scholarly journals Behavior of domestic pigs under near-natural forest conditions with ad libitum supplementary feeding

2021 ◽  
Author(s):  
Rupert Stäbler ◽  
Dorian Patzkéwitsch ◽  
Sven Reese ◽  
Michael Erhard ◽  
Sandrina Hartmannsgruber
Keyword(s):  
Natural Forest ◽  
Supplementary Feeding ◽  
Domestic Pigs ◽  
Ad Libitum ◽  
Forest Conditions

scholarly journals Effects of chick separation and feeding on the performance of hens and chicks

1970 ◽  
Vol 26 (1) ◽  
pp. 13-16
Author(s):  
MJR Amin ◽  
MAR Howlider ◽  
MA Ali
Keyword(s):  
Body Weight ◽  
Supplementary Feeding ◽  
Treatment Groups ◽  
Ad Libitum

A study was conducted to observe the effect of separating chicks from broody hens after hatching, and supplementary feeding, on the performance of broody hens and chicks. Eighteen broody hens incubated 360 eggs of native hens. Broody hens and chicks were divided into three treatment groups; in T1, chicks were not separated, and chicks scavenged with mothers; in T2, chicks were separated at five days and fed ad libitum; and in T3, chicks were separated at 10 days and fed ad libitum. Hens in T2 and T3 received 50g feed/hen/day. The interval between end of incubation and first lay was shorter in T2 (36.3 days) and T3 (41.7) than in T1 (55.2). Clutch length was shortest in T1 (12.7 days), medium in T3 (15.0) and longest in T2 (17.0). There were more eggs/clutch in T2 (14.7) and T3 (14.3) than in T1 (11.5). There were no differences in broody hen's body weight between treatment groups. Mortality of chicks was highest in T2 (39.6%), medium in T3 (33.9), and lowest in T1 (21.0). Body weight of chicks was highest in T2, medium in T3 and lowest in T1, except at 1st week of age. It is suggested that separation of chicks and supplementary feeding was beneficial in terms of interval between end of incubation and first lay, clutch length, number of eggs per clutch and body weight of chicks. DOI: 10.3329/bvet.v26i1.4626 Bangl. vet. 2009. Vol. 26, No. 1, 13-16

Supplementary feeding of oat grain or lucerne hay to crossbred ewes at lambing

1987 ◽  
Vol 27 (2) ◽  
pp. 211 ◽  
Author(s):  
PJ Holst
Keyword(s):  
Body Condition ◽  
Body Condition Score ◽  
Poor Quality ◽  
Supplementary Feeding ◽  
The Poor ◽  
Feed Supplements ◽  
Condition Score ◽  
Ad Libitum ◽  
Lamb Survival ◽  
Grazing Behaviour

Border Leicester x Merino ewes (body condition score 2.6-3.0) grazing short pastures were given feed supplements during lambing, to examine effects on lamb survival. Supplementary feeding of poor quality lucerne hay, good quality lucerne hay or oaten grain, each given ad libitum, began 3 days prior to the start of the 4-week lambing period and continued to the end of lambing. One third of the ewes had twins. Lamb marking percentage for the unsupplemented treatment was 108.5% compared with 109.9, 118.1 and 111.7% for the poor quality lucerne hay, good quality lucerne hay and oaten grain treatments respectively. Of twin-bearing ewes given good quality hay, 60% reared both lambs, compared with 48-49% of those given poor quality hap or grain (n.s.) and 36% of those not supplemented (P < 0.05). Supplements did not improve the survival rate of single lambs. Overall survival (combining birth types) of lambs was also significantly improved by a supplement of good quality hay. The observed differences in twin survival were associated with differences in ewe grazing behaviour. These results support recommendations that supplementary feeding of twin-bearing ewes approaching lambing with a body condition score of 2.6-3.0 will improve lamb survival and weaning weights.

Effect of supplementation method on grazing behaviour of hill ewes

1999 ◽  
Vol 1999 ◽  
pp. 131-131
Author(s):  
A. Waterhouse ◽  
S.P. Marsh
Keyword(s):  
Sugar Beet ◽  
Sea Level ◽  
Social Behaviour ◽  
Foraging Behaviour ◽  
Supplementary Feeding ◽  
Acid Grassland ◽  
Ad Libitum ◽  
Fence Line ◽  
Important Form ◽  
Grazing Behaviour

Supplementary feeding of hill ewes during pregnancy is an important aspect of sheep management. Two broad groups of feed are given. Firstly, there is feed offered on a restricted basis, daily. Secondly, there are feeds offered on an ad libitum basis, of which feedblocks are the most important form for hill ewes. Some studies have shown interaction between feedblock intake and social behaviour but little is known about foraging behaviour.The study used three, 3 ha (50m x 600m) paddocks side by side, rising steeply from 280 to 490 metres above sea level on a semi-natural acid grassland hill pasture. Each plot was divided with markers on the fence line into 15 divisions of 40m wide, rising in altitude up the plot, each referred to as grids later. In Plot 1, 10 hill ewes were offered 150 g/head of pelleted molassed sugar beet feed at 10 am each day at grid 1 (i.e. at the bottom of the slope).

