Variation in sperm precedence was examined in the Colorado potato beetle, Leptinotarsa decemlineata Say, using neutral allozyme markers. Two temporal components were studied: (1) pairing duration and (2) time since initial pairing. We used two pairing protocols that differed in the timemales and femaleswere allowed tomate for Þrst and secondpairings.Whenpairingswere limited to 8 h each for the ...

this experiment was designed to evaluate the effects of different sources of calcium at different rates and cholecalciferol(vitamin d3) on the performance and egg quality of hy-line w-36 laying hens. in this study a total of 648 hens were managed in a completely randomized design using a factorial arrangement of 3 × 3 × 2 treatments, with three calcium sources (oyster shell, os; ground limeston...

Sunn Pest, Eurygaster spp. (Hemiptera: Scutelleridae), is the most important pest being able to cause significant losses on wheat yield and quality in Türkiye. To monitor overwintered adult population, this study was carried out 41 sites 19 locations during two consecutive years. The samplings were performed April May both During study, economic threshold, which 0.8 adults per square meter, obt...

T H E gradual deposition of a homogeneous, jelly-like covering on the rabbit ovum during its passage down the uterine tube was first observed by Cruikshank in 1797. This observation has been confirmed repeatedly by many later workers (Barry, 1839; Bischoff, 1842; Thomson, 1859; Assheton, 1894; Gregory, 1930; and Pincus, 1936). Barry referred to this covering investing the zona pellucida as 'cho...

the study was carried out in the purposively selected senapati and thoubal districts of hill and valley regions of manipur state of india. two blocks from each of the above selected districts were selected randomly and further from each block four villages were also selected randomly. 30 dairy farmers from each village were selected randomly and thus collected data from 240 respondents through ...

This study aims to analyze the Break-Even Point of Backyard laying hens business in Sidenreng Rappang Regency. research was conducted Bulo Village, backyard farm. from February April 2020. In this used a case study, results are not generalized. The total profit earned by these people's farm is IDR 137,717,244. For price 37,000 eggs, it will reach BEP at 1,617,723/ egg, 1,436,727,272 with egg 88...

We investigated the effects of dietary supplementation of zinc (ZnO; 0, 40, 80, 120 and 160 mg/kg) and Vit E (α-tocopheryl acetate; 0 and 40 IU/kg) on egg production, egg quality and Zn content of egg fractions and tissues in Japanese quails. Using a 5 × 2 factorial design, a total of 960 Japanese quails (Coturnix coturnix japonica) at day 70 of age were housed in cages and randomly assigned in...

Oviposition preference by European corn borers, Ostrinia nubilalis (Hübner), for or against transgenic corn would influence amounts of refuge required for resistance management. The objective of this research was to determine if various Bacillus thuringiensis (Bt) corn transgenic events influence O. nubilalis oviposition. All commercially available events (currently 5) were evaluated, plus 1 ex...

The role of Pasteuria penetrans in suppressing numbers of root-knot nematodes was investigated in a 7-year monocuhure of tobacco in a field naturally infested with a mixed population of Meloidogyne incognita race 1 and M. javanica. The suppressiveness of the soil was tested using four treatments: autoclaving (AC), microwaving (MW), air drying (DR), and untreated. The treated soil bioassays cons...