This study was designed to investigate the effects of Sangrovit on performance, small intestinal morphology, and immune response of 300 commercial hybrid broilers, Ross 308. The study was conducted in the Agricultural Research Station of Islamic Azad University, Varamin, in the spring 2010 for 42 days. The broilers were kept in a completely randomized design with 3 treatments, 4 replicates, 12 ...

Continued pregnancies associated with forced breeding of intact female C3D2 F, mice increased the incidence and reduced the latent period of development of spontaneous mammary tumors. Conversely, intact virgin mice exhibited minimal sensitivity to tumor development after a lengthy latent period. Anterior and middle hypothalamic lesions significantly altered pituitary function to the extent that...

BACKGROUND The Loggerhead Shrike, Eastern subspecies (Lanius ludovicianus ssp.) (LOSH) is a predatory songbird native to Eastern North America. It is estimated that there are fewer than 55 breeding pairs of this subspecies in North America. Captive breeding plays a critical role in preventing the extirpation of this subspecies from its Canadian range. Unfortunately, high numbers of unexplained ...

Over the short-term and at physiological doses, acute increases in corticosterone (CORT) titres can enhance immune function. There are predictable seasonal patterns in both circulating CORT and immune function across many animal species, but whether CORT receptor density in immune tissues varies seasonally is currently unknown. Using radioligand binding assays, we examined changes in concentrat...

Studies focusing on the spatial ecology of Red Kite (Milvus milvus) during breeding season are scarce, despite this having major importance in its conservation. Spain has one largest populations species, but it is very threatened country. Here, 28 Kites were tagged with GPS satellite transmitters to study movements adults (March-June), evaluating differences according sex, and investigating hab...

Consider the two mammalian species shown in Fig. 1. The brown antechinus (Antechinus stuartii) has a fast life cycle and “big bang” reproduction, with males that mate for only a single breeding season in 1 y and then die a programmed death associated with lethal immune system collapse (1). The other mammalian species (Homo sapiens) has a long life during which males can mate during up to or bey...

The one-humped camel (Camelus dromedarius) is a seasonal breeder with a relatively short breeding period, when increased ovarian activity is exhibited (Shalash, 1965,1980; Nawito, Shalash, Hoppe ¿St Rakha, 1967 ; Novoa, 1970). In Israel, the normal breeding season occurs from December to early April. Female camels come into heat during this period and exhibit mainly follicular activity; there i...