Journal articles: 'Dairy farms – Zimbabwe'

1

Matope, G., E. Bhebhe, J. B. Muma, A. Lund, and E. Skjerve. "Herd-level factors for Brucella seropositivity in cattle reared in smallholder dairy farms of Zimbabwe." Preventive Veterinary Medicine 94, no. 3-4 (May 2010): 213–21. http://dx.doi.org/10.1016/j.prevetmed.2010.01.003.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Claudious, Gufe. "Isolation Of AspergillusFlavusfrom Dairy Cattle Feed And Assessment Of Aflatoxin M1 In Milk From Small Dairy Farms Around Harare, Zimbabwe." Advances in Microbiology Research 3, no. 1 (October 22, 2019): 1–7. http://dx.doi.org/10.24966/amr-694x/100009.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Matore, Z., P. Woods, and S. Kagler. "Risk factors and indicators of reduced welfare of grazing dairy cows from selected smallholder dairy farms in Midlands Province, Zimbabwe." Tropical Animal Health and Production 50, no. 5 (February 12, 2018): 1059–64. http://dx.doi.org/10.1007/s11250-018-1530-x.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Gufe, C., V. Bokosha, J. Marumure, Z. Makuvara, S. Manatsa, B. Mbonjani, I. Petzer, and P. V. Makaya. "Antibiotic Susceptibility of Mastitogenic Bacteria Isolated From Clinical Mastitis Cows in Midlands Province, Zimbabwe." Tanzania Veterinary Journal 35, no. 2 (April 12, 2021): 14–27. http://dx.doi.org/10.4314/tvj.v35i2.2.

Full text

Abstract:

Mastitis is a global challenge for the dairy industry and mastitogenic bacteria play a critical role among other causes. Many mastitogenic bacteria are becoming resistant to single or combination antibiotic therapy, making mastitis cases difficult to cure. Nevertheless, there is insufficient evidence on the occurrence and antibiotic resistance patterns of mastitogenic bacteria in commercial dairy and communal farms in the Midland Province of Zimbabwe that might support a holistic approach to mastitis mitigation. A cross-sectional study aimed to isolate and evaluate the antibiotic susceptibility patterns of mastitogenic bacteria from cattle with clinical mastitis was conducted. A total of 164 milk samples were analyzed, of which 36.6% (60) samples were collected from commercial farmers, and 63.4% (104) came from communal farmers. The samples were cultured on standard media and sensitivity patterns of the identified bacteria were tested against 14 antibiotics using the Kirby-Bauer disc diffusion method. All milk samples from communal farms were positive for mastitogenic bacteria compared to 88% (53) of mastitogenic positive milk samples from commercial farms. The most common microorganisms from all the 157-mastitogenic positive milk samples were Staphylococcus aureus (37.5%) and Escherichia coli (23.3%). The highest resistance was observed against Penicillin, Erythromycin, Ampicillin, and Lincomycin, whereas most isolates were susceptible to Sulphamethoxazole, gentamycin, neomycin, kanamycin, cloxacillin, ertapenem, ceftriaxone, Amp-Ampicillin, amikacin, vancomycin, and tetracycline. Futher research to investigate the significance of resistant mastogenic bacteria in terms of Veterinary costs, production losses and potential public health transmission of antibiotic resistant mastogenic bacteria is recommended

APA, Harvard, Vancouver, ISO, and other styles

5

Mosalagae, Diphetogo, Davies Mubika Pfukenyi, and Gift Matope. "Milk producers’ awareness of milk-borne zoonoses in selected smallholder and commercial dairy farms of Zimbabwe." Tropical Animal Health and Production 43, no. 3 (December 1, 2010): 733–39. http://dx.doi.org/10.1007/s11250-010-9761-5.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

Matope, Gift, Evison Bhebhe, John Bwalya Muma, James Oloya, Rachel L. Madekurozwa, Arve Lund, and Eystein Skjerve. "Seroprevalence of brucellosis and its associated risk factors in cattle from smallholder dairy farms in Zimbabwe." Tropical Animal Health and Production 43, no. 5 (February 14, 2011): 975–82. http://dx.doi.org/10.1007/s11250-011-9794-4.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

Paraffin, Annah Shingirai, Titus Jairus Zindove, and Michael Chimonyo. "Perceptions of Factors Affecting Milk Quality and Safety among Large- and Small-Scale Dairy Farmers in Zimbabwe." Journal of Food Quality 2018 (2018): 1–7. http://dx.doi.org/10.1155/2018/5345874.

