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Previous issue date: 2015-02-12 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior - CAPES / Objetivou-se com esta pesquisa avaliar a influ?ncia do fornecimento de cinco
tipos de cact?ceas nativas e ex?ticas do semi?rido do Nordeste brasileiro, sobre as
caracter?sticas f?sico-qu?micas, sensoriais e o perfil de ?cidos graxos do leite de cabras
da ra?a Saanen. Foram utilizadas cinco cabras mult?paras com nove semanas de
lacta??o, peso vivo m?dio inicial de 50 kg ? 4 kg, confinadas e distribu?das em um
delineamento quadrado latino 5 x 5, com cinco dietas experimentais e cinco per?odos.
Cada per?odo teve dura??o de 17 dias, sendo 10 dias de adapta??o dos animais ?s dietas
e sete dias para coleta de dados. Os tratamentos, definidos com base na mat?ria seca,
consistiam em: 47,33 a 50,12% de uma cact?cea (xiquexique, mandacaru, facheiro,
palma mi?da ou palma orelha de elefante mexicana) mais 18,78 a 19,79% de feno de
sabi? e 31,10 a 32,89% de concentrado. N?o foi observado efeito das dietas
experimentais na composi??o f?sico-qu?mica do leite para os teores de gordura, s?lidos
totais e sais, que apresentaram valores m?dios de 3,24%; 11,30% e 0,66%,
respectivamente. No entanto, os teores de prote?na, lactose, extrato seco desengordurado
e ponto de crioscopia foram influenciados pelas dietas. No perfil dos ?cidos graxos
houve maior concentra??o de ?cidos graxos de cadeias curta e m?dia, contudo, n?o
houve altera??es entre os tratamentos, exceto para o ?cido but?rico (C4:0), cujos valores
m?dios foram de 4,24% (palma orelha de elefante) a 6,05% (facheiro). As dietas
tamb?m n?o conferiram mudan?as sensoriais no leite para os par?metros: odor, flavor,
sabor residual e aprecia??o global. A utiliza??o das cinco cact?ceas na alimenta??o de
cabras leiteiras n?o influencia as caracter?sticas sensoriais e o perfil lip?dico do leite. A
composi??o f?sico-qu?mica do leite se apresenta dentro das exig?ncias m?nimas da
legisla??o vigente, exceto para os teores de extrato seco desengordurado e ponto de
crioscopia. / The objective of this research was to evaluate the influence of the supply of
five types of native and exotic cacti Brazilian semiarid northeast on the sensory
characteristics of milk of Saanen goats. Five multiparous goats were used with nine
weeks of lactation, average live weight of 50 kg ? 4 kg., confined and distributed in a
Latin square design 5 x 5 with five experimental diets and five periods. Each period
lasted 17 days, with 10 days of adaptation to the diets of the animals and seven days for
the data collection. The treatments were defined based on dry matter consisted of: 47.33
to 50.12% of a cactus (?Xiquexique?, ?Mandacaru?, ?Facheiro? or two species of forage
cactus ?Mi?da? or ?Orelha de Elefante Mexicana?) more 18.78 to 19.79% hay of plant
?Sabi?? and 31.10 to 32.89% of concentrate. There was not effect of the experimental
diets in the physical and chemical composition of milk for fat, total solids and salts,
which showed mean values of 3.24%; 11.30% and 0.66%, respectively. However the
protein, lactose, nonfat dry extract and freezing point were affected by diets. In the
profile of fatty acids was higher concentration of fatty short and medium chain fatty
acids, however, there were not changes between treatments, except for the butyric acid
(C4:0), with mean values of 4.24% (?Orelha de Elefante Mexicana?) to 6.05%
(?Facheiro?). The diets also did not provide sensory changes in milk for the parameters:
odor, flavor, aftertaste and overall assessment. The use of the five cactus in the diet of
dairy goats do not influence the sensory characteristics and lipid profile of milk. The
physical and chemical composition of milk was showed within the minimum
requirements of current legislation, except for nonfat dry extract and freezing point.
| Identifer | oai:union.ndltd.org:IBICT/oai:repositorio.ufrn.br:123456789/19873 |
| Date | 12 February 2015 |
| Creators | Catunda, Karen Luanna Marinho |
| Contributors | 10633049468, http://lattes.cnpq.br/3844922335813780, Silva, Jean Berg Alves da, 02556429461, http://lattes.cnpq.br/1849041497210600, Moreira, Jos? Aparecido, 02697719806, http://lattes.cnpq.br/4985246420488435, Aguiar, Emerson Moreira de |
| Publisher | Universidade Federal do Rio Grande do Norte, MESTRADO EM PRODU??O ANIMAL, UFRN, Brasil |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/masterThesis |
| Source | reponame:Repositório Institucional da UFRN, instname:Universidade Federal do Rio Grande do Norte, instacron:UFRN |
| Rights | info:eu-repo/semantics/openAccess |
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