Oral and Poster Abstracts

1134 A Comparison between Two Calf Breeding Systems and its
Influence in Weight Gaining at Weaning
ML. Botello, JI. Torres, LP. Moles, D. Galvadon
Universidad Autonoma Metropolitana-Xochimilco, Producción
Agrícola y Animal, México D.F., Mexico
The goal of the research is to contrast two breeding systems as a well as
the nutritional value of two nutriments given to calves in order to
determine the weight gaining at weaning. The study was carried out in
two Holstein dairy farms with similar environments and managerial
strategies. The colostrum given during first three days colostrum from
one, two and three parturitions cows was given to the group (A) during
the first three days after birth. The calves were provided with
commercial food from this point until the 80 th day. Meanwhile group B
was fed colostrum from three parturition cows for two days and
commercial food up to the 90 th days. A bromatological analysis was
carried out to colostrum, whole milk, commercial food and dried
alfalfa. In order to determine the average of body weight gained 15
newborn and 15 weaned calves were measured. The colostrum’s
infrared spectroscopical analysis gave the following results: group A
had 12.03% proteins, 3.46% fat, 3.45% lactose and total solids 19.63%.
Whereas group B displayed 19.86% proteins, 3% fat, 3.22% lactose
and 27.48% total solids. The proximal analysis of the commercial food
and dried alfalfa showed for the group A 18.35 % crude protein (CP),
19.05% crude fat (CF), 0.13% crude fiber (CFi) and pellet milk’s
substitutes 28% CP, 10% CF and 1% CF, commercial food 18.97% CP,
0.10.86% CF, 3.64% CFi, 71.66% nitrogen free elements (NFE) and
5.69% ashes (A), dried alfalfa 24.5% CP, 0.0892% CF, 20.79% CFi,
43.06% NFE, 11.54% A. The group B milk substitute 20% CP, 21%
CF, 0.15% CFi, dried alfalfa 25.6% CP, 2.7% CF, 20.1% CFi, 36.1%
NFE, 11.9% A. The commercial food reports 25% CP, 3% CF, 3% CFi.
The weight gained in group A was 51.9 Kg and group B 62.250 Kg.
Group B complies better with the minimal nutritional requirements
than group A. The data suggest that a good quality milk substitute
works better than whole milk because satisfies the minimal
requirements at a lesser cost. The former secures quick ruminal
development al weaning. Getting to the adequate body weight requires
good management during lactation stage. It is always desirable to
supply high quality colostrum during the calf’s growing stage.
Key words: breeding systems, weight gaining, calves
1135 Anti Leptospiral Antibodies in Equines and Canines in an
Endemic Area of Bovine Leptospirosis
C. Mendez 1 , JI. Torres 1 , P. Melendez 1 , L. Benavides 2
1 Universidad Autonoma Metropolitana-Xochimilco, Producción
Agrícola y Animal, México DF, Mexico
2 Universidad Autonoma Metropolitana-Xochimilco, Sistemas
Biologicos, México D.F., Mexico
We pretended to identify specific antileptospiral antibodies in equine
and canine sera from an area of endemic bovine leptospirosis caused
mainly by serovars Hardjo and Tarassovi. We essayed 222 sera from
bovines: 70 in gestation, 83 non gestating and 69 calves; 24 equine sera
and 6 canine sera, all from Soto la Marina, Tamaulipas state in Mexico.
The antileptospiral titration of the sera was performed by the micro
agglutination (MAT) technique using thirteen serovars of Leptospira as
antigens: Double dilutions of the sera starting in 1:50 were done, the
titer was considered as the maximal dilution of sera in which 50% of
agglutination of the antigens was observed. The results with the bovine
sera were: 48 (68.57%) positives from the pregnant cows, to one or
more serovars, the more frequent ones: Hardjo strain H89, 40
(57.14%); Hardjo prajitno 36 (51.42%), Wolffi 34 (48.57%) and
Tarassovi 18 (25.71%). From the non gestating ones 52 (62.65%) were
positives to one or more serovars, principally to Hardjo H89 38
(45.78%) and Wolffi 18 (21.68%). The calves had 79.71% (55) of
seropositivity, being Hardjo prajitno y Hardjo H89 the highest (51 or
73.91%) and Wolffi 28 (40.58%). The horse sera reacted against one or
more serovars, 22 positives (91.6%) mainly against Tarassovi
11(54.83%), Hardjo prajitno 9 (37.5%), Bratislava 7 (29.16%) and
Canicola 7 (29.16%). The entire dog sera were positives to one or more
serovars especially to Canicola 6 (100%), Portland-Vere 6 (100%),
Icterohaemorrhagiae Palo Alto 6 (100%), Icterohaemorrhagiae 4
(66.6%) and Pyrogenes con 3 (50%). As in other parts of the Country,
we confirmed the incidence of bovine leptospirosis in Soto la Marina
specially the serovar Tarassovi and the related ones from the Serjöe
176 XXV. Jubilee World Buiatrics Congress 2008
Serogroup. Since the equine sera reacted mainly with serovar
Tarassovi, we need to establish the importance of this species as a
source of infection and transmission of this strain of Leptospira. This
type of studies are relevant because of the close contact that horses
have with bovines in this region and since it is not known the role that
this species play in the transmission of serovar Hardjo to the bovines.