Full text

Abstract:

The study investigated the perceptions of milk producers on milk quality and safety. Randomly selected large-scale farmers (n=158) and small-scale farmers (n=186) were surveyed using semistructured questionnaires. An ordinal logistic regression was used to estimate the probability of farmers considering milk quality and safety important. Large-scale farmers were 3 times more likely to consider that breed affects milk quality compared to their small-scale counterparts. Farmers aged over 30 years were 3 times more likely to indicate that hygiene affected milk quality. The likelihood of milk transportation affecting its quality was 4 times higher in small-scale farmers compared to large-scale producers. Postmilking contamination of milk was perceived to occur during transportation by small-scale farmers, whilst commercial farmers ranked storage as the important source of contamination after milking. Udder diseases were ranked first by large-scale farmers while small-scale farmers ranked milking environment as the major cause of milk spoilage. The likelihood of milk safety being important was two times higher in large farms compared to small-scale farms. Intervention programmes on milk safety should mainly target small-scale dairy farmers since they are less concerned about milk quality and safety.

APA, Harvard, Vancouver, ISO, and other styles

8

Mhone, Tryness Anastazia, Gift Matope, and Petronella Tapiwa Saidi. "Detection ofSalmonellaspp.,Candida albicans,Aspergillusspp., and Antimicrobial Residues in Raw and Processed Cow Milk from Selected Smallholder Farms of Zimbabwe." Veterinary Medicine International 2012 (2012): 1–5. http://dx.doi.org/10.1155/2012/301902.

Full text

Abstract:

A cross-sectional study was conducted to detect the presence ofSalmonellaspp.,Candida albicans,Aspergillusspp., and antimicrobial residues in raw milk (n=120) and processed cow milk (n=20) from smallholder dairy farms from three sites in Zimbabwe. Culture and isolation ofSalmonellaspp.,C. albicans, andAspergillusspp. were performed using selective media, while antimicrobial residues were detected by a dye reduction test. NoSalmonella, butC. albicans(17.5%; 21/120),Aspergillusspp. (0.8%; 1/120), and antimicrobial residues (2.5%; 3/120) were detected from raw milk.C. albicanswas isolated from all three sites, whileAspergillusspp. and antimicrobial residues were detected from sites 1 and 3, respectively. From processed milk, onlyC. albicans(5%) was isolated whileAspergillusspp. and antimicrobial residues were not detected. These results suggested low prevalence ofSalmonellaspp. andAspergillusspp. and a relatively high prevalence ofC. albicansin raw milk from the smallholder farms. The potential public health risks ofC. albicansand the detected antimicrobial residues need to be considered. Thus, educating farmers on improving milking hygiene and storage of milk and establishing programmes for monitoring antimicrobial residues may help to improve the safety of milk from smallholder farms.

APA, Harvard, Vancouver, ISO, and other styles

9

Mhone, Tryness A., Gift Matope, and Petronella T. Saidi. "Aerobic bacterial, coliform, Escherichia coli and Staphylococcus aureus counts of raw and processed milk from selected smallholder dairy farms of Zimbabwe." International Journal of Food Microbiology 151, no. 2 (December 2011): 223–28. http://dx.doi.org/10.1016/j.ijfoodmicro.2011.08.028.

Full text

APA, Harvard, Vancouver, ISO, and other styles

10

Paraffin, Annah S., Titus J. Zindove, and Michael Chimonyo. "Effect of Structural Condition of Milk Processing Facilities and Food Safety Systems on Escherichia coli and Coliforms Presence in Cultured Buttermilk." Journal of Food Quality 2019 (September 24, 2019): 1–8. http://dx.doi.org/10.1155/2019/7365983.

Full text

Abstract:

The study investigated the effect of structural conditions of milk processing facilities and food safety systems on E. coli and coliform presence in buttermilk. Milk records collected by Dairy Services Zimbabwe (DSZ) from large-scale dairy milk processors (n=12) and small-scale farms (n=15) were analysed. Binomial logistic regression was used to estimate the likelihood of E. coli or coliforms being present in cultured buttermilk as a function of the hygiene level and structural adequacy of the processors. The likelihood of having E. coli and coliforms in cultured milk from processors with poor sanitary premises was two times higher than that from processors with good sanitary premises (P<0.05). Milk processors that used unfiltered water were 1.77 times more likely to produce cultured buttermilk contaminated with E. coli (P<0.05). Processors without food safety systems like hazard analysis critical control point (HACCP) systems were more than twice likely to produce cultured buttermilk contaminated by E. coli and coliforms (P<0.05). Poor structural condition of roofs, windows, insect-proof screens, and drainage in small- and large-scale processing facilities results in production of cultured buttermilk that is contaminated by E. coli and coliforms.

