scholarly journals The influence of genetics, animal age and nutrition on lamb production - an integrated research program

2007 ◽  
Vol 47 (10) ◽  
pp. 1117 ◽  
Author(s):  
D. W. Pethick ◽  
R. D. Warner ◽  
R. G. Banks
Keyword(s):  
Research Program ◽  
Genetic Selection ◽  
Australian Journal ◽  
Special Issue ◽  
Live Animal ◽  
Integrated Research ◽  
Nutritional Restriction ◽  
Selection For

This paper provides an introduction to this Special Issue of the Australian Journal of Experimental Agriculture. The special issue is dedicated to an integrated research program that was intended to increase the understanding of the effects of breed and genetic selection for live animal traits (growth, muscle and fatness) on carcass and meat attributes. Combined with this are the effects of animal age and nutritional restriction at critical weaning points. The reasons for, and general approach, of the research are outlined.

scholarly journals Preface: Genetic improvement of lamb—industry issues and the need for integrated research

2006 ◽  
Vol 57 (6) ◽  
pp. 591 ◽  
Author(s):  
D. W. Pethick ◽  
R. D. Warner ◽  
R. G. Banks
Keyword(s):  
Nutritional Status ◽  
Research Program ◽  
Genetic Improvement ◽  
Agricultural Research ◽  
Genetic Selection ◽  
Australian Journal ◽  
Special Edition ◽  
Live Animal ◽  
Integrated Research ◽  
Selection For

This paper provides an introduction to the special edition of the Australian Journal of Agricultural Research dedicated to an integrated research program to understand the effects of genetic selection for live animal traits (growth, muscle, and fatness) that determine carcass and meat attributes. Combined with this are the effects of nutritional status of the dam and growing lamb. The reasons for, and general approach of, the research is outlined.

scholarly journals Lamb and sheep meat eating quality — industry and scientific issues and the need for integrated research

2005 ◽  
Vol 45 (5) ◽  
pp. 465 ◽  
Author(s):  
B. C. Russell ◽  
G. McAlister ◽  
I. S. Ross ◽  
D. W. Pethick
Keyword(s):  
Research Program ◽  
Australian Journal ◽  
Eating Quality ◽  
Control Points ◽  
Special Edition ◽  
Meat Eating ◽  
Critical Control Points ◽  
Sheep Meat ◽  
Integrated Research

This paper provides an introduction to the special edition of the Australian Journal of Experimental Agriculture dedicated to an integrated research program aimed at understanding the critical control points which determine the consumer defined eating quality of Australian lamb and sheep meat. The reasons for a general approach in the research is outlined.

Genetic selection for nonstructural carbohydrates and its impact on other nutritive attributes of alfalfa ( Medicago sativa ) forage

2021 ◽  
Author(s):  
Annie Claessens ◽  
Marie Bipfubusa ◽  
Caroline Chouinard‐Michaud ◽  
Annick Bertrand ◽  
Gaëtan F. Tremblay ◽  
...  
Keyword(s):  
Medicago Sativa ◽  
Genetic Selection ◽  
Nonstructural Carbohydrates ◽  
Selection For

scholarly journals Influence of Genetic Selection for Growth and Broodstock Diet n-3 LC-PUFA Levels on Reproductive Performance of Gilthead Seabream, Sparus aurata

Animals ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 519
Author(s):  
Shajahan Ferosekhan ◽  
Serhat Turkmen ◽  
Cathaysa Pérez-García ◽  
Hanlin Xu ◽  
Ana Gómez ◽  
...  
Keyword(s):  
Reproductive Performance ◽  
Egg Quality ◽  
Sparus Aurata ◽  
Genetic Selection ◽  
Growth Trait ◽  
High Growth ◽  
Gilthead Seabream ◽  
Commercial Diet ◽  
Selection For ◽  
Broodstock Diet

Genetic selection in gilthead seabream (GSB), Sparus aurata, has been undertaken to improve the growth, feed efficiency, fillet quality, skeletal deformities and disease resistance, but no study is available to delineate the effect of genetic selection for growth trait on GSB reproductive performance under mass spawning condition. In this study, high growth (HG) or low growth (LG) GSB broodstock were selected to evaluate the sex steroid hormones, sperm, egg quality and reproductive performance under different feeding regime of commercial diet or experimental broodstock diet containing either fish oil (FO) or vegetable oil (VO) based diet. Under commercial diet feeding phase, broodstock selected for either high growth or low growth did not show any significant changes in the egg production per kg female whereas egg viability percentage was positively (p = 0.014) improved by the high growth trait broodstock group. The experimental diet feeding results revealed that both growth trait and dietary fatty acid composition influenced the reproductive performance of GSB broodstock. In the experimental diet feeding phase, we observed high growth trait GSB males produced a higher number of sperm cells (p < 0.001) and also showed a higher sperm motility (p = 0.048) percentage. The viable egg and larval production per spawn per kg female were significantly improved by the broodstock selected for high growth trait and fed with fish oil-based diet. This present study results signifies that gilthead seabream broodstock selected on growth trait could have positive role in improvement of sperm and egg quality to produce viable progeny.

Developmental morphology and anatomy of the reproductive structures in sunflower (Helianthus annuus): a unified temporal scale

Botany ◽  
2015 ◽  
Vol 93 (5) ◽  
pp. 307-316 ◽  
Author(s):  
L.I. Lindström ◽  
L.F. Hernández
Keyword(s):  
Disease Resistance ◽  
Helianthus Annuus ◽  
Oil Content ◽  
Genetic Selection ◽  
Reproductive Development ◽  
Developmental Morphology ◽  
Male And Female ◽  
Reproductive Structures ◽  
Selection For ◽  
Growing Conditions

In sunflower (Helianthus annuus L.), there has been an intense genetic selection for achenes with agronomic value, such as greater mass, oil content, and disease resistance. However, the information regarding the anatomical events that control their growth and maturation is surprisingly scarce. The aim of the present work was to study sunflower male and female sporogenesis and gametogenesis, as well as cell division and enlargement and tissue differentiation in the ovary and the embryo, linking the timing of these events to two frequently used phenological scales and a thermal time scale. In addition, we propose an ontogenetic scale that integrates the results of the present work to that of previous studies on sunflower reproductive development. The unified scales presented here provide a framework for others to investigate the relationships uncovered in this study in different genetic backgrounds and under different growing conditions.

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