Determination of digestible valine requirements in male and female Cobb 500 broilers

Maynard, C.W.; Liu, S.Y.; Lee, J.T.; Caldas, Justina V.; Diehl, J.J.E.; Rochell, S.J.; Dridi, Sami; Kidd, M. T.

doi:10.1016/j.anifeedsci.2021.114847

Animal Feed Science and Technology

2021

DOI: 10.1016/j.anifeedsci.2021.114847

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Determination of digestible valine requirements in male and female Cobb 500 broilers

C.W. Maynard

S.Y. Liu

J.T. Lee

et al.

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Cited by 5 publications

(1 citation statement)

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“…Drawing on the known nutrient requirements of domestic species can start to fill that gap, by providing a starting point for formulating the diets of wild species. For species that can be studied in laboratory or controlled production settings, titration studies can be conducted to determine nutrient requirements (Maynard et al 2021), where large sample sizes and invasive monitoring are both possible. For threatened species, titration studies have been adapted to determine the nutritional requirements of wildlife species in captivity via nutrient intake trials.…”

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Current perspectives in avian nutrition: domestic animal models and their role in conservation management

Jarman,

Shaw,

Grueber

2023

Ibis

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As biodiversity declines, wildlife conservation focuses on in situ and ex situ management strategies. Zoo‐based breeding programmes are often designed to contribute to the conservation of species that are threatened in the wild. Diet contributes to the reproductive success, disease status and longevity of all animals. It is near‐impossible to replicate a species' diet in captivity using only the species they consume in the wild, but the nutritional composition of a wild diet, if known, can be closely matched using commercially available foods for which the nutritional composition has been calculated. Ecological research has identified food items of importance in the diet of many species. However, the nutritional composition of these food items is rarely evaluated, even though the composition of wild food items is important in understanding the dietary adaptations and requirements of wildlife. In contrast, the nutritional requirements of domestic species are well researched and can be used to predict a range of plausible nutrient requirements of some wild species, especially those with similar life histories. Access to wild populations provides further opportunities for nutritional science to determine the requirements of individual species. Small‐scale dietary experimentation undertaken at conservation institutions may show positive effects on health and welfare but is rarely published in the scientific literature. This review describes current standards in nutritional management of birds and recommends pathways for filling knowledge gaps. Research on mammals has dominated the nutrition literature, so there is a relative lack of nutritional management information for birds. We combine concepts of domestic animal nutrition with recent findings on the nutritional requirements of birds to provide a foundation for further studies of avian nutrition. We call for the broader zoological community to share data and collaborate on nutritional research to support conservation institutions in nutritional management of wild birds.

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Current perspectives in avian nutrition: domestic animal models and their role in conservation management

Jarman,

Shaw,

Grueber

2023

Ibis

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Interactions of the branched-chain amino acids. 2. Practical adjustments in valine and isoleucine

Mullenix

Maynard

Lee

et al. 2022

Journal of Applied Poultry Research

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Titration of dietary isoleucine and evaluation of branched-chain amino acid levels in female Cobb 500 broilers during a 22- to 42-day finisher period

Mullenix¹,

Maynard²,

Wells-Crafton³

et al. 2022

Journal of Applied Poultry Research

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Determination of digestible valine requirements in male and female Cobb 500 broilers

Cited by 5 publications

References 45 publications

Current perspectives in avian nutrition: domestic animal models and their role in conservation management

Current perspectives in avian nutrition: domestic animal models and their role in conservation management

Interactions of the branched-chain amino acids. 2. Practical adjustments in valine and isoleucine

Titration of dietary isoleucine and evaluation of branched-chain amino acid levels in female Cobb 500 broilers during a 22- to 42-day finisher period

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