Effect of abiotic and biotic factors on subclinical mastitis occurrence in low-input dairy sheep production systems

2021 ◽  
Vol 198 ◽  
pp. 106341
Author(s):  
N. Tzanidakis ◽  
C.N. Brozos ◽  
N. Voutzourakis ◽  
A. Stefanakis ◽  
E. Malama ◽  
...  
Keyword(s):  
Production Systems ◽  
Subclinical Mastitis ◽  
Biotic Factors ◽  
Dairy Sheep ◽  
Low Input ◽  
Sheep Production ◽  
Abiotic And Biotic Factors

Environmental performances of Sardinian dairy sheep production systems at different input levels

2015 ◽  
Vol 502 ◽  
pp. 354-361 ◽  
Author(s):  
E. Vagnoni ◽  
A. Franca ◽  
L. Breedveld ◽  
C. Porqueddu ◽  
R. Ferrara ◽  
...  
Keyword(s):  
Production Systems ◽  
Dairy Sheep ◽  
Sheep Production

Management and productivity of dairy sheep production systems in Castilla-La Mancha, Spain

2017 ◽  
Vol 149 ◽  
pp. 62-72 ◽  
Author(s):  
Martiña Morantes ◽  
Rafaela Dios-Palomares ◽  
María Elena Peña ◽  
José Rivas ◽  
José Perea ◽  
...  
Keyword(s):  
Production Systems ◽  
Dairy Sheep ◽  
La Mancha ◽  
Sheep Production

scholarly journals Genome-Wide Association Study Identifies New Candidate Markers for Somatic Cells Score in a Local Dairy Sheep

2021 ◽  
Vol 12 ◽  
Author(s):  
Anna Maria Sutera ◽  
Angelo Moscarelli ◽  
Salvatore Mastrangelo ◽  
Maria Teresa Sardina ◽  
Rosalia Di Gerlando ◽  
...  
Keyword(s):  
Genome Wide Association Study ◽  
Production Systems ◽  
Somatic Cells ◽  
Genome Wide Association ◽  
Dairy Sheep ◽  
Genome Wide ◽  
Independent Population ◽  
Guarantee Income ◽  
Sheep Production ◽  
Genomic Regions

In the Mediterranean basin countries, the dairy sheep production is usually based on local breeds, which are very well-adapted to their production systems and environments and can indeed guarantee income, employment, and economic viability in areas where production alternatives are scarce or non-existent. Mastitis is still one of the greatest problems affecting commercial milk production. However, genetic evaluation of mastitis is particularly difficult because of its low heritability and the categorical nature of the trait. The aim of this study was to identify genomic regions putatively associated with somatic cells count (SCC) in the local economically important Valle del Belice sheep breed using of deregressed breeding values (DEBV) as response variables. All the samples were genotyped using the Illumina OvineSNP50K BeadChip. Genome-wide association analysis was carried out based on regression of DEBV. A total of eight markers were found to be significantly associated with log-transformed SCC. Several candidate genes associated with SCC were identified related to immunity system and udder conformation. The results can help improving the competitiveness of the local Valle del Belìce breed. Further studies considering a higher sample size or independent population will be needed to confirm our results.

Lamb eimeriosis: Applied treatment protocols in dairy sheep production systems

2013 ◽  
Vol 196 (1-2) ◽  
pp. 56-63 ◽  
Author(s):  
Anastasios Saratsis ◽  
Isidoros Karagiannis ◽  
Christos Brozos ◽  
Evagellos Kiossis ◽  
Nikolaos Tzanidakis ◽  
...  
Keyword(s):  
Production Systems ◽  
Dairy Sheep ◽  
Treatment Protocols ◽  
Sheep Production

scholarly journals Tick loads in Bos taurus cattle grazing in two contrasting production systems

2016 ◽  
pp. 5404-5415
Author(s):  
Raquel Salazar B ◽  
Rolando Barahona-Rosales ◽  
María Solange Sánchez P
Keyword(s):  
Leucaena Leucocephala ◽  
Production Systems ◽  
Bos Taurus ◽  
Abiotic Factors ◽  
Boophilus Microplus ◽  
Biotic Factors ◽  
High Productivity ◽  
Abiotic And Biotic Factors ◽  
Tick Counts ◽  
Tick Load

