Production responses, behavioral and physiological of cattle raised in biodynamic system in a diferent environments pre milking.

O objetivo desse trabalho foi avaliar a influência do ambiente de pastejo sobre o comportamento e de dois ambientes de pré ordenha sobre as respostas produtivas, fisiológicas, hormonais e a qualidade do leite de vacas da raça Pardo-Suíça criadas em sistema Biodinâmico de produção. A pesquisa foi dividida em quatro capítulos. No capítulo I, por meio da literatura vigente, buscou-se informações sobre a importância da utilização do sombreamento natural e artificial na pastagem, e ainda, a eficiência da sombra e dos sistemas de resfriamento na pré ordenha de vacas leiteiras, verificando-se, serem estratégias importantes para o conforto e a produção látea desses animais. No capítulo II, foi realizada uma revisão bibliográfica sobre as características produtivas e a qualidade do leite bovino produzido ecológica e convencionalmente, observando-se que a leve inferioridade na produção e nos constituintes do leite ecológico foi devido a baixa utilização de tecnologias no manejo geral desse sistema. No capítulo III, Avaliou-se a influência do ambiente de pastejo sobre o comportamento alimentar, ruminação e ócio, noturna e diuturnamente (Ensaio I) de 32 vacas, divididas nos níveis de alta e baixa produção láctea, e o efeito dos ambientes de pré ordenha de sombra e sol (ensaio II) sobre as variáveis fisiológicas desses animais. As vacas de baixa produção alimentaram-se por mais tempo nas horas quentes do dia, quando comparados aos de alta, mas os animais de ambos os níveis produtivos pastejaram mais durante o dia que à noite (Ensaio I). Nos ambientes de pré ordenha (Ensaio II), as vacas mais produtivas foram mais sensíveis ao calor que as de baixa produção e, o ambiente de pré ordenha sombreado foi eficiente em manter as variáveis fisiológicas dentro da faixa aceitável para os bovinos leiteiros, independentemente dos níveis produtivos. No capítulo IV, avaliou-se o efeito dos ambientes de sombra e sol sobre a produção, qualidade do leite e concentração plasmática hormonal de 32 vacas, divididas nos níveis de alta e baixa produção láctea. Assim, verificouse, que o fornecimento de sombra por 1,5 horas antes da ordenha da tarde a vacas leiteiras Pardo-Suíças criadas em sistema Biodinâmico de produção, embora reduza as intempéries climáticas sobre as mesmas, não altera a sua produção e composição láctea.The objective this work were to assess on grazing in two different environments of pre milking about the behavior in milk from cows of Brown Swiss on the productive responses, physiological, hormonal and quality from the biodynamic production system. That study was put in four chapters. Into the first chapter, we looked for information about the importance in to use the natural and artificial shading in grasslands and about the shadow efficiency and about the cooling systems on the milking in the milkmaid to confirm about the importance strategy for the comfort and the milk production. On the chapter II, we did the review in the papers about the production characterize and the milk qualify from the cattle form the ecological and traditional system to observe about the low in the production and the composition in the ecological milk was because the short technology in the handling in the used system. Into the chapter III we look for to evaluate the influence about the ambience on grazing about the food behavior rumination and resting, day and night (test I) of 32 cows, we had 16 in low and 16 in up production and look for about action of ambiences in pre milking on the sun and in with out sun. The cows from low production eating for up time in hot hours in the day when we make to comparison with the up production cows but the animal with the both level grazing more in the day (test I). In the ambiences in pre milking (Test II), the cows with the high production were more sensitive about the hot weather than the animal in the cooling weather and the ambience of pre milking with out sun were more efficiency with the physiological variations in the acceptance level for the cattle apart the two production levels. Into the chapter IV, we evaluated the effect of sun and shade environments on production, milk quality and hormonal plasma concentration of 32 cows, divided into high and low levels of milk production. In fact, it was found, that shade for 1.5 hours before the pre milking afternoon the cows in Brown Swiss from biodynamic production system, while reducing the influence weather in the cows, does not improve its yield and the composition milk

Environment influence in first milking upon production, composition, somatic cell count and hormones on cows in system created biodynamic

ABSTRACT. Rodrigues A.L., de Souza B.B., Pereira Filho J.M., de Mendonça M.F.F., Marques B.A.A., Silva L. de B., Viturino P.V. & Campos E.M. [Environment influence in first milking upon production, composition, somatic cell count and hormones on cows in system created biodynamic.] Influência do ambiente de pré-ordenha sobre produção, composição, contagem de células somáticas do leite e hormônios de vacas criadas em sistema biodinâmico. Revista Brasileira de Medicina Veterinária, 36(2):174-182, 2014. Programa de Pós- -Graduação em Medicina Veterinária, Centro de Saúde e Tecnologia Rural, Universidade Federal de Campina Grande, Caixa postal 64, Patos, PB 58708- 110, Brasil. E-mail: [email protected] The objective of the present study were apprise in two environments in first milking upon production, composition, SCC of milk and the concentration hormonal plasmatic in cows Brown Swiss cattle in two-production level and system created biodynamic. We used 32 cows; we had 16 in low and 16 in up production. The cow waits 1.5 hour for the first milking on the sun and in without sun. All the cows had the loggers to register the environment variations. The design experimental was completely randomized with 2 x 2 arrangement factorial (two environments first milking and two levels of production), consisted of 4 groups of 8 repetitions each. The acidity (P≤0.01) and the total solids (P>0.05) were less in the milk from the cows put in without sun. The cows about the production less level showed acidity (P≤0.01), density (P>0.05), lactose (P≤0.01) and solids without lipids (P≤0.01) in the milk in cows form milk had low production therefore we did not observation some difference in total solids (P>0.05) between two level production. The SCC milk did not showed variations between the environments and the production level (P>0.05), therefore in the number, were up in the cows with of sun and when had low production. The values form T3, T4 and cortisol, not had variations in the four groups in the study (P>0.05) and was in accord with the literature. When we put the cows Brown Swiss cattle for 1,5 hours in the first milking in system created biodynamic of production showed low influence weather in the cows did not showed good up production and good milk composition