Oral and Poster Abstracts

pestiviruses. Concurrent infection with peste des petits ruminants virus
(PPRV) and pestivirus was diagnosed in stillborn twin lambs. With the
flock history, the findings of epidermal syncytial cells and necrotizing
bronchitis/bronchiolitis prompted testing for PPRV infection and PPRV
antigen was detected by immunohistochemistry (IHC) in the skin, lungs,
kidneys, rumen and thymus. Macroscopic anomalies that were typical of
border disease included scoliosis, brachygnathism, prognathism,
arthrogryposis, hydranencephaly, cerebellar hypoplasia and hairy fleece;
pestiviral antigen was detected by IHC in the brain, liver, lungs and
kidneys. Tissues from both lambs were positive by reverse transcriptasepolymerase
chain reaction (RT-PCR) for PPRV and pestivirus. To the
authors’ knowledge, PPR has not been reported previously as a congenital
infection or in combination with pestiviral infection.
Key words: Border disease, congenital infection; immunohistochemistry,
lambs, peste des petits ruminants, pestivirus, polymerase chain reaction
805 Researches Regarding the Industrial Mating Effect between
Texel Rams and the Principal Sheep Breeds from Romania
C. Pascal, M. Ivancia, I. Gilca
University of Agricultural Sciences and Veterinary Medicine, Faculty
of Animal Husbandry, Iasi, Romania
The researches have been made in 2007 year. The goal was obtaining
of half-breed lambs with very good aptitudes for meat production. For
this, there have been used male sires from the Texel breeds as paternal
line and local females (Merinos de Palas, Tsigaie and Turcana races) as
maternal line. The obtained lambs have been left together with mother
60 days when the weaning. Since than we have been made the
homogeneous lots and applied a fattening intensive technology for 85
days: for starting, 60 days for fattening and 15 days for finishing. At the
fattening period finish it was established that the half-breed lots have
made daily average increases and implicitly the superior corporal
weights with over 20% comparative with those witness, the constant
differences have been significant statistically talking for p>0,01. After
finalizing the fattening there were made control slaughter with these
objectives: determination of weight and structure carcasses, of the
sacrifice efficiency, of the rapport between basic tissues and muscular
fibers fineness and muscle surface.After the statistical analyzing of
slaughter efficiency dates, there was found different that were assured
statistically, significant between the Texel x Merinos de Palas (DA) and
Texel x Turcana (DB) lots (p>5%) and very significant between the
Texel x Merinos de Palas (DA) and Texel x Tsigaie (DC) lots (p>1%)
and in the other different cases were established insignificant for p 0.05) in the 5 th month, fall to 1.57
± 0.15 ng/mL (P > 0.05) in 2 nd month of lactation and peak again at
2,34 ± 0,25 ng/mL in the last month before the next pregnancy. Values
in BB were higher than in JSB (P > 0.05) in all periods of the year and
in all reproductive states.
Conclusions: Leptin values in studied ewes were in the range reported
for sheep. High values in summer and low in winter reflect
photoperiod-induced changes in food intake, body weight and
adiposity, confirmed also in other sheep breeds. Late summer was the
period of peak breeding activity, explaining high leptin values in
cycling ewes and confirming the role of leptin in reproductive activity.
February leptin peak can be explained by high leptin values in late
pregnancy, observed also in other sheep breeds. They can be attributed
to high energy intake necessary for the lactation and might originate in
placenta. Expulsion of placenta after parturition can cause the fall of
leptin which was observed after the February peak. Annual leptin
fluctuations are therefore a reflection of environmental conditions,
modified by reproductive events during the year.
Key words: ewe, reproduction, leptin
807 Some Physiological Responses of Sheep under Upper Egypt
Conditions
M. El-Fata, A. El-Barody
Minia University, Anim. Prod. Depart. Fac. of Agric., Minia, Egypt
Twenty weaned male lambs 2-3 months old with average body weight
17.75 ± 0.02 kg were used in the present experiment which lasted 180
days. Animals were randomly divided into five equal groups. The ration
of the first group (control) was not supplemented with S and I , while those
of groups 2-5 were supplemented to increase the dietary S and I level up
to 80 % or 100 % of the maximum tolerable level (MTL) as follows: G2
(S 80I 80 ), G3 (S 80I 100), G4 ( S 100I 80) and G5 (S 100I 100). The MTL of S was
0.4 % of feed dry matter, while the MTL of I was 50 PPM of the feed dry
matter. Blood samples were taken monthly for plasma total protein,
cholesterol and triiodothryonine hormone determinations. Rectal
temperature (RT, °C) and respiration rate (RR, r.p.m) were recorded at 1.0
p.m. during the mid three consecutive days each 30 days. At the end of the
experiment, two animals from each group were slaughtered. Thyroid
glands were taken for histological studies. Results revealed that
differences among animal supplemented groups were significant (P