted to determine the chemical composition and in situ nutrient ruminal degradability of three lucerne products. These were dehydrated pellets, sun-cured pellets and cubes. Results of the chemical analysis showed that sun-cured pellets had the highest (P < 0.05) neutral and acid detergent ®bre as well as total carbohydrate levels, followed by cubes and dehydrated pellets respectively. Crude protein (CP) content was highest (P < 0.05) for dehydrated pellets (204.3 g kg ). Intermediately degradable CP (buffer-insoluble CP minus neutral detergent-insoluble CP) was the main protein fraction in the three products and was higher (P < 0.05) in cubes than in dehydrated and sun-cured pellets. Estimated net energy of lactation was highest (P < 0.05) for dehydrated pellets (5.9 MJ kg ). Results of the in situ experiment indicated that dehydrated pellets had higher (P < 0.05) ruminal protein degradability than sun-cured pellets and cubes. The estimated ruminal escape protein values for dehydrated pellets, sun-cured pellets and cubes were 361, 420 and 498 g kg À1 CP respectively. It was concluded that differences in chemical composition and ruminal degradability among the three lucerne products were mainly due to differences in stage of maturity. It was also concluded that the dehydration process failed to increase the ruminal escape protein value of dehydrated pellets relative to sun-cured pellets and cubes.

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supporting

confidence: 79%

supporting

confidence: 71%

Section: Ruminal Nutrient Degradabilitymentioning

confidence: 46%

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Chemical composition and ruminal degradability of lucerne (Medicago sativa) products

2001

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“…Intake and digestibility of low-quality, N-deficient forages can be increased using supplementation with browse foliage like Tithonia, Calliandra, Sesbania (Wambui et al 2006) and alfalfa (Lintzenich et al 1995) or with the addition of supplemental degradable intake protein (DIP; Köster et al 1996). DIP is considered to be the dietary component that is ''first limiting'' to the utilization of low-quality forage.…”

Section: Resultsmentioning

confidence: 99%

Effect of diet inclusion of Tithonia diversifolia on feed intake, digestibility and nitrogen balance in tropical sheep

et al. 2010

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Feed intake and digestibility were evaluated in sheep fed low quality Taiwan grass supplemented with Tithonia diversifolia. Four wether hair sheep were housed in metabolic cages and fed with either Control concentrate 20%, Tithonia 20, 35 or 50% in a Latin Square design. Adaptation and, feces and urine collection periods were 14 and 7 days, respectively. Feed intake was increased (P \ 0.01) from 58.5 in control to 86.1 g/kg 0.75 in sheep fed Tithonia. NDF intake and digestibility were affected by Tithonia level. Nitrogen intake increased linearly (P \ 0.01) with increase in feces and urine excretion. N retention was similar (P [ 0.1) among sheep fed Tithonia, but different (P \ 0.05) from control. Inclusion of Tithonia foliage at 20% of the DM diet of hair sheep improved their intake of low quality Taiwan grass and nitrogen retention. Higher levels of Tithonia in the diet, however, increase nitrogen loss in feces and urine.

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“…Protein is traditionally considered the limiting nutrient in western U.S. cow-calf systems (DelCurto et al, 2000), although energy is the primary dietary consideration for female development (Mass, 1987) and forages typically represent the main energy source for forage-fed cattle. Indeed, supplemental protein has been shown to improve digestibility and DMI of low-quality warm-season forages, resulting in increased energy utilization from the forage and cattle performance (DelCurto et al, 1990;Lintzenich et al, 1995). However, supplemental protein did not increase forage digestibility and DMI of low-quality cool-season forages (Bohnert et al, 2011a).…”

Section: Introductionmentioning

confidence: 99%

Supplementation based on protein or energy ingredients to beef cattle consuming low-quality cool-season forages: I. Forage disappearance parameters in rumen-fistulated steers and physiological responses in pregnant heifers1

Cappellozza

Cooke

Filho

et al. 2014

Journal of Animal Science

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Two experiments evaluated the influence of supplement composition on ruminal forage disappearance, performance, and physiological responses of Angus × Hereford cattle consuming a low-quality cool-season forage (8.7% CP and 57% TDN). In Exp. 1, 6 rumen-fistulated steers housed in individual pens were assigned to an incomplete 3 × 2 Latin square design containing 2 periods of 11 d each and the following treatments: 1) supplementation with soybean meal (PROT), 2) supplementation with a mixture of cracked corn, soybean meal, and urea (68:22:10 ratio, DM basis; ENER), or 3) no supplementation (CON). Steers were offered meadow foxtail (Alopecurus pratensis L.) hay for ad libitum consumption. Treatments were provided daily at 0.50 and 0.54% of shrunk BW/steer for PROT and ENER, respectively, to ensure that PROT and ENER intakes were isocaloric and isonitrogenous. No treatment effects were detected on rumen disappearance parameters of forage DM (P ≥ 0.33) and NDF (P ≥ 0.66). In Exp. 2, 35 pregnant heifers were ranked by initial BW on d -7 of the study, allocated into 12 feedlot pens (4 pens/treatment), and assigned to the same treatments and forage intake regimen as in Exp. 1 for 19 d. Treatments were fed once daily at 1.77 and 1.92 kg of DM/heifer for PROT and ENER, respectively, to achieve the same treatment intake as percent of initial BW used in Exp. 1 (0.50 and 0.54% for PROT and ENER, respectively). No treatment effects (P = 0.17) were detected on forage DMI. Total DMI was greater (P < 0.01) for PROT and ENER compared with CON and similar between PROT and ENER (P = 0.36). Accordingly, ADG was greater (P = 0.01) for PROT compared with CON, tended to be greater for ENER compared with CON (P = 0.08), and was similar between ENER and PROT (P = 0.28). Heifers receiving PROT and ENER had greater mean concentrations of plasma glucose (P = 0.03), insulin (P ≤ 0.09), IGF-I (P ≤ 0.04), and progesterone (P = 0.01) compared to CON, whereas ENER and PROT had similar concentrations of these variables (P ≥ 0.15). A treatment × hour interaction was detected (P < 0.01) for plasma urea N (PUN), given that PUN concentrations increased after supplementation for ENER and PROT (time effect, P < 0.01) but did not change for CON (time effect, P = 0.62). In conclusion, beef cattle consuming low-quality cool-season forages had similar ruminal forage disappearance and intake, performance, and physiological status if offered supplements based on soybean meal or corn at 0.5% of BW.

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Influence of processing supplemental alfalfa on intake and digestion of dormant bluestem-range forage by steers

Cited by 28 publications

References 0 publications

Chemical composition and ruminal degradability of lucerne (Medicago sativa) products

Chemical composition and ruminal degradability of lucerne (Medicago sativa) products

Effect of diet inclusion of Tithonia diversifolia on feed intake, digestibility and nitrogen balance in tropical sheep

Supplementation based on protein or energy ingredients to beef cattle consuming low-quality cool-season forages: I. Forage disappearance parameters in rumen-fistulated steers and physiological responses in pregnant heifers1

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