The effect of five different supplements on the degradation of straw in sheep given untreated barley straw

Silva, Ayona T.; Ørskov, E. R.

doi:10.1016/0377-8401(88)90091-0

Cited by 56 publications

(27 citation statements)

References 7 publications

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“…content is comparatively lower (Silva & Orskov 1988). The poor intake and digestibility values obtained for the unsupplemented animals is a result of the fact that Ration D had crude protein levels that are below the recommended minimum values for maintenance.…”

Section: Discussionmentioning

confidence: 94%

Scrotal circumference, bodyweight and serum testosterone concentration of Red Sokoto weaner bucks as influenced by dry season crop‐residue supplementation

Malau‐Aduli¹,

Eduvie

Lakpini

et al. 2003

Animal Science Journal

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The effect of dry season supplementation with crop-residue-based rations on bodyweight, scrotal circumference and serum testosterone concentrations in Red Sokoto weaner bucks at 5, 6 and 7 months of age was investigated in the present study. There were 7 treatment groups which were fed a positive control ration (conventional concentrate) fed at 1 and 2% of the bucks' bodyweights (Rations 1A and 2A), two crop-residue-based test rations each fed at 1 and 2% of bodyweight (1B, 2B, 1C and 2C), and a negative control that was unsupplemented (Ration D). All treatment groups had ad libitum access to natural pastures and Digitaria smutsii hay as a basal diet. Bodyweight and scrotal circumference of the bucks significantly increased ( P < 0.05) with age from 5.9 kg to 10.2 kg, and 4.40 cm to 6.95 cm, at 5 and 7 months of age, respectively. Bucks on Ration D (unsupplemented group) had the lowest bodyweight and scrotal circumference. Bucks on Ration 2A showed a significant increase in basal testosterone concentration from 0.32 ng/mL at 5 months of age to 0.65 ng/mL at 7 months of age. Peak testosterone concentration also increased from 1.0 ng/mL at 5 months to 2.8 ng/mL at 7 months of age. Bucks on test Ration 2C had higher bodyweights (6.75, 8.00 and 10.00 kg at 5, 6 and 7 months of age, respectively) than bucks on the other test Ration B (6.20, 7.20 and 8.50 kg, respectively). There were no significant differences between the two test rations with regard to scrotal circumferences of the bucks at all ages. However, at 7 months of age, bucks on test Ration 2C had significantly higher peak testosterone concentration (1.80 ng/mL) than their counterparts on test Ration 2B (1.30 ng/mL). The secretory patterns of testosterone were episodic and pulsatile in nature. It was concluded that crop-residue supplementation in prepubertal Red Sokoto bucks has a significant influence on their bodyweight, scrotal circumference and testosterone production. Test Ration C was a cheap, affordable and better crop-residue-based ration for optimal reproductive performance than test Ration B.

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Section: Discussionmentioning

confidence: 94%

Scrotal circumference, bodyweight and serum testosterone concentration of Red Sokoto weaner bucks as influenced by dry season crop‐residue supplementation

Malau‐Aduli¹,

Eduvie

Lakpini

et al. 2003

Animal Science Journal

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“…Ammonia production with mixtures is also greater during this lag phase (Butterworth and Mosi, 1986;Bowman and Asplund, 1988b;Brown and Pitman, 1991). The presence of a source of easily fermentable cellulose and hemicellulose in the diet increases the number of fibrolytic microorganisms, stimulating digestibility of other source of less degradable fibres (Silva and Orskov, 1988). That is for this reason that alkaline treatments which hydrolyse and solubilise fibres can strongly modify poor forage digestibility (Atwell et al, 1991).…”

