Presses enjoys a negative influence on milk products and you may chicken cattle design options international, on concomitant risk they portray on the indication of some essential infectious illness. Colombian cows types was delivered around the other agroecological regions and they are met with various other ecological pressures. Inside humid and you will more comfortable climates such as those on tropics, tick burden as well as heat stress are very important products that compromise livestock performance. The aim of this study would be to define tick load inside four Colombian cattle breeds and evaluate the relationship anywhere between temperatures stress and you may tick burden into the Bos taurus cattle less than warm standards. Tick depending are used inside the 1332 cows out of Romosinuano (ROMO), Costeno swindle Cuernos (CCC), San Martinero (SM) and you will Blanco Orejinegro (BON) types, found in the Caribbean, Orinoquia and you may Andean places. Essential cues and you may environment parameters was indeed delivered to determine a keen adaptability index (AI) and you can a fever humidity index (THI). A keen AI 75.
Efficiency
Efficiency presented a different shipping out of presses on the body from folks that ranged according to agroecological area. A low tick load is noticed in the fresh new ROMO breed (twelve.8 ± 2.6), as the large tick weight try present in CCC (29.8 ± dos.3), that have been located in the exact same agroecological area. SM and ROMO pet that have an enthusiastic AI > 2 had a higher tick burden than simply their counterparts that had an AI
Records
Presses was bloodsucking ectoparasites you to live from the serving on the Belizian naiset dating bloodstream of different partner animals, creatures and animals types. Ticks are particularly important in much warmer, wetter habitats where they may be able apply at farming production if not sufficiently regulated . Rhipicephalus (Boophilus) microplus try a financially extremely important tick generally distributed in the southern area hemisphere along with this new southern says of your own United states, and you may acts as good vector to the alert out of babesiosis and you may anaplasmosis . Rhipicephalus microplus ‘s the tick for the high bad financial effect into the chicken and milk cows industries out-of Main and Southern America, and you can Australia [3, 4]. Within the Colombia, R. microplus has been reported in a lot of departments over the Caribbean, this new Andean therefore the Orinoquia countries .
Monetary losings within the plagued cattle are due to skin lesions, treatment will set you back, losings on the alert regarding tick-borne ailment, in addition to lead negative effect on animal yields [4, 6]. From inside the Bos taurus cattle, for each and every engorging feminine tick is responsible for the typical death of step one.37 ± 0.25 grams regarding weight per personal, whilst in B. taurus ? B. indicus crosses, which worth could have been estimated since 1.18 ± 0.21 g/engorging tick. This lbs losses is not only because of the blood losings considering ticks, in addition to because of urges inhibition and you can faster offer consumption, that may account fully for around 65% of one’s lbs anxiety. Additionally, changes of metabolic details and you will impaired digestive because of the interference that have regular abomasal outflow found in experimentally infested cows imply that the result out of blood loss on output just teaches you in the twenty five% of total weight losings .
Temperature is one of the several factors managing tick shipments due in order to their regulating impact on the newest tick life-stage . Changes in environment criteria could have a positive or bad impression toward tick burdens as well as on the fresh mental temperatures controls systems out of infested cows . Several indices have been designed to keep track of the heat stress reputation in almost any animals types. The temperature-moisture directory (THI) integrates the consequences out of heavens temperatures and dampness regarding the quantity of thermal worry . Other indicator such as for instance Benezra’s coefficient out of versatility (AI) or even the Iberia heat tolerance test be the cause of important signs in the animals such as for instance rectal heat and you will breathing price.