Submitted by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-12-22T11:36:06Z No. of bitstreams: 2 vinicius_raimundi_andrade.pdf: 647063 bytes, checksum: afbb43c95c40604539a6b3e6be2dc6b6 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-12-22T12:49:52Z (GMT) No. of bitstreams: 2 vinicius_raimundi_andrade.pdf: 647063 bytes, checksum: afbb43c95c40604539a6b3e6be2dc6b6 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) / Made available in DSpace on 2015-12-22T12:49:52Z (GMT). No. of bitstreams: 2 vinicius_raimundi_andrade.pdf: 647063 bytes, checksum: afbb43c95c40604539a6b3e6be2dc6b6 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Previous issue date: 2011 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES) / Objetivou-se avaliar o consumo e a digestibilidade dos nutrientes, bem como a produ??o e composi??o do leite de vacas mesti?as (Holand?s x Gir) mantidas a pasto e suplementadas com cana e concentrado (28% de PB). Foram utilizadas cinco vacas com 150 ? 14 dias de lacta??o e produ??o m?dia de 7,1 ? 2,1 kg/dia de leite, distribu?das no delineamento em quadrado latino 5 x 5. Os tratamentos foram constitu?dos por dietas contendo soja que passou por diferentes processamentos e soja gr?o in natura sendo que, todos os animais receberam de forma casualizada, um dos seguintes tratamentos: concentrado a base de farelo de soja (FS); concentrado a base de gr?o de soja (SGC); concentrado a base de gr?o de soja triturado (STC); concentrado a base de gr?o de soja tostado (SGT) e concentrado a base de gr?o de soja triturado e tostado (STT). Os consumos de mat?ria seca (MS), mat?ria org?nica (MO), prote?na bruta (PB), fibra em detergente neutro (FDN), carboidratos totais (CHO) e nutrientes digest?veis totais (NDT) n?o foram influenciados pela dieta, entretanto o consumo de extrato et?reo (EE) foi superior para os animais que receberam dietas com inclus?o de soja em rela??o aos que receberam farelo de soja. As digestibilidades da MS, MO, FDN, PB e EE n?o diferiram, enquanto que a digestibilidade dos CHO foi alterada em fun??o da dieta. A produ??o de leite corrigida diferiu entre as dietas, sendo que o tratamento com SGC foi o que propiciou a menor produ??o de leite em rela??o aos demais tratamentos que n?o diferiram entre si. A composi??o do leite n?o variou independente da forma de utiliza??o da soja. Conclui-se, portanto, que o farelo de soja pode ser substitu?do pela soja gr?o triturada ou pela soja tostada, triturada ou n?o em dietas de vacas de baixa produ??o em pastagem de Brachiaria decumbens sem que haja preju?zo na produ??o e composi??o do leite. Assim, recomenda-se o uso destas mat?rias primas alternativas sempre que sua inclus?o representar menor custo da dieta. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Zootecnia, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2011. / ABSTRACT The objective of this work was to evaluate the intake and digestibility of nutrients, as well as production and milk composition of crossbred cows (Holstein x Zebu) kept on pasture and supplemented with sugarcane and concentrated (28% CP). Five cows with 150 ? 14 days of lactation and average production of 7,1 ? 2,1 kg/day of milk were assigned in a Latin Square 5 x 5. The treatments were constituted of a diet control composed of soybean treated under different processing?s and soya bean in natura, and all the animals received, in a casualized way, one of the following treatments: concentrated based on soybean meal (FS); concentrated based on raw soybean (SGC); concentrated based on raw ground soybean (STC); concentrated based on roasted soybean (SGT); and concentrate based on roasted soybean ground (STT). The intake of dry matter (MS), organic matter (MO), crude protein (PB) neutral detergent fiber (FDN), total carbohydrates (CHO) and total digestible nutrients (NDT) were not influenced by diet, however the intake of ether extract (EE) was higher for animals fed with diets with soybean added compared with those fed with soybean meal. The digestibility of MS, MO, FDN, PB and EE did not differ, whereas the digestibility of CHO was changed due to the diet. The corrected milk production differed between treatments, and treatment with raw soybean had the lowest milk production in relation to the other treatments that did not differ among themselves. Milk composition did not vary independently of the type of soybeans used. It is concluded therefore that the soybean meal can be replaced by soya bean crushed or by the roasted soybean, ground or not in diets of cows with low production in Brachiaria decumbens pastures with no loss in milk?s production and composition. Therefore, it is recommended the use of these alternative feeds whenever they present a lower market price.

