No abstract

Among the animal data, we have biometric measures related to the development and production of goats. Thus, the objective of this study was to evaluate the correlation between live weight and thoracic perimeter in the caprine species, in order to obtain a barometric tape to estimate the live weight of the animal, without the use of the scale. Caprines from 10 to 42 kg live weight were used; males and females; pure Saanen race and Saanen-Boer crossbred. The thoracic perimeter of each animal was measured after weighing, in which it was measured at the external circumference of the thoracic cavity, just below the axillae, with steel cable to minimize possible errors from the elasticity of the tape measure, with the animal in the correct position of legs angulations. All parameters were recorded with the fasting animal for 12 h. Subsequently the live weight was estimated by regression equations with high correlation coefficients. The study showed a strong positive correlation between live weight (kg) of the animal and the thoracic perimeter (cm). The barometric tape for Saanen and Saanen x Boer crossbreed presented 97% efficacy for the estimation of the weight of Saanen and crossbreed. The thoracic perimeter provides a high efficiency in the estimation of the live weight of caprines and can be used as an alternative when scales are not available, being more appropriate the separation by race and sex before adjusting the equation to be calculated.

RESUMO:O capim tangola, possui grande importância para a produção de pastagem em locais temporariamente alagados com período de estiagem, é um híbrido adaptado à áreas alagadas e mais resistente a seca, possui características fisiológicas como aerênquimas, raízes adventícias, cloroplastos mais próximos a epiderme e epidermes mais finas, que proporcionam sua adaptação ao alagamento. Dessa forma, objetivou-se comparar a produtividade do capim tangola em um sistema irrigado, sob diferentes doses de adubação e frequência de corte no outono. Utilizou-se neste trabalho um Delineamento Inteiramente Casualizado com cinco tratamentos, que são os diferentes níveis de adubação e quatro repetições, sendo realizados cortes de 21 e 28 dias, em canteiros específicos, a uma altura de 20 cm simulando o pastejo. Os níveis de adubação obtiverem diferença significativa a 1% pelo teste de Tukey sem interação com a época de corte de acordo com o período de descanso. As adubações nitrogenada e potássica aumentaram a produtividade do capim. Independente da produção de biomassa, a relação folha:colmo, para todos os tratamentos foi estatisticamente igual, no entanto, houve diferença no dois períodos de descanso, porém a produção de matéria seca aumentou. As adubações nitrogenada e potássica, aumentaram a produtividade do capim tangola durante o outono e o período de descanso de 28 dias, apresentou maior altura do dossel, maior produtividade e menor relação folha:colmo e a melhor eficiência de utilização do nitrogênio ocorreu para o período de descanso de 28 dias associada a dose de 150 kg N ha PRODUCTIVITY OF TANGOLA GRASS (Brachiaria mutica x Brachiaria arrecta) IN AUTUMN UNDER DIFFERENT FERTILIZATION LEVELS AND REST SUMMARY:The Tangola grass has great importance for grassland production in areas temporarily flooded with dry season, it is a hybrid adapted to wetlands and more resistant to drought, has physiological characteristics as aerenchyma, adventitious roots, closer chloroplasts epidermis and epidermis thinner, which provide their adaptation to flooding. Thus, the objective was to compare the productivity of Tangola grass in an irrigated system under different doses of fertilization and cutting frequency in the fall. We used this work a completely randomized design with five treatments, which are the different levels of fertilization and four replications, being carried out 21 and 28 days of cuts in specific sites, at a height of 20 cm simulating grazing. Nutrient levels obtain significant difference to 1% by Tukey test without interaction with the cutting time according to the period of rest. The nitrogen and potassium fertilization increased grass productivity. Regardless of biomass, the leaf: stem ratio for all treatments was statistically similar, however, there were differences in two periods of rest, but the increased dry matter production. The fertilizer nitrogen and potassium, increased productivity Tangola grass during the fall and the rest period of 28 days had higher canopy height, higher productivity and lower leaf: s...