APA, Harvard, Vancouver, ISO, and other styles

11

du Preez, J. J., M. J. F. Jarvis, D. Capatos, and J. de Kock. "A note on growth curves for the ostrich (Struthio camelus)." Animal Science 54, no. 1 (February 1992): 150–52. http://dx.doi.org/10.1017/s0003356100020687.

Full text

Abstract:

The Gompertz equation was used to compute growth curves for three groups of ostriches (Struthio camelus), from Oudtshoorn in South Africa, the Namib desert in Namibia and from Zimbabwe. All were reared under typical intensive farm conditions with ad libitum feeding. There were no significant differences in mature mass between regions but the maximum daily weight gain for males occurred later (day 163) for Oudtshoorn birds, compared with day 121 for Namibian and day 92 for Zimbabwean. Oudtshoorn females reached maximum rate of gain on day 175 compared with day 115 for Namibian and day 114 for Zimbabwean. Comparisons might prove important when planning programmes for the genetic improvement of commercial flocks, but possible influences of food composition and environment should be investigated.

APA, Harvard, Vancouver, ISO, and other styles

12

Mushore, Washington. "THE REPORTAGE OF LAND AND OWNERSHIP IN SELECTED PRIVATE MEDIA IN ZIMBABWE." Latin American Report 30, no. 2 (July 20, 2016): 30–40. http://dx.doi.org/10.25159/0256-6060/1238.

Full text

Abstract:

The aim of this article is to scrutinise how the concepts of land and land ownership were discussed in the private media in Zimbabwe during the Zimbabwe land reform exercise – dubbed ‘the third Chimurenga’ that took place in the period 2000–2008. Using textual analysis, the articles argues that ownership of land, according to the so called ‘private or independent’ newspapers in Zimbabwe was supposed to be accorded to the farmer or person, regardless of the racial bias, who was more productive on the land and who was contributing more to the economic well-being of the nation (Zimbabwe). Accordingly, the private newspapers in Zimbabwe regarded land as belonging to, or as the rightful property of the white commercial farmers/settlers because they perceived them to be more productive on the land than the native people of Zimbabwe who were ultimately seen and labelled as invaders on the so-called white commercial farms. In order to substantiate the above claims and arguments, a number of The Daily News stories of the period were purposively sampled and are used as examples.

APA, Harvard, Vancouver, ISO, and other styles

13

Buvanendran, V. "Adjustment factors for weaning weights of Mashona cattle in Zimbabwe." Journal of Agricultural Science 114, no. 1 (January 1990): 35–40. http://dx.doi.org/10.1017/s0021859600070969.

Full text

Abstract:

SUMMARYThe effects of year of birth, age of dam, sex of calf, month of birth and weaning age on weaning weights of Mashona calves on six commercial farms in Zimbabwe were estimated by least squares procedures from data of 6365 calves born 1977–85. The least squares mean weight at 205 days among farms ranged from 123 to 159 kg while the linear regression coefficients of weight on age ranged from 0·31 to 0·46 kg. Adjustment for weaning age by the average daily gain from birth to weaning failed to remove the dependence of adjusted weight on age. Sex was the most important source of variation and the mean difference between male and female calves was 12·9 kg. Sex difference was markedly influenced by herd production rate, being greater in herds of above average production.Weights of calves of 3-, 4- and > 11-year-old dams deviated from those of dams aged 5–10 years (mature) by 14·5, 8·5 and 2·9 kg, respectively. Herd mean influenced the difference between 3-year-old and mature dams, the difference increasing as herd mean declined. Herd-year specific factors seem more appropriate for sex and 3-year-old dams and an annual crop of > 50 calves would confer an advantage to herd-specific over general adjustment factors. On the basis of equality of variances within subclasses, multiplicative factors were superior to additive factors for sex of calf and month of birth; both types of adjustment were suitable for age of dam.

