The responses of growing pigs exposed to cold with varying amounts of straw bedding

2000 ◽  
Vol 80 (4) ◽  
pp. 539-546 ◽  
Author(s):  
S. M. Hayne ◽  
T. Tennessen ◽  
D. M. Anderson

Confinement housing of pigs allows optimal thermal conditions to be maintained thus reducing the thermal demand placed on the pig. Alternatives tend to cost less to construct, use less energy to operate and possibly have higher welfare standards than conventional housing; however, the thermal demand on the pig could be greater. An experiment consisting of two trials was conducted to examine the effect of varying amounts of straw bedding on the performance and behaviour of growing pigs while exposed to cold conditions. Four straw bedding treatments were studied and referred to as Least (20 kg), Medium-low (80 kg), Medium-high (137 kg) and Most (196 kg) straw usage. Results from the analysis of the two trials indicated that pigs with the three greatest amounts of straw gained more weight than pigs with the Least straw (P < 0.05). Pigs with the Least straw huddled with a sternal posture and piled more than pigs in the other three treatments (P < 0.05). Pigs with the two highest amounts of straw adopted a lateral posture while huddling more than pigs with the two lowest amounts of straw (P < 0.05). Pigs with the Most straw were also lying alone with a lateral posture more than pigs with the two lowest amounts of straw, and burrowed more than pigs in the other three treatments (P < 0.05). This study provides information on the adaptability of growing pigs exposed to different environmental conditions. Straw bedding was shown to be an important resource used by pigs to aid in thermoregulation in cold environments. Behavioural responses were also shown to be an effective means of adaptation. Key words: Straw bedding, cold conditions, thermoregulation, pigs, behaviour, performance

Author(s):  
S. Pozniak ◽  
V. Haskevich ◽  
M. Pshevlotsky ◽  
O. Teleguz

The article analyzes the agro-ecological situation and problems of soil use in Lviv region. It is established that the conduct of agriculture is often not the landscape and environmental conditions of the area and agro-ecological conditions of cultivation of agricultural crops. In soils have become widespread degradation processes, such as water and wind erosion, acidification, dehumidification, the depletion of elements of the other power plants. The measures of rational use and protection of soils are proposed. Key words: Lviv region, soil, agro-ecological state of, degradation, soil protection.


2018 ◽  
Vol 16 (2) ◽  
Author(s):  
Nadia Putri Ramadhani ◽  
Umi Rahayu ◽  
Imam Thohari

A healthy home is needed so that the function and usefulness of the house can be fulfilled properly, one of which is protecting its inhabitants from infectious diseases. Leptospirosis is one of the zoonotic infectious diseases caused by Leptospira interrogans, a spirochaeta class that can be transmitted from animals to humans. The purpose of this research is to find out how the condition of the house around the house of leptospirosis patients house in Babatan Village, Wiyung Subdistrict, Surabaya City, East Java Year 2018.The results showed that there were 76 (96%) houses whose condition in the house was eligible and the remaining 3 (4%) houses were not eligible. The other three variables, namely environmental conditions outside the home, the existence of rats, and the existence of pets show eligible results of 45 (57%) homes and non-qualified 34 (43%) homes; 54 (68%) houses met the requirements and those who did not meet the requirements of 25 (32%) houses; 75 (95%) houses met the requirements and those who did not meet the requirements of 4 (5%) houses. Key words: House Condition, Leptospirosis.


1970 ◽  
Vol 4 (1) ◽  
pp. 155-159
Author(s):  
Md Nasirul Islam ◽  
Abu Syeed Md Ripon Rouf ◽  
M Mazibar Rahman

Combined analysis of a group of repeated measurements experiments could play an important role in both the causes either the variance might be known or unknown. Ordinarily the variances vary from experiment to experiment depending on places and environmental conditions due to great irreconcilable inherent causes. On the other hand the variances are obviously related as a functional form of the respective error variances in different places. Relying on the functional form some tests criterion are proposed for removing any resulting bias. Key words: Repeated measurements experiments, divergency and convergency, percentage rotatability.


