Results 151 to 160 of about 787,178 (288)
RELATION OF DEPOT FAT TO EGG YOLK FAT IN LAYING HENS
, 1934 H.J. Almquist +2 more
openalex +1 more source
EFFECTS OF PROLONGED ORAL ADMINISTRATION OF LARGE DOSES OF PITUITARY ANTERIOR LOBE TO LAYING HENS [PDF]
, 1931 Marie S. Gutowska
openalex +1 more source
How should a hen run be structured so that it is used evenly by laying hens ? [PDF]
, 2004 The aim of this study was to obtain an even use of the hen run with structures as an uneven use leads to a nutrient and heavy metal overload on the frequently used areas. In particular, we looked at the preference of hens for a certain kind and amount of
Hirt, Helen, Zeltner, Esther
core
Histological Observations on the Anterior Lobe of the Pituitary Gland in Moulting and Laying Hens
, 1957 Marta Perek‐Polnik +2 more
openalex +1 more source
A Field Study of the Effect of Black Fly Bites on Egg Production of Laying Hens
, 1953 S. A. Edgar
openalex +1 more source
Survey of laying hen husbandry in Switzerland [PDF]
, 2017 In Switzerland eggs have not been produced in battery cages since January 1992. During the 10 year period from 1981 farmers replaced their battery cages with deep litter, aviary and grid-floor systems and modified cages.
FrÖhlich, E. +2 more
core