RESUMOUma das alternativas para a destinação de rejeito de dessalinizadores é a utilização em tanques de piscicultura e carcinocultura e posterior reúso na irrigação de culturas tolerantes a salinidade. O trabalho foi conduzido no município de Barra de Santa Rosa, PB, objetivando verificar a taxa de germinação da semente, brotação das mudas e características bromatológicas de maniçoba (Manihot glaziovii Muell Arg), erva-sal (Atriplex nummularia), flor de seda (Calotropis procera) e jureminha (Desmanthus virgatus), cultivadas e irrigadas com água excedentes de tanques de piscicultura e carcinocultura, oriundos de rejeito de dessalinizadores, com condutividade elétrica de 5.800 e 5.200 S cm -1 , respectivamente. A flor de seda e erva-sal apresentam maiores taxas de germinação (96,0%) e brotação (70,0%), respectivamente, seguidas da taxa de brotação da maniçoba (62,0%) e da jureminha (51,0%). Do total de mudas transplantadas 95,0; 93,0; 82,7 e 80,5% das plantas de flor de seda, maniçoba, atriplex e jureminha, foram viáveis, respectivamente. As forrageiras apresentaram boa taxa de brotação e germinação e propagação e boa composição bromotologica, onde a jureminha e o atriplex apresentaram teor de proteína, matéria orgânica e energia bruta de 9,4 e 17,8%; 95,0 e 76,3% e 4.295,8 e 3.575,9 cal g -1 de energia bruta, respectivamente.Palavras-chave: água residuária, alimentação animal, rejeito do dessalinizador Production and bromatological evaluation of forage species irrigated with saline water ABSTRACT One of the alternatives for the disposal of desalinization waste is its use in fishponds and shrimp production and later reuse for irrigation of crops tolerant to salinity. This work was conducted in Barra de Santa Rosa, PB, with the aim of verifying the rate of seed germination, sprouting and bromatologic characteristics of maniçoba (Manihot glaziovii Muell Arg), erva-sal (Atriplex nummularia), silk flower (Calotropis procera) and `jureminha` (Desmanthus virgatus), cultivated and irrigated with excess water of fishponds and shrimp production, coming from desalinization waste, with electrical conductivity of 5,800 and 5,200 S cm -1 , respectively. The silk flower and salt herb had higher rates of germination (96.0%) and spouting (70.0%), respectively, followed by the rate of sprouting of maniçoba (62.0%) and jureminha (51.0 %). Of the total transplanted, 95.0, 93.0, 82.7 and 80.5% of plants of silk flower, maniçoba, atriplex and mimosa were viable, respectively. Forages had good rate of germination and sprouting and spreading, and good bromatological composition, where as `jureminha` and atriplex presented protein content, organic matter and gross energy 9.4 and 17.8%; 95.0 and 76.3%; and 4,295.8 and 3,575.9 cal g -1 of gross energy, respectively.
The consumption of saline water in semiarid regions is a recurrent situation that can affect the ingestive behavior of small ruminants. This study evaluated the ingestive behavior of Santa Inês sheep maintained in a climatic chamber under two air temperatures-25 °C within the thermal comfort zone (TCZ) and 32 °C above the TCZ-and consuming water with three levels of salinity-2.0, 4.0, and 8.0 dS m-1. The experimental design was completely randomized in 2 × 3 factorial schemes, comprising two air temperatures and drinking water with three levels of salinity, in six replicates (animals). Regardless of air temperature, the consumption of saline water did not affect feed and water intake by the sheep; however, there was a decrease in feed intake and an increase in water intake as air temperature increased. Feed and water intake; feeding, rumination, and idle times; defecation frequency; and fecal production were not affected (P > 0.05) by the water salinity levels, whereas reduction in feed intake, feeding time, and rumination time and an increase in water intake and idle time were observed as air temperature increased. In summary, increasing air temperature negatively affected the ingestive behavior of the animals; however, water with salinity up to 8.0 dS m-1 did not affect their ingestive behavior and hence could be used for drinking.
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