Factors of Importance to Some Lichen Species of Deciduous Broad-Leaved Woods in Southern Sweden

1992 ◽  
Vol 24 (3) ◽  
pp. 255-266 ◽  
Author(s):  
Lena Gustafsson ◽  
Anneli Fiskesjö ◽  
Torleif Ingelög ◽  
Börje Petterssonj ◽  
Göran Thor
Keyword(s):  
Natural Forest ◽  
Lichen Species ◽  
Site Quality ◽  
Forest Plantations ◽  
Southern Sweden ◽  
Lobaria Pulmonaria ◽  
Successional Stages ◽  
Old Trees ◽  
Forest Conditions ◽  
Habitat Variables

AbstractA number of lichen species presumed to prefer broad-leaved, deciduous woodlands of long continuity were recorded in 101 stands with different histories and in different successional stages in southern Sweden. Of 19 recorded species, Arthonia vinosa, Calicium adspersum, C. salicinum, Lobaria pulmonaria, and Mycobilimbia sabuletorum occurred in ten stands or more. Habitat variables that indicate occurrence of natural forest conditions were registered and also factors of stand and site quality used in forest surveys. The lichen species recorded were significantly correlated with the presence of large, old, deciduous, broad-leaved trees. Deciduous, broadleaved woods with many large old trees are at present being rapidly transformed into forest plantations. The recorded lichen species will decrease unless the woods are protected or have modified management.

Public Understandings of Nature: A Case Study of Local Knowledge About "Natural" Forest Conditions

2001 ◽  
Vol 14 (4) ◽  
pp. 325-340 ◽  
Author(s):  
R. Bruce Hull ◽  
David P. Robertson ◽  
Angelina Kendra
Keyword(s):  
Local Knowledge ◽  
Natural Forest ◽  
Forest Conditions

Light and electron microscopic investigation of adenohypophyses of germfree, food-restricted, and germfree-food restricted aging, male lobund-wistar rats

1988 ◽  
Vol 46 ◽  
pp. 352-353
Author(s):  
G. Ilse ◽  
K. Kovacs ◽  
N. Ryan ◽  
T. Sano ◽  
L. Stefaneanu ◽  
...  
Keyword(s):  
Wistar Rats ◽  
Microscopic Investigation ◽  
Electron Microscopic Investigation ◽  
Aging Male ◽  
Sprague Dawley ◽  
Electron Microscopic ◽  
Sprague Dawley Rats ◽  
Old Rats ◽  
Ad Libitum ◽  
Microscopic Findings

Germfree state and food restriction have been shown to increase life span and delay tumor occurrence in rats. We report here the histologic, immunocytochemical and electron microscopic findings of adenohypophyses of aging, male Lobund-Wistar rats raised at Lobund Laboratories. In our previous study, the morphologic changes in the adenohypophyses of old rats have been extensively investigated by histology, immunocytochemistry and electron microscopy. Lactotroph adenomas were frequent in Long-Evans and Sprague-Dawley rats, whereas gonadotroph adenomas were frequent in Sprague-Dawley and Wistar rats.Male Lobund-Wistar rats were divided into four groups: 1) conventional, which were raised under normal non-germfree environment and received food ad libitum; 2) germfree-food ad libitum; 3) conventional environment-food restricted and 4) germfree-food restricted. The adenohypophyses were removed from 6-month-, 18-month- and 30-month-old rats. For light microscopy, adenohypophyses were fixed in formalin and embedded in paraffin.

Alteration of Mitochondria in Oxythiamine-Induced, Acute Thiamine Deficiency in the Mouse

1976 ◽  
Vol 34 ◽  
pp. 284-285
Author(s):  
Itaru Watanabe ◽  
Dante G. Scarpelli
Keyword(s):  
Electron Microscopy ◽  
Adult Male ◽  
Thiamine Deficiency ◽  
Light And Electron Microscopy ◽  
Fatty Change ◽  
Deficient Diet ◽  
Subcutaneous Injections ◽  
Swiss Mice ◽  
Time Period ◽  
Ad Libitum

Acute thiamine deficiency was produced in mice by the administration of oxythiamine, a thiamine analogue, superimposed upon a thiamine deficient diet. Adult male Swiss mice (30 gm. B.W.) were fed with a thiamine deficient diet ad libitumand were injected with oxythiamine (170 mg/Kg B.W.) subcutaneously on days 4 and 10. On day 11, severe lassitude and anorexia developed, followed by death within 48 hours. The animals treated daily with subcutaneous injections of thiamine (300 μg/Kg B.W.) from day 11 through 15 were kept alive. Similarly, feeding with a diet containing thiamine (600 μg/Kg B.W./day) from day 9 through 17 reversed the condition. During this time period, no fatal illness occurred in the controls which were pair-fed with a thiamine deficient diet.The oxythiamine-treated mice showed a significant enlargement of the liver, which weighed approximately 1.5 times as much as that of the pair-fed controls. By light and electron microscopy, the hepatocytes were markedly swollen due to severe fatty change and swelling of the mitochondria.

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