2005 ◽  
Vol 85 (2) ◽  
pp. 529-532 ◽  
Author(s):  
Nader Soltani ◽  
Christy Shropshire ◽  
Peter H Sikkema

Tolerance of Montcalm and Redhawk kidney beans to bentazon, imazamox plus fomesafen and imazamox plus bentazon applied postemergence at the maximum label rate in soybeans and twice that rate were studied at two Ontario locations (Exeter and Ridgetown) in 2001 and 2002. There were no differences between the two cultivars in their response to the herbicides tested. At Exeter in 2001, bentazon reduced plant height by 10 and 12% and yield by 33 and 22% at the label and twice that rate, respectively. Yield was also reduced by 11% at Exeter in 2002 at twice the label rate. Imazamox plus fomesafen reduced plant height equally by 14% and yield was reduced by 22 and 30% at the label rate and twice the label rate, respectively, at Exeter in 2001. Imazamox plus bentazon in Exeter in 2001 reduced plant height equally by 8% and yield by 20 and 14% at the label rate and twice the label rate, respectively. There were no negative effects on plant height, dry weight and yield at the other site-yrs. This research suggests that bentazon, imazamox plus fomesafen and imazamox plus bentazon applied postemergence can cause severe crop injury and yield reduction in kidney bean production under certain environmental conditions. Key words: Bentazon, crop tolerance, fomesafen; imazamox, Montcalm, Phaseolus vulgaris, Redhawk.


2018 ◽  
Vol 8 (4) ◽  
pp. 65-69
Author(s):  
Mao Nguyen Van ◽  
Dong Tran Nam

Background: Pigmented tumour of the skin is one of the common tumour in human including the benign pigmented tumours (more common) called Nevi tumours and the malignant one called melanoma which was less frequent but the most poor in prognosis. In addition, the others not belonging to these group had the same clinical appearance, so the application of histopathology and immunohistochemistry for the definitive diagnosis was indespensible. Objectives: 1. To describe the macroscopic features of the pigmented tumoral-like lesions; 2. To classify the histopathologic types of the pigmented cell tumours and the other pigmented tumours of the skin. Materials and Method: Cross-sectional research on 55 patients diagnosed as pigmented tumoral lesions by clinician, then all definitively diagnosed by histopathology combining the immunohistochemistry in difficult cases. Results: There was no difference in gender, the disease was discovered most common in adult, especially with the age over 51 years old (58.1%). the most region located was in the face accounting for 60%, following the trunk and limbs (14.6%, 12.8% respectively). All 3 malignant melanomas happened in foot. The most common color of the lesions was black (65.4%), the other ones were rose, grey and blue. Histopathology and immunohisthochemistry showed that the true pigmented cell tumours were 52.6% encompassing benign ones (Nevi tumour) (41.8%), melanoma (5.4%) and lentigo (5.4%). 47.4% was not the true pigmented cell tumour including pigmented basocellular carcinoma (36.4%) and the others less common as histiofibromas, acanthoma and papilloma. Conclusion: the pigmented tumoral-like lesions of the skin could be the true pigmented cell tumours and the others, so the application of the histopathology and the immunohistochemistry after the clinical discovery helps to determine and classify the disease definitely and for the best orientation of treatment as well. Key words: skin tumour, benign pigmented tumour (Nevi), malignant pigmented tumour (melanoma), pigmented basocellular carcinoma


1970 ◽  
Vol 34 (3) ◽  
pp. 425-434 ◽  
Author(s):  
PK Malaker ◽  
IH Mian

The efficacy of seed treatment and foliar spray with fungicides in controlling black point incidence of wheat seeds was evaluated in the field. Two seed treating fungicides, namely Vitavax-200 and Homai-80WP were used @ 0.25% of dry seed weight and foliar spray with Tilt-250EC (0.05%) was applied in six different schedules. Untreated and unsprayed controls were also maintained. Seed treatment with either Vitavax-200 or Homai-80WP significantly increased plant population and grain yield, but none of them was found effective in reducing black point incidence. On the other hand, foliar sprays with Tilt-250EC under all the spray schedules except spraying at 70 and 90 DAS significantly minimized the disease severity over unsprayed control. Among the different spray schedules, spraying at 30, 40, 50, 60, 70, 80, and 90 DAS appeared to be most effective, which was similar to spraying at 30, 45, 60, 75, and 90 DAS in reducing black point incidence and increasing grain yield. Economic analysis on yield advantage showed that the highest additional gross margin of Tk. 6120/ha with BCR 2.57 was obtained from five sprays applied at 30, 45, 60, 75, and 90 DAS. Key Words: Seed treatment, foliar spray, black point, wheat. DOI: 10.3329/bjar.v34i3.3968 Bangladesh J. Agril. Res. 34(3) : 425-434, September 2009


