scholarly journals Effect of Diet Composition on Chick Growth Response to Different Types and Levels of Feed Medication ,

1973 ◽  
Vol 52 (6) ◽  
pp. 2237-2243 ◽  
Author(s):  
Raul Fernandez ◽  
Ernest Lucas ◽  
James McGinnis
Keyword(s):  
Diet Composition ◽  
Growth Response ◽  
Chick Growth ◽  
Different Types

scholarly journals Chick Growth Response to Different Levels of Methionine and Protein Supplements Added to a Low Methionine Diet

1952 ◽  
Vol 31 (4) ◽  
pp. 700-707 ◽  
Author(s):  
D.W. Bolin ◽  
Earle W. Klosterman ◽  
Kermit Schlamb ◽  
Reece L. Bryant
Keyword(s):  
Growth Response ◽  
Chick Growth ◽  
Protein Supplements ◽  
Different Levels

The influence of diet composition and an anti-microbial growth promoter on the growth response of weaned piglets to spray dried animal plasma

2004 ◽  
Vol 86 (1-3) ◽  
pp. 201-208 ◽  
Author(s):  
P. Bikker ◽  
A.J. van Dijk ◽  
A. Dirkzwager ◽  
J. Fledderus ◽  
M. Ubbink-Blanksma ◽  
...  
Keyword(s):  
Diet Composition ◽  
Growth Response ◽  
Microbial Growth ◽  
Growth Promoter ◽  
Weaned Piglets ◽  
Spray Dried

scholarly journals Breeding Stage and Environmental Factors Affect Prey Selection by Greater Crested Terns Off Southeast Australia

2021 ◽  
Author(s):  
Katrin Quiring ◽  
Gemma Carroll ◽  
Eckhard Heymann ◽  
Curtis Champion ◽  
Robert Harcourt
Keyword(s):  
Environmental Factors ◽  
Diet Composition ◽  
Foraging Behaviour ◽  
Prey Selection ◽  
Sea Surface ◽  
Chick Growth ◽  
Breeding Stage ◽  
Marine Predators ◽  
Selective Foraging ◽  
Family Level

Abstract Variation in the diet of marine predators such as seabirds can be used to track environmentally-driven changes in ocean ecosystems. However, studies of predator diet must account for intrinsic influences on prey selection, such as changing nutritional requirements during breeding. Using digital photography, we investigated how the type and size of prey brought back to the colony by greater crested terns (Thalasseus bergii) changed in relation to breeding stage, and to variation in oceanographic conditions around Montague Island, Australia (36°15’S, 150°13’E). 2469 prey items were identified to species or family level over 35 consecutive days of photo-sampling in 2018. Australian anchovy (Engraulis australis), a surface-schooling clupeid fish, was the most abundant prey returned to the colony during all breeding stages (84.5%). The proportion of anchovy increased from 77.0% when birds were provisioning their adult partners during incubation, to 92.4% when they were provisioning chicks, suggesting selective foraging behaviour on this energy-dense species as a means to facilitate rapid chick growth. Anchovy size was largest during incubation (91.1 ± 14.9 mm), smallest during early chick provisioning (71.8 ± 11.0 mm), and increased slightly during mid-provisioning (79.6 ± 11.9 mm), indicating adaptive prey selection that is matched to the physical requirements of different breeding stages. The proportion of anchovy prey was also influenced by extrinsic environmental factors, with anchovy becoming more dominant with increasing local sea surface temperatures, up to ~17.5°C. Our findings highlight the importance of examining both intrinsic and extrinsic determinants of diet composition across breeding stages in seabird populations.

Genotypic and environmental differences in rye fed to broiler chicks with dietary pentosanase supplementation

1991 ◽  
Vol 71 (4) ◽  
pp. 1233-1239 ◽  
Author(s):  
G. L. Campbell ◽  
D. A. Teitge ◽  
H. L. Classen
Keyword(s):  
Key Words ◽  
Growth Response ◽  
Nutritive Value ◽  
Soluble Carbohydrates ◽  
Broiler Chicks ◽  
Chick Growth ◽  
Production Location ◽  
Unknown Sample ◽  
Single Variety

The response of broiler chicks fed rye with dietary pentosanase supplementation was examined with respect to rye variety, area of production, and maturity at harvest. There were significant differences among varieties in the absence of enzyme addition and significant differences (variety × enzyme, P < 0.01) in the magnitude of the chick growth response to dietary pentosanase (exp. 1). Kodiak and Cougar rye gave greater enzyme-induced growth response than did Gazelle rye, with Musketeer rye and an unknown sample displaying intermediate values. Experiment 2 gave similar results; both Kodiak and Cougar rye in chick diets gave a larger response to dietary pentosanase than did Musketeer rye (P > 0.05). Determination of soluble carbohydrates, as well as extract viscosity, indicated that Kodiak rye had higher extract viscosity, higher extractable pentosan content, and a lower arabinose-to-xylose ratio; however, these results were not consistent with Cougar rye. Differing production location of a single variety (Musketeer, exp. 3) or maturity at harvest (exp. 4) indicated no significant effect on the nutritive value of rye attributable to location or maturity with or without enzyme supplementation, nor was there an effect on the magnitude of enzyme response. In rye harvested at different stages of maturity there was, however, a nonsignificant linear depression in chick growth with rye harvested at higher moisture levels. Key words: Rye, pentosans, broiler chicks, pentosanase

scholarly journals Influence of Fiber Content of Diet on Chick Growth Response to Enzyme Supplements ,

1961 ◽  
Vol 40 (3) ◽  
pp. 615-619 ◽  
Author(s):  
Kam C. Leong ◽  
Leo S. Jensen ◽  
James McGinnis
Keyword(s):  
Growth Response ◽  
Fiber Content ◽  
Chick Growth
Sign in / Sign up

Export Citation Format

Share Document