Weight and feed consumption of 197 bulls were recorded monthly in a serial slaughter experiment continuing over a period of 24 mo. The bulls were produced in a modified five-breed diallel of the Angus, Brahman, Hereford, Holstein and Jersey breeds. Our objective was to estimate efficiency of feed conversion for weight gain for each breed and cross. The model included average weight gain per day...

Processing feed onfarm using a portable grinder-mixer provides an affordable and flexible manufacturing system for producers with small to intermediate size operations (50 to 400 farrow to finish sows). The portable grinder-mixer differs from a stationary mill in several important areas during feed processing. These differences will be considered by examining five functions or cost centers in a...

Important achievements have been made to improve feed efficiency of farm livestock, but molecular mechanisms determining utilization remain unclear. The objective this work was identify the reasons behind divergent efficiencies in fattening lambs. Twenty newborn male Assaf lambs were fed milk replacer (MR) ad libitum using an automatic feeder, and weaned progressively during last 7 days artific...

This study aims to determine the effect of conventional vegetable oil as feed additive, according soybean oil, coconut corn and efficiency, conversion ratio (FCR) fat content red tilapia. Feeding trial in this had used Completely randomized design (CRD), with 4 treatments repeated times. Red tilapia much 160 initial weight 25-40g/head, kept an aquarium a volume 20 dm3 density 2 ind./L, fed pell...

Past research on feed restriction methods with turkey breeder hens has involved the feeding of 1) high-fiber or low-energy diets, 2) low dietary protein, 3) limited quantities of feed, 4) rations on a skip-a-day program, 5) distasteful compounds, or 6) combinations of these methods. In general, feed-restricted turkey breeder hens showed a reduction in BW and a delay in sexual maturity at time o...

A high concentrate diet was fed at 1.2, 1.5, 1.8 and 2.1% of body weight to four Angus steers (258 kg) equipped with cannulas in the proximal duodenum and distal ileum. As level of feed intake increased, flow of N, nonammonia N, microbial N and feed N to the small intestine increased linearly (P less than .05). Bypass of feed N increased from 44 to 71% of fed N. At the highest intake level, rum...