Total Mixed Ration
Mostrando 1-12 de 14 artigos, teses e dissertações.
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1. Mycotoxin contamination of diets for beef cattle finishing in feedlot
ABSTRACT The objective of this survey was to identify what mycotoxins were present in ingredients used in diets offered to beef cattle in feedlots and their concentrations. The survey covered 30 Brazilian feedlots located in the five major beef-producing states. Samples of total mixed ration (TMR) and ingredients were collected and analyzed for mycotoxin usi
R. Bras. Zootec.. Publicado em: 28/11/2019
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2. Do live or inactive yeasts improve cattle ruminal environment?
ABSTRACT This research was conducted to investigate the effect of live and inactive sugarcane yeast on beef cattle voluntary intake, apparent digestibility of nutrients, ruminal pH, volatile fatty acids (VFA) concentrations, and ruminal ammonia. Five rumen-cannulated Nellore heifers were distributed in a 5×5 Latin square design, with five experimental perio
R. Bras. Zootec.. Publicado em: 22/07/2019
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3. Performance and metabolite profile of dairy cows fed tropical grasses and concentrates containing crude protein with low or high degradability
ABSTRACT Ten Holstein-Zebu crossbred cows distributed into two simultaneous Latin squares (5 × 5) as a 2 × 2 factorial arrangement formed by chopped sugarcane or elephant grass silage, both with high or low protein degradability supplements and a corn silage as a control treatment, were compared using orthogonal contrasts. The studied variables were the pe
R. Bras. Zootec.. Publicado em: 2016-09
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4. Conjugated linoleic acid of dairy foods is affected by cows’ feeding system and processing of milk
ABSTRACT The distribution of conjugated linoleic acid (CLA) in dairy products commercially available in Chile is poorly understood. This study aimed to assess the content of CLA in dairy cow products from Chile and the effect of processing fresh milk into dairy products. Samples of raw milk were categorized into two groups based on the animal feeding system
Sci. agric. (Piracicaba, Braz.). Publicado em: 2016-04
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5. Methane production of two roughage and total mixed ration as influenced by cellulase and xylanase enzyme addition
In recent decades supplementation of animal feeds with exogenous fibrolytic enzymes has substantially improved digestibility and animal performance. However, information related to associated methane production is limited and inconsistent. This study evaluated the effect of cellulase and xylanase enzymes on in vitro methane production of Eragrostis curvula h
Sci. agric. (Piracicaba, Braz.). Publicado em: 2015-02
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6. Effect of unsaturated fatty acid supplementation on digestion, metabolism and nutrient balance in dairy cows during the transition period and early lactation
The objective of this study was to evaluate the influence of unsaturated fatty acids in diets for dairy cows during the transition period and early lactation on intake, digestion and nutrient balance. Thirty-six multiparous and pregnant Holstein cows were randomly distributed to receive one of the experimental diets in the period from 35 days before the expe
R. Bras. Zootec.. Publicado em: 2014-04
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7. Uréia na alimentação de vacas leiteiras.
ABSTRACT: Urea is a non protein nitrogen compound that can be used to replace protein sources usually offered in ruminant nutrition. It is a technology that can be efficiently used in dairy cow nutrition, assuring good production levels. Taking to account the ruminant metabolism, the efficiency of urea use by ruminal microorganisms depends on the correct die
Planaltina. Publicado em: 2011
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8. Avaliação da forma de fornecimento da dieta e do processamento da palma forrageira (Opuntia fícus-indica Mill) para vacas em lactação
The aim of the present study was to assess the feeding strategy effect and the spineless cactus processing on intake and digestibility of different nutrients, milk production and composition, urea concentration in plasma and milk, and microbial protein production in lactating Holstein cows. Eight cows with a mean live weight of 453 75.8 kg, production of 14
Publicado em: 2009
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9. Levels of concentrate and rumen undegradable protein in the diet of lactating cows / Níveis de concentrado e de proteína não degradável no rúmen na dieta de vacas em lactação
The modern consumer increasingly choose quality products, and industry, seeking to adapt to this new trend, has sought to reward the producer by milk quality, especially with regard to its total solids composition. This way, an experiment was conducted at the Dairy Cattle Teaching, Research and Extension Unit of Animal Science Department of Universidade Fede
Publicado em: 2009
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10. Desempenho produtivo e reprodutivo e parâmetros sanguíneos de vacas leiteiras alimentadas com diferentes fontes de gordura no período de transição e inicio de lactação / Productive and reproductive performance and blood parameters of dairy cows feeding with different fat sources in transition period and early lactation
This study was carried out to evaluate the use of different fat sources in dairy rations, in transition period and early lactation on follicular dynamics, reproductive efficiency, nutrients intake and digestibility, composition and milk yield, composition of protein fraction and energy balance. Third Holstein cows, with production of 30,0 Kg/cow/day on previ
Publicado em: 2009
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11. The ruminal fermentation parameters in high yielding dairy cows fed total mixed ration. / Parâmetros ruminais em vacas em alta produção leiteira alimentadas com dieta total.
As melhores mudanças na produção do leite podem ser atingidas através da manipulação da dieta dos animais. Avaliar os processos de absorção de alimentos direcionados para a síntese do leite tem sido de grande importância nas pesquisas de nutrição animal O objetivo deste trabalho foi avaliar os parâmetros ruminais de vacas de alta produção alim
Publicado em: 2008
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12. DESEMPENHO E COMPORTAMENTO INGESTIVO DE OVELHAS EM LACTAÇÃO ALIMENTADAS COM DIETAS CONTENDO DIFERENTES NÍVEIS DE FIBRA EM DETERGENTE NEUTRO / PERFORMANCE AND INGESTIVE BEHAVIOR OF LACTATING EWES FED DIETS CONTAINING DIFFERENT LEVELS OF NEUTRAL DETERGENT FIBER
The study was carried out the Department of Animal Science of the Federal University of Santa Maria, with the objective to investigate the effect of the supply of diets with different levels of neutral detergent fiber (NDF) on the nutrients intake, daily milk yield (MP), milk composition (MC) and ingestive behavior of lactating ewes. Eighteen ewes, proceedin
Publicado em: 2006