Section: Associative Effects Between Low-quality Forages and Complemementioning

confidence: 99%

Associative effects between forages on feed intake and digestion in ruminants

Niderkorn

Baumont

2009

Animal

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The feeding value of forage mixtures from permanent and temporary multi-species grasslands cannot always be precisely defined. Indeed, the digestibility and feed intake of a combination of forages can differ from the balanced median values calculated from forages considered separately. In order to present an overview of the associative effects between forages on digestion and intake, a literature study was carried out. The associative effects can be studied in a complementary way in vitro to test digestive interactions of a large number of mixtures and to carry out explanatory experiments, and in vivo to investigate intake and digestion at the whole animal scale. We identified three main situations in which interactions between forages can lead to associative effects on intake and digestion: (i) increased intake that can be observed with grass and legume association can be explained by fast digestion of the soluble fraction of legumes, and a higher rate of particle breakdown and passage through the rumen, (ii) increased digestion when a poor forage is supplemented by a high nitrogen content plant can be explained by stimulation of the microbial activity and (iii) modification of digestive processes in the rumen, including proteolysis and methane production when certain bioactive secondary metabolites such as tannins, saponins or polyphenol oxidase are present. According to the type and concentration of these compounds in the diet, the effects can be favourable or unfavourable on intake and digestive parameters. Reported associative effects between forages show a large variability among studies. This reflects the complexity and multiplicity of nutritional situations affecting intake and the rumen function in a given animal. In order to provide more reliable information, further accumulation of data combining in vitro and in vivo studies is required. A better understanding of the associative effects between forages could help to optimise feed use efficiency, resulting in greater productivity, a reduction of the environmental impact of animal emissions and more sustainable animal production.

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“…This does not allow for effective degradation, hence lowering the digestibility of feed. Increasing the level of crop residue inclusion in the diet also increases the amount of lignin, which depresses the digestibility of the ration [9], because the rate of microbial colonisation of a feed with high fibre content is comparatively lower [10]. The poor intake and digestibility values obtained for the unsupplemented animals is due to the fact that ration D was of low quality as a result of its high NDF and lignin contents.…”

Section: Ration Intake and Digestibilitymentioning

confidence: 99%

Crop-residue supplementation of pregnant does influences birth weight and weight gain of kids, daily milk yield but not the progesterone profile of Red Sokoto goats

et al. 2004

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-The parameters investigated in this study with the objective of evaluating growth, lactation and reproductive performances, included birth weight, litter size, 0-90 days gain and average daily gain of kids as well as the milk yield and progesterone profile of Red Sokoto does supplemented with crop-residue based rations during the long-dry period of the subhumid zone in Nigeria. A total of 7 treatments of 4 goats each was utilised. All treatment groups had a basal diet of Digitaria smutsii hay and natural pasture ad libitum. Ration A supplemented with the conventional concentrate was used as the positive control; rations B and C were supplemented with crop residues; and ration D without supplement was used as the negative control. Supplementation with concentrate and crop residues significantly increased (P < 0.05) the birth weight and liveweight gains of kids, but littersize was unaffected. The heaviest kids at birth (1.3-1.4 kg) were from does in treatments 1A, 2A and 2C, while does in treatments 1B, 2B, 1C and D had the lightest kids (1.07-1.18 kg). The highest gains of 53.9 g·day -1 were recorded in treatment 2A and the least (32.4 g·day -1 ) in treatment 1B. Supplementation also significantly influenced (P < 0.01) the daily milk yield of dams over the 90-day period of the dry season. All the does had similar progesterone profiles from late gestation through parturition to early lactation irrespective of their treatment group. It was concluded that ration C fed at the 2% level is a good and affordable supplementary feed package for increased birth weight and preweaning gains in kids for meat production.Red Sokoto goats / supplementation / weight gains / milk / progesterone

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The effect of five different supplements on the degradation of straw in sheep given untreated barley straw

Cited by 56 publications

References 7 publications

Scrotal circumference, bodyweight and serum testosterone concentration of Red Sokoto weaner bucks as influenced by dry season crop‐residue supplementation

Scrotal circumference, bodyweight and serum testosterone concentration of Red Sokoto weaner bucks as influenced by dry season crop‐residue supplementation

Associative effects between forages on feed intake and digestion in ruminants

Crop-residue supplementation of pregnant does influences birth weight and weight gain of kids, daily milk yield but not the progesterone profile of Red Sokoto goats

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