منابع مشابه
Breeding Problems with Angora Goats
OINCE its domestication the goat has served man well. As a source of milk, meat, mohair, and skins it has furnished him both food and clothing, and because of its brush-eating proclivities, has spared him untold amounts of hard labor with the brush hook. Since 1900 the Angora goat industry in the United States has undergone rapid expansion. At present it is confined largely to the Southwestern ...
متن کاملSome Applications of Mathematics to Breeding Problems.
INTRODUCTION .................................................................. 489 PART I. APPLICATIONS OF THE METHODS OF MATHEMATICAL INDUCTION AND REPE........................................................... 490 490 2. A special case of assortative mating.. ................................ 491 492 PART 11. GENERAL TERMS OF JENNINGS’S SERIES. 493 494 495 496 496 PART 111. BROTHER AND SISTE...
متن کاملSubfertility Problems Leading to Disposal of Breeding Bulls
Subfertility problems are encountered frequently in the cattle and buffalo bulls commercially maintained for semen production in dairy farms and under field conditions for natural insemination. Reports are scarce on the incidence of subfertility in breeding bulls, especially in India. The objective of the present study was to assess the incidence of the male reproductive anomalies leading to di...
متن کاملBreeding Programs to Reduce Foot and Leg Problems
The incidence of foot and leg problems and their direct and indirect consequences can be reduced by selection. The most promising approach is to select on an index that includes at least linear scores for foot angle or diagonal, rear legs rear view, and a locomotion score. Desirable are high foot angles, shorter diagonals, straighter rear legs from the rear with little to no closeness at the ho...
متن کاملCaptive breeding of pangolins: current status, problems and future prospects
Pangolins are unique placental mammals with eight species existing in the world, which have adapted to a highly specialized diet of ants and termites, and are of significance in the control of forest termite disaster. Besides their ecological value, pangolins are extremely important economic animals with the value as medicine and food. At present, illegal hunting and habitat destruction have dr...
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ژورنال
عنوان ژورنال: Journal of Heredity
سال: 1905
ISSN: 0022-1503,1465-7333
DOI: 10.1093/jhered/os-1.2.196