APA, Harvard, Vancouver, ISO, and other styles

14

Stein, Masunda, and Rudo Chiweshe Amanda. "A stochastic frontier analysis on farm level technical efficiency in Zimbabwe: A case of Marirangwe smallholder dairy farmers." Journal of Development and Agricultural Economics 7, no. 6 (June 30, 2015): 237–42. http://dx.doi.org/10.5897/jdae2014.0630.

Full text

APA, Harvard, Vancouver, ISO, and other styles

15

Gran, H. M., A. N. Mutukumira, A. Wetlesen, and J. A. Narvhus. "Smallholder dairy processing in Zimbabwe: hygienic practices during milking and the microbiological quality of the milk at the farm and on delivery." Food Control 13, no. 1 (January 2002): 41–47. http://dx.doi.org/10.1016/s0956-7135(01)00082-2.

Full text

APA, Harvard, Vancouver, ISO, and other styles

16

Pathiraja, N., K. T. Mandisodza, and L. Nyabako. "Evaluation of the performance of british landrace pigs under tropical conditions of zimbabwe." Proceedings of the British Society of Animal Production (1972) 1989 (March 1989): 87. http://dx.doi.org/10.1017/s0308229600010795.

Full text

Abstract:

British Landrace (BL) is used widely as a dam breed in producing crossbred sows for commercial pig production in Zimbabwe. This study was undertaken to evaluate the performance of BL under current level of management in Zimbabwe and to make recommendation for improvement of productivity.The records for this study were obtained from a nucleus/multiplier farm. The data included 720 litters from BL sows over the five year period 1983 - 1987. The reproductive traits analysed, number born alive (NBA), number weaned (NW), total litter weight at birth (TLWB) kg, at weaning (TLWW), age at first litter (AFL) days, days weaning to effective service (DWES) and farrowing interval (FI) days, were from both pure and crossbred matings. The performance data, daily gain (DG) and food conversion ratio (FCR) between 35 - 86 kg and k backfat thickness (BF) at 86 kg, were from 620 performance tested BL pigs. The data were analysed by least-squares procedures. The fixed effect included in the analysis of reproductive traits were the sire breed of the litter, the dam parity and the year and season of birth of litter. The effects considered for the performance data were the year and season of performance test and the sex. The season according to month of birth of litter, farrowing, rebreedlng or performance test was classified as cold (April - July), dry (August - November) or rainy (December - March). For all the traits, typical model included the above fixed effects and two-way Interactions.

APA, Harvard, Vancouver, ISO, and other styles

17

Murungu, F. S., C. Chiduza, P. Nyamugafata, L. J. Clark, W. R. Whalley, and W. E. Finch-Savage. "Effects of ‘on-farm seed priming’ on consecutive daily sowing occasions on the emergence and growth of maize in semi-arid Zimbabwe." Field Crops Research 89, no. 1 (September 2004): 49–57. http://dx.doi.org/10.1016/j.fcr.2004.01.020.

Full text

APA, Harvard, Vancouver, ISO, and other styles

18

Katsande, Simbarashe, Gift Matope, Masimba Ndengu, and Davies M. Pfukenyi. "Prevalence of mastitis in dairy cows from smallholder farms in Zimbabwe." Onderstepoort J Vet Res 80, no. 1 (March 4, 2013). http://dx.doi.org/10.4102/ojvr.v80i1.523.

Full text

Abstract:

A cross-sectional study was conducted to determine the prevalence of sub-clinical and clinical mastitis and the associated factors in cows from selected smallholder dairy farms in Zimbabwe. Physical examinations were conducted on all lactating cows for evidence of signs of clinical mastitis. Composite milk samples were collected from all lactating cows for bacterial culture and somatic cell counting. Cows were categorised as clinical if they exhibited clinical features of mastitis, or sub-clinical if no apparent signs were present but they had a positive bacterial isolation and a somatic cell count of at least 300 x 103 cells/mL. Farm-level factors were obtained through a structured questionnaire. The association of mastitis and animal- and herd-level factors were analysed using logistic regression. A total of 584 animals from 73 farms were tested. Overall, 21.1%(123/584) had mastitis, 16.3%(95/584) had sub-clinical mastitis and 4.8% (28/584) had clinical mastitis. Herd-level prevalence was 49.3%. Coagulase-negative staphylococci (27.6%), Escherichia coli (25.2%), Staphylococcus aureus(16.3%), Klebsiella spp. (15.5%) and Streptococcus spp. (1.6%) were the most common isolates. In individual cows, pure dairy herds (OR = 6.3) and dairy crosses (OR = 3.1) were more likely to have mastitis compared to Mashona cows. Farms that used pre-milking teat dipping were associated with reduced mastitis prevalence. Further research is needed on the prevalence of mastitis and a comparison of data for both smallholder and commercial dairy farms in all regions of Zimbabwe should be undertaken.

