Diets of Sheep, Angora Goats, Spanish Goats and White-Tailed Deer under Excellent Range Conditions

Bryant, Fred C.; Kothmann, M.M.; Merrill, Leo B.

doi:10.2307/3898549

Cited by 80 publications

(45 citation statements)

References 16 publications

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“…When viewed overall, woody species provided 37.5% of mean daily intake over the year, or a daily quantity of 670.7 g (Table 1), similar to the findings of Bryant et al (1979Bryant et al ( , 1980, Campbell and Johnson (1983), Pfister and Malechek (1986a). Other authors (Wilson, 1957;Swain, 1982) deem the contribution of trees and bushes more important.…”

Section: Trees and Bushessupporting

confidence: 68%

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Dry matter intake in grazing dairy goats

Peinado-Lucena¹,

Gómez-Castro²,

Sánchez-Rodríguez³

et al. 1993

J. Anim. Feed Sci.

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The contribution of three strata of pasture (grass, woody species and acorns) to the diet of goats during a grazing season was studied. Results showed that in autumn-winter acorns (61.6%) were the dominant dietary dry-matter component, followed by woody species (25.8%) and grass (12.6%). The opposite was true in spring when the greatest contribution was from grass (61.1%), followed by woody species (37%) and acorns providing a mere 1.9%. In summer, however, woody species increased their contribution to 47.4%, thus constituting an important intake component for grazing goats in the region. Acorns proved to be an important resource, as they are produced at a time when there is a shortage of grass and when woody species have limited nutritional value. Results showed that goats should not be classed solely as browsers but placed midway between strictly herbivorous animals and true browsers, given the contribution of grass to their diet, although an opportunist capacity for adaptation to changes in the quality of available feeds should also be taken into account.

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Section: Trees and Bushessupporting

confidence: 68%

“…Rosenberger and Meuret (1985) and Meuret et al (1985) report lower figures for grass, at less than 25% of DMI. Mean daily grass intake was 845.7 g of DM or 47.8% of total annual intake (Table 1), on a par with figures of Wilson and Mulham (1980), Bryant et al (1979Bryant et al ( , 1980, Pfister and Malechek (1986a).…”

Section: Grassmentioning

confidence: 88%

Dry matter intake in grazing dairy goats

Peinado-Lucena¹,

Gómez-Castro²,

Sánchez-Rodríguez³

et al. 1993

J. Anim. Feed Sci.

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“…The chemical composition of pasture is influenced by season (Ramirez et al, 1995;Shinde et al, 1996). The type of soil and its fertility, stocking density on the pastureland, type of grazing pasture and climate also contribute to the variability in chemical composition and nutritive value of pasture (Bryant et al, 1979;Tripathi et al, 2001). The concentrate supplement was formulated to provide adequate protein nutrition thus had higher CP and lower fibre fractions.…”

Section: Resultsmentioning

confidence: 99%

Effect of complete feed blocks or grazing and supplementation of lambs on performance, nutrient utilisation, rumen fermentation and rumen microbial enzymes

Raghuvansi

Prasad

Tripathi

et al. 2007

Animal

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A study to compare two feeding systems, stall feeding (SF) and grazing plus supplementation (GR) was carried out, based on intake, performance and rumen fermentation characteristics of lambs. While SF animals received ad libitum complete feed blocks (CFB), GR animals were allowed grazing for 8 h on a pasture and supplemented with concentrate mixture at 250 g per head per day. Intake in grazing animals was determined using chromium III oxide as internal marker. Intake of dry matter (DM), crude protein (CP) and organic matter (OM) were higher ( P , 0.01) in SF than in GR animals. Similarly, digestibility of OM, CP and energy were higher ( P , 0.01) in SF animals. Average daily gain in SF animals (101 g) was significantly ( P , 0.01) higher than in GR animals (78 g) but total wool yield was similar for the two groups (856 g, SF; 782 g, GR). The pH of the rumen content, concentration of total volatile fatty acids and total activities of carboxymethyl cellulase, xylanase and esterase in the rumen liquor were similar. The concentrations (mg/dl) of total nitrogen (125, SF; 63, GR) and NH 3 -nitrogen (42, SF; 31, GR) were higher in SF animals than that of GR animals. A significantly higher activity ( P , 0.05) of microcrystalline cellulase (24.5 v. 7.7 units) and lower activity ( P , 0.05) of protease (309 v. 525 units), was observed in the rumen of SF animals than in GR animals. SF animals could therefore harness more energy through degradation of plant cell walls thus reducing breakdown of plant proteins as gluconeogenic source. The SF system of feeding where CFB was offered to sheep appeared superior to GR in terms of intake, nutrient utilisation and animal performance. Therefore the SF feeding system where CFB are offered to animals can be advocated as an alternative to grazing and supplementation feeding strategy for sheep production, especially where the pastures are highly eroded and need resting for regeneration or curing. The CFB feeding can also be adopted under adverse conditions like drought and famine, a common phenomenon in arid and semiarid conditions.

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“…Under rangeland conditions in Texas (USA), this deer was favoured by controlled grazing with sheep and goats, although their stocking should be carefully managed during the critical times of the year (winter, early spring) when competition might affect deer negatively (Bryant et al, 1979).…”

Section: Interaction Of Goats With Wild Herbivoresmentioning

confidence: 99%

Goat grazing, its interactions with other herbivores and biodiversity conservation issues

García

Celaya

García

et al. 2012

Small Ruminant Research

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a b s t r a c tGoats have developed in harmony with local conditions of climate, terrain, vegetation, and even pathogens over centuries in many areas, while they have been blamed of causing environment degradation in other ones. The paper summarizes the situation of goat's population worldwide, the status of the breeds and the multiple implications of their conservation, the interactions of goats with other animal species (wild or domestic) and the main issues regarding the consequences of goat grazing from the environmental point of view. It underlines that most of the environmentally harmful effects of goat grazing arise from improper management practices at very high grazing pressures whereas goat grazing can be a useful tool for conservation if managed adequately. Moderate grazing pressures can be compatible with high levels of biodiversity and provide externalities, whereas high intensity at short term can be a valuable tool for weed control. Goat genetic heritage is seriously threatened and requires more studies and greater support from national and international institutions, in parallel with other efforts in rural development, especially for remote areas which hold an outstanding reservoir of livestock diversity adapted to the local conditions and managed by impoverished communities. A multidisciplinary approach of scientists, policy makers, rangeland managers and local communities is required for the design of future sustainable management plans.

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Diets of Sheep, Angora Goats, Spanish Goats and White-Tailed Deer under Excellent Range Conditions

Cited by 80 publications

References 16 publications

Dry matter intake in grazing dairy goats

Dry matter intake in grazing dairy goats

Effect of complete feed blocks or grazing and supplementation of lambs on performance, nutrient utilisation, rumen fermentation and rumen microbial enzymes

Goat grazing, its interactions with other herbivores and biodiversity conservation issues

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