Conclusions

There clearly was a life threatening connection out-of breed, sex, ages and real time lbs into the tick weight out of Bos taurus Colombian cattle breeds. The particular environment criteria of every agroecosystem have influenced the fresh new differences seen in the brand new delivery out-of ticks on the body from cattle. A higher thermal aches is actually with the a high tick weight from inside the cows one to possibly has a lower level of versatility, and therefore relationship will be actually influenced by a few of the qualities with an influence on new thermal morale of animal. Yet not, this interaction anywhere between tick weight and you may environmental heat worry might be influenced by features of the agroecological part itself, this new breed, the new genetic resistance of the person tick and thermal versatility off cows.

Colombian cattle types were taken to new Americas more than 500 years back. These breeds have an optimum reproductive performance , higher beef high quality and possess a specific effectiveness sickness such because brucellosis . New shipment ones breeds was affected by brand new very diverse agroecological criteria used in Colombia. Numerous research shows that aside from sevimli Belize kД±z the weather and you can habitat type, additional factors for instance the breed, many years and you may sex of your own animals have a serious feeling into the tick weight in different cattle communities [8, 15,16,17,18]. Into the Colombia, this new readily available literary works into cows ticks details brand new physiological and you can environment aspects of these types of parasitic organisms as well as geographic shipment . Yet not, only a few research shows the tick burden on the cattle kept around sheer criteria, and these didn’t be the cause of effects including breed, decades and you may sex of the pet otherwise weather details . For this reason, as well as in look at the fresh paucity of data on products affecting tick infestations, the goal of this try out would be to define the tick burdens inside the Colombian cattle types in order to measure the relationships anywhere between tick infestation levels and heat flexibility, using both AI while the THI, under warm standards.

Climatic details as well as heat fret indicator

An overall effect of AI was observed within breeds (F_{(cuatro,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).

I discovered a critical relationship ranging from many years and you will tick load inside the the fresh new Colombian types analyzed. Multiple research has found a critical effectation of the age of cows with the tick weight [8, 16, 17, 21]. Rehman ainsi que al. and you may Lorusso ainsi que al. discover a lesser tick weight during the lower legs than the old cows, and Asmaa et al. observed a high infestation rate during the old pet various ruminant animals species.

Ecological changes features a positive otherwise negative affect new mental heat control elements regarding cows and you may possibly for the tick burden ones pets . The greater tick burden used in SM and you will ROMO pets that have an enthusiastic AI > 2 carry out indicate that cattle having your state regarding straight down adaptability, shown because of the connection with a thermal pain, have a high sensitiveness become infested by the clicks. The greater thermal type of a few pets (which have an enthusiastic AI