A drop of your tick burden inside cattle is associated with higher temperature levels of stress within the a warm environment

Findings

There clearly was a serious association out of breed, sex, ages and you will real time pounds towards tick burden off Bos taurus Colombian cattle breeds. The specific environmental requirements of each and every agroecosystem could have influenced new variations observed in the latest shipments of clicks on the body of cows. A higher thermal problems is of this a high tick load inside cattle that perhaps provides less level of versatility, which matchmaking https://kissbrides.com/blog/dating-in-your-30s/ could well be myself impacted by a few of the traits having an influence on the fresh new thermal comfort of one’s animal. Yet not, it interaction between tick weight and you will ecological temperature stress could be impacted by features of one’s agroecological area itself, the fresh new reproduce, brand new hereditary opposition of the individual tick as well as the thermal versatility regarding cattle.

Colombian cattle breeds had been delivered to the newest Americas more than 500 in years past. This type of types keeps an optimal reproductive efficiency , higher beef top quality as well as have a particular resistance to disease such as because the brucellosis . The fresh shipping of these breeds try impacted by the very diverse agroecological criteria utilized in Colombia. Numerous studies have shown you to in addition to the weather and you may environment type of, other variables such as the reproduce, age and you may sex of one’s dogs likewise have a life threatening impact for the tick weight in numerous cattle communities [8, 15,16,17,18]. Into the Colombia, the newest readily available literary works towards the cattle ticks contact brand new physical and environment aspects of these types of parasitic organisms and its geographic shipping . not, not all the studies have shown the tick load on the cows left lower than sheer requirements, that didn’t make up effects eg reproduce, decades and sex of your pet or climate parameters . Thus, and also in look at the newest paucity of data to the items impacting tick infestations, the aim of so it check out would be to define brand new tick burdens within the Colombian cows types in order to evaluate the relationships between tick infestation accounts and heat versatility, using the AI additionally the THI, under warm conditions.

Climatic variables as well as heat fret indices

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 life threatening relationship anywhere between ages and you can tick load for the brand new Colombian types analyzed. Multiple research has receive a significant effectation of age cattle on tick load [8, 16, 17, 21]. Rehman mais aussi al. and you will Lorusso et al. discover a lower life expectancy tick burden in lower legs than the old cows, and you may Asmaa ainsi que al. observed a high infestation speed during the earlier dogs of different ruminant animals variety.

Environmental alter possess a confident or negative effect on the new physiological temperatures control mechanisms out of cows and you may probably into tick burden of these dogs . The higher tick burden used in SM and you will ROMO animals with a keen AI > 2 perform signify cattle having your state off lower adaptability, conveyed by the contact with a beneficial thermal problems, provides a higher susceptibility become plagued of the presses. The better thermal adaptation of a few pet (having an enthusiastic AI

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1 kwietnia 2024 godz. 22:34

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Autor: Zofia Hebda