Genetics of Reproduction in Sheep

1st Edition - November 21, 1984

Editors: R.B. Land, D.W. Robinson

eBook ISBN:

9 7 8 - 1 - 4 8 3 1 - 6 1 7 3 - 0

Genetics of Reproduction in Sheep is a compilation of papers that are concerned with the study and application of genetics to the reproduction in sheep. The book is divided into… Read more

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Genetics of Reproduction in Sheep is a compilation of papers that are concerned with the study and application of genetics to the reproduction in sheep. The book is divided into six parts, grouping the papers according to topic. The main topics include genetic variation and selection; the inheritance and the effects of the Booroola gene; genetic strategies for single genes; physiology of genetic variation; the physiological criteria of genetic merit; and the national requirement and systems of husbandry. The text is recommended for those involved with raising sheep and plan to apply genetics in their reproduction, as well as for geneticists who wish to conduct studies on how their field is applied to sheep reproduction.

I Genetic Variation and Selection

1 Selection for Litter Size

2 Crossbreeding for Fecundity

3 Evaluation and Utilization of Finn Sheep

4 The Performance of Romanov Crosses and Their Merits as a Basis for Selection

5 Genetic Studies of Reproduction in Norwegian Sheep

6 Crossbreeding for Fecundity in Subtropical Sheep

7 The Fecundity of the Chios Sheep

8 Prolific Breeds of Goat

9 Reproductive Physiology in South American Camelids

10 Genetic and Maternal Effects on Sheep Reproduction and Their Influence on Selection

11 Improvement of Reproductive Performances in Rasa Aragonesa. Present Results in Selection and Crossbreeding Experiments

12 The Preliminary Results of Selection for Prolificacy in Polish Merino Sheep

II The Inheritance and Effects of the Booroola Gene

13 The Single Gene Inheritance of the High Litter Size of the Booroola Merino

14 The Productivity of Bungaree, Booroola X Bungaree and Trangie Fertility X Bungaree Merino Ewes in South Australia

15 Introduction and Management of the Booroola Gene in Sheep Flocks in New Zealand

III Genetic Strategies for Single Genes

16 Utilization of Major Genes

17 Single Genes for Fecundity in Icelandic Sheep

18 Principles and Practice for the Use of the Booroola Merino in Extensive Husbandry

19 Linear Programming Model for Incorporating the Booroola Gene into Another Breed

IV Physiology of Genetic Variation

20 Breed Differences in Ovulation Rate and Uterine Efficiency and Their Contribution to Fecundity

21 Contribution of Variation in Ovulation Rate and Embryo Survival to within Breed Variation in Litter Size

22 The Mechanism of Action of Genes Controlling Reproduction

23 Reproductive Endocrinology of Prolific Sheep: Studies of the Booroola Merino

24 Ovulation Rate and Oestrus in Booroola Genotypes: Some Effects of Age, Season and Nutrition

25 Sexual and Ovarian Function of the D'man Ewe

26 Folliculogenesis in Sheep: Control of Ovulation Rate

27 Physiological Criteria for Embryo Mortality: Is Asynchrony Between Embryo and Ewe a Significant Factor?

28 Physiological Criteria in Genetic Selection for Aseasonality

29 Parameters of Male Fertility and Their Genetic Variation in Sheep

30 FSH Plasma Levels in Male and Female Lambs Issued from Lacaune Rams with High or Low Prolificacy Index

V Physiological Criteria of Genetic Merit

31 Detection and Genetic Assessment of Physiological Criteria of Merit Within Breeds

32 Testis Size and LH Response to LH-RH as Male Criteria of Female Reproductive Performance

33 Heritabilities of Testis Size and Sexual Behavior in Males and Their Genetic Correlations with Measures of Female Reproduction

VI Nutritional Requirements and Systems of Husbandry

34 Protein, Energy and Ovulation Rate

35 Nutritional Requirements of the Pregnant and Lactating Ewe

36 The Possibilities for Improving the Performance of Ewes Suckling Three or More Lambs in Grazing Systems

37 The Utilization of Romanov Sheep in a System of Integrated Husbandry

38 Productivity of Booroola Cross Merinos in Western Australia

39 Intensive Husbandry of Fecund Sheep

Index