Performance of beef cattle grazing oats supplemented with energy, escape protein or high quality hay

Arelovich, H. M.; Arzadún, M.; Laborde, H. E.; Vásquez, Magaly

doi:10.1016/s0377-8401(03)00045-2

Cited by 12 publications

(8 citation statements)

References 22 publications

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“…Therefore, depending on the quality of that hay, the N supply may be marginal for several hours -as occurred in the experiment with morning sampling. Arelovich et al (2003) reported a dramatic response in productivity to supplemented escape protein in young cattle grazing OP of similar composition to that of this trial.…”

Section: Animal Performancesupporting

confidence: 51%

“…Wheeler (1981) stated that ADG might vary between 700 and 1000 g in ruminants grazing small grain forages. Other authors also report a similar range of ADG values for cattle grazing winter annuals (Wagner et al, 1984;Arzadún et al, 1989;Arelovich et al, 2003). This expected variability in ADG could make it very difficult to predict animal performance, even when they consume the same type of forage year after year.…”

Section: Animal Performancementioning

confidence: 83%

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Influence of hay quality and pasture location on performance of beef cattle grazing oats

Arelovich

Laborde

Arzadún³

et al. 2004

Span. j. agric. res.

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Heifers grazing oat pasture (OP) at two locations in Argentina, Argerich (ARG) and Pasman (PAS), were subjected to one of three different dietary supplement treatments: (1) control (CON, no supplement), (2) sorghum hay (SH), or (3) alfalfa-grass hay (AGH), all provided ad libitum in individual pens. The variables measured were: dry matter (DM) yield and composition of OP, hay intake, average daily weight gain (ADG), rumen pH and NH 3 -N, and blood mineral levels. DM availability did not limit OP intake. OP crude protein (CP) content ranged from 11.3 to 13% at ARG, and 10.7 to 13.3% at PAS. OP-minerals varied with location; the mean K/(Ca + Mg) ratios were 5.68 meq (ARG) and 4.82 meq (PAS). Heifers ate more AGH (785 g) than SH (684 g; P = 0.08). Hay consumption was 2.88 times greater at PAS than at ARG (P < 0.05). ADG was larger with SH (558 g) and AGH 594 g than with CON treatment (454 g); the average for ARG animals was 571 g compared to 500 g for PAS animals (P <0.05). Rumen pH was lower at 14:30 h (pH 6.7) than at 10:00 h (pH 7.5; P < 0.05). NH 3 -N values were higher at 14:30 h (19.59 mg dl -1 ) than at 10:00 h (4.69 mg dl -1 ; P < 0.05). Plasma Ca (15.50 mg dl -1 ) and Mg (2.84 mg dl -1 ) levels were higher in PAS cattle (P < 0.05). Animal performance improved with hay supplementation, but location affected response intensity.Key words: dry matter availability, pasture composition, daily weight gain, rumen, pH, ammonia, blood, minerals. ResumenInfluencia de la calidad del heno suplementario y la localización de la pastura sobre el rendimiento de bovinos de carne a pastoreo sobre avena Se realizaron tres tratamientos con novillas pastoreando verdeos de avena (VA) en dos localidades de Argentina, Argerich (ARG) y Pasman (PAS): (1) Control (CON, sin suplemento), (2) heno de sorgo (HS), y (3) heno de alfalfa y gramíneas (HAG), suplementados ad libitum en corrales individuales. Evaluamos rendimiento de materia seca (MS) y composición en VA; y en los animales consumo del heno, ganancia diaria de peso (GDP), pH y N-NH 3 en rumen, y minerales en sangre. La disponibilidad de MS no limitó el consumo de VA; su proteína bruta (PB) osciló entre 11,3 y 13% (ARG), 10,7 y 13.3% (PAS). Los minerales en VA variaron entre localidades, la relación K/(Ca + Mg) promedió 5,68 meq (ARG) y 4,82 meq (PAS). Las novillas consumieron diariamente más HAG (785 g) que HS (684 g; P = 0.08), y 2,88 veces más heno en PAS que en ARG (P < 0,05). En GDP, HS (558 g) y HAG (594 g) superaron al CON (454 g), y la media de ARG (571 g) a PAS (500 g; P < 0,05). En el rumen el pH decreció a las 14:30 h (6,7) vs. 10:00 h (7,5; P < 0,05), y el N-NH 3 (mg dl -1 ) aumentó a las 14:30 h (19,59) vs. 10:00 h (4,69; P < 0,05). Ca (15.50 mg dl -1 ) y Mg (2.84 mg dl -1 ) en plasma fue mayor en PAS (P < 0,05). El rendimiento animal mejoró con la suplementación, pero la magnitud de respuesta estuvo afectada por la localidad.Palabras clave: disponibilidad materia seca, composición pastura, ganancia diaria de peso, rumen, pH, amoníaco, sangre, minerales.

