Effects of Forage System on Beef Cow-Calf Productivity

Bagley, C. P.; Carpenter, John C.; Feazel, J. I.; Hembry, F. G.; Huffman, D. C.; Koonce, K. L.

doi:10.2527/jas1987.643678x

Cited by 17 publications

(19 citation statements)

References 10 publications

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“…Cereal forages of small grain are a major crop in many parts of the world, and their importance is increasing because of their significant economic and environmental benefits (Braunwart et al 2001). Small grain cereals are used for forage at all stages of growth, from the grazing of small plants early in the growing season, to harvest of mature plants for hay at the end of the season (Bagley et al 1987). Oats (Avena sativa L.) have historically been a widely used food and forage crop all over the world (Moreira 1989;Zhang et al 1998;Wu 2007).…”

Section: Introductionmentioning

confidence: 99%

Chemical composition,in vitrodigestibility and kinetics of fermentation of whole-crop forage from 18 different varieties of oat (Avena sativaL.)

Kafilzadeh

Heidary

2013

Journal of Applied Animal Research

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The aim of this study was to compare the yield of forage and the yield of digestible organic matter as well as chemical composition and kinetics of fermentation of forage produced from 18 different varieties of oat (Avena Sativa L.) grown under the same agronomic condition. Dry matter and organic matter digestibility were determined using in vitro two-stage method and gas production technique was used to measure the kinetics of fermentation of forage from different varieties. Yield of forages varied significantly from 15.6 to 26.3 ton haLGorskij 1026 variety had the highest forage yield. The content of crude protein, neutral detergent fibre (NDF), acid detergent fibre (ADF) and acid detergent lignin (ADL) were significantly (PB0.01) different among varieties of oat used in this study. There were significant (PB0.01) differences among varieties in terms of in vitro dry matter digestibility (IVDMD) and organic matter digestibility (IVOMD) and metabolisable energy (ME) from 18 varieties of oat forage. Possum and LGorskij 1026 varieties had the highest and lowest IVOMD, respectively (67/4 vs. 54/9%). The ME varied from 5.76 to 7.13 MJ kg(1 DM. The mean value of digestible organic matter (DOM) yield was 10.8 ton ha ).Significant difference was observed in the potential gas production (A), constant rate (c) and lag time among different varieties. The fractional rate of gas production (c, h(1 ) ranged from 0.029 to 0.040. The result emphasised that in any evaluation of oat varieties, not only yield and digestibility but also kinetics of digestion or fermentation should be taken into consideration.

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Section: Introductionmentioning

confidence: 99%

Chemical composition,in vitrodigestibility and kinetics of fermentation of whole-crop forage from 18 different varieties of oat (Avena sativaL.)

Kafilzadeh

Heidary

2013

Journal of Applied Animal Research

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“…The impact of grazing resource on calf performance was also evident in studies by Adams et al (1) and Bagley et al (4). Cows in Nebraska were grazed on native range (warm season perennials) and subirrigated meadow; cows in Louisiana were grazed on warm season, improved pasture (coastal bermudagrass) and cool season annuals and legumes.…”

Section: Introductionmentioning

confidence: 77%

“…When breeding occurred in April through June, pregnancy rates in Louisiana fell 38 points compared with breeding during December through February (29). However, if breeding occurred in April through mid May, Bagley et al (4) reported pregnancy rates in Louisiana that were equal to rates achieved in January to mid February.…”

Section: Introductionmentioning

confidence: 99%

“…Numerous studies indicate that production level and resulting costs are affected by when calving commences (1,4,6,29,41,45,57,59,60). Specifically, environmental conditions (ambient temperature, humidity, wind, day length) and season of the year directly affect the forage resource, thus indirectly affecting animal performance.…”

Section: Introductionmentioning

confidence: 99%

“…To the contrary, calves born in Louisiana (4) during warm months (September to November), compared with those born during cool months (January to March), had greater weaning BW (28 kg per calf), and warm month dams had higher feed costs than dams calving in cool months because of more required supplements. The net effect was that the value of increased performance in the September to November calves was greater than the value of increased feed cost in their dams (4).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

REVIEW: Factors Affecting Decisions on When to Calve Beef Females

Sprott

Selk

Adams

2001

The Professional Animal Scientist

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Effect of creep feeding and stocking rate on the productivity of beef cattle grazing grasslands

Viñoles

Jaurena

Barbieri

et al. 2013

New Zealand Journal of Agricultural Research

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Ninety-six Hereford cow-calf pairs grazing Campo grasslands were used in a 2 × 2 factorial design that evaluated stocking rate (high [H] vs low [L]) and creep feeding (CF; yes or no). Creep-fed calves grazing L had a greater average daily gain (1.07 ± 0.03 kg/d) than CF calves grazing H (0.96 ± 0.03 kg/d; P < 0.05), but L − CF (0.78 ± 0.03 kg/d) and H − CF calves (0.73 ± 0.03 kg/d) had similar average daily gains (P > 0.05). Similarly, L + CF calves were heavier at weaning (172 ± 3 kg) than H + CF calves (160 ± 3 kg), but weaning weights between L − CF (144 ± 3 kg) and H − CF (138 ± 3 kg; P > 0.05) did not differ. Creep-fed calves grazed less (39 ± 10%) than non-supplemented calves (58 ± 15%; P < 0.05). Creep feeding had no effect on milk production, body condition and live weight of the dams, so it had no impact on their reproductive performance. We conclude that CF promotes greater live weight gains and weaning weights of Hereford calves grazing Campo grasslands.

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Effects of Forage System on Beef Cow-Calf Productivity

Cited by 17 publications

References 10 publications

Chemical composition,in vitrodigestibility and kinetics of fermentation of whole-crop forage from 18 different varieties of oat (Avena sativaL.)

Chemical composition,in vitrodigestibility and kinetics of fermentation of whole-crop forage from 18 different varieties of oat (Avena sativaL.)

REVIEW: Factors Affecting Decisions on When to Calve Beef Females

Effect of creep feeding and stocking rate on the productivity of beef cattle grazing grasslands

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