Two experiments were conducted to evaluate whether fermentation end products in silage affect intake and digestion in beef cattle. Six rumen-cannulated Nellore steers were randomly assigned to a replicated 3 × 3 Latin square design with 14-d periods. Each period consisted of 9 d for adaptation and 5 d for sample collection. Steers were housed in a tie-stall barn and individually fed once daily ...

Improving feed utilization efficiency in dairy cattle could have positive economic and environmental effects that would support the sustainability of industry. Identifying key differences metabolism between high low feed-efficient animals is vital to enhancing conversion efficiency. Therefore, our objectives were (1) determine whether cows grouped by either or measurable net fat carbohydrate ac...

An experiment was carried out to determine net microbial protein supply to ruminants from 15 tropical feeds. The study was done at Lyamungo research institute, on the slopes of Mt. Kilimanjaro, Tanzania in 1993. Twenty Bos Taurus Bos Indicus bulls were used in three periods in a completely randomised design. The initial 19 days of each period were for adaptation by the bulls to their new enviro...

The event of giving birth is an essential part of animal production. In dairy cattle production, there are substantial economical and welfare-related challenges arising around the time of parturition, and hence increased focus on efficient management of the calving cow. Drawing on the research literature on prepartum maternal behavior, this review compares cattle to other members of the ungulat...

The brown midrib-3 (bm3) gene mutation has been incorporated into corn plants to potentially improve fiber digestibility. The objectives of this study were to determine the effect of bm3 corn silage on digestion and performance of growing beef steers and to determine whether limiting intake would further enhance fiber digestibility of bm3 corn silage. A bm3 hybrid and its isogeneic normal count...

Dairy cows fed on perennial-ryegrass pasture produce higher-quality milk in terms of fatty-acid composition; however, they produce much less milk compared to dairy cows under other systems. The low dry-matter intake (DMI) has been identified as the main factor responsible for the lower milk production in pasture-based systems. To maximize milk production from those systems it is important to ma...

A series of 3 experiments were conducted to determine the in vitro and in situ disappearance, preference, and performance of steers consuming increasing concentrations of a novel feedstuff called algae meal (ALG). In Exp. 1 and 2, 3 ruminally cannulated steers (998 ± 103 kg BW) and 4 treatments were utilized: a dry-rolled corn-based diet (CON), or 15% ALG (A15), 30% ALG (A30), or 45% ALG (A45) ...

ten male merghoz goats with initial live weights of 29.2 ± 1.2 kg (mean±se) were used to investigate the effect of natural changes in photoperiod on dry matter intake (dmi) and reproductive activity during a 365 day study. the bucks were housed in individual pens, under natural daylength condition at west of iran, kermanshah (34˚ 18¢n and 47˚ 3¢e and 1420 m above sea level). a diet was offered ...

A series of 3 experiments were conducted to determine the in vitro and in situ disappearance, preference, and performance of steers consuming increasing concentrations of a novel feedstuff called algae meal (ALG). In Exp. 1 and 2, 3 ruminally cannulated steers (998 ± 103 kg BW) and 4 treatments were utilized: a dry-rolled corn-based diet (CON), or 15% ALG (A15), 30% ALG (A30), or 45% ALG (A45) ...

The effects of a live yeast supplement [Saccharomyces cerevisiae subspecies boulardii CNCM I-1079; ProTernative Stress Formula (PTSF) yeast, Ivy Natural Solutions, Overland Park, KS] on DMI, performance, and health of beef cattle were evaluated in 3 experiments. In Exp. 1, a pilot study was conducted with 10 healthy beef steers fed a 65% concentrate diet to evaluate the effects of florfenicol (...