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| Mendes,Luciano B.; Tinoco,Ilda F. F.; Ogink,Nico W. M.; Rocha,Keller S. O.; Osorio S.,Jairo A.; Santos,Marilú S.. |
| This study was conducted with the aim of monitoring NH3 emissions from a mechanically and a naturally ventilated broiler house (MVB and NVB, respectively) and calculate their ammonia emission factors (fNH3). Bird stocking density was 13.5 and 11.1 birds m-2 for the MVB and NVB, respectively. The marketing age was 43 days and bedding consisted of dried coffee husks in its first time of use. Ventilation rates were calculated with the metabolic carbon dioxide mass balance method. Values of fNH3 were 0.32 ± 0.10 and 0.27 ± 0.07 g bird-1 d-1 for the MVB and NVB, respectively, and are in agreement to what was presented in other studies performed under similar conditions. The fNH3 estimated on yearly basis was 58 g bird-place-1 year-1. It was concluded that the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Emission factor; Inventory; Ventilation rate; Tropical conditions. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662014001100013 |
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| Ponce,P. |
| The existent knowledge about the use of the Lactoperoxidase system (LPs) on the preservation of raw milk confirms its innocuity to human health, which allowed the lifting of the restriction for system to be used for milk products for international dairy market. Under tropic conditions, thiocyanate concentration needed for activating LPs can be reduced to about half of the established in the Codex Alimentarius guidelines, increasing its use security. When the antimicrobial effect of the LPs disappeared, exacerbation of the pathogen microorganisms was not observed, neither an inhibitory effect on the lactofermentant bacteria, in every case in wich milk was previously pasteurized to 850C during 20 minutes. This method maintains the initial quality of raw... |
| Tipo: Journal article |
Palavras-chave: Lactoperoxidase system; Raw milk; Tropical conditions. |
| Ano: 2010 |
URL: http://scielo.sld.cu/scielo.php?script=sci_arttext&pid=S0253-570X2010000300002 |
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