252 (Dec) pp 475-629
251 (Sep) pp 289-473
250 (Jun) pp 107-288
249 (Mar) pp 1-106
Revisiones (Dec)
248 (Dec) pp 311-455
247 (Sep) pp 199-310
246 (Jun) pp 93-198
245 (Mar) pp 1-92
Revisiones (Dec)
244 (Dec) pp 563-700
243 (Sep) pp 397-562
242 (Jun)
241 (Mar)
Revisiones-Reviews
240 (Dec) pp 477-636
239 (Sep) pp 319-476
238 (Jun) pp 159-318
237 (Mar) pp 1-158
Revisiones
236 (Dec)
235 (Sep)
234 (Jun) pp 161-320
233 (Mar)
Revisiones-Reviews
232 (Dec) pp 839-1354
231 (Sep) pp 319-836
230 (Jun) pp 161-318
229 (Mar) pp 1-160
Revisiones-Reviews
228 (Dec) pp 477-636
227 (Sep) pp 319-476
226 (Jun) pp 159-318
225 (Mar) pp 1-158
Revisiones (Mar)
224 (Dec) pp 635-792
223 (Sep) pp 321-478
Suplemento 1 (Dec) pp 479-632
222 (Jun) pp 161-320
221 (Mar) pp 1-160
Revisiones-Reviews
220 (Dec) pp 389-578
219 (Sep) pp 291-388
218 (Jun) pp 99-290
217 (Mar) pp 3-98
Revisiones-Reviews
Suplemento 1 (Dec) pp 377-794
216 (Dec) pp 805-1006
215 (Sep) pp 275-366
214 (Jun) pp 101-272
213 (Mar) pp 1-100
Revisiones-Reviews
212 (Dec) pp 325-424
211 (Sep) pp 225-236
210 (Jun) pp 125-224
209 (Mar) pp 1-124
Revisiones-Reviews
208 (Dec) pp 585-708
206 (Sep) pp 123-574
205 (Mar) pp 1-121
204 (Dec) pp 357-474
203 (Sep) pp 237-356
202 (Jun) pp 117-236
201 (Mar) pp 1-116
200 (Dec) pp 417-494
199 (Sep) pp 291-416
198 (Jun) pp 125-289
197 (Mar) pp 1-124
196 (Dec) pp 411-484
195 (Sep) pp 291-410
193 (Jun) pp 1-290
192 (Dec) pp 435-628
191 (Sep) pp 311-434
189 (Jun) pp 1-310
188 (Dec) pp 434-512
187 (Sep) pp 311-433
185-186 (Jun) pp 1-308
184 (Dec) pp 371-448
183 (Sep) pp 249-370
182 (Jun) pp 123-248
181 (Mar) pp 1-122
180 (Dec) pp 597-679
178-179 (Sep) pp 129-596
177 (Mar) pp 1-128
176 (Dec) pp 293-424
175 (Sep) pp 197-292
174 (Jun) pp 105-196
173 (Mar) pp 1-102
172 (Dec) pp 377-488
170-171 (Sep) pp 97-376
169 (Dec) pp 3-95
168 (Dec) pp 369-470
166-167 (Sep) pp 97-368
165 (Mar) pp 1-96
164 (Dec) pp 305-403
163 (Sep) pp 201-302
162 (Jun) pp 105-195
161 (Mar) pp 3-102
160 (Dec) pp 401-508
159 (Dec) pp 301-396
158 (Sep) pp 203-300
157 (Jun) pp 105-200
156 (Mar) pp 3-100
155 (Dec) pp 605-710
154 (Sep) pp 303-603
153 (Sep) pp 195-302
152 (Jun) pp 101-194
151 (Mar) pp 1-100
149 (Dec) pp 315-412
148 (Sep) pp 207-314
147 (Jun) pp 101-209
146 (Mar) pp 1-100
145 (Sep) pp 219-330
144 (Jun) pp 107-218
143 (Mar) pp 1-106
142 (Sep) pp 209-332
141 (Jun) pp 105-210
140 (Mar) pp 1-106
139 (Sep) pp 203-326
138 (Jun) pp 103-204
137 (Mar) pp 1-106
136 (Sep) pp 203-370
135 (Jun) pp 107-204
134 (Mar) pp 1-108
133 (Sep) pp 209-332
132 (Jun) pp 103-209
131 (Mar) pp 1-102
130 (Sep) pp 209-333
129 (Jun) pp 107-208
128 (Mar) pp 1-106
127 (Sep) pp 203-331
126 (Jun) pp 109-201
125 (Mar) pp 1-106
124 (Sep) pp 205-329
123 (Jun) pp 109-202
122 (Mar) pp 1-108
121 (Sep) pp 217-330
120 (Jun) pp 113-216
119 (Mar) pp 1-108
118 (Sep) pp 215-330
117 (Jun) pp 107-211
116 (Mar) pp 1-105
115 (Sep) pp 213-330
114 (Jun) pp 105-212
113 (Mar) pp 1-104
112 (Dec) pp 299-400
111 (Sep) pp 199-298
110 (Jun) pp 103-197
109 (Mar) pp 1-101
108 (Dec) pp 301-399
107 (Sep) pp 205-299
106 (Jun) pp 103-204
105 (Mar) pp 1-102
104 (Dec) pp 309-407
103 (Sep) pp 119-308
102 (Jun) pp 113-217
101 (Mar) pp 1-110
100 (Dec) pp 307-403
99 (Sep) pp 201-306
98 (Jun) pp 109-200
97 (Mar) pp 1-108
95-96 (Sep) pp 209-301
94 (Jun) pp 109-207
93 (Mar) pp 1-108
41 (Mar) pp 1-100
Arch. Zootec. 25:  3-23. 1976.    Download 1626
 
DIAGNOSTICO DE LA GESTACION EN LA OVEJA SEGUN SU REACCION ETOLOGICA A LOS ESTROGENOS Y CAPACIDAD ABORTIVA DEL D. D. E. Y DEL B. E.
PREGNANCY DIAGNOSIS IN EWES USINE ETOLOGICAL REACTION TO ESTROGENS AND ABORTIVE ACTIVITY OF DIOXI-DIETIL-STILBOESTROL AND ESTRADIOL BENZOATE.

