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1.
Arq. bras. med. vet. zootec. (Online) ; 72(2): 581-589, Mar./Apr. 2020. tab
Article in Portuguese | LILACS, VETINDEX | ID: biblio-1128483

ABSTRACT

Avaliaram-se as doses de nitrogênio 0, 60, 120 e 240kg ha-1 sobre a composição bromatológica e os parâmetros da cinética de degradação ruminal da aveia branca obtida de dois anos de cultivo (2013-2014). Foram realizadas as análises de matéria seca, matéria mineral (MM), proteína bruta (PB), extrato etéreo, fibra em detergente neutro (aFDNmo), lignina, carboidratos solúveis (CHOs) e proteína insolúvel em detergente ácido (PIDA). Não foi observado efeito da adubação nitrogenada sobre as variáveis em nenhum dos anos de cultivo. As variáveis bromatológicas foram influenciadas pelos fatores ambientais. A cinética de degradação ruminal foi correspondente à composição bromatológica. No ano de 2013, foram observados valores superiores para as variáveis PB, MM, PIDA, CHOs e carboidratos não fibrosos, o que influenciou positivamente nos parâmetros da cinética de produção de gás in vitro, Vf 1 e k 2. A composição da cultivar em 2014 tendeu a maiores teores de aFDNmo, lignina e carboidratos totais e a valores superiores para os parâmetros Vf 2 e L. O parâmetro k 1 não foi significativo nos períodos avaliados. Em 2014 o valor nutritivo foi negativamente influenciado pelo atraso na semeadura e pela soma de períodos de restrição hídrica combinados com a elevação da temperatura.(AU)


Doses of Nitrogen were evaluated: 0, 60, 120 and 240kg ha-1 on the chemical composition and rumen degradation kinetics of white oats obtained from two consecutive years (2013-2014). For nutritional characterization the following parameters were analyzed: dry matter; ash, crude protein, ethereal extract, neutral detergent fiber, lignin, soluble carbohydrates and insoluble acid detergent protein. No effect of nitrogen fertilization was observed on the variables analyzed in any of the growing years. The nutritional variables were influenced by environmental factors that occurred in the respective experimental periods and the parameters of ruminal degradation kinetics corresponded to the effects in these compounds. In year 2013, higher values were observed for the variables crude protein, ash, insoluble acid detergent protein, soluble CHO and no fibrous carbohydrates, resulting in higher values also for the in vitro gas production kinetics, Vf1 and k2. Nutritional contents in 2014 tended to higher levels of NDF, lignin and total carbohydrates, and higher values for the parameters Vf2 and L. The parameter k1 was not significant in any of the experimental periods evaluated. In 2014 the forage has its nutritive value negatively influenced by the delay in sowing and the periods of water restriction combined with higher temperatures.(AU)


Subject(s)
Rumen/metabolism , Dietary Carbohydrates/metabolism , Avena/chemistry , Nitrogen , In Vitro Techniques , Kinetics
2.
In. IFMBE. Anais do III Congresso Brasileiro de Engenharia Biom‚dica. João Pessoa, IFMBE, 2004. p.141-143, ilus.
Monography in Portuguese | LILACS | ID: lil-557808

ABSTRACT

The study of the effects of the immobilization on the muscular tissue is a very important issue and the measurement of the biomechanics properties provides relevant knowledgement about adaptations occurred from functional demands...


Subject(s)
Biomechanical Phenomena , Immobilization , Muscle Rigidity , Muscle, Skeletal , Rats, Wistar , Musculoskeletal System
3.
In. IFMBE. Anais do III Congresso Brasileiro de Engenharia Biom‚dica. João Pessoa, IFMBE, 2004. p.137-140, ilus, graf.
Monography in Portuguese | LILACS | ID: lil-557809

ABSTRACT

The purpose of this study was to investigate the influence of physical training and sedentarism on the mechanical properties of striated muscle...


Subject(s)
Biomechanical Phenomena , Motor Activity , Muscle, Skeletal , Rats, Wistar , Swimming , Musculoskeletal System
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