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Section: Animal Performancesupporting

confidence: 51%

Section: Animal Performancementioning

confidence: 83%

Influence of hay quality and pasture location on performance of beef cattle grazing oats

Arelovich

Laborde

Arzadún³

et al. 2004

Span. j. agric. res.

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“…Annual winter oats pastures are commonly used in Argentina for lactating dairy cows from late fall to early spring to compensate for the low biomass yield of alfalfa (Medicago sativa) pastures during this period. In addition, winter oats have good adaptation to welldrained clay and sandy loam soils, simple cultivation procedure, rapid development, and high dry matter yield (Arelovich et al 2003). However, there is little information on cis-9, trans-ll CLA concentration in milk of dairy cows grazing annual pasture species such as winter oats.…”

Section: Introductionmentioning

confidence: 99%

Milk production and fatty acid profile of milkfat by dairy cows fed a winter oats (Avena sativaL.) pasture only or a total mixed ration

Schroeder

Couderc

Bargo

et al. 2005

New Zealand Journal of Agricultural Research

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Milk production and milk fatty acid (FA) composition were determined in 12 Holstein dairy cows in mid-lactation fed winter oats pasture only (WOP) or total mixed ration (TMR) in a single crossover design. The WOP treatment cows received a high quality winter oats (Avena sativa L.) pasture rotationally grazed, while the TMR treatment cows were fed a corn silage-based TMR feed ad libitum once daily. Milk production tended to be lower (14.9 versus 16.3 kg day -1 ; P = 0.15), and milkfat (32.2 versus 35.5 gkg -1 ; P < 0.01), and total protein (35.8 versus 37.8 g kg -1 ; P < 0.01) concentration were significantly lower for the WOP fed cows than for the TMR fed cows. The cows fed WOP lost liveweight and body condition score, but the cows fed TMR gained liveweight. Cows fed WOP had a lower saturated:unsaturated FA ratio (1.85 versus 2.22; P < 0.02). The cis-9 trans-11 CLA content was 2.6-fold higher (1.41 versus 0.55% of total FA; P < 0.01) for the WOP cows. These results indicated that the nutritive value of the milk could be improved by feeding cows on high quality pasture; however, milk production was lower for grazing dairy cows.

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“…Red clover PPO reduces proteolysis and increases RUP in harvested forage (Albrecht and Muck, ; Broderick and Albrecht, ) when it acts on endogenous substrates to form o ‐quinones that crosslink with proteins (Lee et al ., ). Supplementary RUP has improved gain in cattle grazing high‐quality forage (Arelovich et al ., ). While OGR contains PPO, it may not contain enough substrate for effective protein crosslinking (Marita et al ., ) and has shown proteolytic activity similar to ALF (Papadopoulos and Kersie, ).…”

Section: Discussionmentioning

confidence: 97%

Weight gains, blood parameters and faecal egg counts when meat‐goat kids were finished on alfalfa, red clover and orchardgrass pastures

Turner

Cassida

Zając

2012

Grass and Forage Science

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The experiment was conducted in 2005–2007 to evaluate weight performance, blood parameters associated with forage nutrient‐use and anaemia from gastrointestinal nematode (GIN) infection, and faecal egg count (FEC) patterns of meat‐goat kids finished on alfalfa (Medicago sativa L.; ALF); red clover/grass mixture (Trifolium pratense L.; RCG); and orchardgrass (Dactylis glomerata L; OGR) pastures. Forage mass, crude protein (CP) and total digestible nutrients (TDN) displayed complex interactions between treatment and time (P < 0·001) across the grazing seasons. Final body weight was greater for goats finished on ALF and RCG than on OGR, except in 2006 when ALF was greater than RCG or OGR. The TDN/CP ratios in forages and blood urea nitrogen concentrations in grazing goats were highly correlated (r = 0·99; P = 0·02) and suggested that animals were wasting forage protein. Faecal egg count was variable over the grazing season each year (date and treatment × date interaction; P < 0·001), but in general, FEC indicated that goat kids grazing ALF were less affected by GIN than kids grazing RCG or OGR. Research is needed to determine whether strategic energy supplementation would improve protein‐use efficiency and resilience to parasite infection when finishing meat goats on pastures managed for high forage nutritive value.

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Performance of beef cattle grazing oats supplemented with energy, escape protein or high quality hay

Cited by 12 publications

References 22 publications

Influence of hay quality and pasture location on performance of beef cattle grazing oats

Influence of hay quality and pasture location on performance of beef cattle grazing oats

Milk production and fatty acid profile of milkfat by dairy cows fed a winter oats (Avena sativaL.) pasture only or a total mixed ration

Weight gains, blood parameters and faecal egg counts when meat‐goat kids were finished on alfalfa, red clover and orchardgrass pastures

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