Submitted by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-01-05T12:08:09Z No. of bitstreams: 2 hudson_bernardes_nunes_oliveira.pdf: 547878 bytes, checksum: 66378b8548d84c2a55ae2734b5c7395b (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-01-05T12:08:35Z (GMT) No. of bitstreams: 2 hudson_bernardes_nunes_oliveira.pdf: 547878 bytes, checksum: 66378b8548d84c2a55ae2734b5c7395b (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-01-05T12:09:00Z (GMT) No. of bitstreams: 2 hudson_bernardes_nunes_oliveira.pdf: 547878 bytes, checksum: 66378b8548d84c2a55ae2734b5c7395b (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) / Made available in DSpace on 2015-01-05T12:09:00Z (GMT). No. of bitstreams: 2 hudson_bernardes_nunes_oliveira.pdf: 547878 bytes, checksum: 66378b8548d84c2a55ae2734b5c7395b (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) Previous issue date: 2013 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES) / Objetivou-se avaliar os efeitos de uma mistura comercial de ?leos essenciais (capsaicina, eugenol, cinamalde?do e carvacrol) microencapsulados, com inclus?es crescentes sobre o consumo, digestibilidade, desempenho e a composi??o do leite de 20 vacas Holandesas prim?paras. O delineamento adotado foi inteiramente casualizado, com parcelas subdivididas no tempo em esquema 4 ? 3 ? 5. A dieta experimental foi formulada para atender ?s exig?ncias dos animais e as doses de ?leos essenciais testadas foram de 0; 1,5; 3,0 e 4,5 gramas por animal ao dia. O experimento teve dura??o de 60 dias e foi divido em tr?s per?odos de 20 dias cada, com as coletas de alimentos, sobras, fezes e leite realizadas nos ?ltimos tr?s dias para posterior an?lise e c?lculos. A an?lise de vari?ncia foi realizada para todas as vari?veis usando modelo linear e, quando os efeitos foram significativos (P<0,05), o teste t-Student foi aplicado para discriminar as m?dias de quadrados m?nimos e quando n?o significativos, foi realizada uma an?lise descritiva. As correla??es existentes entre as medidas tomadas no mesmo animal e a produ??o antes do in?cio do experimento foi usada como covari?vel para verificar se a produ??o pr?via influenciou o resultado. N?o houve intera??o entre os tratamentos e os per?odos avaliados e o efeito dos tratamentos n?o foi significativo (P>0,05) para as vari?veis consumo, digestibilidade, desempenho e composi??o do leite. Mas, avaliando separadamente os per?odos testados, encontrou-se diminui??o significativa (P<0,05) na produ??o de leite e aumento nas concentra??es de s?lidos totais (ST). N?o houve diferen?a (P>0,05) para os teores de extrato seco desengordurado e contagem de c?lulas som?ticas. Concluiu-se que o composto de ?leos essenciais n?o teve intera??o com os per?odos estudados e os n?veis usados n?o influenciaram as vari?veis consumo, digestibilidade, produ??o e composi??o do leite de vacas holandesas prim?paras, indicando a necessidade de maiores estudos sobre o assunto. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Zootecnia, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2013. / ABSTRACT Aimed to evaluate the effects of a commercial mixture of essential oils (capsaicin, eugenol, cinnamaldehyde and carvacrol) microencapsulated with increasing inclusion on intake, digestibility, performance and milk composition of primiparous Holstein cows 20.The design was completely randomized split plot with a 4 ? 3 ? 5 layout. The experimental diet was formulated to meet the requirements of the animals and the doses of essential oils tested were 0, 1.5, 3.0 and 4.5 grams per animal per day. The experiment lasted 60 days and was divided into three periods of 20 days each, with the collection of food scraps, feces and milk made in the last three days for further analysis and calculations. Analysis of variance was performed for all variables using linear model and when effects were significant (P <0.05), Student's T test was used to discriminate the least square means and when not significant, a descriptive analysis was performed.The correlations between the measures taken in the same animal and production before the start of the experiment was used as a covariate to determine whether the prior production influenced the outcome.There was no interaction between treatment and observation periods and the effect of the treatments was not significant (P> 0.05) for the variable intake, digestibility, performance and milk composition. But, evaluating separately tested periods, showed a significant decrease (P <0.05) on milk production and increased concentrations of total solids (TS).There was no difference (P> 0.05) to the levels of total solids and somatic cell count.It was concluded that the compound of essential oils had no interaction with the periods studied and the levels used did not influence variables intake, digestibility, milk production and composition of primiparous Holstein cows, indicating the need for further studies on the subject.