Results 1 to 10 of about 36,664 (253)

Effects of dietary forage and calf starter diet on ruminal pH and bacteria in Holstein calves during weaning transition [PDF]

Frontiers in Microbiology, 2016
We investigated the relationship between ruminal pH and bacteria in calves fed calf starter with and without forage during weaning transition. First, 16 Holstein bull calves were obtained from dairy farms and equipped with rumen cannulas by cannulation ...
Yo-Han KIM, Rie NAGATA, Natsuki OHTANI, Toshihiro ICHIJO, Kentaro IKUTA, Shigeru SATO, Shigeru SATO   +6 more
doaj   +2 more sources

Efecto de la altura de pastura sobre el pH ruminal y producción láctea en vacas Holstein, en una pradera de rye grass – ecotipo cajamarquino (Lolium multiflorium) y trébol blanco (Trifolium repens)

Revista de Veterinaria y Zootecnia Amazónica, 2023
Se propuso determinar el efecto de la altura de pastura sobre pH ruminal y producción láctea en vacas Holstein alimentadas en praderas de rye grass y trébol blanco, en Cajamarca. Se determinó altura de la pastura, pH ruminal y producción láctea.
Zulema Rojas-Vásquez, Felipe Gutiérrez-Arce, Walter Gutiérrez-Arce   +2 more
doaj   +3 more sources

Efeitos dos níveis de fibra e de fontes de proteínas sobre a concentração do nitrogênio amoniacal e pH ruminal em novilhos Effects of fiber levels and protein sources on the ammonia nitrogen concentration and ruminal pH in steers [PDF]

Revista Brasileira de Zootecnia, 2004
O experimento foi conduzido com o objetivo de estudar os efeitos dos níveis de fibra (38,7 e 57,2% de fibra em detergente neutro - FDN), compostos pela associação da silagem de capim-elefante com cana-de-açúcar in natura picada e das fontes de proteína ...
Alecssandro Regal Dutra, Augusto César de Queiroz, José Tarcísio Lima Thiébaut, Leôncio Gonçalves Dutra, Roberto de Camargo Wascheck, Paulo César Moreira   +5 more
doaj   +2 more sources

EFEITO DO CALCÁRIO CALCÍTICO NO pH RUMINAL EFFECT OF CALCITIC CALCARIUM ON RUMINAL pH

Pesquisa Agropecuária Tropical, 2007
<!-- @page { margin: 2cm } --> <p class="western" align="justify">O experimento foi conduzido no Departamento de Zootecnia da Escola de Veterinária da Universidade Federal de Goiás. Foram utilizados 12 ovinos, divididos em blocos e confinados
Denise Regina Macário, Dirson Vieira, Miguel Joaquim Dias, Reginaldo Nassar Ferreira   +3 more
doaj   +2 more sources

Association between Ruminal pH and Rumen Fatty Acids Concentrations of Holstein Cows during the First Half of Lactation

Ruminants, 2022
Ruminal pH in dairy cows follows a diurnal fluctuation; low values are indicative of subacute ruminal acidosis and are associated with alterations of rumen fatty acids concentrations.
Georgios C. Kitkas, Georgios E. Valergakis, Maria Kritsepi-Konstantinou, Athanasios I. Gelasakis, Panagiotis D. Katsoulos, Emmanouil Kalaitzakis, Nikolaos K. Panousis   +6 more
doaj   +1 more source

Diurnal Ruminal pH and Temperature Patterns of Steers Fed Corn or Barley-Based Finishing Diets

Animals, 2021
This study evaluated the effects of corn or barley finishing diets on ruminal pH and temperature and their relationship to feed intake events using continuous reticulorumen monitoring of feedlot steers.
Hannah M. DelCurto-Wyffels, Julia M. Dafoe, Cory T. Parsons, Darrin L. Boss, Timothy DelCurto, Samuel A. Wyffels, Megan L. Van Emon, Janice G. P. Bowman   +7 more
doaj   +1 more source

The effect of pH on ruminal methanogenesis [PDF]

FEMS Microbiology Ecology, 1996
When a fistulated cow was fed an all forage diet, ruminal pH remained more or less constant (6.7 to 6.9). The ruminal pH of a concentrate-fed cow decreased dramatically in the period soon after feeding, and the pH was as low as 5.45. Mixed ruminal bacteria from the forage-fed cow converted CO2 and H2 to methane, but the ruminal fluid from the ...
Jo Ann S. Kessel, James B. Russell
openaire   +2 more sources

Evaluation of relationship between ruminal pH and the proportion of de novo fatty acids in milk

JDS Communications, 2021
The objective of this study was to evaluate the relationship between ruminal pH and milk de novo fatty acid (DNFA) concentrations determined by Fourier-transform infrared spectroscopy.
R. Fukumori, W. Shi, S. Oikawa, M. Oba
doaj   +1 more source

Factors associated with ruminal pH at herd level [PDF]

Journal of Dairy Science, 2012
The objective of this study was to evaluate factors associated with ruminal pH at herd level. Four hundred and thirty-two cows of a Thuringian dairy herd were sampled before claw trimming using a rumen fluid scoop. Volume and pH of the rumen sample were measured, and lactation number, percentage of concentrates in the ration, days in milk (DIM), time ...
T, Geishauser, N, Linhart, A, Neidl, A, Reimann   +3 more
openaire   +2 more sources

Dietary molasses increases ruminal pH and enhances ruminal biohydrogenation during milk fat depression [PDF]

Journal of Dairy Science, 2011
Feeding high-concentrate diets has the potential to cause milk fat depression, but several studies have suggested that dietary sugar can increase milk fat yield. Two experiments were conducted to evaluate the ability of dietary molasses to prevent milk fat depression in the presence of a 65% concentrate diet. In trial 1, molasses replaced corn grain at
C A, Martel, E C, Titgemeyer, L K, Mamedova, B J, Bradford   +3 more
openaire   +2 more sources