APA, Harvard, Vancouver, ISO, and other styles

19

Nleya, Nancy, Lubanza Ngoma, Modupeade C. Adetunji, and Mulunda Mwanza. "Biodiversity of Aflatoxigenic Aspergillus Species in Dairy Feeds in Bulawayo, Zimbabwe." Frontiers in Microbiology 11 (January 21, 2021). http://dx.doi.org/10.3389/fmicb.2020.599605.

Full text

Abstract:

The presence of molds, especially certain species of Aspergillus, in food commodities may contribute to aflatoxin contamination. The aim of this study was to determine the biodiversity of Aspergillus species in dairy feeds from farms in select locations in Zimbabwe and assess their aflatoxin production potential using a polyphasic approach. A total of 96 feed samples were collected, which consisted of dairy feed concentrate, mixed ration, brewers’ spent grain, and grass from 13 farms during the dry season (August–October, 2016) and the following rainy season (January–March, 2017). A total of 199 presumptive isolates representing four sections from genus Aspergillus (Nigri, Fumigati, Flavi, and Circumdati) were recovered from the feeds. Section Flavi, which includes several aflatoxin producers, constituted 23% (n = 46) of the isolates. Species from this section were A. flavus, A. nomius, A. oryzae, A. parasiticus, and A. parvisclerotigenus, and 39 (84.4%) of these showed evidence of aflatoxin production in plate assays. Of the 46 section Flavi isolates examined, some lacked one or more of the five targeted aflatoxin cluster genes (aflD, aflR, aflS, aflM, and aflP). The presence of the five genes was as follows: aflD (76.9%), aflR (48.7%), aflS (74.4%), aflM (64.1%), and aflP (79.5%). This study highlights the species diversity of aflatoxigenic fungi that have the potential to contaminate different types of feed for dairy cows. Our findings underscore the importance of preventing contamination of feedstuffs by these fungi so that aflatoxins do not end up in the diets of consumers.

APA, Harvard, Vancouver, ISO, and other styles

20

Chiwome, Bernard, Erick Kandiwa, Borden Mushonga, Shepherd Sajeni, and Gervais Habarugira. "A study of the incidence of milk fever in Jersey and Holstein cows at a dairy farm in Beatrice, Zimbabwe." Journal of the South African Veterinary Association 88 (April 11, 2017). http://dx.doi.org/10.4102/jsava.v88i0.1457.

Full text

Abstract:

A 3-year prospective study investigated the incidence of milk fever in Jersey and Holstein cows at a commercial dairy farm in Beatrice, Zimbabwe. The overall incidence of milk fever at the farm was 7.98%. Incidence of milk fever in Jerseys (14.78%) was significantly higher (p < 0.05) than that in Holsteins (4.82%). Incidence of milk fever in Jerseys beyond their fourth parity (24.85%) was significantly higher (p < 0.05) than that in Jerseys in their second (5.90%), third (6.49%) and fourth (8.73%) parities. Incidence of milk fever in Holsteins beyond their fourth parity (8.29%) was significantly higher (p < 0.05) than that in Holsteins in their second (1.43%), third (1.82%) and fourth (2.91%) parities. No significant difference existed in milk fever incidences between the second, third and fourth parities in either Jersey or Holstein cows. Incidence of milk fever in Jersey cows producing over 6114 litres per 305-day lactation (27.07%) was significantly higher than that in Jerseys producing less than 6114 litres of milk per 305-day lactation (p < 0.05). Incidence of milk fever in Holsteins producing more than 9149 litres per 305-day lactation (10.49%) was significantly higher than that in Holsteins producing less than 9149 litres of milk per 305-day lactation (p < 0.05). No significant difference existed between incidences of milk fever between the first, second and third quartile producers (p > 0.05) in either Jersey or Holstein cows. This study confirms that the risk of developing milk fever is higher in Jerseys and also increases with increasing parity and higher levels of milk production in both breeds, thus advocating for special considerations when dairy cows fit these criteria.

APA, Harvard, Vancouver, ISO, and other styles

Journal articles on the topic 'Dairy farms – Zimbabwe'

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles