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Organic additives in diet of dairy cows can reduce the conventional antiparasitics to control ticks.

L. Ferreira



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Organic additives in diet of dairy cows can reduce the conventional antiparasitics to control ticks.
L. Ferreira*1, A. Daurea1, L. Bertelli1, A. Nascimento2, M. Lima2, R. Mendon�a2. 1Premix Ribeir�o Preto, SP, Brazil, 2Universidade de Franca Franca, SP, Brazil.

The inclusion of fatty acids as additives organics in diet of the animals can to improve the immune response of animals, reduces an application of carapaticidal agents and makes the practice sustainable. This study was to evaluate the action of an organic additive as an aid in controlling the tick Rhipicephalus (Boophilus) microplus. 20 dairy cows was divided into 2 experimental groups. The cows were stratified based on the teleogen count present on the left side of each naturally tick-infested animal, using an average of 3 counts on consecutive days before treatment. The treated group received daily the organic additive Fator P and the control received the same mineral supplementation but without the additive. Fator P is an organic additive composed to: aminoacids (lysine, methionine, and tyrosine), the choline, minerals, probiotics and fatty acids. To evaluate the action of the additive, counts 3, 5, 7, 14, 21, 28, 57, 86, 115, 144, 172, 200, 227, 254 and 281 d after the beginning of treatment were performed. To avoid ticking overcrowding, animals that had counts greater than 30 teleogins were treated with conventional antiparasitics. The experimental showed efficacy was greater than 50% in 5 d out of 15 evaluated, with a statistically significant difference between experimental groups in 6 of these assessment days (Two Way ANOVA and posttest Bonferroni). The control group received conventional treatment 18 times more than the treated. There was a reduction of 64.28% in the number of treatment in animals supplemented with the organic additive, thus providing an auxiliary action in the control of ticks.Table. Means and standard deviation of tick count

Experimental dayControlTreated
36.0 (�3.9)5.1 (�5.5)
50.0 (�0.0)0.0 (�0.0)
70.0 (�0.0)0.0 (�0.0)
140.0 (�0.0)0.0 (�0.0)
212.4 (�1.9)1.9 (�1.0)
281.2 (�1.7)3.0 (�3.8)
578.8 (�6.3)9.8 (�5.9)
8611.4* (�7.2)26.7* (�23.7)
11524.2** (�11.5)7.6** (�2.1)
14427.0 (�17.9)16.5 (�10.7)
17225.5* (�15.0)10.7* (�9.9)
20024.3* (�18.9)9.0* (�9.7)
22734.8*** (�15.5)8.1*** (�9.6)
25422.8* (�14.2)7.9* (�11.1)
28116.6 (�14.9)9.1 (�12.3)
*P < 0.05, **P < 0.01, ***P < 0.001.

Keywords: animal nutrition, tick efficacy, alternative control.