Objectives. To relate the effect of biotic and abiotic factors on Rhipicephalus (Boophilus) microplus tick loads on cows grazing either in intensive silvopastoral systems (ISS) (Lucerna) or in grass pastures associated with sugarcane plantations (La Isabela). Materials and methods. Tick counts were performed on 27 Lucerne breed animals that were in different physiological states, six of which were grazing on forage grass paddocks associated with commercial sugarcane plantations and the remaining animals grazed in an ISS based on Leucaena leucocephala and Cynodon plectostachyus. The tick counts were made every 15 days. The data of temperature, humidity, and radiation were taken from a weather station that was inside the ISS. Results. There was a weak relationship between saturation deficit and tick load (R2=0.34) and another between UV radiation and tick load (R2=0.205) for animals grazing in ISS. There were differences in tick counts when comparing animals of similar productivity from both systems evaluated: in La Isabela (sugarcane grass paddocks) average counts were 311 ticks perceptible to the touch (TPT) and in Lucerna (ISS farm) average counts were 206 TPT (p= 0.02). Additionally, there were greater tick counts in high productivity cows compared to low productivity cows. Conclusions. The abiotic and biotic factors of the ecosystem and animal productivity can affect the TPT counts. In ISS systems, tick counts can be lower than those observed in monoculture grazing systems.Objetivos. Relacionar el efecto de algunos factores bioticos y abioticos sobre las cargas de la garrapata Rhipicephalus (Boophilus) microplus en hembras bovinas que pastorean en sistemas silvopastoriles intensivos (SSPi)(Lucerna) y en monocultivos asociados a cañaduzales (La Isabela). Materiales y métodos. Se realizaron conteos en 27 animales de raza Lucerna en diferentes estados fisiológicos, seis de los cuales se encontraban pastoreando en lotes de gramíneas forrajeras asociados con plantaciones de caña comerciales y los animales restantes pastoreaban en SSPi basados en Leucaena leucocephala y Cynodon plectostachyus. El conteo de garrapatas se efectuó cada 15 días. Los datos de temperatura, humedad y radiación se tomaron de una estación meteorológica que se encontraba en el interior del SSPi. Resultados. Se encontró una relación débil entre el déficit de saturación y los conteos de garrapatas (R2=0.34) y entre la radiación UV y los conteos de garrapatas (R2=0.205) para los bovinos pastoreando en SSPi. Hubo diferencia entre los conteos en animales con similar productividad en ambos sistemas evaluados; siendo el promedio total de garrapatas perceptibles al tacto (GPT) de 311 para La Isabela y de 206 GPT para Lucerna (p=0.02). Hubo mayor número de GPT en hembras con mayor productividad en comparación con las de baja productividad (p<0.05). Conclusiones. Los factores bióticos y abióticos del ecosistema pueden influir en el promedio de GPT, al igual que el nivel de productividad de los animales. En SSPi, la carga de garrapatas puede ser inferior a la de sistemas de pastoreo en monocultivo.

Effects of abiotic and biotic factors on Vibrio harveyi ATCC 14126T survival dynamics in seawater microcosms

2019 ◽  
Vol 83 (2) ◽  
pp. 109-118 ◽  
Author(s):  
M Orruño ◽  
C Parada ◽  
E Ogayar ◽  
VR Kaberdin ◽  
I Arana
Keyword(s):  
Vibrio Harveyi ◽  
Biotic Factors ◽  
Abiotic And Biotic Factors

Nitrate Leaching to a Shallow Mid-Atlantic Coastal Plain Aquifer as Influenced by Conventional No-Till and Low-Input Sustainable Grain Production Systems

