scholarly journals Effects of the Management of Extensive Beef Grazing Systems on the Mitigation of Greenhouse Gas Emissions in Semi-arid Rangelands of Central Argentina

2018 ◽  
Author(s):  
María I. Nieto ◽  
Olivia Barrantes ◽  
Liliana Privitello ◽  
Ramón Reiné
Keyword(s):  
Management Practices ◽  
Linear Models ◽  
Ghg Emissions ◽  
Farm Management ◽  
Forage Crops ◽  
Central Argentina ◽  
Livestock Sector ◽  
Arid Rangelands ◽  
On Farm ◽  
Semi Arid

The livestock sector can be a major contributor to the mitigation of greenhouse (GHG) emissions. Within the sector, beef production produces the largest proportion of the livestock sector’s direct emissions. The objective of this study was to assess the on-farm GHG emissions in semi-arid rangelands in Argentina and to identify the relationships between emissions and current farm management practices. A survey recorded detailed information on farm management and characteristics. Assessments of GHG emissions were based on the IPCC Tier 2 protocols [1]. The relationships between farm management and GHG emissions were identified using General Linear Models. Cluster analysis was used to identify groups of farms that differed from others in emissions and farm characteristics. Emissions per product sold were low on farms that had improved livestock care management, rotational grazing, received technical advice, and had high animal and land productivities. Emissions per hectare of farmland were low on farms that had low stocking rates, low number of grazing paddocks, little or no land dedicated to improved pastures and forage crops, and low land productivity. Our results suggest that the implementation of realistic, relatively easy-to-adopt farming management practices has considerable potential for mitigating GHG emissions in semi-arid rangelands of central Argentina.

scholarly journals Greenhouse Gas Emissions from Beef Grazing Systems in Semi-Arid Rangelands of Central Argentina

2018 ◽  
Vol 10 (11) ◽  
pp. 4228 ◽  
Author(s):  
María Nieto ◽  
Olivia Barrantes ◽  
Liliana Privitello ◽  
Ramón Reiné
Keyword(s):  
Greenhouse Gas ◽  
Management Practices ◽  
Ghg Emissions ◽  
Farm Management ◽  
Forage Crops ◽  
Central Argentina ◽  
Arid Rangelands ◽  
On Farm ◽  
The Relationship ◽  
Semi Arid

The livestock sector can be a major contributor to the mitigation of greenhouse gas (GHG) emissions. Within the sector, beef production produces the largest proportion of the livestock sector’s direct emissions. The objective of this study was to assess the on-farm GHG emissions in semi-arid rangelands in Argentina and to identify the relationship between emissions and current farm management practices. A survey recorded detailed information on farm management and characteristics. Assessments of GHG emissions were based on the Intergovernmental Panel on Climate Change (IPCC) Tier 2 protocols. The relationship between farm management and GHG emissions were identified using general linear models. Cluster analysis was used to identify groups of farms that differed from others in emissions and farm characteristics. Emissions per product sold were low on farms that had improved livestock care management, rotational grazing, received technical advice, and had high animal and land productivities. Emissions per hectare of farmland were low on farms that had low stocking rates, a low number of grazing paddocks, little or no land dedicated to improved pastures and forage crops, and low land productivity. Our results suggest that the implementation of realistic, relatively easy-to-adopt farming management practices has considerable potential for mitigating the GHG emissions in the semi-arid rangelands of central Argentina.

scholarly journals Performance Evaluation of Kuroiler and Sasso Chicken Breeds Reared under On-farm and On-station Management Conditions in Tanzania

2021 ◽  
Vol 3 (2) ◽  
pp. 53-59
Author(s):  
Fadhili S. Guni ◽  
Said H. Mbaga ◽  
Andalwisye M. Katule
Keyword(s):  
Body Weight ◽  
Egg Production ◽  
Linear Models ◽  
Farm Management ◽  
General Effect ◽  
Production Traits ◽  
Gxe Interaction ◽  
Live Body Weight ◽  
Egg Production Rate ◽  
On Farm

A study was conducted to evaluate the effect of management, breed, and their interaction on growth performance, egg production, and survivability under on-station and on-farm management conditions in Tanzania. A total of 1200 chicks, 600 for each breed, Kuroiler, and Sasso of mixed sexes were used. Birds under on-station management were confined and fed commercial ration throughout the experiment while those under on-farm management were allowed to semi-scavenge and supplemented with available feeds in the household. Brooding was carried out on-station for six weeks. Thereafter, birds were sub-divided for on-station and on-farm evaluation where data on body weight, egg production traits, and survival rate were taken at different ages from week 6 up to 52. The General Linear Models procedure fitting management, breed, and interaction between management and breed was used to analyze the data. Results show that management conditions had a significant influence on the performance of the breeds. Birds reared on-station performed better in all traits measured than those reared on-farm. The general effect of the breed was significant only for hen-day egg production (HDEP %) and hen-housed egg production (HHEP) in favour of Sasso chickens. Similarly, Sasso was more efficient at converting feed to live body weight. Interactions between management and breed were observed for all traits except peak egg production rate and mortality rate. While Sasso performance was better than that of Kuroiler on body weight, age at first egg, HDEP, age at peak egg production, and HHEP under the on-station management system, their performance in these traits were similar under the on-farm management except for body weight and age at first egg where Kuroiler was superior to Sasso. The survivability was also higher for Kuroiler than for Sasso under both management systems. It is concluded that genotype by environment (GxE) interaction had significant effects on the performance of the two breeds thus, a need to consider such effect when promoting them for either on-station or on-farm rearing.

