Grazing Behaviour of Exotic Dairy Cattle in Uganda

Mugerwa, J.S.; Christensen, D. A.; Ochetim, S.

doi:10.1080/00128325.1973.11662610

Cited by 16 publications

(9 citation statements)

References 14 publications

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“…We observed a statistically significant migration edge ( P < 2.2E-308) with the estimated weight of 11.4%; this edge provides evidence for the gene flow from European B. taurus (represented here by Jersey, Holstein, and Angus) into Ankole. In recent years, Ankole cattle have been increasingly crossbred with taurine breed including Holstein cattle which were first introduced to Uganda 50 years ago [ 30 ].…”

Section: Resultsmentioning

confidence: 99%

The genome landscape of indigenous African cattle

et al. 2017

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BackgroundThe history of African indigenous cattle and their adaptation to environmental and human selection pressure is at the root of their remarkable diversity. Characterization of this diversity is an essential step towards understanding the genomic basis of productivity and adaptation to survival under African farming systems.ResultsWe analyze patterns of African cattle genetic variation by sequencing 48 genomes from five indigenous populations and comparing them to the genomes of 53 commercial taurine breeds. We find the highest genetic diversity among African zebu and sanga cattle. Our search for genomic regions under selection reveals signatures of selection for environmental adaptive traits. In particular, we identify signatures of selection including genes and/or pathways controlling anemia and feeding behavior in the trypanotolerant N’Dama, coat color and horn development in Ankole, and heat tolerance and tick resistance across African cattle especially in zebu breeds.ConclusionsOur findings unravel at the genome-wide level, the unique adaptive diversity of African cattle while emphasizing the opportunities for sustainable improvement of livestock productivity on the continent.Electronic supplementary materialThe online version of this article (doi:10.1186/s13059-017-1153-y) contains supplementary material, which is available to authorized users.

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Section: Resultsmentioning

confidence: 99%

The genome landscape of indigenous African cattle

et al. 2017

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“…The average content of hemicelluloses was 18.95 ± 12.25 ranged from 10.39% in C. molle to 52.63% in G. tenax. The average ADF and ADL content of the browse plants were 37.49 ± 7.9 and 9.82 ± 1.12 and their ranges were 30.43% in A. leiocarpus to 56.38% in G. volensii for ADF and 7.50% in M. plymorpha L. to 11.67% in G. volensii for ADL, respectively. The averages IVDMD of the species were 59.30 ± 6.06 with the range of 50.98% in C. molle to 68.86% in Senna sp.…”

Section: Chemical Composition and In Vitro Dry Matter Digestibility (mentioning

confidence: 99%

“…Mugerwa et al [37] has reported that the digestibility values greater than 65% indicate good nutritive value and values below these level results in reduced in take due to lowered digestibility. So the digestibility of the browse species was lower than the threshold level indicated.…”

Section: Chemical Composition and In Vitro Dry Matter Digestibility Omentioning

confidence: 99%

Nutritional Characterization of Selected Fodder Species in Abol and Lare Districts of Gambella Region, Ethiopia

Megersa¹,

Mengistu²,

Asebe³

2017

J Nutr Food Sci

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In Ethiopia the commonly identified feed resource are natural pasture, crop residue, improved pasture and forages, agro-industrial by-products, other by-products like food and vegetable refusal, of which the first two contribute the largest share. This research was done with the objective of nutritional characterization of selected forage species in two districts of Gambella regional state Lare and Abol, Southwest Ethiopia. The study was done using a formal survey, focus group discussions and field observations followed by sample collection, chemical analysis and In vitro Dry Matter Digestibility (IVDMD) of selected grass and browse species. Purposive sampling was employed to select 90 Households (HHs) having livestock. Four grasses and 10 browses species were collected during November to December 2013 and their nutritive values were evaluated. The average Crude Protein (CP) was 11.51% for the grasses and 13.16% for the browses, respectively. The average neutral detergent fibre (NDF) content was 75.37% for grasses and 56.43% for browse species whereas the IVDMD of grasses and browses were 64.45% and 59.3%, respectively. The selected grasses and browse species were good potential as livestock feed in the area and is recommended if further analysis in more species and study sites in the area.

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“…The trend of differences among animal species in the in sacco DM degradability parameters and DM disappearance at different incubation hours of hand-plucked forage samples is largely consistent with variations in the chemical composition values. Generally, based on concentration of CP and NDF, and IVDMD values, the diets of camels can be classified as good quality and that of cattle as low quality ( Mugeriwa, Christianson & Ochetim, 1973 ; Norton, 1982 ; Van Soest, 1965 ), while that for small ruminants have a CP level more than the 7% required to satisfy maintenance requirement of ruminants ( Paterson, Cohran & Klopfenstein, 1996 ).…”

Section: Discussionmentioning

confidence: 99%

Grazing behavior, dietary value and performance of sheep, goats, cattle and camels co-grazing range with mixed species of grazing and browsing plants

Mohammed¹,

Animut²,

Urge

et al. 2020

Veterinary and Animal Science

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A study was conducted to assess grazing behavior (GB), dietary value and performance of co-grazing sheep, goats, cattle and camels with initial body weights (BW) of 20.6 ± 2.09, 16.6 ± 0.97, 96.8 ± 3.43 and 162.3 ± 21.28 kg, respectively. Grazing lasted 16 weeks, using 6 growing animals per animal species. Animals co-grazed 6 ha of range containing grass, forb and browse species. GB observations for position and activity were made during day light. In weeks 4, 8 and 14 hand-plucked forages similar to that being selected by animal species were sampled for laboratory evaluation. BW was measured initially and at 28-days interval. Time allotted for feed consumption (grazing plus browsing), ruminating and idle was similar among animal species. However, camels and goats spent lower time grazing and higher time browsing than sheep and cattle. The CP content of hand-plucked forages was highest for camels (16.8%), intermediate for sheep (9.3%) and goats (10.2%) and lowest for cattle (4.5%); while NDF values took opposite trend. The IVDMD contents of forages took the trend of CP contents and were 55.8, 51.0, 43.6 and 72.8% for sheep, goats, cattle and camels, respectively. Daily BW gain was 34, 31, 94 and 358 g/day and BW change as percentage of initial BW was 19, 22, 11 and 26% for sheep, goats, cattle and camels, respectively, the former was higher for camels and the latter was lower for cattle. These results indicated reduced dietary overlap among animal species and consequently greater animal yield through co-grazing than perhaps could have achieved through mono-species grazing.

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Grazing Behaviour of Exotic Dairy Cattle in Uganda

Cited by 16 publications

References 14 publications

The genome landscape of indigenous African cattle

The genome landscape of indigenous African cattle

Nutritional Characterization of Selected Fodder Species in Abol and Lare Districts of Gambella Region, Ethiopia

Grazing behavior, dietary value and performance of sheep, goats, cattle and camels co-grazing range with mixed species of grazing and browsing plants

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