58 documents found, page 1 of 6
Characterization of dystocia in a herd of Holstein dairy cows in Brazil
Lourenço,Jean Carlos Steinmacher; Ossani,Paulo Cesar; Salles,Márcia Saladini Viera; Bánkuti,Ferenc Istvan; Almeida,Rodrigo de; Rossoni,Diogo FranciscoAbstract The objective of this study was to characterize calvings with low and high difficulty based on the productive and reproductive performance of dairy cows. Calvings were grouped in no calving assistance, calving with low assistance, and calving with high assistance. The original data set comprised 1,902 calving records obtained from a large dairy farm in Southeast Brazil. Factor analysis was applied usin...
Associations of days open with milk urea nitrogen and other herd traits in dair...
Almeida,Rodrigo de; Doska,Maria Cecília; Horst,José Augusto; Valloto,Altair Antônio; Santos,Geraldo Tadeu dos; Lima,Luciano Soares deABSTRACT We evaluated the association of monthly milk urea N (MUN) concentrations before conception and days open in high-producing dairy cows from commercial herds in Southern Brazil. Other herd traits were also investigated regarding their relationship with days open. A database containing 16,569 monthly test-day records (obtained from 3,926 lactations of 2,145 cows) for productive, reproductive, and milk qua...
Nutritive value of Saanen goat diets with dried distillers grains with solubles...
Pontes,Vanessa Pereira; Alcalde,Claudete Regina; Pili,Fernanda Maraquena Soares; Altero,Jennifer Braga; Duarte,Vanessa; Teixeira,Ubiara Henrique GomesABSTRACT The objective with this study was to evaluate the effect of including dried distillers grains with solubles (DDGS) as a replacement for soybean meal on feed intake, digestibility, and total digestible nutrients (TDN), as well as plasmatic glucose and serum urea concentrations. Fifteen Saanen goats were distributed in a completely randomized design with three treatments and five replicates. Treatments w...
Influence of forage production area, concentrate supply, and workforce on produ...
Koerich,Guilherme; Damasceno,Julio Cesar; Bánkuti,Ferenc Istvan; Parré,José Luiz; Santos,Geraldo Tadeu dosABSTRACT This study aimed to investigate the influence of forage production area, concentrate supply, and farm labor on characterization of milk production systems (MPS) and their productive results. Milk volume data provided in 2014 by 110 dairy farms located in the eastern region of Santa Catarina State, Brazil, were obtained from a dairy industry. Forty-four farms with different production levels were select...
The occurrence of aflatoxigenic Aspergillus spp. in dairy cattle feed in Southe...
Variane,Augusto Carlos Favaretto; Santos,Fabiane Cristina dos; Castro,Fausto Fernandes de; Barbosa-Tessmann,Ione Parra; Santos,Geraldo Tadeu dosABSTRACT The presence of mycotoxins or related fungi in animal feed is a major problem for animal and human health. Silage and concentrated feed samples were collected from 21 dairy farms in the Western part of Paraná state in Southern Brazil. Water activity and pH of all samples were measured, and each sample was analyzed to check for the presence of aflatoxigenic Aspergillus. Water activity was observed to be...
Oocyte production in Nellore cows supplemented with long-chain fatty acid soaps
Souza,Moacir Rogério de; Santos,Geraldo Tadeu dos; Lima,Luciano Soares de; Mazucheli,Josmar; Zeoula,Lúcia Maria; Rigolon,Luiz PauloABSTRACT This study was conducted to evaluate the effects of long-chain fatty acid soaps (LCFAS) of soybean oil on the production and quality of aspirated cumulus-oocyte complexes (COC) of lactating Nellore (Bos taurus indicus) cows. The effects of LCFAS on the plasma concentration of lipoproteins, total cholesterol, triacylglycerol, urea N, and insulin were also addressed. Thirty lactating Nellore cows were ra...
Horizontal arrangements: strategy for reducing the asymmetry information for da...
Brito,Marcel Moreira de; Bánkuti,Ferenc Istvan; Bánkuti,Sandra Mara Schiavi; Ferreira,Maria Clara Melo; Damasceno,Júlio César; Santos,Geraldo Tadeu dosAn empirical investigation was conducted to study whether dairy farmers involved in horizontal arrangements (HA) have lower information asymmetry than those who do not participate in HA. Our assumption is that greater access to information results in fewer risky decisions in production systems. One hundred and twenty semi-structured questionnaires were applied to dairy farmers located in four different geograph...
INCLUSION OF PROTECTED FAT IN DIETS ON THE MILK PRODUCTION AND COMPOSITION OF S...
Molina,Bruna Susan de Labio; Alcalde,Claudete Regina; Hygino,Bruna; Santos,Sérgio Mangano de Almeida; Gomes,Ludmila Couto; Santos,Geraldo Tadeu dosAccording on the fat source included in the diets for goats, the milk production can be increased and milk fatty acid composition can be improved. This study was conducted to evaluate the inclusion of protected fat (CSFA - calcium salts of fatty acids) in the diets of lactating Saanen goats on milk production and composition. Five Saanen goats (63.23 ± 9.08 kg body weight and 105 ± 3 days of lactation) were dis...
Technical assistance and seasonality in the diet and production of dairy herds ...
Tinini,Rodrigo Cesar dos Reis; Zambom,Maximiliane Alavarse; Pozza,Magali Soares dos Santos; Fernandes,Tatiane; Castagnara,Deise DalazenThe objective of the present study was to characterize the food sources, as well as the composition and quality of milk obtained from household farms of western Paraná State (Brazil) with and without technical assistance during the different seasons. For such, 24 properties were selected, 12 of which only received assistance and technical support. Four milk samples were taken (summer, autumn, winter and spring)...
Effects of dietary energy levels using calcium salts of fatty acids on nutritiv...
Souza,Rodrigo de; Alcalde,Claudete Regina; Hygino,Bruna; Molina,Bruna Susan de Labio; Santos,Geraldo Tadeu dos; Gomes,Ludmila CoutoPeripartum is a critical period for dairy goats, as dry matter intake (DMI) is not enough to supply the energy requirement for foetal growth and subsequent lactation. The objective of this study was to evaluate the use of calcium salts of fatty acids (CSFA) to increase dietary energy level of peripartum dairy goats and its effects on nutritive value of diets and milk quality. Twenty multiparous Saanen goats (bo...