36 documents found, page 1 of 4
Investigation of the strength of copper and zinc bonds with other constituents ...
Leonel,Fernando de Paula; Moreira,Leonardo Marmo; Zanetti,Diego; Gomes,Raphael dos Santos; Engle,Terry EugeneABSTRACT The objective of the present study was to evaluate the effect of feed type, pH, and Cu and Zn concentration on Cu and Zn binding with different feedstuffs after in vitro incubation in water. For this purpose, six feedstuffs (wheat straw, grass hay, corn silage, dried distillers grains with solubles, ground corn, and soybean meal) were incubated in ultrapure water (pH≈6.4) with supplemental Cu concentra...
Public policies for enhancing diffusion of technology: a network analysis for a...
Simões,Andre Rozemberg Peixoto; Bueno,Newton Paulo; Almeida,Felipe Miranda de Souza; Nicholson,Charles Frederick; Reis,Janderson Damaceno dosABSTRACT The objective of this study is to apply Social Network Analysis (SNA) approach to improve the understanding of how to shape effective information diffusion policies among small-scale dairy farmers in rural communities of Brazil, for whom milk production is an important source of income. We interviewed 24 dairy farmers representing all participants of a dairy farmer association in a small-scale producti...
Overprice on purchase of replacement cattle and genetic group as variables of e...
Pereira,Kárito Augusto; Leonel,Fernando de Paula; Reis,Janderson Damaceno dos; Villela,Severino Delmar JunqueiraABSTRACT The objective of this study was to analyze the economic result of feedlot operation for three genetic groups of cattle (Nellore, Nellore crossing with other Zebuine breeds, and Dairy crossbred) as a function of the overprice on the purchase price of cattle to be feedlot-finished. The study involved data of 57,589 animals divided into 709 lots originating from operation cycles from March to December 201...
Influence of lipid supplementation on milk components and fatty acid profile
Machado,Henrique Valentim Nunes; Pereira,José Carlos; Bettero,Vitor Pereira; Leonel,Fernando de Paula; Araújo,Raphael Pavesi; Moreira,Leonardo MarmoABSTRACT The objective of this study was to evaluate the effects of different lipid sources in diets for lactating cows on milk yield and composition, conjugated linoleic acid (CLA) content, and fatty acid profile in the milk fat. Five primiparous Holstein cows were distributed in a 5 × 5 Latin square design. Treatments were: control (no lipid addition) and four other diets containing different lipids sources -...
Desempenho produtivo e parâmetros sanguíneos de vacas leiteiras em pastejo supl...
Fonseca,Angela Aparecida da; Zanine,Anderson de Moura; Ribeiro,Marinaldo Divino; Leonel,Fernando de Paula; Ferreira,Daniele de JesusResumo: O objetivo deste trabalho foi avaliar o efeito da alimentação suplementar de resíduos de feijão no desempenho produtivo e nos parâmetros sanguíneos de vacas leiteiras em pastejo. Foram utilizadas oito vacas mestiças, com peso médio de 500 kg, distribuídas em duplo quadrado latino 4×4, alimentadas com alimentação suplementar de 134, 240, 348 e 449 g kg-1 de resíduos de feijão na ração concentrada. Os ani...
Kinetics of digestion of low-quality forage grazed by beef cattle fed supplemen...
Gomes,Raphael dos Santos; Oliveira,Tadeu Silva de; Pereira,José Carlos; Vieira,Ricardo Augusto Mendonça; Silva,Cássio José da; Leonel,Fernando de PaulaABSTRACT This experiment was conducted to evaluate the degradation kinetics and microbial efficiency of beef cattle grazing on low-quality forage and receiving supplements with different levels of rumen undegradable protein (RUP). The animals grazed on palisade grass pasture solely or this pasture and supplement containing 40 or 60 g of RUP per 100 g of crude protein (CP). The degradation profiles of neutral de...
Performance and metabolite profile of dairy cows fed tropical grasses and conce...
Gomes,Raphael dos Santos; Oliveira,Tadeu Silva de; Pereira,José Carlos; Vieira,Ricardo Augusto Mendonça; Henrique,Douglas SampaioABSTRACT 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 performance, plasma concentrations of urea-N, glucose, and...
Soybean in different forms of processing in the feeding of crossbred cows on br...
Andrade,Vinícius Raimundi; Leonel,Fernando de Paula; Villela,Severino Delmar Junqueira; Carvalho,Juliana do Carmo; Araújo,Raphael PavesiThe objective was to evaluate intake and digestibility of nutrients, as well as milk production and composition of the milk from F1 Holstein × Gyr cows kept on pasture, supplemented with sugarcane and concentrate (28% CP). Five cows with 150±14 lactation days and average milk production of 7.1±2.1 kg/day were distributed in a 5 × 5 Latin square design. The treatments were: soybean meal-based concentrate; soy be...
Slow-release urea in diets for lactating crossbred cows
Santiago,Bruno Tadeu; Villela,Severino Delmar Junqueira; Leonel,Fernando de Paula; Zervoudakis,Joanis Tilemahos; Araújo,Raphael PavesiThe objective of this study was to evaluate the performance of F1 (Holstein × Zebu) cows in lactation according to different levels of substitution of soybean meal for a protein equivalent non-protein nitrogen originated from slow-release urea (SRU). Eight F1 (Holstein × Zebu) cows in the first third of lactation, with an average milk yield of 12.7 kg (±3.1 kg)/day and a live weight of 552 kg (±30 kg), were use...
Kinetics of transit and degradation of the fiber from guinea grass silages enri...
Fialho,Filipe Ton; Villela,Severino Delmar Junqueira; Leonel,Fernando de Paula; Tamy,Wagner Pessanha; Araujo,Raphael PavesiThe objective was to study the kinetics of transit and degradation of the fiber from guinea grass and the waste from soybean pre-cleaning (WSPC), ensiled with different proportions of mass (0, 100, 150, and 200 g WSPC/kg total mass). Four crossbred (Gyr × Holstein), fistulated cattle with an average body mass of 400±50 kg were organized in a 4 × 4 Latin square experimental design. The fiber utilized in the stud...