Revisiting tropical pasture intake: what has changed in 50 years?

Charmley, E.; Thomas, Dean T.; Bishop-Hurley, Greg

doi:10.1071/an23045

Cited by 3 publications

(3 citation statements)

References 87 publications

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“…Due to its fragile environment, it has been recognised for many years that it is an area that must be carefully managed (Ferguson 1973). The wet, monsoonal-zone native pastures have high levels of structural carbohydrates, high cellulose and lignin contents, and low digestibility (Minson 1990;Charmley et al 2023), making it difficult for livestock to obtain sufficient energy for rapid growth. Many of the soils of northern Australia are low in phosphorus, and the plants usually have also low phosphorus content and phosphorus deficiency of cattle is prevalent without supplementation (Dixon et al 2017;Schatz et al 2023).…”

Section: Cattle In the Pastoral Zonementioning

confidence: 99%

The societal role of meat: the Dublin Declaration with an Australian perspective

et al. 2023

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It is clear that the societal role of meat is being challenged with ideological and simplified logic without substantiation from robust data-driven science. With this background, the international summit titled ‘The societal role of meat – what the science says’ was held in Dublin, Ireland, during October 2022, to provide evidence-based evaluations and the Dublin Declaration was signed by over 1000 scientists. In this paper, we provide a synopsis of the summit and then give context for evaluating the societal role of meat in Australia. The key themes of the summit were the essential roles of meat in (1) diet and health, (2) a sustainable environment and (3) society, economics and culture. Evidence clearly showed the role of meat as a nutrient-dense source of high-quality protein and micronutrients that can be safely consumed by humans. Further, the complementary role of livestock in agricultural systems was highlighted with both plant- and animal-based agriculture reliant on each other to maximise the efficient production of food. Thus, from both an Australian and world perspective, very little food considered to be human-edible is fed to livestock. The role of livestock in rural societies across the world was emphasised to underpin regional and national economies, with particular importance in those countries with developing economies to facilitate growing wealth to ‘step out’ of poverty and provide gender equality. Meat production, particularly from ruminants, is a critical part of Australian primary production and it is concluded that the Dublin Declaration is highly relevant to Australia. Finally, concern regarding future funding and organisation of research and extension is discussed. There is a need to continue funding highly collaborative programs that bring a broad range of disciplines together, in conjunction with undergraduate and postgraduate teaching to underpin the social license to operate for meat and livestock production.

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Section: Cattle In the Pastoral Zonementioning

confidence: 99%

The societal role of meat: the Dublin Declaration with an Australian perspective

et al. 2023

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“…Variations in the climate and in soil resulting from these climatic conditions promote decreases in the availability of feed sources or feeds with nutritional quality that can meet the nutritional requirements of ruminants [4]. Therefore, in these regions, one of the main options is to produce high-quality food in the rainy season and preserve it, with silage being the main form of conservation and food source in these climates considering the characteristics of the plants [5].…”

Section: Introductionmentioning

confidence: 99%

Productive and Qualitative Traits of Sorghum Genotypes Used for Silage under Tropical Conditions

Oliveira,

Perazzo,

dos S. Pina

et al. 2024

Crops

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The aim of this study was to evaluate the productive potential, chemical composition, and fermentation profile of 24 genotypes of forage sorghum after ensiling. For this agronomic evaluation, a completely randomized block design with six replicates and twenty-four treatments was employed. Genotype 5 had the highest dry matter (DM) yield of 22.24 t/ha. The plant DM content ranged (p < 0.001) from 271.8 g/kg of fresh matter (FM) in genotype 9 to 330.0 g/kg FM in genotype 3, averaging 302.9 g/kg FM. The crude protein and non-fibrous carbohydrates differed significantly (p < 0.001) in the evaluated silages, with mean values of 61.0 and 275.3 g/kg DM, respectively. The pH of the sorghum silages also differed (p < 0.001), despite having an average of 3.94, with values ranging from 3.68 to 4.27. No changes were observed (p > 0.05) for the dry matter recovery of the sorghum genotype silages, which averaged at 853.9 g/kg FM. In the present study, genotype 5 resulted in being the most recommended genotype because it demonstrated a higher yield and higher nutritional value in both its fresh form and its ensiled form; had the lowest losses; and showed an ideal dry matter recovery after ensiling of 880 g/kg.

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“…These climatic conditions result in lower availability and the lower nutritional quality of food sources for ruminants, mainly in pasture-based production systems [4]. In this sense, it is necessary to explore the forages that adapt to those climatic conditions that ensure the production of biomass for feeding ruminants [5].…”

Section: Introductionmentioning

confidence: 99%

The Inclusion of Pigeon Pea Hay Improves the Quality of Giant Cactus Harvested at Different Times

Saldanha,

de Carvalho,

Rodrigues

et al. 2024

Agronomy

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The objective of this study was to evaluate the effects of giant cactus harvest time and the inclusion of pigeon pea hay in improving the ensiling process and the nutritional composition of cactus silage. In total, 40 polyvinyl chloride-PVC mini-silos (10 × 40 cm) were used. Mini-silos were distributed in a 2 × 5 factorial scheme, referent to 2 harvest times (18 and 24 months) and 5 levels (0, 10%, 20%, 30%, and 40%) of pigeon pea hay inclusion in a randomized design. Effluent losses (p < 0.001) showed a negative linear effect as the inclusion of pigeon pea hay increased. Gas losses (p < 0.001), dry matter (DM) recovery (p < 0.001), and pH (p < 0.001) revealed the interactive effects between the pigeon pea hay inclusion and the harvest time. The DM content was higher in the giant cactus harvested at 24 months. The difference in nutritional composition promoted by the harvest time did not affect the silage quality. The gradual inclusion of pigeon pea hay improved the fermentative and bromatological characteristics of giant cactus silage. It is important to highlight that the inclusion of pigeon pea hay contributed to the increase in pH without affecting the necessary acidity for ideal conservation.

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Revisiting tropical pasture intake: what has changed in 50 years?

Cited by 3 publications

References 87 publications

The societal role of meat: the Dublin Declaration with an Australian perspective

The societal role of meat: the Dublin Declaration with an Australian perspective

Productive and Qualitative Traits of Sorghum Genotypes Used for Silage under Tropical Conditions

The Inclusion of Pigeon Pea Hay Improves the Quality of Giant Cactus Harvested at Different Times

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