A. VERA Y VEGA, J. JUAREZ y P. GALAN

* Catedrático y profesores ayudantes. Cátedra de etnología y producciones pecuarias. Facultad de veterinaria. Instituto de zootecnia (C. S. I. C.) Universidad de Córdoba.

Palabras clave adicionales
Diagnótico de gestación. Ovejas. Estrógenos. Aborto. DDE. BE
 
Additional keywords
Pregnancy Giagnosis. Ewes. Abortive activity. DDE. BE
 
Resumen
Tres grupos de ovejas adultas previamente expuestas a moruecos fértiles fueron inyectadas subcutáneamente con soluciones oleosas de D. D. E. (0,5, 1,0 y 1,5 mg por cabeza) en febrero y septiembre 1972 y con solución oleosa de B. E. (0,015, 0,030 y 0,060 mg por cabeza) en enero, febrero 1973. Al efectuar los ensayos, las gestaciones de los tres grupos habían avanzado hasta periodos medios de 61,1, 92,6 y 99,0 días, respectivamente. Los celos fueron detectados utilizando moruecos provistos de mandiles durante tres días tras los tratamientos. Solamente se observaron 6 abortos de un total de 133 ovejas inyectadas vs. una en uno de los grupos de control. De un total de 45 ovejas no gestantes en el 1.° y 2.° grupos, los celos registrados fueron 52,2, 35,7 y 43,7 p. 100 vs. 33,0 p. 100 en 9 ovejas del grupo testigo. De un total de 53 ovejas no gestantes del 3.° grupo (B. E.) los porcentajes fueron 40,0, 60,0 y 40,0 p. 100 vs. 18,2 p. 100 en un grupo control de 18 ovejas. El D. D. E. no promovió manifestaciones de celo en 13 primalas vacías.
 
Summary
Ewes of three breed groups (rasas, 41 kg; gallegas, 21 kg; cross bred fleischschaf x Rasa, 52 kg average live weight), previously exposed to fertile rams were used in three experiments designed to test the possibility of detecting pregnancy in sheep injected with estrogens and joined thereafter with raddled sexual active rams, whose reactions were recorded for three consecutive days after treatments, twice a day, for half an hour each day. Later parturition or abortion were the criteria considered for testing the efficiency of the proposed method. Experiments 1 and 2 were performed In february and september, 1972, respectively, on ewes previously exposed to fertile rams for 40 days. The animals were divided into 4 groups; three of them were dosed subcutane ously with 0.5, 1.0 and 1.5 mg/head of oil solution of dioxi-dietil-stilboestrol (D. D. E.), remaining a fourth group as con¬trol. At estrogens treatment time condition of ewes as far as pregnancy concerns was unknown. In both experiments heats were not detected at all by the raddle drams in 56 pregnant ewes, but 5 of these aborted in groups 2 and 3, one abortion being recorded among the 15 ewes in control group. From 45 open ewes in experimental groups exhibited oestrus 53.2, 35.7 and 417 p. 100 respectively vs. 33.3 p. 100 in a control group with 9 control animals. Only one from 13 young open ewes dosed with D. D. E. in three similar dosification groups to adult ones exhibited heats. Experiment 3 was perfomed in january-February, 1973, in 71 adult eves of same breed groups as those in experiments 1 and 2, previously exposed to fertile rams for 43 days and dosed intramuscularly with 0.015, 0.030 and 0.060 mg/head of estradiol benzoate (E. B.) From 23 pregnant ewes in experimental group and 7 in control group only one exhibited behaviour changes that could be alike normal heat. No abortion was recorded at all, being 99 days average gestation period for ewes in the four groups injected with E. B. From 30 open ewes in experimental groups exhibited oestrus 40,0 60.0 and 40.0 p. 100 vs. 18.2 p. 100 in a control group with 11 ewes. In all three experiments lambs were normal both in weight and vita¬lity at birth for sex, breed and litter size. Evaluation of the experiments reported suggests that pregnancy de¬tection in ewes recording ethologic reaction to estrogens applied in the gestation interval from 60 to 90 days depends widely upon proportion of pregnant and open ewes in the problem flock, ranging from 45 p. 100 efficiency for a flock with 100 p. 100 open ewes to a 1C0 p. 100 efficiency for a flock with 100 p. 100 pregnant ewes (because no pregnant ewes shows oestrus if injected with estrogens as general rule). The risk of abortion seems to be low for the dosis and the estrogens tested. The method seems to be not useful whith young ewes. More research is needed concerning its aplicability in non breeding season and for finding compounds more active and less potencially dangerous. For pregnancy diagnosis is suggested intramuscular dosing with 1,0 mg of D. D, E. or 0,030 mg. of E. B. for 45-55 kg. ewes and half these doses for mature ewes weighting 30-40 kg. between 70-90 days after ram exposure. Abortion risk seems to be low if ewes are gently restricted. Some raddled or vasectomised rams are better detectors than others.
 
Arch. Zootec. 25:  3-23. 1976.    Download 1626
     
         
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