2002 ◽  
Vol 80 (6) ◽  
pp. 565-570 ◽  
Author(s):  
Szilvia Gedey ◽  
Arto Liljeblad ◽  
László Lázár ◽  
Ferenc Fülöp ◽  
Liisa T Kanerva

The Candida antarctica lipase B-catalyzed reactions of five β-amino esters with neat butyl butanoate and with 2,2,2-trifluoroethyl butanoate in diisopropyl ether were studied, as were the reactions of the same β-amino esters and their N-butanamides with neat butanol. The possibility for sequential resolution, where the amino and ester functions of the substrate both react with an achiral butanoate, became less likely with increasing size of the substrate from ethyl 3-aminobutanoate (1a) to pentanoate (1b) or larger. On the other hand, the alcoholyses of N-acylated β-amino esters successfully proceeded in butanol with E > 100. Gram-scale resolution of the N-butanoylated 1a was performed to demonstrate the usefulness of the method. Key words: lipase, interesterification, acylation, alcoholysis, resolution, β-amino esters.


2002 ◽  
Vol 15 (2) ◽  
pp. 205 ◽  
Author(s):  
Christina Flann ◽  
Pauline Y. Ladiges ◽  
Neville G. Walsh

A study of morphological variation in Leptorhynchos squamatus (Labill.) Less. across its range in south-eastern Australia was undertaken to test the hypothesis that L. squamatus includes two taxa. Phenetic pattern analyses of both field-collected and herbarium specimens on the basis of morphology confirmed two major groups. Bract, cypsela, pappus bristle and leaf characters were particularly important in separating the two groups. The taxa are separated by altitude differences with one being a low-altitude plant found in many habitats and the other being a high-altitude taxon that is a major component of alpine meadows. Lowland plants have dark bract tips, fewer and wider pappus bristles than alpine plants, papillae on the cypselas and more linear leaves. A somewhat intermediate population from the Major Mitchell Plateau in the Grampians shows some alpine and some lowland characters but is included in the lowland taxon. Seeds from five populations (two alpine, two lowland and Major Mitchell) were germinated and plants grown for 18 weeks under four controlled sets of environmental conditions. The experiment showed that leaf size and some other characters are affected by environmental conditions, but that there are underlying genetic differences between the lowland and alpine forms. Leptorhynchos squamatus subsp. alpinus Flann is described here to accommodate the highland taxon.


1989 ◽  
Vol 67 (10) ◽  
pp. 2904-2911 ◽  
Author(s):  
Alexander L. McIlraith ◽  
Gordon G. C. Robinson ◽  
Jennifer M. Shay

Field experiments and survey methods were used to assess competition and interaction between Lemna minor L. and Lemna trisulca L. at Delta Marsh, Manitoba. Sites were dominated by one or the other species or codominated by both. Replacement series experiments predicted codominance of L. minor and L. trisulca in an unshaded eutrophic site but predicted L. minor dominance when run for a longer time. Similar experiments conducted in a shaded eutrophic site predicted L. minor dominance. Addition series experiments showed that intraspecific and interspecific competition occurred in the unshaded site. In a eutrophic unshaded ditch, high densities of L. minor suppressed L. trisulca. In a eutrophic shaded site, high densities of L. minor and green algae inhibited L. trisulca, and in a sunny, less eutrophic site high density of each species inhibited the other. In a transplant experiment, L. minor biomass in shaded enclosures approached that found naturally in two shaded sites. Lemna trisulca persisted when shaded. Vegetative biomass trends in an unshaded eutrophic marsh ditch indicated spring and fall L. trisulca dominance and summer L. minor dominance. Shaded eutrophic sites were dominated by L. minor, whereas a less eutrophic site was dominated by L. trisulca. A model is developed to explain dominance patterns, and seasonal life-history responses are considered. Key words: Lemna, duckweed, competition, interaction, resources, light, nutrients.


Author(s):  
Ekta Sharma

The Presented summary paper target is to draw the attention of the public to the benefits of Environment and how we are connected to the Environment. To show that if there’s any change in the Environmental conditions, then how the conditions change in human beings lives. Living Being, whether a Human Being or Animals or plants,  are all directly or indirectly Dependent on the Environment for their Survival. When asked truly it can be said that none of the living being can survive without the presence of Environment. It is difficult to find absolutely natural environments, and it is common that the naturalness varies in a continuum, from ideally 100% natural in one extreme to 0% natural in the other. More precisely, we can consider the different aspects or components of an environment, and see that their degree of naturalness is not uniform.


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