scholarly journals A Survey of Farm Management Practices Relating to the Risk Factors, Prevalence, and Causes of Lamb Mortality in Ireland

Animals ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 30
Author(s):  
Dwayne Shiels ◽  
Jason Loughrey ◽  
Cathy M. Dwyer ◽  
Kevin Hanrahan ◽  
John F. Mee ◽  
...  
Keyword(s):  
Risk Factors ◽  
Birth Weight ◽  
Management Practices ◽  
Farm Management ◽  
Full Time ◽  
Gross Margin ◽  
Factors Associated ◽  
Key Factor ◽  
Farm Survey ◽  
On Farm

Lamb mortality is a key factor influencing ewe productivity and profitability. The current study investigated risk factors associated with and management practices implemented on sheep farms to reduce lamb mortality. A survey consisting of 13 multiple-part questions (57 separate questions) was administered to all sheep farmers participating in the Teagasc National Farm Survey, representative of the Irish national population of sheep farms. A total of 60% of respondents identify mating or lambing date, and this practice tended to be associated with reduced lamb mortality (1.2%, p = 0.08). Individual lambing pens were used by 88% of farmers, but 26% did not clean or disinfect them. A total of 79% and 9.5% of farmers applied iodine to all lambs’ navels and administered antibiotics to all lambs to treat and/or prevent diseases, respectively. Most farmers vaccinated their ewes (86%) and lambs (79%) against clostridial diseases and/or pasteurellosis; 13% vaccinated against abortion agents. Lamb mortality tended to be lower (Kruskal–Wallis (KW) = 2.749; p = 0.09) on farms that used stomach tubing, heat box, iodine, hospital, and individual pens compared with farms that do not implement all those practices. Predators, lamb birth weight, and diseases were perceived by respondents to be the three main causes of live-born lamb mortality. The gross margin is significantly higher on lowland farms by €37 per ewe compared with hill farms (Kruskal–Wallis (KW) = 4.056; p < 0.001). The combination of full-time farming and the use of hospital and individual pens improved gross margin (€18/ewe, p = 0.028). It is concluded that on-farm management practices affect both lamb mortality and flock gross margin.

Multivariate classification of farming systems for use in integrated pest management studies

1999 ◽  
Vol 79 (4) ◽  
pp. 647-654 ◽  
Author(s):  
J. Y. Leeson ◽  
J. W. Sheard ◽  
A. G. Thomas
Keyword(s):  
Management Practices ◽  
Farming Systems ◽  
Minimum Variance ◽  
Farm Management ◽  
Management Systems ◽  
Multivariate Techniques ◽  
Organic Systems ◽  
On Farm ◽  
The Impact

On-farm studies provide a realistic setting to examine the impact of interactions of management practices on weed communities within various farming systems. Clustering farm units into groups that use similar management practices enables the replication of farm management systems within on-farm studies. The goal of this study is to objectively classify farm units into management systems on the basis of quantitative variables describing aspects of cropping history and chemical input levels using multivariate techniques. Twenty-eight Saskatchewan farmers provided details of their management practices from 1990 to 1997 through a series of questionnaires. Twelve variables derived from the questionnaires were used to describe cropping history, pesticide, tillage and fertilizer use on each farm unit. These variables were used to cluster farm units using minimum variance classification and NMS ordination. Both techniques identified seven farm management systems. The greatest differences were observed between organic and non-organic systems. Farm management systems that used annual fallow and continuous annual cropping histories were most similar. The consistent results obtained by use of the two unrelated methodologies indicate the utility of this approach for the classification of farm management systems. Key words: Farm management system, classification, cropping history, chemical input level, on-farm

The association between bulk tank milk analysis for raw milk quality and on-farm management practices

2010 ◽  
Vol 95 (1-2) ◽  
pp. 32-40 ◽  
Author(s):  
A.M. Elmoslemany ◽  
G.P. Keefe ◽  
I.R. Dohoo ◽  
J.J. Wichtel ◽  
H. Stryhn ◽  
...  
Keyword(s):  
Management Practices ◽  
Raw Milk ◽  
Farm Management ◽  
Milk Quality ◽  
Milk Analysis ◽  
Bulk Tank Milk ◽  
Bulk Tank ◽  
On Farm

scholarly journals Influence of woody species on aerial growth of perennial grasses in semi-arid rangelands of central Argentina

Phyton ◽  
2014 ◽  
Vol 83 (1) ◽  
pp. 397-405
Author(s):  
Blazquez FR ◽  
DV Pel醗z ◽  
RJ ◽  
rioli ◽  
OR Elia
Keyword(s):  
Woody Species ◽  
Perennial Grasses ◽  
Central Argentina ◽  
Aerial Growth ◽  
Arid Rangelands ◽  
Semi Arid

Impact of Chemical Weed Control on Farm Management Practices

1963 ◽  
pp. 161-210 ◽  
Author(s):  
W.B. Ennis ◽  
W.C. Shaw ◽  
L.L. Danielson ◽  
D.L. Klingman ◽  
F.L. Timmons
Keyword(s):  
Weed Control ◽  
Management Practices ◽  
Farm Management ◽  
On Farm
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