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Temporal and spatial variability in the nutritive value of pasture vegetation and supplement feedstuffs for domestic ruminants in Western Kenya

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Temporal and spatial variability in the nutritive value of pasture vegetation and supplement feedstuffs for domestic ruminants in Western Kenya. / Onyango, Alice Anyango; Dickhoefer, Uta; Rufino, Mariana Cristina et al.
In: Asian-Australasian Journal of Animal Sciences, Vol. 32, No. 5, 01.05.2019.

Research output: Contribution to Journal/MagazineJournal articlepeer-review

Harvard

Onyango, AA, Dickhoefer, U, Rufino, MC, Butterbach-Bahl, K & Goopy, JP 2019, 'Temporal and spatial variability in the nutritive value of pasture vegetation and supplement feedstuffs for domestic ruminants in Western Kenya', Asian-Australasian Journal of Animal Sciences, vol. 32, no. 5. https://doi.org/10.5713/ajas.18.0114

APA

Onyango, A. A., Dickhoefer, U., Rufino, M. C., Butterbach-Bahl, K., & Goopy, J. P. (2019). Temporal and spatial variability in the nutritive value of pasture vegetation and supplement feedstuffs for domestic ruminants in Western Kenya. Asian-Australasian Journal of Animal Sciences, 32(5). https://doi.org/10.5713/ajas.18.0114

Vancouver

Onyango AA, Dickhoefer U, Rufino MC, Butterbach-Bahl K, Goopy JP. Temporal and spatial variability in the nutritive value of pasture vegetation and supplement feedstuffs for domestic ruminants in Western Kenya. Asian-Australasian Journal of Animal Sciences. 2019 May 1;32(5). Epub 2018 Jul 26. doi: 10.5713/ajas.18.0114

Author

Onyango, Alice Anyango ; Dickhoefer, Uta ; Rufino, Mariana Cristina et al. / Temporal and spatial variability in the nutritive value of pasture vegetation and supplement feedstuffs for domestic ruminants in Western Kenya. In: Asian-Australasian Journal of Animal Sciences. 2019 ; Vol. 32, No. 5.

Bibtex

@article{d20c51471ed54704aa3ec80baab37ae0,
title = "Temporal and spatial variability in the nutritive value of pasture vegetation and supplement feedstuffs for domestic ruminants in Western Kenya",
abstract = "ObjectiveThe study aimed at quantifying seasonal and spatial variations in availability and nutritive value of herbaceous vegetation on native pastures and supplement feedstuffs for domestic ruminants in Western Kenya.MethodsSamples of herbaceous pasture vegetation (n = 75) and local supplement feedstuffs (n = 46) for cattle, sheep, and goats were collected in 20 villages of three geographic zones (Highlands, Mid-slopes, Lowlands) in Lower Nyando, Western Kenya, over four seasons of one year. Concentrations of dry matter (DM), crude ash (CA), ether extract (EE), crude protein (CP), neutral detergent fibre (NDF), gross energy (GE), and minerals were determined. Apparent total tract organic matter digestibility (dOM) was estimated from in vitro gas production and proximate nutrient concentrations or chemical composition alone using published prediction equations.ResultsNutrient, energy, and mineral concentrations were 52 to 168 g CA, 367 to 741 g NDF, 32 to 140 g CP, 6 to 45 g EE, 14.5 to 18.8 MJ GE, 7.0 to 54.2 g potassium, 0.01 to 0.47 g sodium, 136 to 1825 mg iron, and 0.07 to 0.52 mg selenium/kg DM. The dOM was 416 to 650 g/kg organic matter but differed depending on the estimation method. Nutritive value of pasture herbage was superior to most supplement feedstuffs, but its value strongly declined in the driest season. Biomass yields and concentrations of CP and potassium in pasture herbage were highest in the Highlands amongst the three zones.ConclusionAvailability and nutritive value of pasture herbage and supplement feedstuffs greatly vary between seasons and geographical zones, suggesting need for season- and region-specific feeding strategies. Local supplement feedstuffs partly compensate for nutritional deficiencies. However, equations to accurately predict dOM and improved knowledge on nutritional characteristics of tropical ruminant feedstuffs are needed to enhance livestock production in this and similar environments.",
keywords = "Feed Evaluation, Grazing Livestock, Pasture Herbage, Ruminant Nutrition, Seasonal Variation",
author = "Onyango, {Alice Anyango} and Uta Dickhoefer and Rufino, {Mariana Cristina} and Klaus Butterbach-Bahl and Goopy, {John Patrick}",
year = "2019",
month = may,
day = "1",
doi = "10.5713/ajas.18.0114",
language = "English",
volume = "32",
journal = "Asian-Australasian Journal of Animal Sciences",
publisher = "Asian-Australasian Association of Animal Production Societies",
number = "5",

}

RIS

TY - JOUR

T1 - Temporal and spatial variability in the nutritive value of pasture vegetation and supplement feedstuffs for domestic ruminants in Western Kenya

AU - Onyango, Alice Anyango

AU - Dickhoefer, Uta

AU - Rufino, Mariana Cristina

AU - Butterbach-Bahl, Klaus

AU - Goopy, John Patrick

PY - 2019/5/1

Y1 - 2019/5/1

N2 - ObjectiveThe study aimed at quantifying seasonal and spatial variations in availability and nutritive value of herbaceous vegetation on native pastures and supplement feedstuffs for domestic ruminants in Western Kenya.MethodsSamples of herbaceous pasture vegetation (n = 75) and local supplement feedstuffs (n = 46) for cattle, sheep, and goats were collected in 20 villages of three geographic zones (Highlands, Mid-slopes, Lowlands) in Lower Nyando, Western Kenya, over four seasons of one year. Concentrations of dry matter (DM), crude ash (CA), ether extract (EE), crude protein (CP), neutral detergent fibre (NDF), gross energy (GE), and minerals were determined. Apparent total tract organic matter digestibility (dOM) was estimated from in vitro gas production and proximate nutrient concentrations or chemical composition alone using published prediction equations.ResultsNutrient, energy, and mineral concentrations were 52 to 168 g CA, 367 to 741 g NDF, 32 to 140 g CP, 6 to 45 g EE, 14.5 to 18.8 MJ GE, 7.0 to 54.2 g potassium, 0.01 to 0.47 g sodium, 136 to 1825 mg iron, and 0.07 to 0.52 mg selenium/kg DM. The dOM was 416 to 650 g/kg organic matter but differed depending on the estimation method. Nutritive value of pasture herbage was superior to most supplement feedstuffs, but its value strongly declined in the driest season. Biomass yields and concentrations of CP and potassium in pasture herbage were highest in the Highlands amongst the three zones.ConclusionAvailability and nutritive value of pasture herbage and supplement feedstuffs greatly vary between seasons and geographical zones, suggesting need for season- and region-specific feeding strategies. Local supplement feedstuffs partly compensate for nutritional deficiencies. However, equations to accurately predict dOM and improved knowledge on nutritional characteristics of tropical ruminant feedstuffs are needed to enhance livestock production in this and similar environments.

AB - ObjectiveThe study aimed at quantifying seasonal and spatial variations in availability and nutritive value of herbaceous vegetation on native pastures and supplement feedstuffs for domestic ruminants in Western Kenya.MethodsSamples of herbaceous pasture vegetation (n = 75) and local supplement feedstuffs (n = 46) for cattle, sheep, and goats were collected in 20 villages of three geographic zones (Highlands, Mid-slopes, Lowlands) in Lower Nyando, Western Kenya, over four seasons of one year. Concentrations of dry matter (DM), crude ash (CA), ether extract (EE), crude protein (CP), neutral detergent fibre (NDF), gross energy (GE), and minerals were determined. Apparent total tract organic matter digestibility (dOM) was estimated from in vitro gas production and proximate nutrient concentrations or chemical composition alone using published prediction equations.ResultsNutrient, energy, and mineral concentrations were 52 to 168 g CA, 367 to 741 g NDF, 32 to 140 g CP, 6 to 45 g EE, 14.5 to 18.8 MJ GE, 7.0 to 54.2 g potassium, 0.01 to 0.47 g sodium, 136 to 1825 mg iron, and 0.07 to 0.52 mg selenium/kg DM. The dOM was 416 to 650 g/kg organic matter but differed depending on the estimation method. Nutritive value of pasture herbage was superior to most supplement feedstuffs, but its value strongly declined in the driest season. Biomass yields and concentrations of CP and potassium in pasture herbage were highest in the Highlands amongst the three zones.ConclusionAvailability and nutritive value of pasture herbage and supplement feedstuffs greatly vary between seasons and geographical zones, suggesting need for season- and region-specific feeding strategies. Local supplement feedstuffs partly compensate for nutritional deficiencies. However, equations to accurately predict dOM and improved knowledge on nutritional characteristics of tropical ruminant feedstuffs are needed to enhance livestock production in this and similar environments.

KW - Feed Evaluation

KW - Grazing Livestock

KW - Pasture Herbage

KW - Ruminant Nutrition

KW - Seasonal Variation

U2 - 10.5713/ajas.18.0114

DO - 10.5713/ajas.18.0114

M3 - Journal article

VL - 32

JO - Asian-Australasian Journal of Animal Sciences

JF - Asian-Australasian Journal of Animal Sciences

IS - 5

ER -