Trichogramma spp. are parasitoids used in the regulation of insect populations that can cause economic damage. In order to ensure good performance, understanding some of their biological characteristics is essential. The objective of this study is to evaluate whether mating interferes with the biological characteristics of a population of Trichogramma pretiosum collected in the field. In all ex...

In general, polyclads are hermaphroditic having male and female reproductory organs. They copulate to engage in mutual cross-fertilization. Once, two adult worms of the same species meet a quite crude copulation act, which can be described as hypodermic insemination, is performed (upper images, Pseudoceros bifurcus). During copulation worms were observed to move towards each other, touch, then ...

One of the potencies Madura cow genetics is its adaptation ability to tropical climate. Yet in most cases, reproduction efficiency cows has not reached optimum point. This research examines use double-dose artificial insemination compared a single-dose on cows. The study was conducted Daramista, Lenteng District, Sumenep Regency, Madura, East Java. utilized an experimental field method with pur...

Since their reproduction is seasonal, goat lambs can not mate before the breeding season begins, even if they have reached maturity. This situation leads to economic losses for farmers. Estrus synchronization with progesterone and PMSG combination widely practiced produce off-season heat. However, different applications are made regarding dose timing of PMSG. In study, effects (500 IU) administ...

The present study was conducted to evaluate the effect of fish oil supplementation prior to mating on secondary sex ratio of pups (the proportion of males at birth) in bitches. Sixty five bitches (German Shepherd, n = 35; Husky, n = 30) were enrolled in the study. Bitches (140-150 days post-estrus) were given 2% per dry matter intake palm oil and fish oil in the control (n = 33) and treatment (...

The oviduct occupies a unique position in mammalian reproduction as the site of sperm transport, the final maturation of sperm and egg, fertilization, and the initial development of the embryo. This dissertation examines the factors that control the number, distribution and physiological state of spermatozoa in the oviduct. The golden hamster (Mesocricetus auratus) was used as the animal model....

Introduction Domestication of food producing animals has led to the desire by humans to control reproduction so as to enhance production of the products (e.g., meat) from these animals. Domestication of cattle is estimated to have started about 10,000 years ago (Bradley et al., 1998). Controlled reproduction by regulating mating patterns, through use of natural breeding, has long been practiced...

Smooth-coated otters (Lutrogale perspicillata) inhabit waterways of India and Singapore. typically live in family groups, or “romps,” consisting a single mating pair with adult-sized, nonbreeding offspring. We note here the presence multiple reproductive female within some romps, as well possible existence simultaneous litters by different mothers. This finding has not been reported among L. pe...