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Diet crude protein content and sources for lactating dairy cattle Scientia Agricola
Imaizumi,Hugo; Santos,Flávio Augusto Portela; Bittar,Carla Maris Machado; Correia,Paulo Sérgio; Martinez,Júnio César.
Feeding extra protein as an attempt to increase amino acid flux to the intestine may increase lactational performance of dairy cattle. The objective of this study was to compare lactating dairy cow diets containing 16% crude protein (CP), adequate in rumen degradable protein (RDP) and metabolizable protein (MP) according to NRC (2001), with diets containing 17.5% CP. Forty-two Holstein cows (27 primiparous and 15 multiparous, with 172 days in milk) were used in a 3 ´ 3 Latin Square design with 14 replicates. Control diet consisted of 16% CP, adequate in RDP and MP . Crude protein content of diets was increased to 17.5% by feeding extra soybean meal and cottonseed meal (SBCS17.5) to increase diet MP, or extra urea (U-17.5) to increase diet RDP. The...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cottonseed meal; Metabolizable protein; Protein sources; Rumen degradable protein; Soybean meal.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162010000100003
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Effect of an herbivorous diet on energy balance of Litopenaeus vannamei at selected ontogenetic stages ArchiMer
Maldonado, Carlos; Cuzon, Gerard; Guzman, Emilio; Brito, Roberto; Soto, Luis; Arena, Leticia; Gaxiola, Gabriela.
Herbivorous (20% vegetable protein, 40% carbohydrate) and carnivorous diets (40% marine animal protein, 20% carbohydrate) were experimentally tested to assess their effect on the energy balance and energetic substrates utilized by postlarvae (PL's /15 days) and juvenile shrimp (3-6 g) of Litopenaeus vannamei. Postlarval stage 60 (PL60, early juveniles) shrimps fed HeD and CaD diets, then late juveniles (3-6 g) acclimated to the same diets were tested for their respective energy partitioning potential. No significant differences (p>0.05) on growth were obtained in early juveniles (mean final wet weight of 0.19 g). However in late juvenile stages a significant difference (p<0.05) in growth rate was observed. In terms of energy partitioning, both early...
Tipo: Text Palavras-chave: Energy; Juveniles; Metabolism; Protein sources; Shrimp.
Ano: 2009 URL: http://archimer.ifremer.fr/doc/2009/publication-7402.pdf
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Formulated diets for giant Chilean frog Calyptocephalella gayi tadpoles Ciencia e Investigación Agraria
Toledo,Pedro H; Suazo,Ricardo; Viana,Maria T.
In this study, we conducted an experiment to evaluate the overall effect of novel diets on the growth, metamorphosis and survival of tadpoles of the endangered giant Chilean frog Calyptocephalella gayi (previously known as Caudiverbera caudiverbera) to evaluate the potential of this species for culture and repopulation purposes. Using fishmeal as the main protein source with a substitution of either scallop viscera or Spirulina meal, three treatments were formulated to contain similar amounts of protein and energy. The experiment was run for 75 days, after which the tadpoles showed no significant differences among treatments in terms of their growth or survival. This is the first study to report positive effects of different diets on the growth and...
Tipo: Journal article Palavras-chave: Artificial diet; Nutrition; Protein sources; Spirulina meal; Survival.
Ano: 2014 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202014000100002
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Growth and feed utilization of the shrimp Farfantepenaeus paulensis fed diets containing different marine protein sources Ciência Rural
Cavalli,Ronaldo Olivera; Zimmermann,Sérgio; Speck,Roger Crippa.
Five isonitrogenous and isoenergetic diets containing different protein sources (fish, squid and mussel meals and their combinations at the proportions of 40, 30 and 30% or 60, 20 and 20%) were fed for 28 days to Farfantepenaeus paulensis. Growth performance and feed utilization of shrimp fed the fish meal-based diet was comparatively inferior to those fed other protein sources or their combinations. This indicates that fish meal may not be the best protein source for F. paulensis. Feeds containing a mixture of protein sources are better utilized by F. paulensis and therefore result in significantly higher growth than those containing a single protein source.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Shrimp; Farfantepenaeus paulensis; Growth; Feed utilization; Protein sources.
Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782004000300036
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In vivo and in vitro protein digestibility of formulated feeds for Artemesia longinaris (Crustacea, Penaeidae) BABT
Fernández Gimenez,Analía Verónica; Díaz,Ana Cristina; Velurtas,Susana María; Fenucci,Jorge Lino.
This study was undertaken to determine the in vivo crude protein apparent digestibility in the prawn Artemesia longinaris, using feeds with 0.25% of chromic oxide and animal (fish meal, meat and bone meal and squid protein concentrate) and plant (soybean meal) ingredients. Three replicate groups of prawn were fed and the feces were collected. The rate of protein hydrolysis was measured in vitro using midgut gland enzyme extract from the prawns fed the respective feeds and was compared with those found with enzyme extract of wild prawn. The in vivo apparent digestibility coefficients showed significant differences among the feeds (P<0.05). Fish meal feed presented the highest digestibility (92%); intermediate digestibility (83%) was found for meat and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Prawn; Nutrition; Protein sources; Enzyme assays.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000600009
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Replacement of fishmeal for soy protein concentrate in diets for juvenile Litopenaeus vannamei in biofloc-based rearing system R. Bras. Zootec.
Jatobá,Adolfo; Vieira,Felipe do Nascimento; Silva,Bruno Corrêa da; Soares,Mariana; Mouriño,José Luiz Pedreira; Seiffert,Walter Quadros.
ABSTRACT This study aimed to assess the final body weight, weekly weight gain, yield, apparent feed efficiency, protein efficiency ratio, and feed intake of the Pacific white shrimp (Litopenaeus vannamei) fed four diets containing different levels of soy protein concentrate (SPC) as a replacement for fishmeal, reared in a super-intensive biofloc system. Diets consisted of replacing 209 g kg-1 fishmeal at 0, 33, 66, and 100% SPC. Shrimp were raised in a biofloc system using twelve experimental units stocked with 250 shrimp m-3 under constant aeration (O2>5mg L-1) and temperature (29±0.5 °C). No significant differences among treatments were observed based on water quality parameters. Shrimp fed diets with 0 and 33% substitution exhibited the highest...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Aquaculture; Intensive system; Nutrition; Protein sources.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982017000900705
Registros recuperados: 6
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