Evaluation of catfish oil as a feedstuff for lactating Holstein cows

Genetic Regulation of Feed Efficiency in Lactating Holstein Cows

Methane prediction in dry and lactating Holstein cows.

Data from six experiments (two with dry cows) were used to predict partitioning of gross energy to CH4 in Holstein cows using selected independent variables, some of which were intercorrelated, and a stepwise backward elimination regression procedure. Methane outputs ranged from 3.1 to 8.3% (mean 5.5) of gross energy intake for 134 dry cow balance trials and from 1.7 to 14.9% (mean 5.2) of gros...

Evaluation of Sel-PlexTM as a Source of Selenium for Gestating and Lactating Beef Cows

The objective of this study was to compare the plasma selenium (Se) concentrations of cows and calves consuming inorganic Se vs an organic yeast Se source (Sel-PlexTM, Alltech, Inc., Nicholasville, KY). Mature cows were fed one of the two mineral treatments, which were offered freechoice with a targeted intake of 2 oz/ head/d. Each supplement contained equal recommended amounts of supplemental ...

Citrus Pulp as a Dietary Source of Antioxidants for Lactating Holstein Cows Fed Highly Polyunsaturated Fatty Acid Diets

The effects of feeding pelleted citrus pulp (PCP) as a natural antioxidant source on the performance and milk quality of dairy cows fed highly polyunsaturated fatty acid (FA) diets were evaluated. Four lactating Holstein cows were assigned to a 4×4 Latin-square. Treatments, on a dry matter (DM) basis, were i) control diet; ii) 3% soybean oil; iii) 3% soybean oil and 9% PCP and; iv) 3% soybean o...

LECITHIN AS A SUPPLEMENT FOR MID-LACTATINg DAIRy COwS

1 Dept of Medicine Animal, Production and Health Padova Univ., Agripolis, Viale dell’Università, 16, 35020 Legnaro (PD), Italy 2 Istituto Zooprofilattico delle Venezie, Viale dell’Università, 10, 35020 Legnaro (PD), Italy ABSTRACT The study aimed at evaluating the effect of a daily dose of 14 g of choline administrated by using soy lecithins (LC group), a by-product of the biodiesel production ...