Milk traits of lactating cows submitted to feed restriction
| Autor: | André Thaler Neto, Maira Balbinotti Zanela, C. McManus, Vilmar Fruscalso, Alexandre Mossate Gabbi, Rosângela Silveira Barbosa, Vivian Fischer, Fernando André Schmidt, Marcelo Tempel Stumpf |
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| Přispěvatelé: | Alexandre Mossate Gabbi, UFPEL, Concepta Margareth McManus, Faculdade de Agronomia e Medicina Veterinária, Universidade de Brasília, MAIRA BALBINOTTI ZANELA, CPACT, Marcelo Tempel Stumpf, ROSANGELA SILVEIRA BARBOSA, CPATSA, Vilmar Fruscalso, EMATER, André Thaler Neto, Universidade do Estado de Santa Catarina, Lages, SC., Fernando André Schmidt, UFSC, Vivian Fischer. |
| Rok vydání: | 2015 |
| Předmět: |
milk production
Animal feed Live weight Lactose Titratable acid Estabilidade etanol Biology Componentes do leite Ethanol stability Nutrient limitation chemistry.chemical_compound fluids and secretions Food Animals Milk production Lactation medicine Animals Food science Dairy cattle Restrição alimentar Produção de leite Ethanol Body Weight Limitação de nutrientes dairy cattle 0402 animal and dairy science food and beverages Milk components 04 agricultural and veterinary sciences Animal Feed 040201 dairy & animal science Milk medicine.anatomical_structure chemistry Leite 040103 agronomy & agriculture 0401 agriculture forestry and fisheries Cattle Female Gado Leiteiro Animal Science and Zoology Food Deprivation Produção animal Rho Guanine Nucleotide Exchange Factors |
| Zdroj: | Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA-Alice) Empresa Brasileira de Pesquisa Agropecuária (Embrapa) instacron:EMBRAPA |
| ISSN: | 1573-7438 0049-4747 |
| Popis: | Data from five experiments with dairy cows where feed was restricted to 0, 40, and 50 % of the ad libitum amount, with 259 observations, were subjected to multivariate analyses to determine the effects of severity and duration of feed restriction on production, physical-chemical characteristics, ethanol stability, and somatic cell score of milk. A negative relationship was seen between the severity and duration of feed restriction with milk production, lactose content, titratable acidity, and milk stability to the ethanol test. The milk stability to the ethanol test, protein content, milk yield, and somatic cells score were the most important attributes retained by the discriminant analysis. Milk stability to the ethanol test, live weight, days in restriction, and pH were the most important characteristics explaining the variance within the different levels of feed restriction. Milk production and ethanol stability were significantly lower in both levels of feed restriction compared with the group fed ad libitum. When feed restriction was followed by refeeding, the difference observed in ethanol stability was the first discriminant variable, followed by the difference in unstable milk frequency and titratable acidity. Increments in the severity and duration of feed restriction negatively affect milk production and milk ethanol stability. Made available in DSpace on 2022-09-28T17:05:28Z (GMT). No. of bitstreams: 1 Milk-traits-of-lactating-cows-submitted-to-feed-restriction-2016.pdf: 493070 bytes, checksum: df59ce3b34285894a31372b719e930f0 (MD5) Previous issue date: 2016 |
| Databáze: | OpenAIRE |
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