Effects of supplementary feeding level on digestion and energy utilization by sheep and goats grazing arid-area rangelands

Askar, Ahmed; Salama, R.; El-Shaer, H. M.; Raef, O.

doi:10.1016/j.anifeedsci.2020.114695

Cited by 8 publications

(3 citation statements)

References 26 publications

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“…The energy consumed was significantly higher in cluster 1 in contrast to cluster 4, which showed the lowest value; the latter coincided with the cluster of more extensive farms where concentrate intake is lower and higher in forage and pasture ( Table 4 ). This is consistent with other studies [ 67 ] where the animals that were fed a high level of concentrate had a higher energy consumption. According to Eldesouky et al [ 68 ], higher intensive systems have a negative impact on the environment due to greater energy requirements of livestock, as well as higher pollutant emissions, mainly from the transport of raw materials.…”

Section: Resultssupporting

confidence: 93%

Milk Quality and Carbon Footprint Indicators of Dairy Sheep Farms Depend on Grazing Level and Identify the Different Management Systems

Plaza

Revilla

Nieto

et al. 2021

Animals

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Currently, there are very few studies in the dairy sheep sector associating milk quality and indicators regarding carbon footprint and their link to grazing levels. For 1 year, monthly milk samples and records related to environmental emissions and management systems were collected through surveys from 17 dairy sheep farms in the region of Castilla y León (Spain), in order to relate this information to the use of natural pastures under free grazing. Indicators were constructed on the collected data and subjected to a multivariate statistical procedure that involved a factor analysis, a cluster analysis and a population canonical analysis. By applying multivariate statistical techniques on milk quality and carbon footprint indicators, it was possible to identify the management system of the farms. From an environmental point of view, farms with a higher grazing level (cluster 4) were more sustainable, as they had the lowest carbon footprint (lower CO2, N2O and CO2 equivalent emissions per sheep and year) and the lowest energy consumption levels, which were gradually lower than those of farms in cluster 3; both indicators were much lower than those of farms in clusters 1 and 2. The milk quality of cluster 1 and 2 farms was significantly lower in terms of total protein and fat content, dry extract, omega-3 fatty acid levels and α-tocopherol content than farms in clusters 3 and 4, which had higher accessibility to grazing resources. In sum, the higher the use of natural resources, the lower the external inputs the farms required and the lower environmental impact and energy costs they have.

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Section: Resultssupporting

confidence: 93%

Milk Quality and Carbon Footprint Indicators of Dairy Sheep Farms Depend on Grazing Level and Identify the Different Management Systems

Plaza

Revilla

Nieto

et al. 2021

Animals

View full text Add to dashboard Cite

show abstract

“…Improved dry matter intake and significant total digestibility of DM, OM, and NDF were observed in adult sheep fed a total mixed ration (TMR) containing moist okara silage [ 72 , 73 ]. A mixture of alfalfa hay and concentrate (50:50%) fed to Barki sheep and Balady goats resulted in 58.5 and 53.4% DM digestibility, 58.4 and 53.5% OM digestibility, 68.1 and 62.6% CP digestibility, and 58.4 and 51.1% neutral detergent fiber digestibility in sheep and goats, respectively [ 74 ]. Otoni et al [ 75 ] fed sheep a variety of grass and legume hays and reported in vivo DM digestibility of 47.6, 53.4, 29.3, and 53.2% for Jiggs hay ( Cynodon dactylon ), Tifton-85 ( Cynodon spp.…”

Section: Alternative Feed Resources In Small Ruminant’s Nutritionmentioning

confidence: 99%

Alternative Approaches to Feeding Small Ruminants and Their Potential Benefits

Boudalia,

Smeti,

Dawit

et al. 2024

Animals

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Small ruminants, such as sheep (Ovisaries) and goats (Capra hircus), contribute to approximately 475 million metric tons of carbon dioxide equivalent (MtCO2e) greenhouse gas (GHG) emissions, accounting for approximately 6.5% of the global emissions in the agriculture sector. Crop residues, silage, grasses, hay, browse, plant leaves, shrubs, agro-industrial by-products, poultry litter, and other alternative feed sources are frequently utilized for small ruminant production. The use of these valuable alternative feeds can significantly improve animal productivity and reduce carbon footprints and GHG fluxes, making it both environmentally friendly and cost-effective. Additionally, these alternative feeds possess antioxidant, antimicrobial, and antiseptic properties that can enhance the quality of the meat and milk produced. By impacting the bacteria involved in ruminal biohydrogenation, alternative feeds can reduce methane emissions and contribute to a decrease in the carbon footprint. Overall, the use of alternative feed sources for small ruminants generally improves their apparent nutrient digestibility and productivity, and has an impact on the production of greenhouse gases, especially methane. Finally, this review recommends evaluating the economic analysis of reducing methane emissions in small ruminants by utilizing different feed sources and feeding techniques.

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“…Furthermore, the capital investment required for the camel-calves project is predicted to be significantly less than that required for cow-calves of the same flock size (Hussein et al, 2021 and2022). In addition to a lower purchase price for camel-calves, fattening/ growing projects can be implemented in arid or desert regions without additional or special preparation against heat stress, drought, or water scarcity (Askar et al, 2021a). Employing proper feeding programs with camel-calves will improve the growth rate and ensure the production of heavy, high-quality, and flavored carcass to the market at a valuable price and at young age (Askar et al, 2021b).…”

Section: -The National Campaign For the Promotion Of Camel Productivi...mentioning

confidence: 99%

Camel, the Animal of Food Security and Climate Change

Kandil,

Wassif,

Rabee

et al. 2023

Egyptian Journal of Camel Science

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Most camels in the world are located in East African countries, where the arid climate limits livestock alternatives, but camels, which can survive a week without water, are one of the most droughtresistant species. Consequently, pastoralists around the world, particularly in Africa, are shifting from cattle to camel and small ruminant production. In a changing climate scenario, camel, in particular, has a lot of promise for protecting poor and marginal farmers' socioeconomic standing as an alternative source of income. Despite its advantages over other domestic animals, the camel has received little attention, with the majority of attention being focused on cattle, sheep, and goats, among other things.Egypt has a significant deficit in red meat production and, is around 55% self-sufficient (543,000 tons), which is met by importing from abroad, primarily beef, up to 99% of all red meat imports, with a total of 21.5 billion pounds, posing a significant burden on the balance of payments. In this review, the activities of the National Campaign for the Promotion of Camel Productivity under the intensive production system to reduce the gap and enhance local red meat production are being explained, considering the harsh conditions brought on by climate change, drought, water scarcity, and environmental implications. In addition, the common camel diseases and rumen microbial populations and its classification are taking place in the review.

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Effects of supplementary feeding level on digestion and energy utilization by sheep and goats grazing arid-area rangelands

Cited by 8 publications

References 26 publications

Milk Quality and Carbon Footprint Indicators of Dairy Sheep Farms Depend on Grazing Level and Identify the Different Management Systems

Milk Quality and Carbon Footprint Indicators of Dairy Sheep Farms Depend on Grazing Level and Identify the Different Management Systems

Alternative Approaches to Feeding Small Ruminants and Their Potential Benefits

Camel, the Animal of Food Security and Climate Change

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