Poultry processing and marketing, specializing in eggs, chickens and turkeys.

Other slight variations in title.

Genetics of the ranch mink.

Mode of access: Internet.

X disease in chickens ...

Paper submitted in competition for the poultry disease essay award for the year 1951-1952.

Summary of results with methionine in turkey diets.

On cover: Du Pont methionine for broiler, starter and turkey rations.

The new farmer's calendar; or, Monthly remembrancer, for all kinds of country business: comprehending all the material improvements in the new husbandry, with the management of live stock ...

Goldsmiths'-Kress no. 17888.

Farm buildings.

Mode of access: Internet.

Breeding and developing the trotter,

Mode of access: Internet.

The National poultry improvement plan /

"In cooperation with poultry leaders, poultry breeders, and members of the breeder and commercial hatchery industry."

The National poultry improvement plan /

"In cooperation with poultry leaders, poultry breeders, and members of the breeder and commercial hatchery industry."

The National poultry improvement plan /

"In cooperation with poultry leaders, poultry breeders, and members of the breeder and commercial hatchery industry."

The National poultry improvement plan /

"In cooperation with poultry leaders, poultry breeders, and members of the breeder and commercial hatchery industry."

The National poultry improvement plan /

"In cooperation with poultry leaders, poultry breeders, and members of the breeder and commercial hatchery industry."

The farmer and stockbreeder year book and country gentleman's almanack.

Mode of access: Internet.

Biogenic amines in Australian animal by-product meals

Biogenic amines were determined in Australian by-product meals including fish meals, poultry meals, meat meals, feather meals and blood meals. They were extracted with 0.1 mol/L HCl, derivatised with dansyl chloride and analysed using HPLC with UV detection at 254 nm. Median levels of putrescine, cadaverine and histamine were determined in the by-product meals, with the ranges being 13-102 mg/kg, 7-220 mg/kg and 4-570 mg/kg, respectively. High levels of biogenic amines were found particularly in fish meals. The results indicate that further studies are required to determine the maximum limits for biogenic amines in by-product meals that will not impair production when fed to poultry.

Influence of phytase and xylanase supplementation on growth performance and nutrient utilisation of broilers offered wheat-based diets

Individual and combined supplementation of phosphorus-adequate, wheat-based broiler diets with exogenous phytase and xylanase was evaluated in three experiments. The effects of the enzyme combination in lysine-deficient diets containing wheat and sorghum were more pronounced than those of the individual feed enzymes. The inclusion of phytase plus xylanase improved (p<0.05) weight gains (7.3%) and feed efficiency (7.0%) of broilers (7-28 days post-hatch) and apparent metabolisable energy (AME) by 0.76 MJ/kg DM. Phytase plus xylanase increased (p<0.05) the overall, apparent ileal digestibility of amino acids by 4.5% (0.781 to 0.816); this was greater than the responses to either phytase (3.6%; 0.781 to 0.809) or xylanase (0.7%; 0.781 to 0.784). Absolute increases in amino acid digestibility with the combination exceeded the sum of the individual increases generated by phytase and xylanase for alanine, aspartic acid, glutamic acid, glycine, histidine, isoleucine, phenylalanine, threonine, tyrosine and valine. These synergistic responses may have resulted from phytase and xylanase having complementary modes of action for enhancing amino acid digestibilities and/or facilitating substrate access. The two remaining experiments were almost identical except wheat used in Experiment 2 had a higher phytate concentration and a lower estimated AME content than wheat used in Experiment 3. Individually, phytase and xylanase were generally more effective in Experiment 2, which probably reflects the higher dietary substrate levels present. Phytase plus xylanase increased (p<0.05) gains (15.4%) and feed efficiency (7.0%) of broiler chicks from 4-24 days post-hatch in Experiment 2; whereas, in Experiment 3, the combination increased (p<0.05) growth to a lesser extent (5.6%) and had no effect on feed efficiency. This difference in performance responses appeared to be 'protein driven' as the combination increased (p<0.05) nitrogen retention in Experiment 2 but not in Experiment 3; whereas phytase plus xylanase significantly increased AME in both experiments. In Experiments 2 and 3 the combined inclusion levels of phytase and xylanase were lower that the individual additions, which demonstrates the benefits of simultaneously including phytase and xylanase in wheat-based poultry diets.