Digestion of straw by the ruminant

McAnally, Rachel Anne

doi:10.1042/bj0360392

Cited by 58 publications

(13 citation statements)

References 5 publications

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“…Differences in weight were not detected between supplement treatments. These results may be supported by earlier reports that showed that pure cellulose is equal to starch for fat production [18], while another researcher observed an increase in digestibility of cellulose when fed in the isolated form [19]. Indeed, these results allow us to answer the question asked by the cotton farmers in Mexico concerning the advantage of supplementing calves on cotton residues.…”

Section: Resultssupporting

confidence: 80%

Sustainable cotton production by using cattle to graze harvest residues in Mexico

Arias¹,

Flores²,

Wood³

et al. 2006

Int. J. SDP

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Twenty crossbred beef steers and twenty crossbred beef heifers were randomly allotted to two treatments to evaluate the effect of supplementation on animal performance in animals grazing cotton plant residues: (1) 10 steers and 10 heifers were allowed to graze ad libitum in an 8 ha cotton field after harvest, and (2) 10 steers and 10 heifers grazed in a similar field but received 1 kg day −1 of supplement. Water intake and mineral consumption were measured daily. Cotton plant residues were obtained from an adjacent 10 ha field by collecting 12 representative samples using a 1 m 2 frame, and separating leaves and cottonseeds for lab analysis. Dry matter (DM), crude protein (CP), neutral detergent fiber (NDF), acid detergent fiber (ADF), cellulose, lignin, silica, calcium, phosphorus and nitrogen ADF were determined. Supplementation did not affect the total weight gain of the steers or the heifers during the 30-day grazing period. The unsupplemented steers gained 0.500 kg day −1 , while the supplemented steers gained 0.466 kg day −1 . The supplemented and unsupplemented heifers gained 0.266 kg and 0.233 kg day −1 , respectively. Water intake did not differ between treatments, but mineral consumption was significantly greater for the unsupplemented calves. The total cotton residues in the soil accounted for about 2,100 kg ha −1 of DM. The economic analysis indicated an increased profitability when using steer calves without supplementation.

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Section: Resultssupporting

confidence: 80%

Sustainable cotton production by using cattle to graze harvest residues in Mexico

Arias¹,

Flores²,

Wood³

et al. 2006

Int. J. SDP

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“…The use of NaOH in the treatment of cereal straw has been done since the 1940s (Mcanally 1942). The straw is treated using 1.5% NAOH w/w for 24 h in a container.…”

Section: Sodium Hydroxide (Naoh) Treatmentmentioning

confidence: 99%

Sustainable Rice Straw Management

Douthwaite¹,

Chivenge²,

Hùng³

et al. 2020

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Section: Mcanally (1942) Suspended Faeces In Silk Bags Inmentioning

confidence: 99%

“…The relative importance of these factors has not been assessed. McAnally (1942) suspended faeces in silk bags in Potential digestibility has been defined by the rumen of a sheep and noted that the digestion Wilkins (1966 a) as the maximum digestibility of cellulose ceased after 5 days. Only 12 % of the attainable when the conditions and the duration of cellulose was digested; this suggests that a con-fermentation are not limiting factors and hence is siderable proportion of the cellulose in faeces is not an inverse measure of the quantity of indigestible digestible by ruminant animals.…”

Section: Introductionmentioning

confidence: 99%

“…This contrasts with tissue. In the experiments reported here the digestibility coefficients of 100% for isolated, measurement of potential cellulose digestibility chemically modified, celluloses reported by was investigated with in vitro fermentation and in McAnally (1942) and Hungate (1963) using in vitro vivo suspension techniques and the relationships techniques.between potential cellulose digestibility and in The in vivo digestibility of herbage feeds is vivo cellulose digestibility were examined for a influenced under some circumstances by inclusion range of grasses, in the ration of urea (Ellis & Pfander, 1958; …”

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confidence: 99%

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The potential digestibility of cellulose in forage and faeces

Wilkins

1969

J. Agric. Sci.

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The potential digestibility of cellulose is defined as the maximum digestibility obtainable when the conditions and duration of digestion are not limiting factors. Techniques for measuring potential cellulose digestibility were examined and the relationship between potential cellulose digestibility and in vivo cellulose digestibility was explored for a range of grasses.Cellulose digestibility was found to reach a maximum value after 5 days incubation in vitro. No further cellulose was digested when the residues from an initial incubation for 6 days were incubated with a second rumen liquor inoculum. The values measured after a single incubation of 6 days duration were similar to cellulose digestibility coefficients measured by the suspension of ground forage samples in nylon bags in the rumen for 6 days. Plant factors appear to limit further digestion and the residue from prolonged digestion in vitro consisted only of lignified and cutinized tissue. Potential cellulose digestibility measured by either of the above techniques was higher than cellulose digestibility in vivo. The difference varied between forages and when the difference was large, the digestibility of cellulose in faeces was high.It is suggested that measurements of the potential digestibility of cellulose in feed and faeces may be of use in estimating the digestibility of grazed herbage. INTRODUCTIONthrough the alimentary tract. The relative importance of these factors has not been assessed. McAnally (1942) suspended faeces in silk bags inPotential digestibility has been defined by the rumen of a sheep and noted that the digestion Wilkins (1966 a) as the maximum digestibility of cellulose ceased after 5 days. Only 12 % of the attainable when the conditions and the duration of cellulose was digested; this suggests that a con-fermentation are not limiting factors and hence is siderable proportion of the cellulose in faeces is not an inverse measure of the quantity of indigestible digestible by ruminant animals. This contrasts with tissue. In the experiments reported here the digestibility coefficients of 100% for isolated, measurement of potential cellulose digestibility chemically modified, celluloses reported by was investigated with in vitro fermentation and in McAnally (1942) and Hungate (1963) using in vitro vivo suspension techniques and the relationships techniques.between potential cellulose digestibility and in The in vivo digestibility of herbage feeds is vivo cellulose digestibility were examined for a influenced under some circumstances by inclusion range of grasses, in the ration of urea (Ellis & Pfander, 1958;

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Digestion of straw by the ruminant

Cited by 58 publications

References 5 publications

Sustainable cotton production by using cattle to graze harvest residues in Mexico

Sustainable cotton production by using cattle to graze harvest residues in Mexico

Sustainable Rice Straw Management

The potential digestibility of cellulose in forage and faeces

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