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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.
| Identifer | oai:union.ndltd.org:IBICT/oai:acervo.ufvjm.edu.br/jspui:1/781 |
| Date | 29 April 2011 |
| Creators | Andrade, Vin?cius Raimundi |
| Contributors | Villela, Severino Delmar Junqueira, Leonel, Fernando de Paula, Pereira, Idalmo Garcia, Santos, Roseli Aparecida dos, Leonel, Fernando de Paula, Universidade Federal dos Vales do Jequitinhonha e Mucuri (UFVJM), Villela, Severino Delmar Junqueira |
| Publisher | UFVJM |
| 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 UFVJM, instname:Universidade Federal dos Vales do Jequitinhonha e Mucuri, instacron:UFVJM |
| Rights | A concess?o da licen?a deste item refere-se ao ? termo de autoriza??o impresso assinado pelo autor, assim como na licen?a Creative Commons, com as seguintes condi??es: Na qualidade de titular dos direitos de autor da publica??o, autorizo a Universidade Federal dos Vales do Jequitinhonha e Mucuri e o IBICT a disponibilizar por meio de seus reposit?rios, sem ressarcimento dos direitos autorais, de acordo com a Lei n? 9610/98, o texto integral da obra disponibilizada, conforme permiss?es assinaladas, para fins de leitura, impress?o e/ou download, a t?tulo de divulga??o da produ??o cient?fica brasileira, e preserva??o, a partir desta data., info:eu-repo/semantics/openAccess |
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