Amino Acid Concentrations in Seed of Preferred Forages of Bobwhites

Boren, Jon C.; Lochmiller, Robert L.; Leslie, David M.; Engle, D. M.

doi:10.2307/4002801

Cited by 9 publications

(4 citation statements)

References 22 publications

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“…In some studies, nutritional value of the acorns including crude protein contents of Q. kelloggii (Duncan and Clawson 1980), Q. alba (Vogt and Cox 1970;Vogel 1990), Q. incana (Short 1976) were reported. Quercus acorns were declared to include many essential amino acids (Videl and Varela 1969;Luk'yanets 1978) and the quality of proteins as measured by the essential amino acid composition varied considerably among species (Boren et al 1995). Acorns varieties of 12 oak species from Texas were analysed for chemical and physical properties including crude protein and the results at the variety and species level showed significant differences (Ofcarcik and Burns 1971).…”

Section: Introductionmentioning

confidence: 99%

Total Protein and Amino acid Compositions in the Acorns of Turkish Quercus L. Taxa

Özcan

2006

Genet Resour Crop Evol

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Total protein content and level of 14 amino acid in mature acorns of 20 Quercus taxa from Turkey were studied. The range of total protein amounts between 2.75 and 8.44% were detected among taxa. Similar values in related species and variety level were observed. The amino acid profiles for each taxon were characteristically different and high variability of individual amino acid concentration was present at variety, subspecies and species levels. Different amino acid concentrations, relative percentages and critical values of some amino acids are thought to be additional considerable parameters for diagnosis of Quercus. Generally higher total quantity of amino acids in section Quercus and lower values in section Ilex were observed. When the essential and non-essential amino acids are expressed as a relative percent of total protein indicating quality of proteins, the ratios varied significantly among taxa (p < 0.05). But, no significant difference at section level were detected. Major amino acids were aspartic acid and glutamic acid showing the largest variations and the lowest levels were detected for methionine. Amino acid concentrations ranged from 1665 for aspartic acid to 13 mg/100 g dry wt. for methionine. All taxa had relatively higher amounts of leucin, lysin and valine than other essential amino acids. The highest quantity of protein and amino acids was recorded for Q. infectoria ssp. boissieri and the lowest for Q. pontica. The level of all essential amino acids in examined taxa was not sufficient compared to FAO scoring pattern for children (1985). But, threonine and valine in Q. infectoria ssp. boissieri and isoleucine in Q. petraea ssp. iberica show remarkable concentrations to the requirements. All examined essential amino acids among taxa generally provide adequate levels for adults according to FAO standard.

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Section: Introductionmentioning

confidence: 99%

Total Protein and Amino acid Compositions in the Acorns of Turkish Quercus L. Taxa

Özcan

2006

Genet Resour Crop Evol

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“…Tropic croton is an aggressive disseminator of seed and can mechanically propel seed over 2 m (S. D. Askew and J. W. Wilcut, personal observation), and birds commonly consume seeds of Croton spp. (Boren et al 1995), thus increasing seed immigration to other fields.…”

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confidence: 99%

Tropic croton interference in cotton

Askew¹,

Wilcut

2001

Weed Science

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Studies were conducted to determine the effect of interference between tropic croton (Croton glandulosus) and cotton (Gossypium hirsutum) on plant growth and productivity. Tropic croton height was not affected by weed density, but cotton height decreased with increased weed density 10 wk after planting. Tropic croton biomass per plant was not affected by weed density, but total weed biomass per meter of crop row increased with weed density. Cotton lint yield decreased linearly 2 kg ha−1 with each gram increase in weed dry biomass per meter of row. Percent yield loss–density relationship was described by the rectangular hyperbola model. Estimated coefficients A (maximum yield loss) and I (yield loss per unit density as density approaches zero) were 129.6 ± 42.2 and 35.6 ± 8.0%, respectively, when asymptotic iterations were based on least sums of squares. When A was constrained to 100% yield loss, I was 42.5 ± 5.1%. Results indicated that tropic croton was less competitive with cotton than many weeds but represents an economic threat to cotton growers.

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“…However, wild bobwhites have access to many natural foods that supply them with the necessary nutrients and essential amino acids (Wood et al 1986;Peoples et al 1994b;Boren et al 1995). For example, bobwhites consume more seeds to meet its energy expenditure needs during the winter months when sources of protein, such as insects, are much scarcer (Rollins 2007;Herna ´ndez and Guthery 2012).…”

Section: Protein and Amino Acidsmentioning

confidence: 99%

Supplemental feeding of northern bobwhite (

Henry

Brym²,

Henry³

et al. 2021

Wildl. Res.

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Northern bobwhites (Colinus virginianus) are a well known game bird that has been extensively studied and managed throughout its range for many decades. Despite this, bobwhites have continued a steady annual decline across the United States, irrespective of many well established conservation practices in place to mitigate this. Supplemental feeding is one such technique that is a widely used tool in bobwhite management, but the methods and results of the studies to investigate the effectiveness of this method are highly variable. The effectiveness of supplemental feeding practices is further hindered by the limited knowledge regarding the nutritional requirements of wild bobwhite because many of the guidelines that researchers follow are based on species of Galliformes that are primarily used for production. Here, we review supplemental feeding studies, nutritional requirements of bobwhite, and discuss future directions.

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Amino Acid Concentrations in Seed of Preferred Forages of Bobwhites

Cited by 9 publications

References 22 publications

Total Protein and Amino acid Compositions in the Acorns of Turkish Quercus L. Taxa

Total Protein and Amino acid Compositions in the Acorns of Turkish Quercus L. Taxa

Tropic croton interference in cotton

Supplemental feeding of northern bobwhite (

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