Composição química e valor energético de alimentos de origem animal utilizados na alimentação de codornas japonesas

Avaliaram-se a composição química e o valor energético de farinhas de resíduos de abatedouro para machos de codornas japonesas (Coturnix coturnix japonica). Foram utilizadas 320 codornas machos, com 32 dias de idade, distribuídas em delineamento experimental inteiramente ao acaso, com cinco dietas (uma referência e quatro dietas-teste), cada uma avaliada com oito repetições de oito aves por unidade experimental. As farinhas substituíram 25% da dieta-referência e seus valores de energia metabolizável, assim como os coeficientes de metabolizabilidade, foram determinados pelo método de coleta total de excretas. Os valores de energia metabolizável aparente (kcal/kg) e aparente corrigida para balanço de nitrogênio (kcal/kg) são, respectivamente, de 2.152 e 2.142 para a farinha de carne e ossos; de 3.139 e 3.137 para a farinha de penas; de 2.658 e 2.651 para a farinha de peixe; e de 3.692 e 3.668 para a farinha de vísceras de aves. Os coeficientes de metabolizabilidade são de 60,51% para farinha de carne e ossos; 59,25% para a farinha de penas; 64,09% para farinha de peixe; e 78,64% para a farinha de vísceras de aves.It was evaluated the chemical composition and energy values of slaughterhouse by-product meal for male Japanese quails (Coturnix coturnix japonica). It was used 320 male quails at 32 days of age, distributed in a complete random experimental design, with five diets (one reference diet and four test diets), each one evaluated with eight replicates with eight birds per experimental unity. Meals replaced 25% of the reference diet and their metabolizable energy values as well as their metabolizability coefficients were determined by using the total excreta method collection. Values of apparent metabolizable energy (kcal/kg) and apparent energy corrected for nitrogen balance (kcal/kg) are, respectively, 2,152 and 2,142 for meat and bone meal; 3,139 and 3,137 for feather meal; 2,658 and 2,651 for fish meal and 3,692 and 3,668 for poultry viscera meal. Metabolizability coefficients are 60.51% for meat and bone meal; 59.25% for feather meal; 64.09% for fish meal and 78.64% for poultry viscera meal

Valores de aminoácidos digestíveis de alimentos para aves

O experimento foi conduzido para determinar os coeficientes de digestibilidade verdadeira dos aminoácidos utilizando-se o método de alimentação forçada com galos adultos cecectomizados. Os alimentos estudados foram: quirera de arroz; farelo de arroz integral; milho; sorgo; farelo de trigo; farelo de soja; farelo de algodão 28% e farelo de algodão 38%; levedura 43%; levedura 40%. Os valores médios dos coeficientes de digestibilidade verdadeira dos aminoácidos essenciais e não-essenciais foram, respectivamente: 77,53 e 67,21% para a quirera de arroz; 73,33 e 52,54% para o farelo de arroz integral; 73,33 e 52,54% para o milho; 84,48 e 67,21% para o sorgo; 70,75 e 48,55% para o farelo de trigo; 89,37 e 85,22% para o farelo de soja; 74,85 e 74,13 para o farelo de algodão 28%; 77,50 e 72,46% para o farelo de algodão 38%; 49,16 e 48,63% para a levedura 43%; e 46,03 e 38,88% para a levedura 40%. Os valores obtidos dos coeficientes de digestibilidade verdadeira de aminoácidos essenciais e não-essenciais dos alimentos estudados permitem elaborar rações mais eficientes para aves.This experiment was carried out to determine the values of the real digestibility coefficients of amino acids by using the method of "forced feed" with cecectomized roosters. The studied food were the following: rice bran, whole rice meal, corn, sorghum, wheat bran, soybean meal, cotton meal 28%, cotton meal 38%, yeast sugar cane 43% and yeast sugar cane 40%. The mean values of real digestibility coefficients of essential and non-essential amino acids were, in percentage, the following: for rice bran, 77.53 and 67.21; for rice meal, 73.33 and 52.54; for corn, 84.65 and 74.42; for sorghum, 84.48 and 67.29; for wheat bran, 70.75 and 48.55; for soybean meal, 89.37 and 85.22; for cotton meal 28%, 74.85 and 74.13; for cotton meal 38%, 77.50 and 72.46; for yeast sugar cane 43%, 49.16 and 48.63; and yeast sugar cane 40%, 46.03 and 38.88. The values of the coefficients of real digestibility of essential and nonessential amino acids of feedstuffs studied allow to formulate more efficient rations for birds

Search for intermediate mass black hole binaries in the first and second observing runs of the Advanced LIGO and Virgo network

Gravitational-wave astronomy has been firmly established with the detection of gravitational waves from the merger of ten stellar-mass binary black holes and a neutron star binary. This paper reports on the all-sky search for gravitational waves from intermediate mass black hole binaries in the first and second observing runs of the Advanced LIGO and Virgo network. The search uses three independent algorithms: two based on matched filtering of the data with waveform templates of gravitational-wave signals from compact binaries, and a third, model-independent algorithm that employs no signal model for the incoming signal. No intermediate mass black hole binary event is detected in this search. Consequently, we place upper limits on the merger rate density for a family of intermediate mass black hole binaries. In particular, we choose sources with total masses M=m1+m2ϵ[120,800] M and mass ratios q=m2/m1ϵ[0.1,1.0]. For the first time, this calculation is done using numerical relativity waveforms (which include higher modes) as models of the real emitted signal. We place a most stringent upper limit of 0.20 Gpc-3 yr-1 (in comoving units at the 90% confidence level) for equal-mass binaries with individual masses m1,2=100 M and dimensionless spins χ1,2=0.8 aligned with the orbital angular momentum of the binary. This improves by a factor of ∼5 that reported after Advanced LIGO's first observing run. © 2019 American Physical Society