(ten,1528) = 5.11, P Table 5 Overall tick burden and tick burden by categories of the temperature-humidity index (means ± standard errors) in four Colombian cattle breeds
Talk
There can be a light amount of analysis on literature for the tick load from inside the cattle to have tropical regions throughout the Americas. Really studies with this thing was in fact done in subtropical countries particularly Southern area Africa [8, 15], regions that have high high temperatures eg Egypt and you may Pakistan , and some exotic countries for example Tanzania and you will Nigeria . Tick weight is commonly reported playing with transformed investigation, that renders effects comparison to have actual tick weight tough to translate. This research reveals the true tick load and its own reference to temperature stress indices in four Bos taurus breeds located in about three additional geographical aspects of Colombia (new Caribbean, Andean and you may Orinoquia countries). Tick burden during these Colombian cattle breeds was below one included in an experiment using steers grazing regarding the Meta service (Orinoquia region). Concurrently, the average tick weight based in the five Colombian types from inside the the try out (17.cuatro ± 24.6) is lower than one noticed in other exotic regions including the B. indicus Meru crossbred in the Tanzania (37.5 ± eleven.8) and some B. indicus cattle populations (White Fulani and you can Bunaji types as well as their crossbreds) inside the Nigeria (22 ± step one.4) . The different cows types, lawn varieties, grazing administration, herding system, weather and you can ecological areas of clicks might give an explanation for higher tick load used in such other education.
Tick distribution into cows regulators
The fresh tick load towards the rump and you will tail out-of SM (seven.dos ± 12.2), ROMO (5.8 ± 10.2) and you can CCC (nine.4 ± 15.1) cows is actually more than brand new tick weight found on the bottom base, belly and you will flanks (1.0 ± dos.4, 4.six ± 6.9 and you will eight.dos ± 11.1, respectively). These abilities accept those people received by the when you look at the Nguni cows. These types of article authors found that new tick weight on the end and you may perineum was greater than the fresh tick weight into the tummy on seasons. A minimal tick load inside the BON, ROMO and CCC cattle try seen into head and you will neck followed closely by the rear and you may loin. Similarly, Asmaa mais aussi al. learned that a decreased quantity of presses was indeed observed within the vision, neck and you may tits. Presses favor invisible and you will enjoying anatomical zones to your animal looks . And therefore, the ideal environment getting tick endurance try underneath the tail and you will perineum, perhaps discussing the fresh lot out-of clicks observed within these muscles zones. On the other hand, the back foot, udder, stomach, fore and buttocks flank much more exposed to lawn, hence with ease hit because of the presses. This is exactly precisely why we noticed a top proportion of the overall tick weight during these body areas.
Different kinds of grass and paddocks where this type of pets provide you may cause differences in tick load of the anatomical areas. This might be corroborated by comparable portion of tick load by the anatomical areas seen towards the ROMO and you can CCC breeds, that have been found at a similar fresh channel and you will was fed with the same version of turf. Conversely, the brand new tick load of the anatomical region is very some other inside BON and you may SM types, and that’s in part told me of the a different sort of ecosystem.
Sex, many years and live lbs
The better tick weight noticed in females will abide by the results off Rehman et al. from inside the Pakistani cattle, in which females had a significantly large tick weight than just males. Additionally, you will find a high frequency off tick infestation in females (58.7%) compared to men (41.5%) in the Egyptian cattle . On the other hand, zero high differences was in fact found to your infestation prevalence away from Roentgen. microplus anywhere between people during the Indian cows and you will North american country cattle . In the fresh stations where the cattle for the research had been kept, bulls acquired preferential management because they had asleep episodes through to the start of 2nd reproduction season, and you may was basically assigned into the paddocks with a reduced stocking speed. In contrast, cows was in fact always remaining at large stocking pricing. Why these conditions acquired by the bulls during the certain months of your own year you’ll define why we found a diminished tick burden for the men compared to lady inside our investigation.