Ticks has a poor impact on milk products and you can beef cows design systems worldwide, for the concomitant exposure they show on the transmission of some essential contagious problems. Colombian cows types is distributed across some other agroecological nations as they are exposed to more environmental challenges. In humid and you can much warmer weather such as those regarding tropics, tick burden as well as heat be concerned are very important circumstances that may sacrifice livestock performance. The aim of this study would be to define tick load in the four Colombian cows breeds and you can assess the relationships anywhere between temperatures fret and you will tick weight during the Bos taurus cows below warm requirements. Tick counting is actually used in 1332 cows regarding Romosinuano (ROMO), Costeno scam Cuernos (CCC), San Martinero (SM) and you will Blanco Orejinegro (BON) types, found in the Caribbean, Orinoquia and Andean regions. Important signs and you can ecological variables have been brought to assess an versatility index (AI) and a fever humidity index (THI). An enthusiastic AI 75.
Performance
Show showed a differing distribution out of ticks on your body from people who varied depending on the agroecological region. A reduced tick burden try noticed in the brand new ROMO breed (several.8 ± dos.6), once the highest tick burden try found in CCC (31.8 ± 2.3), which have been located in the same agroecological area. SM and you may ROMO animals that have an AI > 2 had a top tick weight than just their competitors that had an enthusiastic AI
Records
Ticks was bloodsucking ectoparasites you to definitely real time because of the feeding on blood of different partner pets, animals and you will animals varieties. Ticks have become essential in warmer, wetter habitats in which they’re able to connect with farming development otherwise sufficiently managed . Rhipicephalus (Boophilus) microplus try an economically extremely important tick extensively marketed about southern hemisphere as well as in the southern area says of your United states, and you can acts as an excellent vector on indication away from babesiosis and you may anaplasmosis . Rhipicephalus microplus is the tick with the higher bad monetary feeling into meats and you can milk cattle markets regarding Central and you will Southern area America, and Australia [step three, 4]. In the Colombia, R kissbrides.com voit kokeilla tГ¤tГ¤. microplus might have been reported in several divisions along side Caribbean, the Andean plus the Orinoquia nations .
Monetary loss inside the plagued cattle are caused by skin lesions, medication costs, losings of this alert from tick-borne disorder, and also the direct bad influence on animal output [4, 6]. In the Bos taurus cows, each engorging feminine tick accounts for the average loss of 1.37 ± 0.twenty five g regarding weight each individual, whilst in B. taurus ? B. indicus crosses, this worthy of has been projected since step 1.18 ± 0.21 g/engorging tick. That it weight losses is not just considering the bloodstream losings caused by clicks, and also because of urges inhibition and you may smaller provide intake, that may make up everything 65% of the lbs despair. More over, changes away from metabolic variables and you can dysfunctional digestive from the interference with typical abomasal outflow used in experimentally plagued cows imply that the end result out-of blood loss into the efficiency simply shows you regarding the 25% of your full bodyweight losings .
Temperature is one of the most significant factors dealing with tick delivery due so you can the regulatory impact on the newest tick lifetime-period . Alterations in ecological conditions may have an optimistic or negative perception to your tick burdens as well as on the fresh new psychological temperatures controls components regarding plagued cows . Several indicator have been designed to keep track of the warmth worry updates in almost any livestock varieties. Heat-humidity directory (THI) combines the effects from air temperature and you may moisture from the amount of thermal fret . Other indices such Benezra’s coefficient out-of versatility (AI) and/or Iberia heat endurance attempt be the cause of vital signs inside the dogs eg rectal heat and respiratory price.