Key words: antileptospiral, antibodies, equines, caninen and bovines
1136 Antileptospiral Antibodies in Bovine and Human
Populations Ina Dairy Farm in Tizayuca, Hidalgo Mexico
JI. Torres 1 , L. Benavides 2 , P. Melendez 1 , D. Galvadon 1 , ML. Botello 1
1 Universidad Autonoma Metropolitana-Xochimilco, Producción
Agrícola y Animal, Mexico, D.F., Mexico
2 Universidad Autonoma Metropolitana-Xochimilco, Sistemas
Biologicos, México D.F., Mexico
The objective of this work was to compare the serological profiles
against leptospira in the human and bovine populations from a dairy
farm near Mexico City. From an approximate population of 27,000
milk producer bovines from the dairy farm of Tizayuca (TDF) in the
Hidalgo state, Mexico; 240 bovine sera and 45 sera from farm workers
and veterinarians, with one to 20 years of work in the farm, were
sampled. The antileptospiral titration of the sera was performed by the
microagglutination (MAT) technique using twelve serovars of
Leptospira as antigens: Bratislava Jes-Bratislava, Canicola Hond
Utrecht IV, Portland-vere Sinaloa ACR, Grippotyphosa Moskva V,
Icterohaemorrhagiae RGA, Icterohaemorrhagiae Palo Alto, Pomona
Pomona, Pyrogenes Salinem, Hardjo Hardjobovis LT 1085, Hardjo
Hardjoprajitno H-89, Wolffi 3707 and Tarassovi Perepelitsin. The titer
was considered as the maximal dilution of sera in which 50% of
agglutination of the antigens was observed. From 240 bovines sera,
61%(147) reacted against on or more of the serovars used as antigens in
the MAT, the most frequent was Hardjo Hardjoprajitno H-89 (isolated
from TDF in 1989) with 42% (101); Hardjo with 27%(65); Wolffi con
21%(51) and Tarassovi con 16%(39). In the 45 human sera analyzed
we could not detect any reaction with the serovars used in the MAT.
From the reactivity observed in the bovine sera against the serovars
Hardjo and Wolffi from the serogroup Serjoe of Leptospira indicate
that these serovars are in active circulation in the bovine population of
the farm. The Hardjo serovar has been reported as the principal
responsible of abortions and mortinates, weak calves at the birth,
infertility and low milk production. In humans the main source of
infections are the rodents and occasionally other mammals as may be
the bovines. The fact that in this study the serological profiles of
antileptospiral antibodies of bovines and men in the TDF did not
coincide led us to think that L. Hardjo is well adapted to the bovine but
not to man, even when he is working in close contact with active
infected animals.
Key words: antileptospiral antibodies, bovine, human, Mexico
1137 Association of Bovine Viral Diarrhea Virus (BVDV) and
Bovine Herpesvirus-1 (BHV-1) in Abnormal Cervical
Mucous Discharge and Fertility in Cows and Heifers
S. Yavru 1 , M. Kale 2 , A. Ayhan 3 , O. Bulut 4 , MS. Gulay 5 ,
O. Yapkc 4 , F. Pehlivanoglu 6
1
University of Selcuk, Faculty of Veterinary Medicine, Virology,
Konya, Turkey
1
University of Mehmet Akif Ersoy, Faculty of Vet. Med., Virology,
Burdur, Turkey
3
University of Mehmet Akif Ersoy, Faculty of Vet. Med., Department
of Artificial Insemination, Burdur, Turkey
4
University of Selcuk, Faculty of Veterinary Medicine, Virology,
Konya, Turkey
5
University of Mehmet Akif Ersoy, Faculty of Vet. Med., Department
of Physiology, Burdur, Turkey
6
University of Mehmet Akif Ersoy, Faculty of Vet. Med., Department
of Veterinary Microbiology, Burdur, Turkey
The purpose of the present study was to describe whether Bovine Viral
Diarrhea Virus (BVDV) or Bovine Herpesvirus-1 (BHV-1) in
abnormal cervical mucous discharge (A-CMD) has effects on fertility
of cows and heifers. For this purpose, after visual examination of CMD
of the animals in estrus (n=222), animals having clear discharges (68
cows, 38 heifers) with normal viscosity and without bad odor were
grouped as normal cervical mucous discharge (N-CMD) group. The