scholarly journals Further Studies on the Value of Desmodium Meal in the Baby Chick Diet

1950 ◽  
Vol 29 (4) ◽  
pp. 586-589 ◽  
Author(s):  
R.L. Squibb ◽  
M.K. Wyld
Keyword(s):  
Chick Diet

scholarly journals Chick Diet Studies

1960 ◽  
Vol 39 (4) ◽  
pp. 1018-1023 ◽  
Author(s):  
F.D. Wharton ◽  
J.C. Fritz ◽  
L.J. Classen
Keyword(s):  
Chick Diet

scholarly journals Effects of gamma-irradiation on the vitamin content of diets for laboratory animals

1969 ◽  
Vol 3 (1) ◽  
pp. 39-49 ◽  
Author(s):  
Marie E. Coates ◽  
J. E. Ford ◽  
Margaret E. Gregory ◽  
S. Y. Thompson
Keyword(s):  
Folic Acid ◽  
Vitamin E ◽  
Vitamin A ◽  
Guinea Pig ◽  
Gamma Irradiation ◽  
Laboratory Animals ◽  
Vitamin Content ◽  
Before And After ◽  
Β Carotene ◽  
Chick Diet

Practical-type diets for chicks, guinea-pigs and cats, and a chick diet of purified ingredients, were assayed for their vitamin content before and after gamma-irradiation at doses ranging from 2 to 5 Mrad. Irradiation of guinea-pig and chick diets resulted in small losses of vitamin A (in this investigation, 6 and 12 per cent respectively). Losses of vitamin E were larger (24 and 65 per cent) but were much less (11 per cent) when the diets were vacuum-packed before irradiation. Vitamins were less stable in the purified chick diets, the most susceptible being vitamins A, E, B6 and thiamine. Vitamin destruction was greatly increased when antioxidants were incorporated into this diet, and also when its moisture content was high. Vitamin A and β-carotene were almost completely destroyed in the cat diet, where there was also some loss of thiamine and folic acid.

scholarly journals Intra-seasonal variation in zooplankton availability, chick diet and breeding performance of a high Arctic planktivorous seabird

Polar Biology ◽  
2016 ◽  
Vol 39 (9) ◽  
pp. 1547-1561 ◽  
Author(s):  
Dariusz Jakubas ◽  
Katarzyna Wojczulanis-Jakubas ◽  
Rafal Boehnke ◽  
Dorota Kidawa ◽  
Katarzyna Błachowiak-Samołyk ◽  
...  
Keyword(s):  
Seasonal Variation ◽  
High Arctic ◽  
Breeding Performance ◽  
Chick Diet

The effect of heat on the vitamin B6 of milk: II. A comparison of biological and microbiological tests of evaporated milk

1959 ◽  
Vol 26 (2) ◽  
pp. 215-220 ◽  
Author(s):  
Mary K. Davies ◽  
Margaret E. Gregory ◽  
Kathleen M. Henry
Keyword(s):  
Vitamin B6 ◽  
Experimental Error ◽  
Freeze Drying ◽  
Room Temperature ◽  
Raw Milk ◽  
Vitamin B ◽  
Experimental Conditions ◽  
Freeze Dried ◽  
Microbiological Research ◽  
Chick Diet

1. For chicks and rats pyridoxine, pyridoxal and pyridoxamine were equally active in terms of the free bases when given separately from the diet.2. Under our experimental conditions pyridoxine mixed with the chick diet was stable, but 20% of pyridoxamine, and a variable amount of pyridoxal was lost.3. The vitamin B6 activities measured with Saccharomyces carlsbergensis, chicks and rats respectively and expressed as μg. pyridoxine/g. freeze-dried milk were: raw milk 3·4, 3·2 and 4·9; evaporated milk 1·0, 2·1 and 2·7; stored evaporated milk 0·6, 1·4 and 2·0. For the chicks the milks were mixed with the diets; they were given separately to the rats.4. The microbiological and biological results for raw milk agreed within the limits of experimental error. For the processed milks the differences between biological and microbiological tests were statistically significant.5. All three methods of assay showed a 45–70% loss of vitamin B6 activity on processing and a further loss of 30% of the remainder after storage for 6 months at room temperature.We are indebted to Mr J. Rothwell, Department of Dairying, University of Reading, for preparing the evaporated milk and to Dr B. Record, Ministry of Supply, Microbiological Research Establishment, Porton, for freeze-drying the milk. We should like to thank Dr S. K. Kon for his interest in this work.

scholarly journals Amino Acid Supplementation of Hydrocarbon Yeast Chick Diet

1971 ◽  
Vol 8 (4) ◽  
pp. 217-223 ◽  
Author(s):  
Masahide TAJIMA ◽  
Koji TOTSUKA ◽  
Haruo KINOSHITA ◽  
Keigo SHOJI ◽  
Kazue ASO
Keyword(s):  
Amino Acid ◽  
Amino Acid Supplementation ◽  
Acid Supplementation ◽  
Chick Diet

Reconstructing Greater Sage-Grouse chick diets: Diet selection, body condition, and food availability at brood-rearing sites

The Condor ◽  
2019 ◽  
Vol 121 (1) ◽  
Author(s):  
Kurt T Smith ◽  
Aaron C Pratt ◽  
Jason R LeVan ◽  
Ashleigh M Rhea ◽  
Jeffrey L Beck
Keyword(s):  
Body Condition ◽  
Isotope Analysis ◽  
Field Measurements ◽  
Sage Grouse ◽  
Growth And Survival ◽  
Dietary History ◽  
Brood Rearing ◽  
Big Sagebrush ◽  
Chick Diet ◽  
Selection Of

ABSTRACT Growth and survival of juvenile birds is nutritionally demanding, making the availability of major foods critical to population productivity. Access to nutritious foods for juveniles has important implications because poor foraging conditions during development could result in mortality, or reduced fitness in adulthood. Selection of brood-rearing habitats by female Greater Sage-Grouse (Centrocercus urophasianus) thus has broad implications to survival of juveniles and persistence of populations. Previous research using crop contents demonstrated that invertebrates and forbs comprise the major portion of sage-grouse chick diets for the first few months post-hatch. We coupled stable isotope analysis of feathers and field measurements to quantify chick diet and then correlated that with measures of chick body condition. We sought to reconstruct sage-grouse chick dietary history (2013–2015) using nitrogen stable isotopes to (1) evaluate whether selection of brood-rearing habitats by female sage-grouse was related to chick diet, and (2) assess the relationship between dietary consumption and body condition. Brood-rearing females selected habitats in areas where diet resources occurred in proportion to their availability, with the exception that females selected areas with greater forb abundance 4 weeks after hatch. Diet assimilation by chicks at brood-rearing locations was unrelated to the availability of forbs and invertebrates, but consumption of forbs increased with chick age. Chicks that assimilated proportionally greater amounts of plant-derived nitrogen in their feathers during their first week of life tended to weigh more and have longer wing chords. This relationship was similar between male and female chicks. The importance of quality foods for sage-grouse is well recognized and conservation efforts should aim to maintain functioning sagebrush ecosystems containing adequate brood-rearing habitats for juvenile sage-grouse; there remains a need to identify whether desirable effects are achievable when attempting to improve big sagebrush (Artemisia tridentata) habitats to benefit sage-grouse populations.

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