Findings
There was a significant organization of breed, sex, years and you will live lbs to the tick burden off Bos taurus Colombian cows types. The ecological requirements of each agroecosystem could have affected the fresh distinctions found in the brand new shipping off clicks on your body out-of cattle. A top thermal discomfort try on the increased tick burden when you look at the cattle one to possibly provides a lesser level of flexibility, and that dating would-be yourself influenced by some of the qualities that have an influence on the fresh new thermal spirits of your animal. But not, that it correspondence anywhere between tick burden and you will environmental temperatures koreli̇ çi̇nli̇ japon kadinlar karşilaştirildi worry will be influenced by properties of agroecological region itself, brand new breed, the fresh hereditary opposition of the person tick and the thermal adaptability regarding cows.
Colombian cattle breeds had been delivered to brand new Americas over 500 in years past. This type of types keeps an optimal reproductive show , higher animal meat quality and also have a certain resistance to problems instance because the brucellosis . The newest shipping of those breeds is actually influenced by the most diverse agroecological criteria used in Colombia. Numerous studies have shown you to together with the climate and habitat type of, other factors such as the breed, many years and you will sex of your pet have a life threatening impression to your tick weight in different cows communities [8, 15,16,17,18]. Inside the Colombia, the fresh new readily available literature for the cattle ticks contact the fresh new biological and you will environment areas of this type of parasites and its own geographical shipping . But not, not all research shows the latest tick load into the cows kept around sheer criteria, and they don’t account fully for outcomes such as for example breed, decades and you will sex of your pets or environment details . Ergo, and in view of the brand new paucity of information on the items impacting tick infestations, the aim of which check out was to define new tick burdens during the Colombian cows types and to assess the relationships between tick infestation membership as well as heat flexibility, using both AI in addition to THI, below exotic conditions.
Climatic parameters as well as heat be concerned indices
An overall effect of AI was observed within breeds (F(4,1528) = 3.25, P = 0.0115), with higher tick burdens observed when the AI was higher than 2, although this effect was significant only in the SM (t(1528) = -2.43, P = 0.0153) and ROMO (t(1528) = -2.62, P = 0.0088) breeds. Tick burden was significantly different between breeds for both AI categories (Table 4 and Fig. 5). When the AI values were lower or equal to 2, CCC individuals showed a higher tick burden than all other breeds (30.8 ± 2.6), and a higher tick burden than ROMO and BON when the AI was higher than 2. Likewise, ROMO had a lower tick burden than SM and CCC breeds in both scenarios (AI lower or higher than 2), while BON showed a lower tick burden compared with SM and CCC only when AI was higher than 2 (19.3 ± 2.2).
We found a significant correlation between ages and tick burden inside the brand new Colombian types evaluated. Multiple research has found a significant effect of the age of cattle on the tick load [8, 16, 17, 21]. Rehman ainsi que al. and you will Lorusso et al. discover a lowered tick weight in calves than the elderly cattle, and you can Asmaa mais aussi al. noticed a higher infestation speed in earlier animals of different ruminant animals types.
Ecological transform enjoys an optimistic or bad impact on new physiological temperature regulation components from cattle and you can potentially on tick load of those pet . The higher tick load utilized in SM and you can ROMO animals having a keen AI > dos create indicate that cattle that have your state away from lower flexibility, shown from the experience of an excellent thermal soreness, features a top sensitiveness is plagued by the ticks. The greater thermal adaptation of a few dogs (which have an AI