1993 ◽  
Vol 28 (3-5) ◽  
pp. 691-700 ◽  
Author(s):  
J. P. Craig ◽  
R. R. Weil
Keyword(s):  
Management Practices ◽  
Production Systems ◽  
Cropping Systems ◽  
Cropping System ◽  
Atlantic Coastal Plain ◽  
Grain Production ◽  
Nitrogen And Phosphorus ◽  
Mineral N ◽  
Low Input ◽  
No Till

In December, 1987, the states in the Chesapeake Bay region, along with the federal government, signed an agreement which called for a 40% reduction in nitrogen and phosphorus loadings to the Bay by the year 2000. To accomplish this goal, major reductions in nutrient loadings associated with agricultural management practices were deemed necessary. The objective of this study was to determine if reducing fertilizer inputs to the NT system would result in a reduction in nitrogen contamination of groundwater. In this study, groundwater, soil, and percolate samples were collected from two cropping systems. The first system was a conventional no-till (NT) grain production system with a two-year rotation of corn/winter wheat/double crop soybean. The second system, denoted low-input sustainable agriculture (LISA), produced the same crops using a winter legume and relay-cropped soybeans into standing wheat to reduce nitrogen and herbicide inputs. Nitrate-nitrogen concentrations in groundwater were significantly lower under the LISA system. Over 80% of the NT groundwater samples had NO3-N concentrations greater than 10 mgl-1, compared to only 4% for the LISA cropping system. Significantly lower soil mineral N to a depth of 180 cm was also observed. The NT soil had nearly twice as much mineral N present in the 90-180 cm portion than the LISA cropping system.

scholarly journals Effects of Dysbiosis and Dietary Manipulation on the Digestive Microbiota of a Detritivorous Arthropod

2021 ◽  
Vol 9 (1) ◽  
pp. 148
Author(s):  
Marius Bredon ◽  
Elisabeth Depuydt ◽  
Lucas Brisson ◽  
Laurent Moulin ◽  
Ciriac Charles ◽  
...  
Keyword(s):  
Crucial Role ◽  
Structure And Function ◽  
Ecological Interactions ◽  
Dietary Manipulation ◽  
Biotic Factors ◽  
Abiotic And Biotic Factors ◽  
And Function ◽  
Multicellular Organisms ◽  
Over Time

The crucial role of microbes in the evolution, development, health, and ecological interactions of multicellular organisms is now widely recognized in the holobiont concept. However, the structure and stability of microbiota are highly dependent on abiotic and biotic factors, especially in the gut, which can be colonized by transient bacteria depending on the host’s diet. We studied these impacts by manipulating the digestive microbiota of the detritivore Armadillidium vulgare and analyzing the consequences on its structure and function. Hosts were exposed to initial starvation and then were fed diets that varied the different components of lignocellulose. A total of 72 digestive microbiota were analyzed according to the type of the diet (standard or enriched in cellulose, lignin, or hemicellulose) and the period following dysbiosis. The results showed that microbiota from the hepatopancreas were very stable and resilient, while the most diverse and labile over time were found in the hindgut. Dysbiosis and selective diets may have affected the host fitness by altering the structure of the microbiota and its predicted functions. Overall, these modifications can therefore have effects not only on the holobiont, but also on the “eco-holobiont” conceptualization of macroorganisms.

Cotton row spacing for boll weevil management in low-input production systems

2021 ◽  
Vol 145 ◽  
pp. 105614
Author(s):  
Elcio Antonio Paim ◽  
Antônio Macedo Dias ◽  
Allan T. Showler ◽  
Karolayne Lopes Campos ◽  
Andréa Aparecida Santos Oliveira ◽  
...  
Keyword(s):  
Production Systems ◽  
Boll Weevil ◽  
Row Spacing ◽  
Low Input

Evaluation of a new technology when applied to sheep production systems: Part I—Model description

1989 ◽  
Vol 29 (1) ◽  
pp. 35-47 ◽  
Author(s):  
P.J. Bowman ◽  
D.A. Wysel ◽  
D.G. Fowler ◽  
D.H. White
Keyword(s):  
Production Systems ◽  
New Technology ◽  
Model Description ◽  
Sheep Production
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