the study was conducted to know the effect of flushed feeding on estrus synchronization and conception rate of holstein ílocal crossbred cow’s after using the gnrh (fertagyl) and pgf2α hormone. as a representative sample 20 holstein ílocal crossbred cows were chosen from chittagong cantonment military dairy farm in bangladesh and the experimental work was carried out for 60 days. ten cows were ...

The once bred ewe slaughter method proposes the use of female lamb to produce a lamb and then both are slaughtered, increasing income and high quality meat production. Thus, this study evaluated the growth and reproduction performance of ewe lamb from Santa Inês (SI), a naturalized genetic resource, and their crosses (Dorper x Santa Inês (DOR), Texel x Santa Inês (TEX), Ile de France x Santa In...

Embryos were transferred from crossbred donor gilts to eight Duroc, nine Yorkshire and eight crossbred recipient gilts to determine differences in uterine capacity among genetic groups. Donor gilts were injected IM with 750 IU of PMSG on Day 16 (onset of estrus = Day 0). Donors and recipients were mated 12 and 24 hr after onset of estrus. Embryos were recovered on Day 4 and were deposited into ...

Reproductive performance and body weights of four and five-year old crossbred ewes representing five combinations of Finnsheep (F), Dorset (D) and Rambouillet (R) breeding were evaluated when lambing in the summer Oune-July, 1976). The five breed combinations represented were 1f2D, 1f2R; %D, %R; %F, 1f2D, %R; %F, %D, 1f2Rand %F, 3f4R. Breeding effectiveness of purebred and crossbred rams of Ham...

OBJECTIVE To compare quantitative measures and clinical assessments of behavior as an indication of psychologic well-being of stabled horses provided drinking water continuously or via 1 of 3 intermittent delivery systems. ANIMALS 22 Quarter Horse (QH) or QH-crossbred mares and 17 Belgian or Belgian-crossbred mares (study 1) and 24 QH or QH-crossbred mares and 18 Belgian or Belgian-crossbred ...

Indigenous Tswana chickens are better adapted to prevailing environmental conditions and diseases than their exotic counterparts. They however exhibit slower growth rate and less mature final weight than their exotic counterparts. Crossbreeding of indigenous Tswana chickens with exotic chicken breeds can therefore be used as an alternative strategy to improve growth performance of indigenous Ts...

reproductive performance was evaluated in non-lactating crossbred ewes to which were administered the exogenous gnrh and pmsg. the ewes were randomly allocated in three treatment groups (n=40).after accurate detection of estrus and 2 hours prior to mating, 2.5 ml of distilled water and 2.5 ml of gnrh were injected intramuscular to each ewe of the first (control) and second group, respectively. ...

the main purpose of this study was to evaluate the influence of the photoperiod on the seminal traits of crossbreed wool-producing rams throughout on year period. for the effect of photoperiod two periods were considered: decreasing daylight length (summer and autumn) and increasing daylight length (winter and spring). for the study 5 baluchi × moghani (bl×mg) and 5 arkharmerino × moghani (am×m...

Performance records for 223 boars and gilts in Duroc and Yorkshire selected and control lines and for 231 boar and gilt progeny from reciprocal breed crosses were analyzed to evaluate (1) maternal effects, (2) effects of mass selection in purebreds on performance of crossbred progeny and (3) heterosis effects. Selection of purebred herd replacements was based mainly on an index (Index) of avera...

Sub-fertility is one of the most common problems observed in crossbred males, but the etiology remains unknown in most of the cases. Although proteomic differences in the spermatozoa and seminal plasma between breeds have been investigated, the possible differences at the sperm precursor cells and supporting/nourishing cells have not been studied. The present study reports the differential prot...